Patent Application
20210283217
Epidemiological data provide evidence of a steady rise in inflammatory and autoimmune disease throughout westernized societies over the last decades. The net % increased/year incidence and prevalence of autoimmune diseases worldwide have been reported to be 19% and 12%, respectively. Thus, there remains a need in the field for treatments of immune conditions such as autoimmune disease.
The invention relates to the discovery that modulation of neurological signaling pathways can modulate an immune response and, e.g., can be used to treat immunological disorders, inflammatory diseases, and infections. Accordingly, the present invention provides methods for treating inflammatory or autoimmune diseases or conditions or infections using neuromodulating agents. The invention also features methods of modulating an immune response or immune cell activities in a subject or in isolated immune cells.
In a first aspect, the invention provides a method of treating a subject with a disease characterized by immune dysregulation by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having a disease characterized by immune dysregulation by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject with a disease characterized by immune dysregulation by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having a disease characterized by immune dysregulation by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating an immune response in a subject by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating an immune response in a subject by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating an immune cell activity by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject with an autoimmune disease by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an autoimmune disease by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject with an autoimmune disease by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an autoimmune disease by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of the foregoing aspects, the autoimmune disease is Type 1 diabetes, and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the autoimmune disease is multiple sclerosis (MS), and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the autoimmune disease is systemic lupus erythematosus (SLE), and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the autoimmune disease is Celiac disease, and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the autoimmune disease is inflammatory bowel disease (IBD), and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the autoimmune disease is ulcerative colitis, and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In another aspect, the invention provides a method of treating inflammation in a subject by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an inflammatory condition by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating inflammation in a subject by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an inflammatory condition by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the inflammation or inflammatory condition is glomerulonephritis and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the inflammation or inflammatory condition is Hirschsprung's Disease and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject with an infection by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an infection by administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject with an infection by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of treating a subject identified as having an infection by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the infection is a tuberculosis (TB) infection and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the infection is a methicillin resistant Staphylococcus aureus infection and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the infection is a Neisseria gonorrhoeae infection and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the infection is an Aspergillus infection and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, the infection is a human immunodeficiency virus (HIV) infection and the method includes administering to the subject an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the method includes contacting an immune cell from column 2 of Table 12 with an effective amount of a neuromodulating agent that modulates a corresponding gene in column 1 of Table 12.
In some embodiments of any of the above aspects, the method includes modulating an immune cell activity.
In some embodiments of any of the above aspects, the method includes modulating lymph node innervation, modulating development of high endothelial venules (HEVs), or modulating the development of ectopic or tertiary lymphoid organs (TLOs)
In some embodiments of any of the above aspects, the immune cell activity is activation, proliferation, phagocytosis, antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cell-mediated phagocytosis (ADCP), antigen presentation, lymph node homing, lymph node egress, differentiation, degranulation, polarization, cytokine production, recruitment, or migration. In some embodiments, the activation, proliferation, phagocytosis, ADCC, ADCP, antigen presentation, lymph node homing, lymph node egress, differentiation, degranulation, polarization, cytokine production, recruitment, migration, lymph node innervation, development of HEVs, or development of TLOs is increased. In some embodiments, polarization toward an M1 phenotype is increased. In some embodiments, polarization toward an M2 phenotype is increased. In some embodiments, the activation, proliferation, phagocytosis, ADCC, ACCP, antigen presentation, lymph node homing, lymph node egress, differentiation, degranulation, polarization, cytokine production, recruitment, migration, lymph node innervation, development of HEVs, or development of TLOs is decreased. In some embodiments, polarization toward an M1 phenotype is decreased. In some embodiments, polarization toward an M2 phenotype is decreased. In some embodiments, the cytokines are pro-inflammatory cytokines, anti-inflammatory cytokines, or proliferative cytokines. In some embodiments, recruitment or migration is directed toward a site of inflammation or infection. In some embodiments, migration is directed away from a site of inflammation or infection. In some embodiments, recruitment or migration is directed toward a lymph node or secondary lymphoid organ. In some embodiments, migration is directed away from a lymph node or secondary lymphoid organ.
In some embodiments of any of the above aspects, the immune cell is selected from the group including a T cell, a cytotoxic T cell, a monocyte, a peripheral blood hematopoietic stem cell, a macrophage, an antigen presenting cell, a Natural Killer cell, a mast cell, a neutrophil, an eosinophil, a basophil, a Natural Killer T cell, a B cell, a dendritic cell, and a regulatory T cell. In some embodiments of any of the above aspects, the immune cell is a T cell. In some embodiments of any of the above aspects, the immune cell is a macrophage. In some embodiments of any of the above aspects, the immune cell is a Natural Killer (NK) cell. In some embodiments of any of the above aspects, the immune cell is a dendritic cell. In some embodiments of any of the above aspects, the immune cell is a regulatory T cell (Treg).
In another aspect, the invention provides a method of modulating innervation of a lymph node or lymphoid organ by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating innervation of a lymph node or lymphoid organ, the method comprising administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator. In some embodiments, innervation is increased. In some embodiments, innervation is decreased.
In another aspect, the invention provides a method of modulating development of high endothelial venules (HEVs) or ectopic or tertiary lymphoid organs by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating development of HEVs or ectopic or tertiary lymphoid organs by administering with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments, development of HEVs or ectopic or tertiary lymphoid organs is increased. In some embodiments, development of HEVs or ectopic or tertiary lymphoid organs is decreased.
In another aspect, the invention provides a method of modulating T cell cytokine production by contacting a T cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating T cell cytokine production by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments, T cell cytokine production of pro-inflammatory or pro-survival cytokines is increased. In some embodiments, T cell cytokine production of pro-inflammatory cytokines is decreased. In some embodiments, T cell cytokine production of anti-inflammatory cytokines is increased.
In another aspect, the invention provides a method of modulating macrophage polarization by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of modulating macrophage polarization by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments, macrophages are polarized toward an M2 phenotype. In some embodiments, macrophages are polarized toward an M1 phenotype.
In another aspect, the invention provides a method of decreasing T cell pro-inflammatory cytokine production by contacting a T cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing T cell pro-inflammatory cytokine production by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing pro-inflammatory cytokine levels by contacting a T cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing pro-inflammatory cytokine levels by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the pro-inflammatory cytokine is interferon gamma (IFNγ), interleukin-5 (IL-5), IL-6, IL-4, IL-1β, IL-13, or tumor necrosis factor alpha (TNFα).
In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IFNγ. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is TNFα. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-13. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-4. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-1β.
In some embodiments of any of the above aspects, the pro-inflammatory cytokine is an activator of allergic response selected from the group including IL-4 and IL-13. In some embodiments, the pro-inflammatory cytokine is IL-4.
In another aspect, the invention provides a method of increasing T cell pro-inflammatory cytokine production by contacting a T cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of increasing T cell pro-inflammatory cytokine production by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of increasing pro-inflammatory cytokine levels by contacting a T cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of increasing pro-inflammatory cytokine levels by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IFNγ, IL-5, IL-6, IL-4, IL-1β, IL-13, or TNFα. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IFNγ. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is TNFα. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-13. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-4. In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-1β.
In some embodiments of any of the above aspects, the pro-inflammatory is a cytokine that activates the anti-parasitic immune response selected from the group including IL-4 and IL-13. In some embodiments, the pro-inflammatory cytokine is IL-4.
In another aspect, the invention provides a method of decreasing macrophage polarization toward an M1 phenotype by contacting a macrophage with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing macrophage polarization toward an M1 phenotype by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of increasing macrophage polarization toward an M1 phenotype by contacting a macrophage with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of increasing macrophage polarization toward an M1 phenotype by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing CCR7+ T cell numbers in secondary lymphoid organs by contacting CCR7+ T cells with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing CCR7+ T cell numbers in secondary lymphoid organs by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing CCR7+ T cell numbers in sites of inflammation by contacting CCR7+ T cells with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing CCR7+ T cell numbers in sites of inflammation by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the method includes decreasing CCR7+ T cell proliferation. In some embodiments of any of the above aspects, the method includes decreasing CCR7+ T cell migration to secondary lymphoid organs. In some embodiments of any of the above aspects, the method includes decreasing CCR7+ T cell migration to sites of inflammation.
In another aspect, the invention provides a method of increasing the number of CCR7+ T cells in a lymph node by contacting a CCR7+ T cell with an effective amount of a dopamine agonist.
In another aspect, the invention provides a method of increasing the number of CCR7+ T cells in a lymph node by administering an effective amount of a dopamine agonist.
In some embodiments of any of the above aspects, the method includes increasing CCR7+ T cell proliferation. In some embodiments of any of the above aspects, the method includes increasing CCR7+ T cell lymph node homing.
In another aspect, the invention provides a method of decreasing immune cell cytotoxicity by contacting an immune cell with an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing immune cell cytotoxicity by administering an effective amount of a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the cytotoxicity is antibody-dependent cell-mediated cytotoxicity. In some embodiments of any of the above aspects, the immune cell is an NK cell.
In another aspect, the invention provides a method of decreasing NK cell activity or NK cell lytic function by contacting an NK cell with an effective amount a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In another aspect, the invention provides a method of decreasing NK cell activity or NK cell lytic function by administering an effective amount a neuromodulating agent selected from the group including a neurotransmission modulator, a neuropeptide signaling modulator, a neuronal growth factor modulator, and a neurome gene expression modulator.
In some embodiments of any of the above aspects, the pro-inflammatory cytokine is IL-1β, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-18, TNFα, IFNγ, MCP-1, CCL2, or GMCSF. In some embodiments of any of the above aspects, the pro-survival cytokine is IL-2, IL-4, IL-6, IL-7, or IL-15. In some embodiments of any of the above aspects, the anti-inflammatory cytokine is IL-4, IL-10, IL-11, IL-13, IFNα, or TGFβ.
In some embodiments of any of the above aspects, the inflammatory or autoimmune disease or condition is Graves' disease, SLE, type 1 diabetes, MS, plaque psoriasis, rheumatoid arthritis (RA), asthma, myasthenia gravis, IBD, ulcerative colitis (UC), Hirschsprung's disease-associated enterocolitis (HAEC), burn, fibrosis, allergy, allergic dermatitis, pancreatitis, NASH, fatty liver disease, atherosclerosis, hemophagocytic lymphohistiocytosis, hemophagocytic syndrome, glomerulonephritis, ischemia-reperfusion injury, allograft rejection, Crohn's disease, Celiac disease, food allergy, or atopic dermatitis.
In some embodiments of any of the above aspects, the infection is a persistent viral infection, bacterial infection, fungal infection, mycoplasma infection or parasitic infection.
In some embodiments of any of the above aspects, the neuromodulating agent is a dopamine agonist, adrenergic agonist, nicotinic agonist, muscarinic agonist, serotonin agonist, glutamate receptor agonist, histamine agonist, cannabinoid receptor agonist, purinergic receptor agonist, GABA agonist, neuropeptide Y receptor agonist, somatostatin receptor agonist, CGRP receptor agonist, tachykinin receptor agonist, VIP receptor agonist, opioid agonist, oxytocin receptor agonist, or vasopressin receptor agonist. In some embodiments, the agonist is selected from an agonist listed in Tables 2A-2L. In some embodiments, the agonist is a dopamine agonist listed in Table 2A or 2C. In some embodiments, the dopamine agonist is dopamine, quinpirole dopexamine, bromocriptine, lisuride, pergolide, cabergoline, quinagolide, apomorphine, ropinirole, pramipexole, or piribedil. In some embodiments, the agonist is an adrenergic agonist listed in Table 2A or 2B. In some embodiments, the adrenergic agonist is isoproterenol or metaproterenol.
In some embodiments of any of the above aspects, the neuromodulating agent is a dopamine antagonist, adrenergic antagonist, nicotinic antagonist, muscarinic antagonist, serotonin antagonist, glutamate receptor antagonist, histamine antagonist, cannabinoid receptor antagonist, purinergic receptor antagonist, GABA antagonist, neuropeptide Y receptor antagonist, somatostatin receptor antagonist, CGRP receptor antagonist, tachykinin receptor antagonist, VIP receptor antagonist, opioid antagonist, oxytocin receptor antagonist, or vasopressin receptor antagonist. In some embodiments, the antagonist is selected from an antagonist listed in Tables 2A-2L. In some embodiments, the antagonist is a dopamine antagonist listed in Table 2A or 2C. In some embodiments, the dopamine antagonist is haloperidol or L-741,626. In some embodiments, the antagonist is a beta adrenergic antagonist listed in Table 2A or 2B. In some embodiments, the beta adrenergic antagonist is propranolol or nadolol.
In some embodiments of any of the above aspects, the neuromodulating agent is neuropeptide Y, CGRP, somatostatin, bombesin, cholecystokinin, dynorphin, enkephalin, endorphin, gastrin glucagon, melatonin, motilin, neurokinin A, neurokinin B, orexin, oxytocin, pancreatic peptide, peptide YY, substance P, or vasoactive intestinal peptide. In some embodiments, the neuromodulating agent is neuropeptide Y. In some embodiments, the neuromodulating agent is CGRP.
In some embodiments of any of the above aspects, the neuromodulating agent is a neuropeptide Y, CGRP, somatostatin, bombesin, cholecystokinin, dynorphin, enkephalin, endorphin, gastrin glucagon, melatonin, motilin, neurokinin A, neurokinin B, orexin, oxytocin, pancreatic peptide, peptide YY, substance P, or vasoactive intestinal peptide blocking antibody. In some embodiments, the neuromodulating agent is a neuropeptide Y blocking antibody. In some embodiments, the neuromodulating agent is a CGRP blocking antibody. In some embodiments, the CGRP blocking antibody is an antibody listed in Table 4.
In some embodiments of any of the above aspects, the neuromodulating agent is a neurotransmission modulator. In some embodiments, the neurotransmission modulator is a neurotransmitter listed in Tables 1A-1B a neurotransmitter encoded by a gene in Table 7, an agonist or an antagonist of a neurotransmitter of neurotransmitter receptor listed in Tables 1A-1B or encoded by a gene in Table 7, a neurotransmission modulator listed in Table 2M, a modulator of a biosynthesis, channel, ligand receptor, signaling, structural, synaptic, vesicular, or transporter protein encoded by a gene in Table 7, a channel or transporter protein encoded by a gene in Table 8, or a neurotoxin listed in Table 3. In some embodiments, the agonist or antagonist is an agonist or antagonist listed in Tables 2A-2K.
In some embodiments of any of the above aspects, the neuromodulating agent is a neuropeptide signaling modulator. In some embodiments, the neuropeptide signaling modulator is a neuropeptide listed in Tables 1A-1B or encoded by a gene in Table 7 or analog thereof, an agonist or antagonist of a neuropeptide or neuropeptide receptor listed in in Tables 1A-1B or encoded by a gene in Table 7, or a modulator of a biosynthesis, ligand, receptor, or signaling protein encoded by a gene in Table 7. In some embodiments, the neuropeptide has at least 70%, 75%, 80%, 85%, 90%, 95%, 98%, or 99% identity to the neuropeptide sequence referenced by accession number or Entrez Gene ID in Tables 1A-1B or Table 7. In some embodiments, the agonist or antagonist is an agonist or antagonist listed in Table 2A or 2L.
In some embodiments of any of the above aspects, the neuromodulating agent is a neuronal growth factor modulator. In some embodiments, the neuronal growth factor modulator is a neuronal growth factor listed in Table 1C or encoded by a gene in Table 7 or an analog thereof, or a modulator of a ligand, receptor, structural, synaptic, or signaling protein encoded by a gene in Table 7. In some embodiments, the neuronal growth factor has at least 70%, 75%, 80%, 85%, 90%, 90%, 98%, or 99% identity to the neuronal growth factor sequence referenced by accession number or Entrez Gene ID in Table 1C or Table 7. In some embodiments, the neuronal growth factor modulator is an antibody listed in Table 5. In some embodiments, the neuronal growth factor modulator is an agonist or antagonist listed in Table 6. In some embodiments, the neuronal growth factor modulator is etanercept, thalidomide, lenalidomide, pomalidomide, pentoxifylline, bupropion, DOI, disitertide, or trabedersen.
In some embodiments of any of the above aspects, the neuromodulating agent is a neurome gene expression modulator. In some embodiments, the neurome gene expression modulator increases or decreases the expression of a neurome gene in Table 7.
In some embodiments of any of the above aspects, the neuromodulating agent modulates the expression of a neurome gene in Table 7 or the activity of a protein encoded by a neurome gene in Table 7.
In some embodiments of any of the above aspects, the neuromodulating agent modulates the expression or activity of a chemokine, chemokine receptor, or immune cell trafficking molecule in Tables 10 or 11.
In some embodiments of any of the above aspects, the neuromodulating agent is selected from the group including a neurotransmitter, a neuropeptide, an antibody, a small molecule, a DNA molecule, a RNA molecule, a gRNA, and a viral vector. In some embodiments, the antibody is a blocking or neutralizing antibody. In some embodiments, the RNA molecule is an mRNA or an inhibitory RNA. In some embodiments, the viral vector is selected from the group including an adeno-associated virus (AAV), an adenovirus, a parvovirus, a coronavirus, a rhabdovirus, a paramyxovirus, a picornavirus, an alphavirus, a herpes virus, a poxvirus, and a lentivirus. In some embodiments, the herpes virus is a replication deficient herpes virus.
In some embodiments of any of the above aspects, the neuromodulating agent does not cross the blood brain barrier. In some embodiments, the neuromodulating agent has been modified to prevent blood brain barrier crossing by conjugation to a targeting moiety, formulation in a particulate delivery system, addition of a molecular adduct, or through modulation of its size, polarity, flexibility, or lipophilicity.
In some embodiments of any of the above aspects, the neuromodulating agent does not have a direct effect on the central nervous system or gut.
In some embodiments of any of the above aspects, wherein the neuromodulating agent is administered locally. In some embodiments, the neuromodulating agent is administered to or near a lymph node.
In some embodiments of any of the above aspects, the method further includes administering a second therapeutic agent. In some embodiments, the second therapeutic agent is a disease-modifying anti-rheumatic drug (DMARD), a biologic response modifier (a type of DMARD), a corticosteroid, a nonsteroidal anti-inflammatory medication (NSAID), prednisone, prednisolone, methylprednisolone, methotrexate, hydroxycholorquine, sulfasalazine, leflunomide, cyclophosphamide, azathioprine, tofacitinib, adalimumab, abatacept, anakinra, kineret, certolizumab, etanercept, golimumab, infliximab, rituximab tocilizumab, an antiviral compound, a nucleoside-analog reverse transcriptase inhibitor (NRTI), a non-nucleoside reverse transcriptase inhibitor (NNRTI), an antibacterial compound, an antifungal compound, or an antiparasitic compound.
In some embodiments of any of the above aspects, the method further includes measuring cytokine levels after administration of the neuromodulating agent.
In some embodiments of any of the above aspects, the method further includes measuring one or more immune cell markers after administration of the neuromodulating agent.
In some embodiments of any of the above aspects, wherein the method further includes measuring the expression of one or more neurome genes in Table 7 after administration of the neuromodulating agent.
In some embodiments of any of the above aspects, wherein the method further includes measuring cytokine levels before administration of the neuromodulating agent.
In some embodiments of any of the above aspects, wherein the method further includes measuring one or more immune cell markers before administration of the neuromodulating agent.
In some embodiments of any of the above aspects, the one or more immune cell markers is a marker listed in Table 9.
In some embodiments of any of the above aspects, the method further includes profiling an immune cell for expression of one or more neurome genes in Table 7 before administration of the neuromodulating agent. In some embodiments, the method further includes selecting a neuromodulating agent based on the profiling results.
In some embodiments of any of the above aspects, the one or more neurome genes in Table 7 is a channel, transporter, neurotransmitter, neuropeptide, neurotrophic, signaling, synaptic, structural, ligand, receptor, biosynthesis, other, or vesicular gene.
In some embodiments of any of the above aspects, the subject is not diagnosed as having a neuropsychiatric disorder.
In some embodiments of any of the above aspects, the subject is not diagnosed as having high blood pressure or a cardiac condition.
In some embodiments of any of the above aspects, wherein neuromodulating agent is administered in an amount sufficient to increase lymph node innervation, increase nerve firing in a lymph node, increase the development of HEVs or TLOs, increase immune cell migration, increase immune cell proliferation, increase immune cell recruitment, increase immune cell lymph node homing, increase immune cell lymph node egress, increase immune cell differentiation, increase immune cell activation, increase immune cell polarization, increase immune cell cytokine production, increase immune cell degranulation, increase immune cell maturation, increase immune cell ADCC, increase immune cell ADCP, or increase immune cell antigen presentation.
In some embodiments of any of the above aspects, the neuromodulating agent is administered in an amount sufficient to decrease lymph node innervation, decrease nerve firing in a lymph node, decrease the development of HEVs or TLOs, decrease immune cell migration, decrease immune cell proliferation, decrease immune cell recruitment, decrease immune cell lymph node homing, decrease immune cell lymph node egress, decrease immune cell differentiation, decrease immune cell activation, decrease immune cell polarization, decrease immune cell cytokine production, decrease immune cell degranulation, decrease immune cell maturation, decrease immune cell ADCC, decrease immune cell ADCP, or decrease immune cell antigen presentation.
In some embodiments of any of the above aspects, the neuromodulating agent is administered in an amount sufficient to treat the autoimmune or inflammatory condition or infection, reduce symptoms of an autoimmune or inflammatory condition, reduce inflammation, reduce auto-antibody levels, increase organ function, decrease rate or number of relapses or flare-ups, reduce viral load, or control infection.
As used herein, “administration” refers to providing or giving a subject a therapeutic agent (e.g., a neuromodulating agent), by any effective route. Exemplary routes of administration are described herein below.
As used herein, the term “agonist” refers to an agent (e.g., a neurotransmitter, neuropeptide, small molecule, or antibody) that increases receptor activity. An agonist may activate a receptor by directly binding to the receptor, by acting as a cofactor, by modulating receptor conformation (e.g., maintaining a receptor in an open or active state). An agonist may increase receptor activity by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more. An agonist may induce maximal receptor activation or partial activation depending on the concentration of the agonist and its mechanism of action.
As used herein, the term “analog” refers to a protein of similar nucleotide or amino acid composition or sequence to any of the proteins or peptides of the invention, allowing for variations that do not have an adverse effect on the ability of the protein or peptide to carry out its normal function (e.g., bind to a receptor or initiate neurotransmitter or neuropeptide signaling). Analogs may be the same length, shorter, or longer than their corresponding protein or polypeptide. Analogs may have about 60% (e.g., about 60%, about 62%, about 64%, about 66%, about 68%, about 70%, about 72%, about 74%, about 76%, about 78%, about 80%, about 82%, about 84%, about 86%, about 88%, about 90%, about 92%, about 94%, about 96%, about 98%, or about 99%) identity to the amino acid sequence of the naturally occurring protein or peptide. An analog can be a naturally occurring protein or polypeptide sequence that is modified by deletion, addition, mutation, or substitution of one or more amino acid residues.
As used herein, the term “antagonist” refers to an agent (e.g., a neurotransmitter, neuropeptide, small molecule, or antibody) that reduces or inhibits receptor activity. An antagonist may reduce receptor activity by directly binding to the receptor, by blocking the receptor binding site, by modulating receptor conformation (e.g., maintaining a receptor in a closed or inactive state). An antagonist may reduce receptor activity by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more. An antagonist may also completely block or inhibit receptor activity. Antagonist activity may be concentration-dependent or -independent.
As used herein, the term “antibody” comprises at least the variable domain of a heavy chain, and normally comprises at least the variable domains of a heavy chain and of a light chain of an immunoglobulin, which bind to an antigen of interest. Antibodies and antigen-binding fragments, variants, or derivatives thereof include, but are not limited to, polyclonal, monoclonal, multispecific, human, humanized, primatized, or chimeric antibodies, single chain antibodies, epitope-binding fragments, e.g., Fab, Fab′ and F(ab′)2, Fd, Fvs, single-chain Fvs (scFv), single-chain antibodies, disulfide-linked Fvs (sdFv), fragments comprising either a VL or VH domain, fragments produced by a Fab expression library, and anti-idiotypic (anti-Id) antibodies. Antibody molecules of the invention can be of any type (e.g., IgG, IgE, IgM, IgD, IgA, and IgY), class (e.g., IgG1, IgG2, IgG3, IgG4, IgA1 and IgA2) or subclass of immunoglobulin molecule.
As used herein, the term “cardiac condition” refers to a medical condition directly affecting the heart or circulatory system. Cardiac conditions include abdominal aortic aneurysm, arrhythmia (e.g., supraventricular tachycardia, inappropriate sinus tachycardia, atrial flutter, atrial fibrillation, ventricular tachycardia, and ventricular fibrillation), angina, atherosclerosis, brugada syndrome, cardiac arrest, cardiomyopathy, cardiovascular disease, congenital heart disease, coronary heart disease, catecholaminergic polymorphic ventricular tachycardia (CVPT), familial hypercholesterolaemia, heart attack, heart failure, heart block, heart valve disease (e.g., heart murmur, valve stenosis, mitral valve prolapse, and heart valve regurgitation), inherited heart conditions, long QT syndrome, progressive cardiac conduction deficit (PCCD), pericarditis, venous thromboembolism, peripheral artery disease, and stroke.
As used herein, the term “cell type” refers to a group of cells sharing a phenotype that is statistically separable based on gene expression data. For instance, cells of a common cell type may share similar structural and/or functional characteristics, such as similar gene activation patterns and antigen presentation profiles. Cells of a common cell type may include those that are isolated from a common tissue (e.g., epithelial tissue, neural tissue, connective tissue, or muscle tissue) and/or those that are isolated from a common organ, tissue system, blood vessel, or other structure and/or region in an organism.
As used herein, a “combination therapy” or “administered in combination” means that two (or more) different agents or treatments are administered to a subject as part of a defined treatment regimen for a particular disease or condition. The treatment regimen defines the doses and periodicity of administration of each agent such that the effects of the separate agents on the subject overlap. In some embodiments, the delivery of the two or more agents is simultaneous or concurrent and the agents may be co-formulated. In other embodiments, the two or more agents are not co-formulated and are administered in a sequential manner as part of a prescribed regimen. In some embodiments, administration of two or more agents or treatments in combination is such that the reduction in a symptom, or other parameter related to the disorder is greater than what would be observed with one agent or treatment delivered alone or in the absence of the other. The effect of the two treatments can be partially additive, wholly additive, or greater than additive (e.g., synergistic). Sequential or substantially simultaneous administration of each therapeutic agent can be effected by any appropriate route including, but not limited to, oral routes, intravenous routes, intramuscular routes, and direct absorption through mucous membrane tissues. The therapeutic agents can be administered by the same route or by different routes. For example, a first therapeutic agent of the combination may be administered by intravenous injection while a second therapeutic agent of the combination may be administered orally.
As used herein, an agent that “does not cross the blood brain barrier” is an agent that does not significantly cross the barrier between the peripheral circulation and the brain and spinal cord. This can also be referred to as “blood brain barrier impermeable” agent. Agents will have a limited ability to cross the blood brain barrier if they are not lipid soluble or have a molecular weight of over 600 Daltons. Agents that typically cross the blood brain barrier can be modified to become blood brain barrier impermeable based on chemical modifications that increase the size or alter the hydrophobicity of the agent, packaging modifications that reduce diffusion (e.g., packaging an agent within a microparticle or nanoparticle), and conjugation to biologics that direct the agent away from the blood brain barrier (e.g., conjugation to a pancreas-specific antibody). An agent that does not cross the blood brain barrier is an agent for which 30% or less (e.g., 30%, 25%, 20%, 15%, 10%, 5%, 2% or less) of the administered agent crosses the blood brain barrier.
As used herein, an agent that “does not have a direct effect on the central nervous system (CNS) or gut” is an agent that does not directly alter neurotransmission, neuronal numbers, or neuronal morphology in the CNS or gut when administered according to the methods described herein. This may be assessed by administering the agents to animal models and performing electrophysiological recordings or immunohistochemical analysis. An agent will be considered not to have a direct effect on the CNS or gut if administration according to the methods described herein has an effect on neurotransmission, neuronal numbers, or neuronal morphology in the CNS or gut that is 50% or less (e.g., 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, 5%, or less) of the effect observed if the same agent is administered directly to the CNS or gut.
As used herein, the terms “effective amount,” “therapeutically effective amount,” and a “sufficient amount” of composition, vector construct, viral vector or cell described herein refer to a quantity sufficient to, when administered to the subject, including a mammal, for example a human, effect beneficial or desired results, including clinical results, and, as such, an “effective amount” or synonym thereto depends upon the context in which it is being applied. For example, in the context of treating an autoimmune disorder, inflammation, or infection, it is an amount of the composition, vector construct, viral vector or cell sufficient to achieve a treatment response as compared to the response obtained without administration of the composition, vector construct, viral vector or cell. The amount of a given composition described herein that will correspond to such an amount will vary depending upon various factors, such as the given agent, the pharmaceutical formulation, the route of administration, the type of disease or disorder, the identity of the subject (e.g., age, sex, weight) or host being treated, and the like, but can nevertheless be routinely determined by one skilled in the art. Also, as used herein, a “therapeutically effective amount” of a composition, vector construct, viral vector or cell of the present disclosure is an amount which results in a beneficial or desired result in a subject as compared to a control. As defined herein, a therapeutically effective amount of a composition, vector construct, viral vector or cell of the present disclosure may be readily determined by one of ordinary skill by routine methods known in the art. Dosage regime may be adjusted to provide the optimum therapeutic response.
As used herein, the term “high blood pressure” refers to a chronic medical condition in which the systemic arterial blood pressure is elevated. It is classified as blood pressure above 140/90 mmHg.
As used herein, the terms “increasing” and “decreasing” refer to modulating resulting in, respectively, greater or lesser amounts, of function, expression, or activity of a metric relative to a reference. For example, subsequent to administration of an neuromodulating agent in a method described herein, the amount of a marker of a metric (e.g., T cell polarization) as described herein may be increased or decreased in a subject by at least 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 98% or more relative to the amount of the marker prior to administration. Generally, the metric is measured subsequent to administration at a time that the administration has had the recited effect, e.g., at least one week, one month, 3 months, or 6 months, after a treatment regimen has begun.
As used herein, the term “innervated” refers to a tissue (e.g., a lymph node) that contains nerves. “Innervation” refers to the process of nerves entering a tissue.
As used herein, “locally” or “local administration” means administration at a particular site of the body intended for a local effect and not a systemic effect. Examples of local administration are epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional administration, lymph node administration, intratumoral administration and administration to a mucous membrane of the subject, wherein the administration is intended to have a local and not a systemic effect.
As used herein, a “neuromodulating agent” is an agent that affects a nerve impulse, a nerve function, one or more components of a neural pathway, neural structure, function, or activity in a neuron or a cell of an innervated tissue, e.g., in the peripheral nervous system. A neuromodulating agent may, e.g., increase or decrease neurogenesis; potentiate or inhibit the transmission of a nerve impulse; increase or decrease innervation of a tissue; or increase or decrease adrenergic, dopaminergic, cholinergic, serotonergic, glutamatergic, purinergic, GABAergic, or neuropetidergic signaling in a nerve or cell of an innervated tissue. A neuromodulating agent may be a neuropeptide, a neurotoxin, or a neurotransmitter, and may be any type of agent such as a small molecule (e.g. a neuropeptide or neurotransmitter agonist or antagonist), a peptide, a protein (e.g., an antibody or receptor fusion protein) or a nucleic acid (e.g., a therapeutic mRNA). Neuromodulating agents include neurotransmission modulators, neuropeptide signaling modulators, neuronal growth factor modulators, and neurome gene expression modulators.
As used herein, the term “neurome gene” refers to a gene expressed by a cell or tissue of the nervous system. A list of exemplary neurome genes is provided in Tables 1A-1C, Table 7, and Table 8. Non-nervous system cells and tissues (e.g., immune cells) can also express neurome genes, and the invention includes methods of profiling non-nervous system cells and tissues for neurome gene expression, modulating neurome gene expression in in non-nervous system cells and tissues, and treating autoimmune or inflammatory disorders or infection based on neurome gene expression in in non-nervous system cells and tissues.
As used herein, the term “neurome gene expression modulator” refers to a neuromodulating agent that affects gene expression (e.g., gene transcription, gene translation, or protein levels) of one or more neurome genes. A neurome gene expression modulator may increase or decrease gene expression by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98%, or more. Neurome gene expression modulators may increase gene expression through epigenetic modifications (e.g., demethylation or acetylation), post-translational modifications (e.g., reducing ubiquitination, or altering sumoylation or phosphorylation), by increasing mRNA translation and stability, or through delivery of exogenous genetic material (e.g., a viral vector expressing a gene of interest). Neurome gene expression modulators may decrease gene expression through epigenetic modifications (e.g., methylation or deacetylation), post-translational modifications (e.g., increasing ubiquitination, or altering sumoylation or phosphorylation), or by decreasing mRNA translation and stability (e.g., using miRNA, siRNA, shRNA, or other therapeutic RNAs).
As used herein, the term “neuronal growth factor modulator” refers to a neuromodulating agent that regulates neuronal growth, development, or survival. Neuronal growth factors include proteins that promote neurogenesis, neuronal growth, and neuronal differentiation (e.g., neurotrophic factors NGF, NT3, BDNF, CNTF, and GDNF), proteins that promote neurite outgrowth (e.g., axon or dendrite outgrowth or stabilization), or proteins that promote synapse formation (e.g., synaptogenesis, synapse assembly, synaptic adhesion, synaptic maturation, synaptic refinement, or synaptic stabilization). These processes lead to innervation of tissue, including neural tissue, muscle, and lymph nodes, and the formation of synaptic connections between two or more neurons and between neurons and non-neural cells. A neuronal growth factor modulator may block one or more of these processes (e.g., through the use of antibodies that block neuronal growth factors or their receptors) or promote one or more of these processes (e.g., through the use of these proteins or analogs or peptide fragments thereof). Exemplary neuronal growth factors are listed in Table 1C.
As used herein, the term “neuropeptide signaling modulator” refers to a neuromodulating agent that either induces or increases neuropeptide signaling, or decreases or blocks neuropeptide signaling. Neuropeptide signaling modulators can increase or decrease neuropeptide signaling by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more. Exemplary neuropeptides and neuropeptide receptors are listed in Tables 1A-1B. Neuropeptide signaling modulators that induce or increase neuropeptide signaling include neuropeptides and analogs and fragments thereof, agents that increase neuropeptide receptor activity (e.g., neuropeptide agonists), and agents that reduce neuropeptide degradation or reuptake. Neuropeptide signaling modulators that decrease or block neuropeptide signaling include agents that reduce or inhibit neuropeptide receptor activity (e.g., neuropeptide antagonists), agents that bind to neuropeptides or block their interaction with receptors (e.g., neuropeptide blocking antibodies), or agents that increase neuropeptide degradation or clearance. Exemplary neuropeptide agonists and antagonists are listed in Tables 2A and 2L.
As used herein, the term “neuropsychiatric disorder” refers to a psychiatric or mental disorder that may cause suffering or an impaired ability to function. A neuropsychiatric disorder is a syndrome characterized by clinically significant disturbance in an individual's cognition, emotion regulation, or behavior that reflects a dysfunction in the psychological, biological, or developmental processes underlying mental functioning. Neuropsychiatric disorders may be diagnosed by psychiatrists, psychologists, neurologists, or physicians. Neuropsychiatric disorders include mood disorders (e.g., depression, bipolar depression, major depressive disorder), psychotic disorders (e.g., schizophrenia, schizoaffective disorder), personality disorders (e.g., borderline personality disorder, obsessive compulsive personality disorder, narcissistic personality disorder), eating disorders, sleep disorders, sexual disorders, anxiety disorders (e.g., generalized anxiety disorder, social anxiety disorder, post-traumatic stress disorder), developmental disorders (e.g., autism, attention deficit disorder, attention deficit hyperactivity disorder), benign forgetfulness, childhood learning disorders, Alzheimer's disease, addiction, and others listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM).
As used herein, the term “neurotransmission modulator” refers to a neuromodulating agent that either induces or increases neurotransmission or decreases or blocks neurotransmission. Neurotransmission modulators can increase or decrease neurotransmission by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more. Exemplary neurotransmitters and neurotransmitter receptors are listed in Tables 1A-1B. Neurotransmission modulators may increase neurotransmission by increasing neurotransmitter synthesis or release, preventing neurotransmitter reuptake or degradation, increasing neurotransmitter receptor activity, increasing neurotransmitter receptor synthesis or membrane insertion, decreasing neurotransmitter degradation, and regulating neurotransmitter receptor conformation. Neurotransmission modulators that increase neurotransmission include neurotransmitters and analogs thereof and neurotransmitter receptor agonists. Neurotransmission modulators may decrease neurotransmission by decreasing neurotransmitter synthesis or release, increasing neurotransmitter reuptake or degradation, decreasing neurotransmitter receptor activity, decreasing neurotransmitter receptor synthesis or membrane insertion, increasing neurotransmitter degradation, regulating neurotransmitter receptor conformation, and disrupting the pre- or postsynaptic machinery. Neurotransmission modulators that decrease or block neurotransmission include antibodies that bind to or block the function of neurotransmitters, neurotransmitter receptor antagonists, and toxins that disrupt synaptic release.
As used herein, the term “percent (%) sequence identity” refers to the percentage of amino acid (or nucleic acid) residues of a candidate sequence that are identical to the amino acid (or nucleic acid) residues of a reference sequence after aligning the sequences and introducing gaps, if necessary, to achieve the maximum percent sequence identity (e.g., gaps can be introduced in one or both of the candidate and reference sequences for optimal alignment and non-homologous sequences can be disregarded for comparison purposes). Alignment for purposes of determining percent sequence identity can be achieved in various ways that are within the skill in the art, for instance, using publicly available computer software, such as BLAST, ALIGN, or Megalign (DNASTAR) software. Those skilled in the art can determine appropriate parameters for measuring alignment, including any algorithms needed to achieve maximal alignment over the full length of the sequences being compared. For example, a reference sequence aligned for comparison with a candidate sequence may show that the candidate sequence exhibits from 50% to 100% sequence identity across the full length of the candidate sequence or a selected portion of contiguous amino acid (or nucleic acid) residues of the candidate sequence. The length of the candidate sequence aligned for comparison purposes may be, for example, at least 30%, (e.g., 30%, 40, 50%, 60%, 70%, 80%, 90%, or 100%) of the length of the reference sequence. When a position in the candidate sequence is occupied by the same amino acid residue as the corresponding position in the reference sequence, then the molecules are identical at that position.
As used herein, a “pharmaceutical composition” or “pharmaceutical preparation” is a composition or preparation, having pharmacological activity or other direct effect in the mitigation, treatment, or prevention of disease, and/or a finished dosage form or formulation thereof and which is indicated for human use.
As used herein, the term “pharmaceutically acceptable” refers to those compounds, materials, compositions and/or dosage forms, which are suitable for contact with the tissues of a subject, such as a mammal (e.g., a human) without excessive toxicity, irritation, allergic response and other problem complications commensurate with a reasonable benefit/risk ratio.
As used herein, the term “proliferation” refers to an increase in cell numbers through growth and division of cells.
As used herein, the term “sample” refers to a specimen (e.g., blood, blood component (e.g., serum or plasma), urine, saliva, amniotic fluid, cerebrospinal fluid, tissue (e.g., placental or dermal), pancreatic fluid, chorionic villus sample, and cells) isolated from a subject.
As used herein, the terms “subject” and “patient” refer to an animal (e.g., a mammal, such as a human). A subject to be treated according to the methods described herein may be one who has been diagnosed with a particular condition, or one at risk of developing such conditions. Diagnosis may be performed by any method or technique known in the art. One skilled in the art will understand that a subject to be treated according to the present disclosure may have been subjected to standard tests or may have been identified, without examination, as one at risk due to the presence of one or more risk factors associated with the disease or condition.
“Treatment” and “treating,” as used herein, refer to the medical management of a subject with the intent to improve, ameliorate, stabilize (i.e., not worsen), prevent or cure a disease, pathological condition, or disorder. This term includes active treatment (treatment directed to improve the disease, pathological condition, or disorder), causal treatment (treatment directed to the cause of the associated disease, pathological condition, or disorder), palliative treatment (treatment designed for the relief of symptoms), preventative treatment (treatment directed to minimizing or partially or completely inhibiting the development of the associated disease, pathological condition, or disorder); and supportive treatment (treatment employed to supplement another therapy). Treatment also includes diminishment of the extent of the disease or condition; preventing spread of the disease or condition; delay or slowing the progress of the disease or condition; amelioration or palliation of the disease or condition; and remission (whether partial or total), whether detectable or undetectable. “Ameliorating” or “palliating” a disease or condition means that the extent and/or undesirable clinical manifestations of the disease, disorder, or condition are lessened and/or time course of the progression is slowed or lengthened, as compared to the extent or time course in the absence of treatment. “Treatment” can also mean prolonging survival as compared to expected survival if not receiving treatment. Those in need of treatment include those already with the condition or disorder, as well as those prone to have the condition or disorder or those in which the condition or disorder is to be prevented.
As used herein, the term “activation” refers to the response of an immune cell to a perceived insult. When immune cells become activated, they proliferate, secrete pro-inflammatory cytokines, differentiate, present antigens, become more polarized, and become more phagocytic and cytotoxic. Factors that stimulate immune cell activation include pro-inflammatory cytokines, pathogens, and non-self antigen presentation (e.g., antigens from pathogens presented by dendritic cells, macrophages, or B cells).
As used herein, the terms “antibody-dependent cell mediated cytotoxicity” and “antibody-dependent cellular toxicity” (ADCC) refer to the killing of an antibody-coated target cell by a cytotoxic effector cell through a non-phagocytic process, characterized by the release of the content of cytotoxic granules or by the expression of cell death-inducing molecules. ADCC is triggered through interaction of target-bound antibodies (belonging to IgG or IgA or IgE classes) with certain Fc receptors (FcRs), glycoproteins present on the effector cell surface that bind the Fc region of immunoglobulins (Ig). Effector cells that mediate ADCC include natural killer (NK) cells, monocytes, macrophages, neutrophils, eosinophils and dendritic cells.
As used herein, the terms “antibody-dependent cell mediated phagocytosis” and “antibody-dependent cellular phagocytosis” (ADCP) refer to the phagocytosis (e.g., engulfment) of an antibody-coated target cell by immune cells (e.g., phagocytes). ADCP is triggered through interaction of target-bound antibodies (belonging to IgG or IgA or IgE classes) with certain Fc receptors (FcRs, e.g., FcγRIIa, FcγRIIIa, and FcγRI), glycoproteins present on the effector cell surface that bind the Fc region of immunoglobulins (Ig). Effector cells that mediate ADCP include monocytes, macrophages, neutrophils, and dendritic cells.
As used herein, the term “antigen presentation” refers to a process in which fragments of antigens are displayed on the cell surface of immune cells. Antigens are presented to T cells and B cells to stimulate an immune response. Antigen presenting cells include dendritic cells, B cells, and macrophages. Mast cells and neutrophils can also be induced to present antigens.
As used herein, the term “anti-inflammatory cytokine” refers to a cytokine produced or secreted by an immune cell that reduces inflammation. Immune cells that produce and secrete anti-inflammatory cytokines include T cells (e.g., Th cells) macrophages, B cells, and mast cells. Anti-inflammatory cytokines include IL4, IL-10, IL-11, IL-13, interferon alpha (IFNα) and transforming growth factor-beta (TGFβ).
As used herein, the term “chemokine” refers to a type of small cytokine that can induce directed chemotaxis in nearby cells. Classes of chemokines include CC chemokines, CXC chemokines, C chemokines, and CX3C chemokines. Chemokines can regulate immune cell migration and homing, including the migration and homing of monocytes, macrophages, T cells, mast cells, eosinophils, and neutrophils. Chemokines responsible for immune cell migration include CCL19, CCL21, CCL14, CCL20, CCL25, CCL27, CXCL12, CXCL13, CCR9, CCR10, and CXCR5. Chemokines that can direct the migration of inflammatory leukocytes to sites of inflammation or injury include CCL2, CCL3, CCL5, CXCL1, CXCL2, and CXCL8.
As used herein, the term “cytokine” refers to a small protein involved in cell signaling. Cytokines can be produced and secreted by immune cells, such as T cells, B cells, macrophages, and mast cells, and include chemokines, interferons, interleukins, lymphokines, and tumor necrosis factors.
As used herein, the term “cytokine production” refers to the expression, synthesis, and secretion (e.g., release) of cytokines by an immune cell.
As used herein, the term “cytotoxicity” refers to the ability of immune cells to kill other cells. Immune cells with cytotoxic functions release toxic proteins (e.g., perforin and granzymes) capable of killing nearby cells. Natural killer cells and cytotoxic T cells (e.g., CD8+ T cells) are the primary cytotoxic effector cells of the immune system, although dendritic cells, neutrophils, eosinophils, mast cells, basophils, macrophages, and monocytes have been shown to have cytotoxic activity.
As used herein, the term “differentiation” refers to the developmental process of lineage commitment. A “lineage” refers to a pathway of cellular development, in which precursor or “progenitor” cells undergo progressive physiological changes to become a specified cell type having a characteristic function (e.g., nerve cell, immune cell, or endothelial cell). Differentiation occurs in stages, whereby cells gradually become more specified until they reach full maturity, which is also referred to as “terminal differentiation.” A “terminally differentiated cell” is a cell that has committed to a specific lineage, and has reached the end stage of differentiation (i.e., a cell that has fully matured). By “committed” or “differentiated” is meant a cell that expresses one or more markers or other characteristic of a cell of a particular lineage.
As used herein, the term “degranulation” refers to a cellular process in which molecules, including antimicrobial and cytotoxic molecules, are released from intracellular secretory vesicles called granules. Degranulation is part of the immune response to pathogens and invading microorganisms by immune cells such as granulocytes (e.g., neutrophils, basophils, and eosinophils), mast cells, and lymphocytes (e.g., natural killer cells and cytotoxic T cells). The molecules released during degranulation vary by cell type and can include molecules designed to kill the invading pathogens and microorganisms or to promote an immune response, such as inflammation.
As used herein, the term “immune dysregulation” refers to a condition in which the immune system is disrupted or responding to an insult. Immune dysregulation includes aberrant activation (e.g., autoimmune disease), activation in response to an injury or disease (e.g., disease-associated inflammation), and activation in response to a pathogen or infection (e.g., parasitic infection). Immune dysregulation also includes under-activation of the immune system (e.g., immunosuppression). Immune dysregulation can be treated using the methods and compositions described herein to direct immune cells to carry out beneficial functions and reduce harmful activities (e.g., reducing activation and pro-inflammatory cytokine secretion in subjects with autoimmune disease).
As used herein, the term “modulating an immune response” refers to any alteration in a cell of the immune system or any alteration in the activity of a cell involved in the immune response. Such regulation or modulation includes an increase or decrease in the number of various cell types, an increase or decrease in the activity of these cells, or any other changes that can occur within the immune system. Cells involved in the immune response include, but are not limited to, T lymphocytes (T cells), B lymphocytes (B cells), natural killer (NK) cells, macrophages, eosinophils, mast cells, dendritic cells and neutrophils. In some cases, “modulating” the immune response means the immune response is stimulated or enhanced, and in other cases “modulating” the immune response means suppression of the immune system.
As used herein, the term “lymph node egress” refers to immune cell exit from the lymph nodes, which occurs during immune cell recirculation. Immune cells that undergo recirculation include lymphocytes (e.g., T cells, B cells, and natural killer cells), which enter the lymph node from blood to survey for antigen and then exit into lymph and return to the blood stream to perform antigen surveillance.
As used herein, the term “lymph node homing” refers to directed migration of immune cells to a lymph node. Immune cells that return to lymph nodes include T cells, B cells, macrophages, and dendritic cells.
As used herein, the term “migration” refers to the movement of immune cells throughout the body. Immune cells can migrate in response to external chemical and mechanical signals. Many immune cells circulate in blood including peripheral blood mononuclear cells (e.g., lymphocytes such as T cells, B cells, and natural killer cells), monocytes, macrophages, dendritic cells, and polymorphonuclear cells (e.g., neutrophils and eosinophils). Immune cells can migrate to sites of infection, injury, or inflammation, or back to the lymph nodes.
As used herein, the term “phagocytosis” refers to the process in which a cell engulfs or ingests material, such as other cells or parts of cells (e.g., bacteria), particles, or dead or dying cells. A cell that capable of performing this function is called a phagocyte. Immune phagocytes include neutrophils, monocytes, macrophages, mast cells, B cells, eosinophils, and dendritic cells.
As used herein, the term “polarization” refers to the ability of an immune cell to shift between different functional states. A cell that is moving toward one of two functional extremes is said to be in the process of becoming more polarized. The term polarization is often used to refer to macrophages, which can shift between states known as M1 and M2. M1, or classically activated, macrophages secrete pro-inflammatory cytokines (e.g., IL-12, TNF, IL-6, IL-8, IL-1B, MCP-1, and CCL2), are highly phagocytic, and respond to pathogens and other environmental insults. M1 macrophages can also be detected by expression of Nos2. M2, or alternatively activated, macrophages secrete a different set of cytokines (e.g., IL-10) and are less phagocytic. M2 macrophages can detected by expression of Arg1, IDO, PF4, CCL24, IL10, and IL4Rα. Cells become polarized in response to external cues such as cytokines, pathogens, injury, and other signals in the tissue microenvironment.
As used herein, the term “pro-inflammatory cytokine” refers to a cytokine secreted from immune cells that promotes inflammation. Immune cells that produce and secrete pro-inflammatory cytokines include T cells (e.g., Th cells) macrophages, B cells, and mast cells. Pro-inflammatory cytokines include interleukin-1 (IL-1, e.g., IL-1β), IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-18, tumor necrosis factor (TNF, e.g., TNFα), interferon gamma (IFNγ), and granulocyte macrophage colony stimulating factor (GMCSF).
As used herein, the term “pro-survival cytokine” refers to a cytokine that promotes the survival of immune cells (e.g., T cells). Pro-survival cytokines include IL-2, IL-4, IL-6, IL-7, and IL-15.
As used herein, the term “recruitment” refers to the re-distribution of immune cells to a particular location (e.g., the site of infection, injury, or inflammation). Immune cells that can undergo this re-distributed and be recruited to sites of injury or disease include monocytes, macrophages, T cells, B cells, dendritic cells, and natural killer cells.
Neuromodulating agents described herein can surprisingly have immune effects, such as effects on T cell polarization, T cell activation, T cell proliferation, cytotoxic T cell activation, circulating monocytes, peripheral blood hematopoietic stem cells, immune cell numbers, macrophage polarization, macrophage phagocytosis, antibody-dependent cell-mediated phagocytosis (ADCP), macrophage activation, macrophage polarization, antigen presentation, antigen presenting cell migration, lymph node immune cell homing and cell egress, NK cell activation, antibody-dependent cell-mediated cytotoxicity (ADCC), mast cell degranulation, neutrophil recruitment, eosinophil recruitment, NKT cell activation, B cell activation, and regulatory T cell differentiation. It has been found that neuromodulating agents thus can have a therapeutic effect on inflammatory and autoimmune conditions.
I. Neuromodulating Agents
Neuromodulating agents described herein can agonize or inhibit genes or proteins in neuromodulatory signaling pathways, in order to treat inflammatory and autoimmune conditions or infection. Neuromodulatory signaling pathway genes are listed in Tables 1A-C (column 1). Additional neurome genes (e.g., genes expressed by a nervous system cell or tissue) are listed in Table 7 and Table 8. The level, activity and/or function of such genes and the proteins they encode can be modulated by pharmaceutical compositions comprising agents described herein. Neuromodulating agents also include neurotransmitter and neuropeptide ligands listed in Table 1B and neuronal growth factors listed in Table 1C.
Neuromodulating agents can be divided into four major categories: 1) neurotransmission modulators (e.g., agents that increase or decrease neurotransmission, such as neurotransmitter agonists or antagonists or neurotoxins), 2) neuropeptide signaling modulators (e.g., neuropeptides and neuropeptide agonists or antagonists), 3) neuronal growth factor modulators (e.g., neuronal growth factors or agents that agonize or antagonize neuronal growth factor signaling), and 4) neurome gene expression modulators (e.g., agents that modulate expression of a gene listed in Table 7 or Table 8). These classes of neuromodulating are described in more detail herein below.
Neurotransmission Modulators
In some embodiments, the neuromodulating agent is a neurotransmission modulator (e.g., an agent that increases or decreases neurotransmission). For example, in some embodiments, the neuromodulating agent is a neurotransmitter or neurotransmitter receptor listed in Table 1A, 1B, Table 7, or Table 8, a modulator of a channel or transporter encoded by a gene in Table 7, or an agonist or antagonist listed in Tables 2A-2K for a corresponding neurotransmitter pathway member. In some embodiments, the neurotransmission modulator is a neurotransmission modulator listed in Table 2M. Neuromodulating agents that increase neurotransmission include neurotransmitters and neurotransmitter receptors listed in Tables 1A, 1B, Table 7, and Table 8 and analogs thereof, and neurotransmitter agonists (e.g., small molecules that agonize a neurotransmitter receptor listed in Table 1A or encoded by a gene in Table 7 or Table 8). Exemplary agonists are listed in Tables 2A-2K. In some embodiments, neurotransmission is increased via administration, local delivery, or stabilization of neurotransmitters (e.g., ligands listed in Tables 1A, 1B, and Table 7). Neurotransmission modulators that increase neurotransmission also include agents that increase neurotransmitter synthesis or release (e.g., agents that increase the activity of a biosynthetic protein encoded by a gene in Table 1A or Table 7 via stabilization, overexpression, or upregulation, or agents that increase the activity of a synaptic or vesicular protein encoded by a gene in Table 7 via stabilization, overexpression, or upregulation), prevent neurotransmitter reuptake or degradation (e.g., agents that block or antagonize transporters encoded by a gene in Table 7 or Table 8 that remove neurotransmitter from the synaptic cleft), increase neurotransmitter receptor activity (e.g., agents that increase the activity of a signaling protein encoded by a gene in Table 1A or Table 7 via stabilization, overexpression, agonism, or upregulation, or agents that upregulate, agonize, or stabilize a neurotransmitter receptor listed in Table 1A or encoded by a gene in Table 7 or Table 8), increase neurotransmitter receptor synthesis or membrane insertion, decrease neurotransmitter degradation, and regulate neurotransmitter receptor conformation (e.g., agents that bind to a receptor and keep it in an “open” or “primed” conformation). In some embodiments, the neurotransmitter receptor is a channel (e.g., a ligand or voltage gated ion channel listed in Table 7 or Table 8), the activity of which can be increased by agonizing, opening, stabilizing, or overexpressing the channel. Neurotransmission modulators that increase neurotransmission further include agents that stabilize a structural protein encoded by a gene in Table 7. Neurotransmission modulators can increase neurotransmission by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more. Exemplary neurotransmission modulators are listed in Table 2M.
Neuromodulating agents that decrease neurotransmission include neurotransmitter antagonists (e.g., small molecules that antagonize a neurotransmitter receptor listed in Table 1A or Table 7 or Table 8). Exemplary antagonists are listed herein below and in Tables 2A-2K. Neurotransmission modulators that decrease neurotransmission also include agents that decrease neurotransmitter synthesis or release (e.g., agents that decrease the activity of a biosynthetic protein encoded by a gene in Table 1A or Table 7 via inhibition or downregulation, or agents that decrease the activity of a synaptic or vesicular protein encoded by a gene in Table 7 via blocking, disrupting, or downregulating, or antagonizing the protein), increase neurotransmitter reuptake or degradation (e.g., agents that agonize, open, or stabilize transporters encoded by a gene in Table 7 or Table 8 that remove neurotransmitter from the synaptic cleft), decrease neurotransmitter receptor activity (e.g., agents that decrease the activity of a signaling protein encoded by a gene in Table 1A or Table 7 via blocking or antagonizing the protein, or agents that block, antagonize, or downregulate a neurotransmitter receptor listed in Table 1A or encoded by a gene in Table 7 or Table 8), decrease neurotransmitter receptor synthesis or membrane insertion, increase neurotransmitter degradation, regulate neurotransmitter receptor conformation (e.g., agents that bind to a receptor and keep it in a “closed” or “inactive” conformation), and disrupt the pre- or postsynaptic machinery (e.g., agents that block or disrupt a structural protein encoded by a gene in Table 7, or agents that block, disrupt, downregulate, or antagonize a synaptic or vesicular protein encoded by a gene in Table 7). In some embodiments, the neurotransmitter receptor is a channel (e.g., a ligand or voltage gated ion channel listed in Table 7 or Table 8), the activity of which can be decreased by blockade, antagonism, or inverse agonism of the channel. Neurotransmission modulators that decrease neurotransmission further include agents that sequester, block, antagonize, or degrade a neurotransmitter listed in Tables 1A, 1B, or encoded by a gene in Table 7. Neurotransmission modulators that decrease or block neurotransmission include antibodies that bind to or block the function of neurotransmitters, neurotransmitter receptor antagonists, and toxins that disrupt synaptic release. Neurotransmission modulators can decrease neurotransmission by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more.
In some embodiments, the neuromodulating agent is an adrenergic receptor pathway modulator (e.g., a blocker or agonist of an adrenergic receptor listed in Table 1A or Table 7, e.g., an adrenergic blocker or agonist listed in Table 2A or Table 2B); a cholinergic receptor pathway modulator (e.g., a blocker or agonist of a cholinergic receptor listed in Table 1A or Table 7, e.g., a cholinergic blocker or agonist listed in Table 2A, 2E, or 2F); a dopamine receptor pathway modulator (e.g., a blocker or agonist of a dopamine receptor listed in Table 1A or Table 7, e.g., a dopamine blocker or agonist listed in Table 2A or 2C); a serotonin receptor pathway modulator (e.g., a blocker or agonist of a serotonin receptor listed in Table 1A, Table 7, or Table 8, e.g., a serotonin blocker or agonist listed in Table 2A or 2G); a GABA receptor pathway modulator (e.g., a blocker or agonist of a GABA receptor listed in Table 1A, Table 7, or Table 8, e.g., a GABA blocker or agonist listed in Table 2A or 2D); a glutamate receptor pathway modulator (e.g., a blocker or agonist of a glutamate receptor listed in Table 1A, Table 7, or Table 8, e.g., a glutamate blocker or agonist listed in Table 2A or 2H).
scutellaria constituents;
speciosa, and oroxylin A), dopamine releasing
Neurotoxins
In some embodiments, the neurotransmission modulator is a neurotoxin (e.g., a neurotoxin listed in Table 3), or a functional fragment or variant thereof. Neurotoxins include, without limitation, convulsants, nerve agents, parasympathomimetics, and uranyl compounds. Neurotoxins may be bacterial in origin, or fungal in origin, or plant in origin, or derived from a venom or other natural product. Neurotoxins may be synthetic or engineered molecules, derived de novo or from a natural product. Suitable neurotoxins include but are not limited to botulinum toxin and conotoxin. Exemplary neurotoxins are listed in Table 3.
Neurotransmission modulators also include antibodies that bind to neurotransmitters or neurotransmitter receptors listed in Tables 1A, 1B, Table 7, and Table 8 and decrease neurotransmission. These antibodies include blocking and neutralizing antibodies. Antibodies to neurotransmitters or neurotransmitter receptors listed in Tables 1A, 1B, Table 7, and Table 8 can be generated by those of skill in the art using well established and routine methods.
Neuropeptide Signaling Modulators
In some embodiments, a neuromodulating agent is a neuropeptide signaling modulator (e.g., an agent that increases or decreases neuropeptide signaling), such as a blocker or agonist of a neuropeptide receptor listed in Table 1A. Neuromodulating agents that increase neuropeptide signaling include neuropeptides and neuropeptide receptors (e.g., a neuropeptide (ligand) listed in Table 1A, Table 1B, or Table 7, e.g., a neuropeptide having the sequence referenced by accession number or Entrez Gene ID of a neuropeptide listed in Table 1A, Table 1B, or Table 7, or an analog thereof, e.g., a sequence having at least 70%, 75%, 80%, 85%, 90%, 95%, 98%, 99% identity to the sequence referenced by accession number or Entrez Gene ID. The neuromodulating agent can be an endocannabinoid, amine, amino acid, purine, gas, gastrin, opioid, monoamine, secretin, tachykinin, neuropeptide, neurohypophyseal, orexin, or somatostatin, e.g., listed in Table 1B. In some embodiments, neuropeptide signaling is increased by administering, locally delivering, or stabilizing a neuropeptide listed in Tables 1A, 1B, or endoced by a gene in Table 7. Neuromodulating agents that increase neuropeptide signaling also include agents that increase neuropeptide receptor activity (e.g., neuromodulating agents that increase the activity of a neuropeptide receptor or signaling protein listed in Table 1A or encoded by a gene in Table 7 via upregulation, stabilization, agonism, or overexpression). Exemplary neuropeptide agonists are listed in Tables 2A and 2L. Neuromodulating agents that increase neuropeptide signaling also include agents that reduce neuropeptide degradation or reuptake, agents that increase neuropeptide synthesis or release (e.g., agents that increase the activity of a biosynthetic protein encoded by a gene in Table 1A or Table 7 via stabilization, overexpression, or upregulation), increase neuropeptide receptor synthesis or membrane insertion, and regulate neuropeptide receptor conformation (e.g., agents that bind to a receptor and keep it in an “open” or “primed” conformation). Neuropeptide signaling modulators can increase neuropeptide signaling by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more.
Neuromodulating agents that decrease neuropeptide signaling include agents that decrease neuropeptide receptor activity (e.g., neuromodulating agents that decrease the activity of a neuropeptide receptor or signaling protein listed in Table 1A or encoded by a gene in Table 7 via blockade, antagonism, or downregulation). Exemplary neuropeptide antagonists are listed in Tables 2A and 2L. Neuromodulating agents that decrease neuropeptide signaling also include agents that bind to neuropeptides or block their interaction with receptors (e.g., neuropeptide blocking or neutralizing antibodies), agents that increase neuropeptide degradation or clearance, agents that decrease neuropeptide synthesis or release (e.g., agents that decrease the activity of a biosynthetic protein encoded by a gene in Table 1A or Table 7 via inhibition or downregulation), decrease neuropeptide receptor synthesis or membrane insertion, and regulate neuropeptide receptor conformation (e.g., agents that bind to a receptor and keep it in a “closed” or “inactive” conformation). In some embodiments, neuropeptide signaling is decreased by sequestering, blocking, antagonizing, or degrading a neuropeptide listed in Tables 1A, 1B, or encoded by a gene in Table 7. Neuropeptide signaling modulators can decrease neuropeptide signaling by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% or more.
Neuropeptide signaling modulators also include antibodies that bind to neuropeptides or neuropeptide receptors listed in Tables 1A, 1B, and Table 7 and decrease neuropeptide signaling. These antibodies include blocking and neutralizing antibodies. Exemplary neuropeptide signaling blocking and neutralizing antibodies are listed below in Table 4. Antibodies to neuropeptides and neuropeptide receptors listed in Tables 1A, 1B, and Table 7 can also be generated by those of skill in the art using well established and routine methods.
Neuronal Growth Factor Modulators
In some embodiments, a neuromodulating agent is a neuronal growth factor modulator (e.g., an agent that decreases or increases neurogenic/axonogenic signals, e.g., a neuronal growth factor or neuronal growth factor mimic, or an agonist or antagonist of a neuronal growth factor or neuronal growth factor receptor). For example, the neuromodulating agent is a neuronal growth factor listed in Table 1C or Table 7, e.g., a neuronal growth factor having the sequence referenced by accession number or Entrez Gene ID in Table 1C or Table 7, or an analog thereof, e.g., a sequence having at least 75%, 80%, 85%, 90%, 90%, 98%, 99% identity to the sequence referenced by accession number or Entrez Gene ID in Table 1C or Table 7. Neuronal growth factor modulators also include agonists and antagonists of neuronal growth factors and neuronal growth factor receptors listed in Table 1C or Table 7. A neuronal growth factor modulator may increase or decrease neurogenesis, neuronal growth, neuronal differentiation, neurite outgrowth, synapse formation, synaptic maturation, synaptic refinement, or synaptic stabilization. Neuronal growth factor modulators regulate innervation and the formation of synaptic connections between two or more neurons and between neurons and non-neural cells. A neuronal growth factor modulator may block one or more of these processes (e.g., through the use of antibodies that block neuronal growth factors or their receptors) or promote one or more of these processes (e.g., through the use of neuronal growth factors or analogs thereof). Neuronal growth factor modulators can increase or decrease one of the above mentioned processes by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98%, 200%, 500% or more.
In some embodiments, the neuromodulating agent decreases neurogenic/axonogenic signals, e.g., the method includes administering to the subject or contacting a cell with a neuromodulating agent (e.g., a neuronal growth factor modulator) in an amount and for a time sufficient to decrease neurogenesis or axonogenesis. For example, the neuromodulating agent that leads to a decrease in neurogenesis or axonogenesis is a blocking or neutralizing antibody against a neurotrophic factor. Relevant neurotrophic factors include NGF, BDNF, ProNGF, Sortilin, TGFβ and TGFβ family ligands and receptors (e.g., TGFβR1, TGFβR2, TGFβ1, TGFβ2 TGFβ4), GFRα family ligands and receptors (e.g., GFRα1, GFRα2, GFRα3, GFRα4, GDNF), CNTF, LIF, neurturin, artemin, persephin, neurotrophin, chemokines, cytokines, and others listed in Table 1C or Table 7. Receptors for these factors can also be targeted, as well as downstream signaling pathways including Jak-Stat inducers, and cell cycle and MAPK signaling pathways. In some embodiments, the neuronal growth factor modulator decreases neurogenesis, axonogenesis or any of the processes mentioned above by sequestering, blocking, antagonizing, degrading, or downregulating a neuronal growth factor or a neuronal growth factor receptor listed in Table 1C or encoded by a gene in Table 7. In some embodiments, the neuronal growth factor modulator decreases neurogenesis, axonogenesis or any of the processes mentioned above by blocking or antagonizing a signaling protein encoded by a gene in Table 7 that is downstream of a neuronal growth factor. In some embodiments, the neuronal growth factor modulator decreases neurogenesis, axonogenesis or any of the processes mentioned above by blocking, disrupting, or antagonizing a synaptic or structural protein encoded by a gene in Table 7. Neurogenesis, axonogenesis, neuronal growth, neuronal differentiation, neurite outgrowth, synapse formation, synaptic maturation, synaptic refinement, or synaptic stabilization can be decreased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80% or more, compared to before the administration. Neurogenesis, axonogenesis, neuronal growth, neuronal differentiation, neurite outgrowth, synapse formation, synaptic maturation, synaptic refinement, or synaptic stabilization can be decreased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%.
In some embodiments, the neuromodulating agent is one that increases neurogenic/axonogenic signals, e.g., the method includes administering to the subject or contacting a cell with a neuromodulating agent (e.g., a neuronal growth factor modulator) in an amount and for a time sufficient to increase neurogenesis or axonogenesis. For example, the neuromodulating agent that leads to an increase in neurogenesis or axonogenesis is a neurotrophic factor. Relevant neurotrophic factors include NGF, BDNF, ProNGF, Sortilin, TGFβ and TGFβ family ligands and receptors (e.g., TGFβR1, TGFβR2, TGFβ1, TGFβ2 TGFβ4), GFRα family ligands and receptors (e.g., GFRα1, GFRα2, GFRα3, GFRα4, GDNF), CNTF, LIF, neurturin, artemin, persephin, neurotrophin, chemokines, cytokines, and others listed in Table 1C or Table 7. Receptors for these factors may also be targeted, as well as downstream signaling pathways including Jak-Stat inducers, and cell cycle and MAPK signaling pathways. In some embodiments, the neuronal growth factor modulator increases neurogenesis, axonogenesis or any of the processes mentioned above by administering, locally delivering, or stabilizing a neuronal growth factor listed in Table 1C or encoded by a gene in Table 7, or by upregulating, agonizing, or stabilizing a neuronal growth factor receptor listed in Table 1C or encoded by a gene in Table 7. In some embodiments, the neuronal growth factor modulator increases neurogenesis, axonogenesis or any of the processes mentioned above by stabilizing, agonizing, overexpressing, or upregulating a signaling protein encoded by a gene in Table 7 that is downstream of a neuronal growth factor. In some embodiments, the neuronal growth factor modulator increases neurogenesis, axonogenesis or any of the processes mentioned above by stabilizing, overexpressing, or upregulating a synaptic or structural protein encoded by a gene in Table 7. Neurogenesis, axonogenesis, neuronal growth, neuronal differentiation, neurite outgrowth, synapse formation, synaptic maturation, synaptic refinement, or synaptic stabilization can be increased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80% or more, compared to before the administration. Neurogenesis, axonogenesis, neuronal growth, neuronal differentiation, neurite outgrowth, synapse formation, synaptic maturation, synaptic refinement, or synaptic stabilization can be increased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%.
In some embodiments, the neuromodulating agent increases or decreases the number of nerves in an affected tissue. For example, the subject has a peripheral neuropathy or neurodegenerative disorder characterized by an immunological phenotype (e.g., Hirschsprung's disease, spinal cord injury, peripheral neuropathy, chemotherapy-induced neuropathy, diabetic neuropathy, Riley-Day syndrome, familial dysautonomia, or other hereditary sensory and autonomic neuropathies). For example, the neuromodulating agent is administered in an amount and for a time sufficient to induce neurogenesis/axonogenesis. The neuromodulating agent can be, e.g., a neurotrophic factor or neuronal growth factor listed in Table 1C or Table 7 or an analog thereof.
Antibodies
Neuronal growth factor modulators also include antibodies that bind to neuronal growth factors or neuronal growth factor receptors and decrease their signaling (e.g., blocking antibodies). Exemplary neuronal growth factor blocking antibodies are listed below in Table 5. Antibodies to neuronal growth factors listed in Table 1C and Table 7 can also be generated by those of skill in the art using well established and routine methods.
Neuronal growth factor modulators also include agents that agonize or antagonize neuronal growth factors and neuronal growth factor receptors. For example, neuronal growth factor modulators include TNF inhibitors (e.g., etanercept, thalidomide, lenalidomide, pomalidomide, pentoxifylline, bupropion, and DOI), TGFβ1 inhibitors, (e.g., disitertide (P144)), TGFβ2 inhibitors (e.g., trabedersen (AP12009)). Exemplary neuronal growth factor agonists and antagonists are listed in Table 6.
Modulators of Gene Expression
In some embodiments, a neuromodulating agent is a neurome gene expression modulator (e.g., an agent that affects the expression of a neurome gene listed in Table 7 or Table 8, e.g., a channel, transporter, neuropeptide, neurotransmitter, neurotrophic, signaling, synaptic, biosynthesis, ligand, receptor, structural, or vesicular gene). A neurome gene expression modulator can affect gene expression through modulation of gene transcription, gene translation, or protein levels. Neurome gene expression modulators may increase gene expression through epigenetic modifications (e.g., demethylation or acetylation), post-translational modifications (e.g., reducing ubiquitination, or altering sumoylation or phosphorylation), by increasing mRNA translation and stability, or through delivery of exogenous genetic material (e.g., a viral vector expressing a gene of interest). In some embodiments, the neurome gene expression modulator increases neurome gene expression by stabilizing, upregulating, or promoting overexpression of a biosynthesis, channel, ligand, receptor, signaling, structural, synaptic, transporter, vesicular, neuropeptide, neurotransmitter, or neurotrophic gene in Table 7 or a channel or transporter gene in Table 8. Neurome gene expression modulators may decrease gene expression through epigenetic modifications (e.g., methylation or deacetylation), post-translational modifications (e.g., increasing ubiquitination, or altering sumoylation or phosphorylation), or by decreasing mRNA translation and stability (e.g., using miRNA, siRNA, shRNA, or other therapeutic RNAs). In some embodiments, the neurome gene expression modulator decreases neurome gene expression by downregulating, inhibiting, or disrupting expression of a biosynthesis, channel, ligand, receptor, signaling, structural, synaptic, transporter, vesicular, neuropeptide, neurotransmitter, or neurotrophic gene in Table 7 or a channel or transporter gene in Table 8. A neurome gene expression modulator may increase or decrease gene expression by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98%, or more.
In some embodiments, a neurome gene expression modulator increases or decreases the expression of a neurome gene listed in Table 12 or Table 7 to modulate an autoimmune or inflammatory disease or condition, or an infection (e.g., through altering the activity of the immune cell expressing the modulated gene). The neurome gene expression modulator can be introduced systemically (e.g., injected intravenously into blood stream), or administered locally (e.g., administered to or near a lymph node, secondary lymphoid organ, or affected tissue). The neurome gene expression modulator can also be used to contact an immune cell in vitro before administering the cell to a subject (e.g., a human subject or animal model).
Agent Modalities
A neuromodulating agent can be a number of different modalities. A neuromodulating agent can be a nucleic acid molecule (e.g., DNA molecule or RNA molecule, e.g., mRNA, guide RNA (gRNA), or inhibitory RNA molecule (e.g., siRNA, shRNA, or miRNA), or a hybrid DNA-RNA molecule), a small molecule (e.g., a neurotransmitter, an agonist, antagonist, or an epigenetic modifier), a peptide, or a polypeptide (e.g., an antibody molecule, e.g., an antibody or antigen binding fragment thereof, or a neuropeptide). A neuromodulating agent can also be a viral vector expressing a neurome gene or a cell infected with a viral vector. Any of these modalities can be a neuromodulating agent directed to target (e.g., to agonize or to inhibit) a gene or protein in a neurotransmitter, neuropeptide, neuronal growth factor, or neurome gene (e.g., biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular) pathway described herein (e.g., a gene or protein listed in Tables 1A-1C, Table 7, or Table 8).
The nucleic acid molecule, small molecule, peptide, polypeptide, or antibody molecule can be modified. For example, the modification can be a chemical modification, e.g., conjugation to a marker, e.g., fluorescent marker or a radioactive marker. In other examples, the modification can include conjugation to a molecule that enhances the stability or half-life of the neuromodulating agent. The modification can also include conjugation to an antibody to target the agent to a particular cell or tissue. Additionally, the modification can be a chemical modification, packaging modification (e.g., packaging within a nanoparticle or microparticle), or targeting modification to prevent the agent from crossing the blood brain barrier.
Small Molecules
Numerous small molecule neuromodulating agents useful in the methods of the invention are described herein and additional small molecule neuromodulating agents useful as therapies for inflammatory conditions or autoimmune diseases or infections can also be screened based on their ability to modulate sympathetic and parasympathetic neural pathways. Small molecules include, but are not limited to, small peptides, peptidomimetics (e.g., peptoids), amino acids, amino acid analogs, synthetic polynucleotides, polynucleotide analogs, nucleotides, nucleotide analogs, organic and inorganic compounds (including heterorganic and organomettallic compounds) generally having a molecular weight less than about 5,000 grams per mole, e.g., organic or inorganic compounds having a molecular weight less than about 2,000 grams per mole, e.g., organic or inorganic compounds having a molecular weight less than about 1,000 grams per mole, e.g., organic or inorganic compounds having a molecular weight less than about 500 grams per mole, and salts, esters, and other pharmaceutically acceptable forms of such compounds.
In some embodiments, the neuromodulating agent is an agonist or antagonist listed in column 2 or column 3 of Table 2A or column 2 of Tables 2B-2L, which is directed to the corresponding neurotransmitter pathway member listed in column 1 of Tables 2A-2L. In some embodiments, the neuromodulating agent is a neurotransmitter or neuropeptide listed in Table 1A, 1B, or encoded by a gene in Table 7, or a neuronal growth factor listed in Table 1C or encoded by a gene in Table 7. Agonists and antagonists can be used to treat a disorder or condition described herein. A pharmaceutical composition comprising the agonist, antagonist, neurotransmitter, neuropeptide, or neuronal growth factor can be formulated for treatment of an inflammatory or autoimmune condition of infection described herein. In some embodiments, a pharmaceutical composition that includes the agonist or antagonist is formulated for local administration, e.g., to the affected site in a subject.
Polypeptides
In embodiments, a neuromodulating agent described herein comprises a neuromodulating agent polypeptide or an analog thereof. For example, a neuromodulating agent described herein is a neuropeptide or an analog thereof.
The neuromodulating agent can be a neuropeptide listed in Table 1A or 1B, a neuronal growth factor listed in Table 1C, or a protein encoded by a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular protein), wherein the primary sequence of the neuromodulating agent is provided by reference to accession number or Entrez Gene ID. The agent can be a polypeptide having the sequence referenced by accession number or Entrez Gene ID of a neuropeptide listed in Table 1A or 1B, a neuronal growth factor listed in Table 1C, or a protein encoded by a neurome gene listed in Table 7, or an analog thereof, e.g., a sequence having at least 75%, 80%, 85%, 90%, 90%, 98%, 99% or 100% identity to the sequence referenced by accession number or Entrez Gene ID.
Percent identity in the context of two or more polypeptide sequences or nucleic acids, refers to two or more sequences that are the same. Two sequences are “substantially identical” if two sequences have a specified percentage of amino acid residues or nucleotides that are the same (e.g., at least 60% identity, e.g., at least 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% identity, e.g., over a specified region, or, when not specified, over the entire sequence), when compared and aligned for maximum correspondence over a comparison window, or designated region as measured using a sequence comparison algorithms or by manual alignment and visual inspection. In some cases, the identity (or substantial identity) exists over a region that is at least about 50 nucleotides (or 10 amino acids) in length, or more preferably over a region that is 100 to 500 or 1000 or more nucleotides (or 20, 50, 200 or more amino acids) in length.
For sequence comparison, typically one sequence acts as a reference sequence, to which test sequences are compared. When using a sequence comparison algorithm, test and reference sequences are entered into a computer, subsequence coordinates are designated, if necessary, and sequence algorithm program parameters are designated. Default program parameters can be used, or alternative parameters can be designated. The sequence comparison algorithm then calculates the percent sequence identities for the test sequences relative to the reference sequence, based on the program parameters. Methods of alignment of sequences for comparison are well known in the art. Optimal alignment of sequences for comparison can be conducted, e.g., by the local homology algorithm of Smith and Waterman, Adv. Appl. Math. 2:482c, 1970, by the homology alignment algorithm of Needleman and Wunsch, J. Mol. Biol. 48:443, 1970, by the search for similarity method of Pearson and Lipman, Proc. Nat'l. Acad. Sci. USA 85:2444, 1988, by computerized implementations of these algorithms (GAP, BESTFIT, FASTA, and TFASTA in the Wisconsin Genetics Software Package, Genetics Computer Group, 575 Science Dr., Madison, Wis.), or by manual alignment and visual inspection (see, e.g., Brent et al., Current Protocols in Molecular Biology, 2003).
Two examples of algorithms that are suitable for determining percent sequence identity and sequence similarity are the BLAST and BLAST 2.0 algorithms, which are described in Altschul et al., Nuc. Acids Res. 25:3389, 1977; and Altschul et al., J. Mol. Biol. 215:403, 1990, respectively. Software for performing BLAST analyses is publicly available through the National Center for Biotechnology Information.
The percent identity between two amino acid sequences can also be determined using the algorithm of E. Meyers and W. Miller, Comput. Appl. Biosci. 4:11, 1988) which has been incorporated into the ALIGN program (version 2.0), using a PAM120 weight residue table, a gap length penalty of 12 and a gap penalty of 4. In addition, the percent identity between two amino acid sequences can be determined using the Needleman and Wunsch, J. Mol. Biol. 48:444, 1970) algorithm which has been incorporated into the GAP program in the GCG software package (available at www.gcg.com), using either a Blossom 62 matrix or a PAM250 matrix, and a gap weight of 16, 14, 12, 10, 8, 6, or 4 and a length weight of 1, 2, 3, 4, 5, or 6.
Methods of making a therapeutic polypeptide are routine in the art. See, in general, Smales & James (Eds.), Therapeutic Proteins: Methods and Protocols (Methods in Molecular Biology), Humana Press 2005; and Crommelin, Sindelar & Meibohm (Eds.), Pharmaceutical Biotechnology: Fundamentals and Applications, Springer 2013.
Some methods for producing a neuromodulating agent polypeptide involve expression in mammalian cells, although recombinant proteins can also be produced using insect cells, yeast, bacteria, or other cells under the control of appropriate promoters. Mammalian expression vectors may comprise nontranscribed elements such as an origin of replication, a suitable promoter and enhancer, and other 5′ or 3′ flanking nontranscribed sequences, and 5′ or 3′ nontranslated sequences such as necessary ribosome binding sites, a polyadenylation site, splice donor and acceptor sites, and termination sequences. DNA sequences derived from the SV40 viral genome, for example, SV40 origin, early promoter, enhancer, splice, and polyadenylation sites may be used to provide the other genetic elements required for expression of a heterologous DNA sequence. Appropriate cloning and expression vectors for use with bacterial, fungal, yeast, and mammalian cellular hosts are described in Green & Sambrook, Molecular Cloning: A Laboratory Manual (Fourth Edition), Cold Spring Harbor Laboratory Press 2012.
Various mammalian cell culture systems can be employed to express and manufacture recombinant protein. Examples of mammalian expression systems include CHO cells, COS cells, HeLA and BHK cell lines. Processes of host cell culture for production of protein therapeutics are described in Zhou and Kantardjieff (Eds.), Mammalian Cell Cultures for Biologics Manufacturing (Advances in Biochemical Engineering/Biotechnology), Springer 2014.
Purification of protein therapeutics is known and is described, e.g., in Franks, Protein Biotechnology: Isolation, Characterization, and Stabilization, Humana Press 2013; and in Cutler, Protein Purification Protocols (Methods in Molecular Biology), Humana Press 2010.
Formulation of protein therapeutics is known and is described, e.g., in Meyer (Ed.), Therapeutic Protein Drug Products: Practical Approaches to formulation in the Laboratory, Manufacturing, and the Clinic, Woodhead Publishing Series 2012.
Antibodies
The neuromodulating agent can be an antibody or antigen binding fragment thereof. For example, a neuromodulating agent described herein is an antibody that blocks or potentiates activity and/or function of a receptor, neuropeptide, neurotransmitter or transporter listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene).
The making and use of therapeutic antibodies against a target antigen (e.g., against a protein in a neurotransmitter pathway described herein (e.g., a protein product of a gene listed in Table 1)) is known in the art. See, for example, the references cited herein above, as well as Zhiqiang An (Editor), Therapeutic Monoclonal Antibodies: From Bench to Clinic. 1st Edition. Wiley 2009, and also Greenfield (Ed.), Antibodies: A Laboratory Manual. (Second edition) Cold Spring Harbor Laboratory Press 2013, for methods of making recombinant antibodies, including antibody engineering, use of degenerate oligonucleotides, 5′-RACE, phage display, and mutagenesis; antibody testing and characterization; antibody pharmacokinetics and pharmacodynamics; antibody purification and storage; and screening and labeling techniques.
Synthetic mRNA
In some embodiments, the neuromodulating agent is an mRNA molecule, e.g., a synthetic mRNA molecule encoding a protein listed in Tables 1A-1C, or a protein encoded by a gene in Table 7 or Table 8. The mRNA molecule may increase the level (e.g., protein and/or mRNA level) and/or activity or function of a neurotransmitter, neurotransmitter receptor, neuropeptide, neuropeptide receptor, neuronal growth factor, or neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), e.g., a positive regulator of function. The mRNA molecule can encode a neuromodulating agent or a fragment thereof. For example, the mRNA molecule encodes a polypeptide having at least 50% (e.g., at least 50%, 60%, 70%, 80%, 90%, 95%, 97%, 99%, or greater) identity to the amino acid sequence of a neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. In other examples, the mRNA molecule has at least 50% (e.g., at least 50%, 60%, 70%, 80%, 90%, 95%, 97%, 99%, or greater) identity to the nucleic acid sequence of a neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene). The mRNA molecule can encode an amino acid sequence differing by no more than 30 (e.g., no more than 30, 20, 10, 5, 4, 3, 2, or 1) amino acids to the amino acid sequence of a neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. The mRNA molecule can have a sequence encoding a fragment of a neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. For example, the fragment comprises 10-20, 20-40, 40-60, 60-80, 80-100, 100-120, 120-140, 140-160, 160-180, 180-200, 200-250, 250-300, 300-400, 400-500, 500-600, or more amino acids in length. In embodiments, the fragment is a functional fragment, e.g., having at least 20%, e.g., at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or greater, of an activity of a full length neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. In embodiments, the mRNA molecule increases the level and/or activity or function of or encodes a neuromodulating agent (or fragment thereof).
The synthetic mRNA molecule can be modified, e.g., chemically. The mRNA molecule can be chemically synthesized or transcribed in vitro. The mRNA molecule can be disposed on a plasmid, e.g., a viral vector, bacterial vector, or eukaryotic expression vector. In some examples, the mRNA molecule can be delivered to cells by transfection, electroporation, or transduction (e.g., adenoviral or lentiviral transduction).
In some embodiments, the modified RNA encoding a neuromodulating agent of interest described herein has modified nucleosides or nucleotides. Such modifications are known and are described, e.g., in WO2012019168. Additional modifications are described, e.g., in WO2015038892; WO2015038892; WO2015089511; WO2015196130; WO2015196118 and WO2015196128A2.
In some embodiments, the modified RNA encoding a polypeptide of interest described herein has one or more terminal modifications, e.g., a 5′ Cap structure and/or a poly-A tail (e.g., of between 100-200 nucleotides in length). The 5′ cap structure may be selected from the group consisting of CapO, CapI, ARCA, inosine, NI-methyl-guanosine, 2′ fluoro-guanosine, 7-deaza-guanosine, 8-oxo-guanosine, 2-amino-guanosine, LNA-guanosine, and 2-azido-guanosine. In some cases, the modified RNAs also contain a 5′ UTR comprising at least one Kozak sequence, and a 3′ UTR. Such modifications are known and are described, e.g., in WO2012135805 and WO2013052523. Additional terminal modifications are described, e.g., in WO2014164253 and WO2016011306. WO2012045075 and WO2014093924
Chimeric enzymes for synthesizing capped RNA molecules (e.g., modified mRNA) which may include at least one chemical modification are described in WO2014028429.
In some embodiments, a modified mRNA may be cyclized, or concatemerized, to generate a translation competent molecule to assist interactions between poly-A binding proteins and 5′-end binding proteins. The mechanism of cyclization or concatemerization may occur through at least 3 different routes: 1) chemical, 2) enzymatic, and 3) ribozyme catalyzed. The newly formed 5′-/3′-linkage may be intramolecular or intermolecular. Such modifications are described, e.g., in WO2013151736.
Methods of making and purifying modified RNAs are known and disclosed in the art. For example, modified RNAs are made using only in vitro transcription (IVT) enzymatic synthesis. Methods of making IVT polynucleotides are known in the art and are described in WO2013151666, WO2013151668, WO2013151663, WO2013151669, WO2013151670, WO2013151664, WO2013151665, WO2013151671, WO2013151672, WO2013151667 and WO2013151736.S Methods of purification include purifying an RNA transcript comprising a polyA tail by contacting the sample with a surface linked to a plurality of thymidines or derivatives thereof and/or a plurality of uracils or derivatives thereof (polyT/U) under conditions such that the RNA transcript binds to the surface and eluting the purified RNA transcript from the surface (WO2014152031); using ion (e.g., anion) exchange chromatography that allows for separation of longer RNAs up to 10,000 nucleotides in length via a scalable method (WO2014144767); and subjecting a modified mRNA sample to DNAse treatment (WO2014152030).
Formulations of modified RNAs are known and are described, e.g., in WO2013090648. For example, the formulation may be, but is not limited to, nanoparticles, poly(lactic-co-glycolic acid)(PLGA) microspheres, lipidoids, lipoplex, liposome, polymers, carbohydrates (including simple sugars), cationic lipids, fibrin gel, fibrin hydrogel, fibrin glue, fibrin sealant, fibrinogen, thrombin, rapidly eliminated lipid nanoparticles (reLNPs) and combinations thereof.
Modified RNAs encoding polypeptides in the fields of human disease, antibodies, viruses, and a variety of in vivo settings are known and are disclosed in for example, Table 6 of International Publication Nos. WO2013151666, WO2013151668, WO2013151663, WO2013151669, WO2013151670, WO2013151664, WO2013151665, and WO2013151736; Tables 6 and 7 of International Publication No. WO2013151672; Tables 6, 178 and 179 of International Publication No. WO2013151671; Tables 6, 185 and 186 of International Publication No. WO2013151667. Any of the foregoing may be synthesized as an IVT polynucleotide, chimeric polynucleotide or a circular polynucleotide, and each may comprise one or more modified nucleotides or terminal modifications.
Inhibitory RNA
In some embodiments, the neuromodulating agent is an inhibitory RNA molecule, e.g., that acts by way of the RNA interference (RNAi) pathway. An inhibitory RNA molecule can decrease the expression level (e.g., protein level or mRNA level) of a neurotransmitter, neuropeptide, receptor, neuronal growth factor, or neurome gene listed herein. For example, an inhibitory RNA molecule includes a short interfering RNA, short hairpin RNA, and/or a microRNA that targets a full length neuromodulating agent listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. A siRNA is a double-stranded RNA molecule that typically has a length of about 19-25 base pairs. A shRNA is a RNA molecule comprising a hairpin turn that decreases expression of target genes via RNAi. shRNAs can be delivered to cells in the form of plasmids, e.g., viral or bacterial vectors, e.g., by transfection, electroporation, or transduction). A microRNA is a non-coding RNA molecule that typically has a length of about 22 nucleotides. MiRNAs bind to target sites on mRNA molecules and silence the mRNA, e.g., by causing cleavage of the mRNA, destabilization of the mRNA, or inhibition of translation of the mRNA. In embodiments, the inhibitory RNA molecule decreases the level and/or activity of a negative regulator of function or a positive regulator of function. In other embodiments, the inhibitor RNA molecule decreases the level and/or activity of an inhibitor of a positive regulator of function.
An inhibitory RNA molecule can be modified, e.g., to contain modified nucleotides, e.g., 2′-fluoro, 2′-o-methyl, 2′-deoxy, unlocked nucleic acid, 2′-hydroxy, phosphorothioate, 2′-thiouridine, 4′-thiouridine, 2′-deoxyuridine. Without being bound by theory, it is believed that certain modification can increase nuclease resistance and/or serum stability, or decrease immunogenicity.
In some embodiments, the inhibitory RNA molecule decreases the level and/or activity or function of a neuromodulating agent. In embodiments, the inhibitory RNA molecule inhibits expression of a neuromodulating agent (e.g., inhibits translation to protein). In other embodiments, the inhibitor RNA molecule increases degradation of a neuromodulating agent and/or decreases the stability (i.e., half-life) of a neuromodulating agent. The inhibitory RNA molecule can be chemically synthesized or transcribed in vitro.
The making and use of inhibitory therapeutic agents based on non-coding RNA such as ribozymes, RNAse P, siRNAs, and miRNAs are also known in the art, for example, as described in Sioud, RNA Therapeutics: Function, Design, and Delivery (Methods in Molecular Biology). Humana Press 2010.
Gene Editing
In some embodiments, the neuromodulating agent is a component of a gene editing system. For example, the neuromodulating agent introduces an alteration (e.g., insertion, deletion (e.g., knockout), translocation, inversion, single point mutation, or other mutation) in a gene related to a neurotransmitter pathway, e.g., a neuropeptide or receptor gene described in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. Exemplary gene editing systems include the zinc finger nucleases (ZFNs), Transcription Activator-Like Effector-based Nucleases (TALEN), and the clustered regulatory interspaced short palindromic repeat (CRISPR) system. ZFNs, TALENs, and CRISPR-based methods are described, e.g., in Gaj et al. Trends Biotechnol. 31.7 (2013):397-405.
CRISPR refers to a set of (or system comprising a set of) clustered regularly interspaced short palindromic repeats. A CRISPR system refers to a system derived from CRISPR and Cas (a CRISPR-associated protein) or other nuclease that can be used to silence or mutate a gene described herein. The CRISPR system is a naturally occurring system found in bacterial and archeal genomes. The CRISPR locus is made up of alternating repeat and spacer sequences. In naturally-occurring CRISPR systems, the spacers are typically sequences that are foreign to the bacterium (e.g., plasmid or phage sequences). The CRISPR system has been modified for use in gene editing (e.g., changing, silencing, and/or enhancing certain genes) in eukaryotes. See, e.g., Wiedenheft et al., Nature 482: 331, 2012. For example, such modification of the system includes introducing into a eukaryotic cell a plasmid containing a specifically-designed CRISPR and one or more appropriate Cas proteins. The CRISPR locus is transcribed into RNA and processed by Cas proteins into small RNAs that comprise a repeat sequence flanked by a spacer. The RNAs serve as guides to direct Cas proteins to silence specific DNA/RNA sequences, depending on the spacer sequence. See, e.g., Horvath et al., Science 327: 167, 2010; Makarova et al., Biology Direct 1:7, 2006; Pennisi, Science 341: 833, 2013. In some examples, the CRISPR system includes the Cas9 protein, a nuclease that cuts on both strands of the DNA. See, e.g., i.d.
In some embodiments, in a CRISPR system for use described herein, e.g., in accordance with one or more methods described herein, the spacers of the CRISPR are derived from a target gene sequence, e.g., from a sequence (with reference to the accession number) of a neurotransmitter pathway gene, e.g., a neuropeptide or receptor gene listed in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided.
In some embodiments, the neuromodulating agent includes a guide RNA (gRNA) for use in a clustered regulatory interspaced short palindromic repeat (CRISPR) system for gene editing. In embodiments, the neuromodulating agent comprises a zinc finger nuclease (ZFN), or an mRNA encoding a ZFN, that targets (e.g., cleaves) a nucleic acid sequence (e.g., DNA sequence) of a gene related to a neurotransmitter pathway, e.g., a neuropeptide or receptor gene described in Table 1. In embodiments, the neuromodulating agent comprises a TALEN, or an mRNA encoding a TALEN, that targets (e.g., cleaves) a nucleic acid sequence (e.g., DNA sequence) in a gene related to a neurotransmitter pathway, e.g., a neuropeptide or receptor gene described in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided.
For example, the gRNA can be used in a CRISPR system to engineer an alteration in a gene (e.g., a gene related to a neurotransmitter pathway, e.g., a neuropeptide, neurotransmitter, neuronal growth factor or receptor gene described in Tables 1A, 1B, or 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene)). In other examples, the ZFN and/or TALEN can be used to engineer an alteration in a gene (e.g., a gene related to a neurotransmitter pathway, e.g., a neuropeptide, neurotransmitter, neuronal growth factor, or receptor gene described in Tables 1A, 1B, or 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene)). Exemplary alterations include insertions, deletions (e.g., knockouts), translocations, inversions, single point mutations, or other mutations. The alteration can be introduced in the gene in a cell, e.g., in vitro, ex vivo, or in vivo. In some examples, the alteration increases the level and/or activity of a neuromodulator, e.g., the alteration is a positive regulator of function. In other examples, the alteration decreases the level and/or activity of (e.g., knocks down or knocks out) a neuromodulator, e.g., the alteration is a negative regulator of function. In yet another example, the alteration corrects a defect (e.g., a mutation causing a defect), in a gene related to a neurotransmitter pathway, e.g., a neuropeptide or receptor gene described in Table 1A, a ligand listed in Table 1B, a neuronal growth factor listed in Table 1C, or a neurome gene listed in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided.
In certain embodiments, the CRISPR system is used to edit (e.g., to add or delete a base pair) a target gene, e.g., a neuromodulating agent, e.g., described herein. In other embodiments, the CRISPR system is used to introduce a premature stop codon, e.g., thereby decreasing the expression of a target gene. In yet other embodiments, the CRISPR system is used to turn off a target gene in a reversible manner, e.g., similarly to RNA interference. In embodiments, the CRISPR system is used to direct Cas to a promoter of a neuromodulator, e.g., described herein, for example, thereby blocking an RNA polymerase sterically.
In some embodiments, a CRISPR system can be generated to edit a neuromodulator (e.g., a gene related to a neurotransmitter pathway, e.g., a neuropeptide or receptor gene described in Table 1A-10), using technology described in, e.g., U.S. Publication No. 20140068797; Cong, Science 339: 819, 2013; Tsai, Nature Biotechnol., 32:569, 2014; and U.S. Pat. Nos. 8,871,445; 8,865,406; 8,795,965; 8,771,945; and 8,697,359.
In some embodiments, the CRISPR interference (CRISPRi) technique can be used for transcriptional repression of specific genes, e.g., a gene encoding a neuromodulating agent (e.g., a neuropeptide, neurotransmitter, neuronal growth factor, neurome gene, or receptor described herein). In CRISPRi, an engineered Cas9 protein (e.g., nuclease-null dCas9, or dCas9 fusion protein, e.g., dCas9-KRAB or dCas9-SID4X fusion) can pair with a sequence specific guide RNA (sgRNA). The Cas9-g RNA complex can block RNA polymerase, thereby interfering with transcription elongation. The complex can also block transcription initiation by interfering with transcription factor binding. The CRISPRi method is specific with minimal off-target effects and is multiplexable, e.g., can simultaneously repress more than one gene (e.g., using multiple gRNAs). Also, the CRISPRi method permits reversible gene repression.
In some embodiments, CRISPR-mediated gene activation (CRISPRa) can be used for transcriptional activation, e.g., of one or more genes described herein, e.g., a neuromodulating agent (e.g., a neuropeptide, neurotransmitter, neuronal growth factor, neurome gene, or receptor described herein). In the CRISPRa technique, dCas9 fusion proteins recruit transcriptional activators. For example, dCas9 can be used to recruit polypeptides (e.g., activation domains) such as VP64 or the p65 activation domain (p65D) and used with sgRNA (e.g., a single sgRNA or multiple sgRNAs), to activate a gene or genes, e.g., endogenous gene(s). Multiple activators can be recruited by using multiple sgRNAs—this can increase activation efficiency. A variety of activation domains and single or multiple activation domains can be used. In addition to engineering dCas9 to recruit activators, sgRNAs can also be engineered to recruit activators. For example, RNA aptamers can be incorporated into a sgRNA to recruit proteins (e.g., activation domains) such as VP64. In some examples, the synergistic activation mediator (SAM) system can be used for transcriptional activation. In SAM, MS2 aptamers are added to the sgRNA. MS2 recruits the MS2 coat protein (MCP) fused to p65AD and heat shock factor 1 (HSF1).
The CRISPRi and CRISPRa techniques are described in greater detail, e.g., in Dominguez et al., Nat. Rev. Mol. Cell Biol. 17:5, 2016, incorporated herein by reference. In addition, dCas9-mediated epigenetic modifications and simultaneous activation and repression using CRISPR systems, as described in Dominguez et al., can be used to modulate a thymic function modulator or thymic function factor described herein.
Viral Vectors
The neuromodulating agent can be a viral vector (e.g., a viral vector expressing a neurome gene). Viral vectors can be used to express a transgene encoding a neurotransmitter, neuropeptide, receptor, or neuronal growth factor from Tables 1A-1C or a neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene), all with reference to accession number or Entrez Gene ID provided. A viral vector may be administered to a cell or to a subject (e.g., a human subject or animal model) to increase expression of a neurotransmitter, neuropeptide, receptor, or neuronal growth factor from Tables 1A-1C or a neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene). Viral vectors can also be used to express a neurotoxin from Table 3. A viral vector expressing a neurotoxin from Table 3 can be administered to a cell or to a subject (e.g., a human subject or animal model) to decrease neurotransmission. Viral vectors can be directly administered (e.g., injected) to a lymph node, site of infection, or site of inflammation to treat an autoimmune or inflammatory disease or condition or an infection.
Viral genomes provide a rich source of vectors that can be used for the efficient delivery of exogenous genes into a mammalian cell. Viral genomes are particularly useful vectors for gene delivery because the polynucleotides contained within such genomes are typically incorporated into the nuclear genome of a mammalian cell by generalized or specialized transduction. These processes occur as part of the natural viral replication cycle, and do not require added proteins or reagents in order to induce gene integration. Examples of viral vectors include a retrovirus (e.g., Retroviridae family viral vector), adenovirus (e.g., Ad5, Ad26, Ad34, Ad35, and Ad48), parvovirus (e.g., adeno-associated viruses), coronavirus, negative strand RNA viruses such as orthomyxovirus (e.g., influenza virus), rhabdovirus (e.g., rabies and vesicular stomatitis virus), paramyxovirus (e.g., measles and Sendai), positive strand RNA viruses, such as picornavirus and alphavirus, and double stranded DNA viruses including adenovirus, herpesvirus (e.g., Herpes Simplex virus types 1 and 2, Epstein-Barr virus, cytomegalovirus, replication deficient herpes virus), and poxvirus (e.g., vaccinia, modified vaccinia Ankara (MVA), fowlpox and canarypox). Other viruses include Norwalk virus, togavirus, flavivirus, reoviruses, papovavirus, hepadnavirus, human papilloma virus, human foamy virus, and hepatitis virus, for example. Examples of retroviruses include: avian leukosis-sarcoma, avian C-type viruses, mammalian C-type, B-type viruses, D-type viruses, oncoretroviruses, HTLV-BLV group, lentivirus, alpharetrovirus, gammaretrovirus, spumavirus (Coffin, J. M., Retroviridae: The viruses and their replication, Virology (Third Edition) Lippincott-Raven, Philadelphia, 1996). Other examples include murine leukemia viruses, murine sarcoma viruses, mouse mammary tumor virus, bovine leukemia virus, feline leukemia virus, feline sarcoma virus, avian leukemia virus, human T-cell leukemia virus, baboon endogenous virus, Gibbon ape leukemia virus, Mason Pfizer monkey virus, simian immunodeficiency virus, simian sarcoma virus, Rous sarcoma virus and lentiviruses. Other examples of vectors are described, for example, in U.S. Pat. No. 5,801,030, the teachings of which are incorporated herein by reference.
Cell-Based Therapies
A neuromodulating agent described herein can be administered to a cell in vitro (e.g., an immune cell), which can subsequently be administered to a subject (e.g., a human subject or animal model). The neuromodulating agent can be administered to the cell to effect an immune response (e.g., activation, polarization, antigen presentation, cytokine production, migration, proliferation, or differentiation) as described herein. Once the immune response is elicited, the cell can be administered to a subject (e.g., injected) to treat an autoimmune or inflammatory disease or condition or an infection. The immune cell can be locally administered (e.g., injected into a lymph node or secondary lymphoid organ, or a site of inflammation or infection).
A neuromodulating agent can also be administered to a cell in vitro (e.g., an immune cell) to alter gene expression in the cell. The neuromodulating agent can increase or decrease the expression of a gene in Table 12 in a corresponding immune cell, or the neuromodulating agent can increase or decrease the expression of a neurotransmitter, neuropeptide, receptor, or neuronal growth factor from Tables 1A-1C or a neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene). The neuromodulating agent can be a polypeptide or nucleic acid (e.g., mRNA or inhibitory RNA) described above. The neuromodulating agent can be an exogenous gene encoded by a plasmid that is introduced into the cell using standard methods (e.g., calcium phosphate precipitation, electroporation, microinjection, infection, lipofection, impalefection, laserfection, or magnetofection). The neuromodulating agent can be a viral vector (e.g., a viral vector expressing a neurome gene) that is introduced to the cell using standard transduction methods. The plasmid or vector can also contain a reporter construct (e.g., a fluorescent reporter) that can be used to confirm expression of the transgene by the immune cell. After the immune cell has been contacted with a neuromodulating agent to increase or decrease gene expression, the cell can be administered to a subject (e.g., injected) to treat an autoimmune or inflammatory disease or condition or an infection. The immune cell can be locally administered (e.g., injected into a lymph node or secondary lymphoid organ, or a site of inflammation or infection).
The cell can be administered to a subject immediately after being contacted with a neuromodulating agent (e.g., within 5, 10, 15, 30, 45, or 60 minutes of being contacted with a neuromodulating agent), or 6 hours, 12 hours, 24 hours, 2 days, 3, days, 4 days, 5, days, 6 days, 7 days or more after being contacted with a neuromodulating agent. The method can include an additional step of evaluating the immune cell for an immune cell activity (e.g., activation, polarization, antigen presentation, cytokine production, migration, proliferation, or differentiation) or modulation of gene expression after contact with a neuromodulating agent and before administration to a subject.
Screening for New Agents
The invention also features a method of screening for an agent for the treatment of an inflammatory or autoimmune disease or an infection. The method includes (a) providing a plurality of test agents, (b) evaluating the plurality of test agents for neuromodulating activity, and (c) selecting a test agent of the plurality as an anti-inflammatory, anti-autoimmune, anti-infection agent if the test agent exhibits neuromodulating activity. The evaluation method can include introducing one or more test agents into a co-culture system containing at least one neuronal cell and at least one non-neuronal cell.
In certain embodiments, evaluating an agent for neuromodulating activity includes one or more of evaluating the agent for: ability to inhibit or potentiate a beta adrenergic pathway, ability to inhibit or potentiate a cholinergic pathway, ability to inhibit or potentiate a dopaminergic pathway, ability to inhibit or potentiate a serotonin pathway, ability of the agent to increase or decrease neurogenesis; ability to potentiate or inhibit the transmission of a nerve impulse; ability of the agent to increase or decrease neurome gene expression; ability of the agent to increase neurite (e.g., axon or dendrite) outgrowth; ability to increase or decrease synapse formation or maintenance; ability to increase or decrease neuropeptide signaling; or ability to increase or decrease innervation of a tissue. The method can include correlating the neuromodulating effect of an agent with a predicted effect of the agent on a mammal, e.g., a human, e.g., by providing (e.g., to the government, a health care provider, insurance company or patient) informational, marketing or instructional material, e.g., print material or computer readable material (e.g., a label, patient record or email), related to the agent or its use, identifying the agent as a possible or predicted treatment in a mammal, e.g., a human. The method can include identifying the agent as a treatment for, or lead compound for treatment of infectious disease or an inflammatory or autoimmune condition, e.g., a condition described herein. The identification can be in the form of informational, marketing or instructional material. In one embodiment, the methods include correlating a value for neuromodulation activity with ability to treat an infectious disease or an inflammatory or autoimmune condition described herein, e.g., generating a dataset of the correlation.
Evaluating the effect of the agent on neuromodulation can include administering the agent in-vivo to an experimental mammal, or in-vitro or ex-vivo to a nerve or nervous tissue of an animal and evaluating the effect of the agent on the mammal, nerve or nervous tissue. In some embodiments, the evaluation includes entering a value for the evaluation, e.g., into a database or other record. In some embodiments, the subject is an experimental animal, e.g., a wild-type or a transgenic experimental animal.
In some embodiments, the identifying step includes: (a) contacting the agent with a cell or tissue or non-human animal whose genome includes an exogenous nucleic acid that includes a regulatory region of a neuroactive protein, operably linked to a nucleotide sequence encoding a reporter polypeptide (e.g., a light based, e.g., a colorimeteric (e.g., LacZ) or flourescently detectable label, e.g., a fluorescent reporter polypeptide, e.g., GFP, EGFP, BFP, RFP); (b) evaluating the ability of a test agent to modulate the expression of the reporter polypeptide in the cell, tissue or non-human animal; and (c) selecting a test agent that modulates the expression of the reporter polypeptide as an agent that is useful in the treatment of an inflammatory or autoimmune condition or infection described herein. In one embodiment, the cell or tissue is a nerve cell or tissue. In another embodiment, the non-human animal is a transgenic animal, e.g., a transgenic rodent, e.g., a mouse, rat or guinea pig, harboring the nucleic acid.
The test agents can be, e.g., nucleic acids (e.g., antisense RNA, ribozymes, modified mRNAs encoding an agent protein), polypeptides (antibodies or antigen-binding fragment thereof), peptide fragments, peptidomimetics, or small molecules (e.g., a small organic molecule with a molecular weight of less than 2000 daltons). In another embodiment, the test agent is a member of a combinatorial library, e.g., a peptide, antibody or organic combinatorial library, or a natural product library. In some embodiments, a plurality of test agents, e.g., library members, is tested. The test agents of the plurality, e.g., library, may share structural or functional characteristics. The test agent can also be a crude or semi-purified extract, e.g., a botanical extract such as a plant extract, or algal extract.
In one embodiment, the method includes two evaluating steps, e.g., the method includes a first step of evaluating the test agent in a first system, e.g., an in-vitro or cell-based or tissue system, and a second step of evaluating the test agent in a second system, e.g., a second cell or tissue system or in a non-human experimental animal (e.g., a rodent, a pig, a dog, a non-human primate). In other embodiments, the methods include two evaluating steps in the same type of system, e.g., the agent is re-evaluated in a non-human animal after a first evaluation in the same or a different non-human animal. The two evaluations can be separated by any length of time, e.g., days, weeks, months or years.
In some embodiments, the plurality of test agents are agents that do not cross the blood brain barrier. In some embodiments, the plurality of test agents is evaluated for ability to cross the blood brain barrier.
II. Blood Brain Barrier Permeability
In some embodiments, the neuromodulating agents for use in the present invention are agents that are not capable of crossing, or that do not cross, the blood brain barrier (BBB) of a mammalian subject. The BBB is a highly selective semipermeable membrane barrier that separates the circulating blood from the brain extracellular fluid (e.g., cerebrospinal fluid) in the central nervous system (CNS). The BBB is made up of high-density endothelial cells, which are connected by tight junctions. These cells prevent most molecular compounds in the bloodstream (e.g., large molecules and hydrophilic molecules) from entering the brain. Water, some gases (e.g., oxygen and carbon dioxide), and lipid-soluble molecules (e.g., hydrophobic molecules, such as steroid hormones) can cross the BBB by passive diffusion. Molecules that are needed for neural function, such as glucose and amino acids, are actively transported across the BBB.
A number of approaches can be used to render an agent BBB impermeable. These methods include modifications to increase an agent's size, polarity, or flexibility or reduce its lipophilicity, targeting approaches to direct an agent to another part of the body and away from the brain, and packaging approaches to deliver an agent in a form that does not freely diffuse across the BBB. These approaches can be used to render a BBB permeable neuromodulating agent impermeable, and they can also be used to improve the properties (e.g., cell-specific targeting) of a neuromodulating agent that does not cross the BBB. The methods that can be used to render an agent BBB impermeable are discussed in greater detail herein below.
Formulation of BBB-Permeable Agents for Enhanced Cell Targeting
One approach that can be used to render a neuromodulating agent BBB impermeable is to conjugate the agent to a targeting moiety that directs it somewhere other than the brain. The targeting moiety can be an antibody for a receptor expressed by the target cell (e.g., N-Acetylgalactosamine for liver transport; DGCR2, GBF1, GPR44 or SerpinB10 for pancreas transport; Secretoglobin, family 1A, member 1 for lung transport). The targeting moiety can also be a ligand of any receptor or other molecular identifier expressed on the target cell in the periphery. These targeting moieties can direct the neuromodulating agent of interest to its corresponding target cell, and can also prevent BBB crossing by directing the agent away from the BBB and increasing the size of the neuromodulating agent via conjugation of the targeting moiety.
Neuromodulating agents can also be rendered BBB impermeable through formulation in a particulate delivery system (e.g., a nanoparticle, liposome, or microparticle), such that the agent is not freely diffusible in blood and cannot cross the BBB. The particulate formulation used can be chosen based on the desired localization of the neuromodulating agent (e.g., a lymph node, lymphoid organ, or site of inflammation), as particles of different sizes accumulate in different locations. For example, nanoparticles with a diameter of 45 nm or less enter the lymph node, while 100 nm nanoparticles exhibit poor lymph node trafficking. Some examples of the link between particle size and localization in vivo are described in Reddy et al., J Controlled Release 112:26 2006, and Reddy et al., Nature Biotechnology 25:1159 2007.
Neuromodulating agents can be tested after the addition of a targeting moiety or after formulation in a particulate delivery system to determine whether or not they cross the BBB. Models for assessing BBB permeability include in vitro models (e.g., monolayer models, co-culture models, dynamic models, multi-fluidic models, isolated brain microvessels), in vivo models, and computational models as described in He et al., Stroke 45:2514 2014; Bickel, NeuroRx 2:15 2005; and Wang et al., Int J Pharm 288:349 2005. A neuromodulating agent that exhibits BBB impermeability can be used in the methods described herein.
Modification of Existing Compounds to Render them BBB Impermeable
There are multiple parameters that have been empirically derived in the field of medicinal chemistry to predict whether a compound will cross the BBB. The most common numeric value for describing permeability across the BBB is the log BB, defined as the logarithmic ratio of the concentration of a compound in the brain and in the blood. Empirical rules of thumb have been developed to predict BBB permeability, including rules regarding molecular size, polar surface area, sum of oxygen and nitrogen atoms, lipophilicity (e.g., partition coefficient between apolar solvent and water), “lipoaffinity”, molecular flexibility, and number of rotable bonds (summarized in Muehlbacher et al., J Comput Aided Mol Des. 25: 1095 2011; and Geldenhuys et al., Ther Deliv. 6: 961 2015). Some preferred limits on various parameters for BBB permeability are listed in Table 1 of Ghose et al., ACS Chem Neurosci. 3: 50 2012, which is incorporated herein by reference. Based on the parameters shown in the table, one of skill in the art could modify an existing neuromodulating agent to render it BBB impermeable.
One method of modifying a neuromodulating agent to prevent BBB crossing is to add a molecular adduct that does not affect the target binding specificity, kinetics, or theromodynamics of the agent. Molecular adducts that can be used to render an agent BBB impermeable include polyethylene glycol (PEG), a carbohydrate monomer or polymer, a dendrimer, a polypeptide, a charged ion, a hydrophilic group, deuterium, and fluorine. Neuromodulating agents can be tested after the addition of one or more molecular adducts or after any other properties are altered to determine whether or not they cross the BBB. Models for assessing BBB permeability include in vitro models (e.g., monolayer models, co-culture models, dynamic models, multi-fluidic models, isolated brain microvessels), in vivo models, and computational models as described in He et al., Stroke 45:2514 2014; Bickel, NeuroRx 2:15 2005; and Wang et al., Int J Pharm 288:349 2005. A neuromodulating agent that exhibits BBB impermeability can be used in the methods described herein.
Screening for or Development of BBB Impermeable Agents
Another option for developing BBB impermeable agents is to find or develop new agents that do not cross the BBB. One method for finding new BBB impermeable agents is to screen for compounds that are BBB impermeable. Compound screening can be performed using in vitro models (e.g., monolayer models, co-culture models, dynamic models, multi-fluidic models, isolated brain microvessels), in vivo models, and computational models, as described in He et al., Stroke 45:2514 2014; Bickel, NeuroRx 2:15 2005; Wang et al., Int J Pharm 288:349 2005, and Czupalla et al., Methods Mol Biol 1135:415 2014. For example, the ability of a molecule to cross the blood brain barrier can be determined in vitro using a transwell BBB assay in which microvascular endothelial cells and pericytes are co-cultured separated by a thin macroporous membrane, see e.g., Naik et al., J Pharm Sci 101:1337 2012 and Hanada et al., Int J Mol Sci 15:1812 2014; or in vivo by tracking the brain uptake of the target molecule by histology or radio-detection. Compounds would be deemed appropriate for use as neuromodulating agents in the methods described herein if they do not display BBB permeability in the aforementioned models.
III. Modulation of Immune Cells
The methods described herein can be used to modulate an immune response in a subject or cell by administering to a subject or cell a neuromodulating agent in a dose (e.g., an effective amount) and for a time sufficient to modulate the immune response. These methods can be used to treat a subject in need of modulating an immune response, e.g., a subject with an inflammatory condition, an autoimmune disease or condition, or a chronic infection. One way to modulate an immune response is to modulate an immune cell activity. This modulation can occur in vivo (e.g., in a human subject or animal model) or in vitro (e.g., in acutely isolated or cultured cells, such as human cells from a patient, repository, or cell line, or rodent cells). The types of cells that can be modulated include T cells (e.g., peripheral T cells, cytotoxic T cells/CD8+ T cells, T helper cells/CD4+ T cells, memory T cells, regulatory T cells/Tregs, natural killer T cells/NKTs, mucosal associated invariant T cells, and gamma delta T cells), B cells (e.g., memory B cells, plasmablasts, plasma cells, follicular B cells/B-2 cells, marginal zone B cells, B-1 cells, regulatory B cells/Bregs), dendritic cells (e.g., myeloid DCs/conventional DCs, plasmacytoid DCs, or follicular DCs), granulocytes (e.g., eosinophils, mast cells, neutrophils, and basophils), monocytes, macrophages (e.g., peripheral macrophages or tissue resident macrophages), myeloid-derived suppressor cells, natural killer (NK) cells, innate lymphoid cells, thymocytes, and megakaryocytes.
The immune cell activities that can be modulated by administering to a subject or contacting a cell with an effective amount of a neuromodulating agent described herein include activation (e.g., macrophage, T cell, NK cell, B cell, dendritic cell, neutrophil, eosinophil, or basophil activation), phagocytosis (e.g., macrophage, neutrophil, monocyte, mast cell, B cell, eosinophil, or dendritic cell phagocytosis), antibody-dependent cellular phagocytosis (e.g., ADCP by monocytes, macrophages, neutrophils, or dendritic cells), antibody-dependent cellular cytotoxicity (e.g., ADCC by NK cells, monocytes, macrophages, neutrophils, eosinophils, dendritic cells, or T cells), polarization (e.g., macrophage polarization toward an M1 or M2 phenotype or T cell polarization), proliferation (e.g., proliferation of B cells, T cells, monocytes, macrophages, dendritic cells, NK cells, mast cells, neutrophils, eosinophils, or basophils), lymph node homing (e.g., lymph node homing of T cells, B cells, dendritic cells, or macrophages), lymph node egress (e.g., lymph node egress of T cells, B cells, dendritic cells, or macrophages), recruitment (e.g., recruitment of B cells, T cells, monocytes, macrophages, dendritic cells, NK cells, mast cells, neutrophils, eosinophils, or basophils), migration (e.g., migration of B cells, T cells, monocytes, macrophages, dendritic cells, NK cells, mast cells, neutrophils, eosinophils, or basophils), differentiation (e.g., regulatory T cell differentiation), immune cell cytokine production, antigen presentation (e.g., dendritic cell, macrophage, and B cell antigen presentation), maturation (e.g., dendritic cell maturation), and degranulation (e.g., mast cell, NK cell, cytotoxic T cell, neutrophil, eosinophil, or basophil degranulation). Innervation of lymph nodes or lymphoid organs, development of high endothelial venules (HEVs), and development of ectopic or tertiary lymphoid organs (TLOs) can also be modulated using the methods described herein. Modulation can increase or decrease these activities, depending on the neuromodulating agent used to contact the cell or treat a subject.
In some embodiments, an effective amount of a neuromodulating agent is an amount sufficient to modulate (e.g., increase or decrease) one or more (e.g., 2 or more, 3 or more, 4 or more) of the following immune cell activities in the subject or cell: T cell polarization; T cell activation; dendritic cell activation; neutrophil activation; eosinophil activation; basophil activation; T cell proliferation; B cell proliferation; T cell proliferation; monocyte proliferation; macrophage proliferation; dendritic cell proliferation; NK cell proliferation; mast cell proliferation; neutrophil proliferation; eosinophil proliferation; basophil proliferation; cytotoxic T cell activation; circulating monocytes; peripheral blood hematopoietic stem cells; macrophage polarization; macrophage phagocytosis; macrophage ADCP, neutrophil phagocytosis; monocyte phagocytosis; mast cell phagocytosis; B cell phagocytosis; eosinophil phagocytosis; dendritic cell phagocytosis; macrophage activation; antigen presentation (e.g., dendritic cell, macrophage, and B cell antigen presentation); antigen presenting cell migration (e.g., dendritic cell, macrophage, and B cell migration); lymph node immune cell homing and cell egress (e.g., lymph node homing and egress of T cells, B cells, dendritic cells, or macrophages); NK cell activation; NK cell ADCC, mast cell degranulation; NK cell degranulation; cytotoxic T cell degranulation; neutrophil degranulation; eosinophil degranulation; basophil degranulation; neutrophil recruitment; eosinophil recruitment; NKT cell activation; B cell activation; regulatory T cell differentiation; dendritic cell maturation; development of high endothelial venules (HEVs); development of ectopic or tertiary lymphoid organs (TLOs); or lymph node or secondary lymphoid organ innervation. In certain embodiments, the immune response (e.g., an immune cell activity listed herein) is increased or decreased in the subject or cell at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80%, 100%, 150%, 200%, 300%, 400%, 500% or more, compared to before the administration. In certain embodiments, the immune response is increased or decreased in the subject or cell between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%, between 50-200%, between 100%-500%.
After a neuromodulating agent is administered to treat a patient or contact a cell, a readout can be used to assess the effect on immune cell activity. Immune cell activity can be assessed by measuring a cytokine or marker associated with a particular immune cell type, as listed in Table 9 (e.g., performing an assay listed in Table 9 for the cytokine or marker). In certain embodiments, the parameter is increased or decreased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80%, 100%, 150%, 200%, 300%, 400%, 500% or more, compared to before the administration. In certain embodiments, the parameter is increased or decreased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%, between 50-200%, between 100%-500%. A neuromodulating agent can be administered at a dose (e.g., an effective amount) and for a time sufficient to modulate an immune cell activity described herein below.
After a neuromodulating agent is administered to treat a patient or contact a cell, a readout can be used to assess the effect on immune cell migration. Immune cell migration can be assessed by measuring the number of immune cells in a location of interest (e.g., a lymph node or secondary lymphoid organ, or a site of inflammation). Immune cell migration can also be assessed by measuring a chemokine, receptor, or marker associated with immune cell migration, as listed in Tables 10 and 11. In certain embodiments, the parameter is increased or decreased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80%, 100%, 150%, 200%, 300%, 400%, 500% or more, compared to before the administration. In certain embodiments, the parameter is increased or decreased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%, between 50-200%, between 100%-500%. A neuromodulating agent can be administered at a dose (e.g., an effective amount) and for a time sufficient to modulate an immune cell migration as described herein below.
A neuromodulating agent described herein can affect immune cell migration. Immune cell migration between peripheral tissues, the blood, and the lymphatic system as well as lymphoid organs is essential for the orchestration of productive innate and adaptive immune responses. Immune cell migration is largely regulated by trafficking molecules including integrins, immunoglobulin cell-adhesion molecules (IgSF CAMs), cadherins, selectins, and a family of small cytokines called chemokines (Table 10). Cell adhesion molecules and chemokines regulate immune cell migration by both inducing extravasation from the circulation into peripheral tissues and acting as guidance cues within peripheral tissues themselves. For extravasation to occur, chemokines must act in concert with multiple trafficking molecules including C-type lectins (L-, P-, and E-selectin), multiple integrins, and cell adhesion molecules (ICAM-1, VCAM-1 and MAdCAM-1) to enable a multi-step cascade of immune cell capturing, rolling, arrest, and transmigration via the blood endothelial barrier (Table 11). Some trafficking molecules are constitutively expressed and manage the migration of immune cells during homeostasis, while others are specifically upregulated by inflammatory processes such as infection and autoimmunity.
The expression of trafficking molecules important for extravasation is mainly regulated on specialized blood vessels called high endothelial venules (HEVs), which are the entry portals from the circulation into the periphery and are usually present in secondary lymphoid organs (SLOs) and chronically inflamed tissue. Chronically inflamed tissues often develop lymphoid-like structures called ectopic or tertiary lymphoid organs (TLOs) that contain structures resembling SLOs including HEVs, lymphoid stromal cells, and confined compartments of T and B lymphocytes. As they can act as major gateways for immune cell migration into peripheral tissues, TLOs have been shown to be important in the pathogenesis of autoimmune disorders.
Once within peripheral tissues, four modes of immune cell migration have been observed: 1) chemokinesis: migration driven by soluble chemokines, without concentration gradients to provide directional bias, 2) haptokinesis: migration along surfaces presenting immobilized ligands such as chemokines or integrins, without concentration gradients to provide directional bias, 3) chemotaxis: directional migration driven by concentration gradients of soluble chemokines, and 4) haptotaxis: directional migration along surfaces presenting gradients of immobilized ligands such as chemokines or integrins. The response of immune cells to trafficking molecules present on the endothelium depends on the composition, expression, and/or functional activity of their cognate receptors, which in turn depends on activation state and immune cell subtype.
Innate immune cells generally migrate toward inflammation-induced trafficking molecules in the periphery. In contrast, naïve T and B cells constantly re-circulate between the blood and secondary lymphoid organs to screen for their cognate antigen presented by activated dendritic cells (DCs) or fibroblastic reticular cells (FRCs), respectively. If activated by recognition of their cognate antigen and appropriate co-stimulation within SLOs, both cell types undergo a series of complex maturation steps, including differentiation and proliferation, ultimately leading to effector and memory immune cell phenotypes. To reach their peripheral target sites, certain effector and memory T and B cell subsets egress from SLOs to the blood circulation via efferent lymphatics. In order to do so, they migrate toward a Sphingosine-1-phosphate (S1P) gradient sensed using their Sphingosine-1-phosphate receptor 1 (S1P1 or S1PR1). For successful egress into efferent lymphatics, immune cells need to overcome SLO retention signals through the CCR7/CCL21 axis or through CD69-mediated downregulation of S1P1.
Finally, certain immune cell subsets, for example mature dendritic cells (DCs) and memory T cells, migrate from peripheral tissues into SLOs via afferent lymphatics. To exit from peripheral tissues and enter afferent lymphatics, immune cells again largely depend on the CCR7/CCL21 and S1P1/S1P axis. Specifically, immune cells need to overcome retention signals delivered via the CCR7/CCL21 axis, and migrate toward an S1P gradient established by the lymphatic endothelial cells using S1P1. The selective action of trafficking molecules on distinct immune cell subsets as well as the distinct spatial and temporal expression patterns of both the ligands and receptors are crucial for the fine-tuning of immune responses during homeostasis and disease.
Aberrant immune cell migration is observed in multiple immune-related pathologies. Immune cell adhesion deficiencies, caused by molecular defects in integrin expression, fucosylation of selectin ligands, or inside-out activation of integrins on leukocytes and platelets, lead to impaired immune cell migration into peripheral tissues. This results in leukocytosis and in increased susceptibility to recurrent bacterial and fungal infections, which can be difficult to treat and potentially life-threatening. Alternatively, exaggerated migration of specific immune cell subsets into specific peripheral tissues is associated with a multitude of pathologies. For example, excessive neutrophil accumulation in peripheral tissues contributes to the development of ischemia-reperfusion injury, such as that observed during acute myocardial infarction, stroke, shock and acute respiratory distress syndrome. Excessive Th1 inflammation characterized by tissue infiltration of interferon-gamma secreting effector T cells and activated macrophages is associated with atherosclerosis, allograft rejection, hepatitis, and multiple autoimmune diseases including multiple sclerosis, rheumatoid arthritis, psoriasis, Crohn's disease, type 1 diabetes and lupus erythematodes. Excessive Th2 inflammation characterized by tissue infiltration of IL-4, IL-5, and IL-13 secreting Th2 cells, eosinophils and mast cells is associated with asthma, food allergies and atopic dermatitis.
Immune Effects
A variety of in vitro and in vivo assays can be used to determine how a neuromodulating agent affects an immune cell activity. The effect of a neuromodulating agent on T cell polarization in a subject can be assessed by evaluation of cell surface markers on T cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and T cells from the sample evaluated for one or more (e.g., 2, 3, or 4 or more) Th1-specific markers: T-bet, IL-12R, STAT4, or chemokine receptors CCR5, CXCR6, and CXCR3; or Th2-specific markers: CCR3, CXCR4, or IL-4Rα. T cell polarization can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to T cells in vitro (e.g., T cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate T cell polarization. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cellular markers. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on T cell activation in a subject can be assessed by evaluation of cellular markers on T cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and T cells from the sample evaluated for one or more (e.g., 2, 3, 4 or more) activation markers: CD25, CD71, CD26, CD27, CD28, CD30, CD154, CD40L, CD134, CD69, CD62L or CD44. T cell activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to T cells in vitro (e.g., T cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate T cell activation. Similar approaches can be used to assess the effect of a neuromodulating agent on activation of other immune cells, such as eosinophils (markers: CD35, CD11b, CD66, CD69 and CD81), dendritic cells (makers: IL-8, MHC class II, CD40, CD80, CD83, and CD86), basophils (CD63, CD13, CD4, and CD203c), and neutrophils (CD11 b, CD35, CD66b and CD63). These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cellular markers. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on immune cell activation can also be assessed through measurement of secreted cytokines and chemokines. An activated immune cell (e.g., T cell, B cell, macrophage, monocyte, dendritic cell, eosinophil, basophil, mast cell, NK cell, or neutrophil) can produce pro-inflammatory cytokines and chemokines (e.g., IL-1β, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-18, TNFα, and IFN-γ). Activation can be assessed by measuring cytokine levels in a blood sample, lymph node biopsy, or tissue sample from a human subject or animal model, with higher levels of pro-inflammatory cytokines following treatment with a neuromodulating agent indicating increased activation, and lower levels indicating decreased activation. Activation can also be assessed in vitro by measuring cytokines secreted into the media by cultured cells. Cytokines can be measured using ELISA, western blot analysis, and other approaches for quantifying secreted proteins. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on T cell proliferation in a subject can be assessed by evaluation of markers of proliferation in T cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and T cells from the sample evaluated for Ki67 marker expression. T cell proliferation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to T cells in vitro (e.g., T cells obtained from a subject, animal model, repository, or commercial source) and measuring Ki67 to evaluate T cell proliferation. Assessing whether a neuromodulating agent induces T cell proliferation can also be performed by in vivo (e.g., in a human subject or animal model) by collecting blood samples before and after neuromodulating agent administration and comparing T cell numbers, and in vitro by quantifying T cell numbers before and after contacting T cells with a neuromodulating agent. These approaches can also be used to measure the effect of a neuromodulating agent on proliferation of any immune cell (e.g., B cells, T cells, macrophages, monocytes, dendritic cells, NK cells, mast cells, eosinophils, basophils, and neutrophils). Ki67 can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of nuclear markers. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on cytotoxic T cell activation in a subject can be assessed by evaluation of T cell granule markers in T cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and T cells from the sample evaluated for granzyme or perforin expression. Cytotoxic T cell activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to cytotoxic T cells in vitro (e.g., cytotoxic T cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate T cell proliferation. These markers can be detected in the media from cytotoxic T cell cultures. Techniques including ELISA, western blot analysis can be used to detect granzyme and perforin in conditioned media, flow cytometry, immunohistochemistry, in situ hybridization, and other assays can detect intracellular granzyme and perforin and their synthesis. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on circulating monocytes in a subject can be assessed by evaluation of cell surface markers on primary blood mononuclear cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and monocytes from the sample evaluated for CD14 and/or CD16 expression. Circulating monocytes can also be assessed using the same methods in an in vivo animal model. This assay can be performed by taking a blood sample before treatment with a neuromodulating agent and comparing it to a blood sample taken after treatment. CD14 and CD16 can be detected using flow cytometry, immunohistochemistry, western blot analysis, or any other technique that can measure cell surface protein levels. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect. This assay can be used to detect the number of monocytes in the bloodstream or to determine whether monocytes have adopted a CD14+/CD16+ phenotype, which indicates a pro-inflammatory function.
The effect of a neuromodulating agent on peripheral blood hematopoietic stem cells in a subject can be assessed by evaluation of cell surface markers on primary blood mononuclear cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and stem cells from the sample evaluated for one or more (2, 3 or 4 or more) specific markers: CD34, c-kit, Sca-1, or Thy1.1. Peripheral blood hematopoietic stem cells can also be assessed using the same methods in an in vivo animal model. This assay can be performed by taking a blood sample before treatment with a neuromodulating agent and comparing it to a blood sample taken after treatment. The aforementioned markers can be detected using flow cytometry, immunohistochemistry, western blot analysis, or any other technique that can measure cell surface protein levels. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect. This assay can be used to detect the number of stem cells mobilized into the bloodstream or to determine whether treatment induces differentiation into a particular hematopoietic lineage (e.g., decreased CD34 and increased GPA indicates differentiation into red blood cells, decreased CD34 and increased CD14 indicates differentiation into monocytes, decreased CD34 and increased CD11 b or CD68 indicates differentiation into macrophages, decreased CD34 and increased CD42b indicates differentiation into platelets, decreased CD34 and increased CD3 indicates differentiation into T cells, decreased CD34 and increased CD19 indicates differentiation into B cells, decreased CD34 and increased CD25 or CD69 indicates differentiation into activated T cells, decreased CD34 and increased CD1c, CD83, CD141, CD209, or MHC II indicates differentiation into dendritic cells, decreased CD34 and increased CD56 indicates differentiation into NK cells, decreased CD34 and increased CD15 indicates differentiation into neutrophils, decreased CD34 and increased 2D7 antigen, CD123, or CD203c indicates differentiation into basophils, and decreased CD34 and increased CD193, EMR1, or Siglec-8 indicates differentiation into eosinophils.
The effect of a neuromodulating agent on macrophage polarization in a subject can be assessed by evaluation of cellular markers in macrophages cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and macrophages from the sample evaluated for one of more (2, 3 or 4 or more) specific markers. Markers for M1 polarization include IL-12, TNF, IL-1β, IL-6, IL-23, MARCO, MHC-II, CD86, iNOS, CXCL9, and CXCL10. Markers for M2 polarized macrophages include IL-10, IL1-RA, TGFβ, MR, CD163, DC-SIGN, Dectin-1, HO-1, arginase (Arg-1), CCL17, CCL22 and CCL24. Macrophage polarization can also be assessed using the same methods in an in vivo animal model. This assay can also be performed on cultured macrophages obtained from a subject, an animal model, repository, or commercial source to determine how contacting a macrophage with a neuromodulating agent affects polarization. The aforementioned markers can be evaluated by comparing measurements obtained before and after administration of a neuromodulating agent to a subject, animal model, or cultured cell. Surface markers or intracellular proteins (e.g., MHC-11, CD86, iNOS, CD163, Dectin-1, HO-1, Arg-1, etc.) can be measured using flow cytometry, immunohistochemistry, in situ hybridization, or western blot analysis, and secreted proteins (e.g., IL-12, TNF, IL-1β, IL-10, TGFβ, IL1-RA, chemokines CXC8, CXC9, CCL17, CCL22, and CCL24, etc.) can be measured using the same methods or by ELISA or western blot analysis of culture media or blood samples. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on macrophage phagocytosis in a subject can be assessed by culturing macrophages obtained from the subject with fluorescent beads. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and macrophages from the sample evaluated for engulfment of fluorescent beads. This assay can also be performed on cultured macrophages obtained from an animal model, repository, or commercial source to determine how contacting a macrophage with a neuromodulating agent affects phagocytosis. The same phagocytosis assay can be used to evaluate the effect of a neuromodulating agent on phagocytosis in other immune cells (e.g., neutrophils, monocytes, mast cells, B cells, eosinophils, or dendritic cells). Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect on phagocytosis.
In some embodiments, phagocytosis is ADCP. ADCP can be assessed using similar methods to those described above by incubating immune cells (e.g., macrophages, neutrophils, monocytes, mast cells, B cells, eosinophils, or dendritic cells) isolated from a blood sample, lymph node biopsy, or tissue sample with fluorescent beads coated with IgG antibodies. In some embodiments, immune cells are incubated with a target cell line that has been pre-coated with antibodies to a surface antigen expressed by the target cell line. ADCP can be evaluated by measuring fluorescence inside the immune cell or quantifying the number of beads or cells engulfed. This assay can also be performed on cultured immune cells obtained from an animal model, repository, or commercial source to determine how contacting an immune cell with a neuromodulating agent affects ADCP. The ability of an immune cell to perform ADCP can also be evaluated by assessing expression of certain Fc receptors (e.g., FcγRIIa, FcγRIIIa, and FcγRI). Fc receptor expression can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, or other assays that allow for measurement of cell surface markers. Comparing phagocytosis or Fc receptor expression before and after administration of a neuromodulating agent can be used to determine its effect on ACDP. In some embodiments, the neuromodulating agent increases ADCP of infectious agents. In some embodiments, the neuromodulating agent decreases macrophage ADCP of auto-antibody coated cells (e.g., in autoimmune diseases such as glomerular nephritis).
The effect of a neuromodulating agent on macrophage activation in a subject can be assessed by evaluation of cell surface markers on macrophages cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and macrophages from the sample evaluated for one or more (e.g., 1, 2, 3 or 4 or more) specific markers: F4/80, HLA molecules (e.g., MHC-II), CD80, CD68, CD11b, or CD86. Macrophage activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to macrophages in vitro (e.g., macrophages obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate macrophage activation. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. As mentioned above, macrophage activation can also be evaluated based on cytokine production (e.g., pro-inflammatory cytokine production) as measured by ELISA and western blot analysis. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on antigen presentation in a subject can be assessed by evaluation of cell surface markers on antigen presenting cells (e.g., dendritic cells, macrophages, and B cells) obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and antigen presenting cells (e.g., dendritic cells, macrophages, and B cells) from the sample evaluated for one or more (e.g., 2, 3 or 4 or more) specific markers: CD11c, CD11b, HLA molecules (e.g., MHC-II), CD40, B7, IL-2, CD80 or CD86. Antigen presentation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to antigen presenting cells (e.g., dendritic cells) in vitro (e.g., antigen presenting cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate antigen presentation. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on antigen presenting cell migration in a subject can be assessed by evaluation of cell surface markers on antigen presenting cells (e.g., dendritic cells, B cells, and macrophages) obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and antigen presenting cells (e.g., dendritic cells, B cells, and macrophages) from the sample evaluated for CCR7 expression. Antigen presenting cell migration can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to antigen presenting cells (e.g., dendritic cells, B cells, and macrophages) in vitro (e.g., antigen presenting cells obtained from a subject, animal model, repository, or commercial source) and measuring CCR7 to evaluate antigen presenting cell migration. CCR7 can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
The effect of a neuromodulating agent on lymph node immune cell homing and cell egress in a subject can be assessed by evaluation of cell surface markers on T or B cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and T or B cells from the sample evaluated for one or more specific markers: CCR7 or S1PR1. Lymph node immune cell homing and cell egress can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to T or B cells in vitro (e.g., T or B cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate T or B cell lymph node homing. These markers can also be used to assess lymph node homing and cell egress of dendritic cells and macrophages. CCR7 and S1PR1 can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. If using an animal model, lymph nodes or sites of inflammation can be imaged in vivo (e.g., using a mouse that expresses fluorescently labeled T or B cells) or after biopsy to determine whether T or B cell numbers change as a result of administration of a neuromodulating agent. Comparing results from before and after administration of a neuromodulating agent can be used to determine its effect.
In some embodiments, a neuromodulating agent increases homing or decreases egress of naïve T cells into or out of secondary lymphoid organs prior to antigen challenge (e.g., prior to administration of a vaccine) to generate a better antigen-specific response. In some embodiments, a neuromodulating agent decreases homing or increases egress of inflammatory immune cells (e.g., neutrophils) into or out of peripheral tissues during acute infection or injury to prevent conditions such as ischemia-reperfusion disorders. In some embodiments, a neuromodulating agent decreases homing or increases egress of effector immune subsets into or out of peripheral tissues to avoid inflammation-induced tissue damage in autoimmune diseases.
The effect of a neuromodulating agent on NK cell activation in a subject can be assessed by evaluation of cell surface markers on NK cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and NK cells from the sample evaluated for one or more (e.g., 2, 3 or 4 or more) specific markers: CD117, NKp46, CD94, CD56, CD16, KIR, CD69, HLA-DR, CD38, KLRG1, and TIA-1. NK cell activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to NK cells in vitro (e.g., NK cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate NK cell activation. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
In some embodiments, activated NK cells have increased lytic function or are cytotoxic (e.g., capable of performing ADCC). The effect of a neuromodulating agent on ADCC can be assessed by incubating immune cells capable of ADCC (e.g., NK cells, monocytes, macrophages, neutrophils, eosinophils, dendritic cells, or T cells) with a target cell line that has been pre-coated with antibodies to a surface antigen expressed by the target cell line. ADCC can be assessed by measuring the number of surviving target cells with a fluorescent viability stain or by measuring the secretion of cytolytic granules (e.g., perforin, granzymes, or other cytolytic proteins released from immune cells). Immune cells can be collected from a blood sample, lymph node biopsy, or tissue sample from a human subject or animal model treated with a neuromodulating agent. This assay can also be performed by adding a neuromodulating agent to immune cells in vitro (e.g., immune cells obtained from a subject, animal model, repository, or commercial source). The effect of a neuromodulating agent on ADCC can be determined by comparing results from before and after neuromodulating agent administration. In some embodiments, the neuromodulating agent decreases NK cell ADCC of auto-antibody coated cells (e.g., to treat autoimmune disease). In some embodiments, the neuromodulating agent increases NK cell ADCC of antibody-opsonized infectious agents.
The effect of a neuromodulating agent on mast cell degranulation in a subject can be assessed by evaluation of markers in mast cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and mast cells from the sample evaluated for one or more (e.g., 1, 2, 3 or 4 or more) specific markers: IgE, histamine, IL-4, TNFα, CD300a, tryptase, or MMP9. Mast cell degranulation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to mast cells in vitro (e.g., mast cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate mast cell degranulation. Some of these markers (e.g., histamine, TNFα, and IL-4) can be detected by measuring levels in the mast cell culture medium after mast cells are contacted with a neuromodulating agent. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration. This approach can also be used to evaluate the effect of a neuromodulating agent on degranulation by other cells, such as neutrophils (markers: CD11 b, CD13, CD18, CD45, CD15, CD66b IL-1β, IL-8, and IL-6), eosinophils (markers: major basic protein (MBP), eosinophil cationic protein (ECP), eosinophil peroxidase (EPX), eosinophil-derived neurotoxin (EDN)), basophils (markers: histamine, heparin, chondroitin, elastase, lysophospholipase, and LTD-4), NK cells (markers: LAMP-1, perforin, and granzymes), and cytotoxic T cells (markers: LAMP-1, perforin, and granzymes). Markers can be detected using flow cytometry, immunohistochemistry, ELISA, western blot analysis, or in situ hybridization.
The effect of a neuromodulating agent on neutrophil recruitment in a subject can be assessed by evaluation of cell surface markers on neutrophils obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and neutrophils from the sample evaluated for one or more (e.g., 1, 2, 3 or 4 or more) specific markers: CD11b, CD14, CD114, CD177, CD354, or CD66. To determine whether neutrophils are being recruited to a specific site (e.g., a site of inflammation), the same markers can be measured at the site of inflammation. Neutrophil recruitment can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to neutrophils in vitro (e.g., neutrophils obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate neutrophil recruitment. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The effect of a neuromodulating agent on eosinophil recruitment in a subject can be assessed by evaluation of cell surface markers on eosinophil obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and eosinophils from the sample evaluated for one or more (e.g., 1, 2, 3 or 4 or more) specific markers: CD15, IL-3R, CD38, CD106, CD294 or CD85G. To determine whether eosinophils are being recruited to a specific site (e.g., a site of inflammation), the same markers can be measured at the site of inflammation. Eosinophil recruitment can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to eosinophils in vitro (e.g., eosinophils obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate eosinophil recruitment. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The effect of a neuromodulating agent on NKT cell activation in a subject can be assessed by evaluation of cell surface markers on NKT cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and NKT cells from the sample evaluated for one or more specific markers: CD272 or CD352. Activated NKT cells produce IFN-γ, IL-4, GM-CSF, IL-2, IL-13, IL-17, IL-21 and TNFα. NKT cell activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to NKT cells in vitro (e.g., NKT cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate NKT cell activation. Cell surface markers CD272 and CD352 can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. The secreted proteins can be detected in blood samples or cell culture media using ELISA, western blot analysis, or other methods for detecting proteins in solution. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The effects of a neuromodulating agent on B cell activation in a subject can be assessed by evaluation of cell surface markers on B cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and B cells from the sample evaluated for one or more (e.g., 2, 3 or 4 or more) specific markers: CD19, CD20, CD40, CD80, CD86, CD69, IgM, IgD, IgG, IgE, or IgA. B cell activation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to B cells in vitro (e.g., B cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate B cell activation. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cell surface markers. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The effect of a neuromodulating agent on regulatory T cell differentiation in a subject can be assessed by evaluation of markers in regulatory T cells obtained from the subject. A blood sample, lymph node biopsy, or tissue sample can be collected from a subject and regulatory T cells from the sample evaluated for one or more (e.g., 1, 2, 3, 4 or more) specific markers: CD4, CD25, or FoxP3. Regulatory T cell differentiation can also be assessed using the same methods in an in vivo animal model. This assay can also be performed by adding a neuromodulating agent to regulatory T cells in vitro (e.g., regulatory T cells obtained from a subject, animal model, repository, or commercial source) and measuring the aforementioned markers to evaluate regulatory T cell differentiation. These markers can be assessed using flow cytometry, immunohistochemistry, in situ hybridization, and other assays that allow for measurement of cellular markers. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The effect of a neuromodulating agent on innervation of a lymph node or secondary lymphoid organ can be assessed by evaluation of neuronal markers in a lymph node or secondary lymphoid organ biopsy sample obtained from a human subject or animal model. A biopsy can be collected from the subject and evaluated for one or more (e.g., 1, 2, 3, 4, or 4 or more) neuronal markers selected from: Neurofilament, synapsin, synaptotagmin, or neuron specific enolase. Lymph node innervation can also be assessed using electrophysiological approaches (e.g., recording neuronal activity in a lymph node or secondary lymphoid organ in a human subject or animal model). The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
The neuromodulating agent can also reduce the number of nerve fibers in the affected tissue or reduce the activity of peripheral nerve fibers in the affected tissue. For example, the method includes administering to the subject (e.g., a human subject or animal model) a neuromodulating agent in an amount and for a time sufficient to reduce the number of nerve fibers in the affected tissue or reduce the activity of peripheral nerve fibers in the affected tissue. The affected tissue can be a lymph node, a lymphoid organ, or the bone marrow niche. The number of nerve fibers in the affected tissue or the activity of peripheral nerve fibers in the affected tissue can be decreased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more, compared to before the administration. The number of nerve fibers in the affected tissue or the activity of peripheral nerve fibers in the affected tissue can be decreased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%.
The neuromodulating agent can also increase the number of nerve fibers in the affected tissue or increase the activity of peripheral nerve fibers in the affected tissue. For example, the method includes administering to the subject (e.g., a human subject or animal model) a neuromodulating agent in an amount and for a time sufficient to increase the number of nerve fibers in the affected tissue or increase the activity of peripheral nerve fibers in the affected tissue. The affected tissue can be a lymph node, a lymphoid organ, or the bone marrow niche. The number of nerve fibers in the affected tissue or the activity of peripheral nerve fibers in the affected tissue can be increased in the subject at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80% or more, compared to before the administration. The number of nerve fibers in the affected tissue or the activity of peripheral nerve fibers in the affected tissue can be increased in the subject between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%.
The nerve fibers that are modulated can be part of the peripheral nervous system, e.g., a somatic nerve, an autonomic nerve, a sensory nerve, a cranial nerve, an optic nerve, an olfactory nerve, a sympathetic nerve, a parasympathetic nerve, a chemoreceptor, a photoreceptor, a mechanoreceptor, a thermoreceptor, a nociceptor, an efferent nerve fiber, or an afferent nerve fiber.
The effect of a neuromodulating agent on immune cell cytokine production can be assessed by evaluation of cellular markers in an immune cell sample obtained from a human subject or animal model. A blood sample, lymph node biopsy, or tissue sample can be collected for the subject and evaluated for one or more (e.g., 1, 2, 3, 4, or 4 or more) cytokine markers selected from: pro-inflammatory cytokines (e.g., IL-1β, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, IL-18, TNFα, IFNγ, GMCSF), pro-survival cytokines (e.g., IL-2, IL-4, IL-6, IL-7, and IL-15) and anti-inflammatory cytokines (e.g., IL-4, IL-10, IL-11, IL-13, IFNα, and TGFβ). Some cytokines can function as both pro- and anti-inflammatory cytokines depending on context or indication (e.g., IL-4 is often categorized as an anti-inflammatory cytokine, but plays a pro-inflammatory role in mounting an allergic or anti-parasitic immune response). Cytokines can be also detected in the culture media of immune cells contacted with a neuromodulating agent. Cytokines can be detected using ELISA, western blot analysis, or other methods for detecting protein levels in solution. The effect of a neuromodulating agent can be determined by comparing results from before and after neuromodulating agent administration.
In some embodiments, a neuromodulating agent decreases or prevents the development of ectopic or tertiary lymphoid organs (TLOs) to decrease local inflammation in autoimmune diseases. TLOs are highly similar to SLOs and exhibit T and B cell compartmentalization, APCs such as DCs and follicular DCs, stromal cells, and a highly organized vascular system of high endothelial venules. In some embodiments, a neuromodulating agent decreases or prevents the development of high endothelial venules (HEVs) within tertiary lymphoid organs to decrease local inflammation in autoimmune diseases. HEVs can be detected using the monoclonal antibody MECA-79.
In some embodiments, a neuromodulating agent modulates dendritic cell maturation (e.g., activation). Dendritic cell maturation can be increased to promote their migration from peripheral tissues into secondary lymphoid organs to improve T cell activation in the draining lymph node (e.g., to increase vaccine efficacy, or to improve immune defense against infectious agents). Dendritic cell maturation can be decreased to decrease their migration from peripheral tissues into secondary lymphoid organs to inhibit T cell activation in the draining lymph node (e.g., to improve outcomes in organ transplantation or to reduce the severity of or treat autoimmune diseases).
Table 9 lists additional markers and relevant assays that may be used to assess the level, function and/or activity of immune cells in the methods described herein.
IV. Inflammatory and Autoimmune Conditions
The methods described herein can be used to treat an inflammatory or autoimmune condition or disease in a subject in need thereof by administering an effective amount of a neuromodulating agent to the subject. The methods described herein can further include a step of identifying (e.g., diagnosing) a subject who has an inflammatory or autoimmune condition, e.g., an inflammatory or autoimmune condition described herein. The method can include administering locally to the subject a neuromodulating agent described herein in a dose (e.g., effective amount) and for a time sufficient to treat the autoimmune or inflammatory condition or disease.
The methods described herein can be used to inhibit an immune response in a subject in need thereof, e.g., the subject has an autoimmune condition and is in need of inhibiting an immune response against self- or auto-antibodies (e.g., the subject has Graves' disease, systemic lupus erythematosus (SLE or lupus), type 1 diabetes, multiple sclerosis (MS), plaque psoriasis, rheumatoid arthritis (RA) or another autoimmune condition described herein). The methods described herein can also include a step of selecting a subject in need of inhibiting an immune response, e.g., selecting a subject who has or who has been identified to have an inflammatory or autoimmune condition.
The methods described herein can also be used to potentiate or increase an immune response in a subject in need thereof, e.g., an immune response to an infection. For example, the subject has a chronic infection (e.g., a persistent viral infection, bacterial infection, fungal infection, mycoplasma infection or parasitic infection). The viral infection may be, e.g., a persistent viral infection from hepatitis virus, a human immunodeficiency virus (HIV), a human T-lymphotrophic virus (HTLV), a herpes virus, an Epstein-Barr virus, or a human papilloma virus. Persistent viral infections may also include infections caused by a latent virus (e.g., JC virus), e.g., the subject has progressive multifocal leukoencephalopathy (PML). The methods described herein can also include a step of selecting a subject in need of potentiating an immune response, e.g., selecting a subject who has a persistent or chronic infection.
The methods described herein include administering to a subject having an inflammatory or immune condition associated with an immune cell listed in column 2 of Table 12 a neuromodulating agent that modulates the activity and/or function of a correspondingly listed gene in column 1 of Table 12, in an amount and for a time sufficient to treat the subject (e.g., to reduce symptoms of the inflammatory or autoimmune condition or modulate one of the immune cell activities described herein above). The neuromodulating agent may be a neuropeptide having the sequence referenced by accession number of a neuropeptide listed in column 3 of Table 12 for the corresponding gene, or an analog thereof, e.g., a sequence having at least 75%, 80%, 85%, 90%, 90%, 98%, 99% identity to the sequence referenced by accession number.
In the methods described herein relating to inflammatory and autoimmune conditions, the condition may be selected from: Acute Disseminated Encephalomyelitis (ADEM); Acute necrotizing hemorrhagic leukoencephalitis; Addison's disease; Adjuvant-induced arthritis; Agammaglobulinemia; Alopecia areata; Amyloidosis; Ankylosing spondylitis; Anti-GBM/Anti-TBM nephritis; Antiphospholipid syndrome (APS); Autoimmune angioedema; Autoimmune aplastic anemia; Autoimmune dysautonomia; Autoimmune gastric atrophy; Autoimmune hemolytic anemia; Autoimmune hepatitis; Autoimmune hyperlipidemia; Autoimmune immunodeficiency; Autoimmune inner ear disease (AIED); Autoimmune myocarditis; Autoimmune oophoritis; Autoimmune pancreatitis; Autoimmune retinopathy; Autoimmune thrombocytopenic purpura (ATP); Autoimmune thyroid disease; Autoimmune urticarial; Axonal & neuronal neuropathies; Balo disease; Behcet's disease; Bullous pemphigoid; Cardiomyopathy; Castleman disease; Celiac disease; Chagas disease; Chronic inflammatory demyelinating polyneuropathy (CIDP); Chronic recurrent multifocal ostomyelitis (CRMO); Churg-Strauss syndrome; Cicatricial pemphigoid/benign mucosal pemphigoid; Crohn's disease; Cogans syndrome; Collagen-induced arthritis; Cold agglutinin disease; Congenital heart block; Coxsackie myocarditis; CREST disease; Essential mixed cryoglobulinemia; Demyelinating neuropathies; Dermatitis herpetiformis; Dermatomyositis; Devic's disease (neuromyelitis optica); Discoid lupus; Dressler's syndrome; Endometriosis; Eosinophilic esophagitis; Eosinophilic fasciitis; Erythema nodosum Experimental allergic encephalomyelitis; Experimental autoimmune encephalomyelitis; Evans syndrome; Fibromyalgia; Fibrosing alveolitis; Giant cell arteritis (temporal arteritis); Giant cell myocarditis; Glomerulonephritis; Goodpasture's syndrome; Granulomatosis with Polyangiitis (GPA) (formerly called Wegener's Granulomatosis); Graves' disease; Guillain-Barre syndrome; Hashimoto's encephalitis; Hashimoto's thyroiditis; Hemolytic anemia; Henoch-Schonlein purpura; Herpes gestationis; Hypogammaglobulinemia; Idiopathic thrombocytopenic purpura (ITP); IgA nephropathy; IgG4-related sclerosing disease; Immunoregulatory lipoproteins; Inclusion body myositis; Interstitial cystitis; Inflammatory bowel disease; Juvenile arthritis; Juvenile oligoarthritis; Juvenile diabetes (Type 1 diabetes); Juvenile myositis; Kawasaki syndrome; Lambert-Eaton syndrome; Leukocytoclastic vasculitis; Lichen planus; Lichen sclerosus; Ligneous conjunctivitis; Linear IgA disease (LAD); Lupus (SLE); Lyme disease, chronic; Meniere's disease; Microscopic polyangiitis; Mixed connective tissue disease (MCTD); Mooren's ulcer; Mucha-Habermann disease; Multiple sclerosis; Myasthenia gravis; Myositis; Narcolepsy; Neuromyelitis optica (Devic's); Neutropenia; Non-obese diabetes; Ocular cicatricial pemphigoid; Optic neuritis; Palindromic rheumatism; PANDAS (Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus); Paraneoplastic cerebellar degeneration; Paroxysmal nocturnal hemoglobinuria (PNH); Parry Romberg syndrome; Parsonnage-Turner syndrome; Pars planitis (peripheral uveitis); Pemphigus; Pemphigus vulgaris; Peripheral neuropathy; Perivenous encephalomyelitis; Pernicious anemia; POEMS syndrome; Polyarteritis nodosa; Type I, II, & III autoimmune polyglandular syndromes; Polymyalgia rheumatic; Polymyositis; Postmyocardial infarction syndrome; Postpericardiotomy syndrome; Progesterone dermatitis; Primary biliary cirrhosis; Primary sclerosing cholangitis; Psoriasis; Plaque Psoriasis; Psoriatic arthritis; Idiopathic pulmonary fibrosis; Pyoderma gangrenosum; Pure red cell aplasia; Raynauds phenomenon; Reactive Arthritis; Reflex sympathetic dystrophy; Reiter's syndrome; Relapsing polychondritis; Restless legs syndrome; Retroperitoneal fibrosis; Rheumatic fever; Rheumatoid arthritis; Sarcoidosis; Schmidt syndrome; Scleritis; Scleroderma; Sclerosing cholangitis; Sclerosing sialadenitis; Sjogren's syndrome; Sperm & testicular autoimmunity; Stiff person syndrome; Subacute bacterial endocarditis (SBE); Susac's syndrome; Sympathetic ophthalmia; Systemic lupus erythematosus (SLE); Systemic sclerosis; Takayasu's arteritis; Temporal arteritis/Giant cell arteritis; Thrombocytopenic purpura (TTP); Tolosa-Hunt syndrome; Transverse myelitis; Type 1 diabetes; Ulcerative colitis; Undifferentiated connective tissue disease (UCTD); Uveitis; Vasculitis; Vesiculobullous dermatosis; Vitiligo; Wegener's granulomatosis (now termed Granulomatosis with Polyangiitis (GPA).
V. Infection
Chronic Infections
As used herein, by “persistent infection” or “chronic infection” is meant an infection in which the infectious agent (e.g., virus, bacterium, parasite, mycoplasm, or fungus) is not cleared or eliminated from the infected host, even after the induction of an immune response. Persistent infections may be chronic infections, latent infections, or slow infections. While acute infections are relatively brief (lasting a few days to a few weeks) and resolved from the body by the immune system, persistent infections may last for months, years, or even a lifetime. These infections may also recur frequently over a long period of time, involving stages of silent and productive infection without cell killing or even producing excessive damage to the host cells. The causative infectious agents may also be detected in the host (e.g., inside specific cells of infected individuals) even after the immune response has resolved, using standard techniques. Mammals are diagnosed as having a persistent infection according to any standard method known in the art and described, for example, in U.S. Pat. Nos. 6,368,832, 6,579,854, and 6,808,710. Described herein, inter alia, are methods of treating a chronic infection in a subject with a neuromodulating agent described herein. The method may include administering locally to the subject a neuromodulating agent described herein in a dose (e.g., effective amount) and for a time sufficient to treat the infection. In embodiments, the infection is caused by a pathogen from one of the 3 following major categories:
i) viruses, including the members of the Retroviridae family such as the lentiviruses (e.g., Human immunodeficiency virus (HIV) and deltaretroviruses (e.g., human T cell leukemia virus I (HTLV-I), human T cell leukemia virus II (HTLV-II)); Hepadnaviridae family (e.g., hepatitis B virus (HBV)), Flaviviridae family (e.g., hepatitis C virus (HCV)), Adenoviridae family (e.g., Human Adenovirus), Herpesviridae family (e.g., Human cytomegalovirus (HCMV), Epstein-Barr virus, herpes simplex virus 1 (HSV-1), herpes simplex virus 2 (HSV-2), human herpesvirus 6 (HHV-6), varicella-zoster virus), Papillomaviridae family (e.g., Human Papillomavirus (HPV)), Parvoviridae family (e.g., Parvovirus B19), Polyomaviridae family (e.g., JC virus and BK virus), Paramyxoviridae family (e.g., Measles virus), Togaviridae family (e.g., Rubella virus) as well as other viruses such as hepatitis D virus;
ii) bacteria, such as those from the following families: Salmonella (e.g., S. enterica Typhi), Mycobacterium (e.g., M. tuberculosis and M. leprae), Yersinia (Y. pestis), Neisseria (e.g., N. meningitides, N. gonorrhea), Burkholderia (e.g., B. pseudomallei), Brucella, Chlamydia, Helicobacter, Treponema, Borrelia, Staphylococcus (e.g., S. aureus), and Pseudomonas; and
iii) parasites, such as Leishmania, Toxoplasma, Trypanosoma, Plasmodium, Schistosoma, or Encephalitozoon.
In some embodiments, the infection is a fungal infection, e.g., an aspergillus infection. In some embodiments, the infection is a methicillin resistant Staphylococcus aureus infection.
VI. Combination Therapy
In some embodiments, neuromodulating agents described herein are be administered in combination with a second therapeutic agent for treatment of an autoimmune or inflammatory disease or condition or an infection.
The neuromodulating agents described herein may be administered in combination with one or more additional therapies (e.g., 1, 2, 3 or more additional therapeutic agents). The two or more agents can be administered at the same time (e.g., administration of all agents occurs within 10 minutes, 5 minutes, 2 minutes or less). The agents can also be administered simultaneously via co-formulation. The two or more agents can also be administered sequentially, such that the action of the two or more agents overlaps and their combined effect is such that the reduction in a symptom, or other parameter related to the disorder is greater than what would be observed with one agent or treatment delivered alone or in the absence of the other. The effect of the two or more treatments can be partially additive, wholly additive, or greater than additive (e.g., synergistic). Sequential or substantially simultaneous administration of each therapeutic agent can be effected by any appropriate route including, but not limited to, oral routes, intravenous routes, intramuscular routes, local routes, and direct absorption through mucous membrane tissues. The therapeutic agents can be administered by the same route or by different routes. For example, a first therapeutic agent of the combination may be administered by intravenous injection while a second therapeutic agent of the combination can be administered locally in a compound-impregnated microcassette. The first therapeutic agent may be administered immediately, up to 1 hour, up to 2 hours, up to 3 hours, up to 4 hours, up to 5 hours, up to 6 hours, up to 7 hours, up to, 8 hours, up to 9 hours, up to 10 hours, up to 11 hours, up to 12 hours, up to 13 hours, 14 hours, up to hours 16, up to 17 hours, up 18 hours, up to 19 hours up to 20 hours, up to 21 hours, up to 22 hours, up to 23 hours up to 24 hours or up to 1-7, 1-14, 1-21 or 1-30 days before or after the second therapeutic agent.
For use in treating inflammatory and autoimmune related diseases or conditions, the second agent can be a disease-modifying anti-rheumatic drug (DMARD), a biologic response modifier, a corticosteroid, or a nonsteroidal anti-inflammatory medication (NSAID). In some embodiments, the second agent is prednisone, prednisolone, methylprednisolone, methotrexate, hydroxycholorquine, sulfasalazine, leflunomide, cyclophosphamide, azathioprine, or a biologic such as tofacitinib, adalimumab, abatacept, anakinra, kineret, certolizumab, etanercept, golimumab, infliximab, rituximab or tocilizumab. For example, if the disease is RA, the second agent may be one or more of: prednisone, prednisolone and methylprednisolone, methotrexate, hydroxycholorquine, sulfasalazine, leflunomide, cyclophosphamide and azathioprine, tofacitinib, adalimumab, abatacept, anakinra, kineret, certolizumab, etanercept, golimumab, infliximab, rituximab or tocilizumab.
For use in treating infectious disease, the second agent can be an antiviral compound (e.g., vidarabine, acyclovir, gancyclovir, valgancyclovir, nucleoside-analog reverse transcriptase inhibitor (NRTI) (e.g., AZT (Zidovudine), ddl (Didanosine), ddC (Zalcitabine), d4T (Stavudine), or 3TC (Lamivudine)), non-nucleoside reverse transcriptase inhibitor (NNRTI) (e.g., (nevirapine or delavirdine), protease inhibitor (saquinavir, ritonavir, indinavir, or nelfinavir), ribavirin, or interferon); an antibacterial compound; an antifungal compound; or an antiparasitic compound.
In some embodiments, the second agent is an anti-inflammatory compound. In some embodiments, the second agent is an analgesic.
Optionally, the subject is further administered a vaccine that elicits a protective immune response against the infectious agent that causes a persistent infection.
VII. Methods of Treatment
Administration
An effective amount of a neuromodulating agent described herein for treatment of am inflammatory or autoimmune disease or condition or an infection can be administered to a subject by standard methods. For example, the agent can be administered by any of a number of different routes including, e.g., intravenous, intradermal, subcutaneous, percutaneous injection, oral, transdermal (topical), or transmucosal. The neuromodulating agent can be administered orally or administered by injection, e.g., intramuscularly, or intravenously. The most suitable route for administration in any given case will depend on the particular agent administered, the patient, the particular disease or condition being treated, pharmaceutical formulation methods, administration methods (e.g., administration time and administration route), the patient's age, body weight, sex, severity of the diseases being treated, the patient's diet, and the patient's excretion rate. The agent can be encapsulated or injected, e.g., in a viscous form, for delivery to a chosen site, e.g., a lymph node. The agent can be provided in a matrix capable of delivering the agent to the chosen site. Matrices can provide slow release of the agent and provide proper presentation and appropriate environment for cellular infiltration. Matrices can be formed of materials presently in use for other implanted medical applications. The choice of matrix material is based on any one or more of: biocompatibility, biodegradability, mechanical properties, and cosmetic appearance and interface properties. One example is a collagen matrix.
The agent (e.g., peptide, neurotransmitter, small molecule, nucleic acid, protein such as an antibody) can be incorporated into pharmaceutical compositions suitable for administration to a subject, e.g., a human. Such compositions typically include the agent and a pharmaceutically acceptable carrier. As used herein the term “pharmaceutically acceptable carrier” is intended to include any and all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic and absorption delaying agents, and the like, compatible with pharmaceutical administration. The use of such media and agents for pharmaceutically active substances are known. Except insofar as any conventional media or agent is incompatible with the active compound, such media can be used in the compositions of the invention. Supplementary active compounds can also be incorporated into the compositions.
A pharmaceutical composition can be formulated to be compatible with its intended route of administration. Solutions or suspensions used for parenteral, intradermal, or subcutaneous application can include the following components: a sterile diluent such as water for injection, saline solution, fixed oils, polyethylene glycols, glycerine, propylene glycol or other synthetic solvents; antibacterial agents such as benzyl alcohol or methyl parabens; antioxidants such as ascorbic acid or sodium bisulfite;
chelating agents such as ethylenediaminetetraacetic acid; buffers such as acetates, citrates or phosphates and agents for the adjustment of tonicity such as sodium chloride or dextrose. pH can be adjusted with acids or bases, such as hydrochloric acid or sodium hydroxide. The parenteral preparation can be enclosed in ampoules, disposable syringes or multiple dose vials made of glass or plastic.
Pharmaceutical compositions suitable for injectable use include sterile aqueous solutions (where water soluble) or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion. For intravenous administration, suitable carriers include physiological saline, bacteriostatic water, or phosphate buffered saline (PBS). In all cases, the composition must be sterile and should be fluid to the extent that easy syringability exists. It must be stable under the conditions of manufacture and storage and must be preserved against the contaminating action of microorganisms such as bacteria and fungi. The carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (for example, glycerol, propylene glycol, and liquid polyethylene glycol, and the like), and suitable mixtures thereof. The proper fluidity can be maintained, for example, by the use of a coating such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants. Prevention of the action of microorganisms can be achieved by various antibacterial and antifungal agents, for example, parabens, chlorobutanol, phenol, ascorbic acid, thimerosal, and the like. In many cases, it will be preferable to include isotonic agents, for example, sugars, polyalcohols such as mannitol, sorbitol, and sodium chloride in the composition. Prolonged absorption of the injectable compositions can be brought about by including in the composition an agent which delays absorption, for example, aluminum monostearate and gelatin.
Sterile injectable solutions can be prepared by incorporating the active compound (e.g., a neuromodulating agent described herein) in the required amount in an appropriate solvent with one or a combination of ingredients enumerated above, as required, followed by filtered sterilization. Generally, dispersions are prepared by incorporating the active compound into a sterile vehicle which contains a basic dispersion medium and the required other ingredients from those enumerated above. In the case of sterile powders for the preparation of sterile injectable solutions, the preferred methods of preparation are vacuum drying and freeze-drying which yields a powder of the active ingredient plus any additional desired ingredient from a previously sterile-filtered solution thereof.
Oral compositions generally include an inert diluent or an edible carrier. They can be enclosed in gelatin capsules or compressed into tablets. For the purpose of oral therapeutic administration, the active compound can be incorporated with excipients and used in the form of tablets, troches, or capsules. Oral compositions can also be prepared using a fluid carrier for use as a mouthwash, wherein the compound in the fluid carrier is applied orally and swished and expectorated or swallowed. Pharmaceutically compatible binding agents, and/or adjuvant materials can be included as part of the composition. The tablets, pills, capsules, troches and the like can contain any of the following ingredients, or compounds of a similar nature: a binder such as microcrystalline cellulose, gum tragacanth or gelatin; an excipient such as starch or lactose, a disintegrating agent such as alginic acid, or corn starch; a lubricant such as magnesium stearate; a glidant such as colloidal silicon dioxide; a sweetening agent such as sucrose or saccharin; or a flavoring agent such as peppermint, methyl salicylate, or orange flavoring.
Systemic administration can also be by transmucosal or transdermal means. For transmucosal or transdermal administration, penetrants appropriate to the barrier to be permeated are used in the formulation. Such penetrants are generally known, and include, for example, for transmucosal administration, detergents, bile salts, and fusidic acid derivatives. Transmucosal administration can be accomplished through the use of nasal sprays or suppositories. For transdermal administration, the active compounds are formulated into ointments, salves, gels, or creams as generally known in the art.
The active compounds can be prepared with carriers that will protect the compound against rapid elimination from the body, such as a controlled release formulation, including implants and microencapsulated delivery systems. Biodegradable, biocompatible polymers can be used, such as ethylene vinyl acetate, polyanhydrides, polyglycolic acid, collagen, polyorthoesters, and polylactic acid. Methods for preparation of such formulations will be apparent to those skilled in the art. Liposomal suspensions (including liposomes targeted to infected cells with monoclonal antibodies to viral antigens) can also be used as pharmaceutically acceptable carriers. These can be prepared according to methods known to those skilled in the art.
Nucleic acid molecule agents described herein can be administered directly (e.g., therapeutic mRNAs) or inserted into vectors used as gene therapy vectors. Gene therapy vectors can be delivered to a subject by, for example, intravenous injection, local administration (see U.S. Pat. No. 5,328,470) or by stereotactic injection (see, e.g., Chen et al., PNAS 91:3054 1994). The pharmaceutical preparation of the gene therapy vector can include the gene therapy vector in an acceptable diluent, or can include a slow release matrix in which the gene delivery vehicle is imbedded. Alternatively, where the complete gene delivery vector can be produced intact from recombinant cells, e.g., retroviral vectors, the pharmaceutical preparation can include one or more cells which produce the gene delivery system.
The pharmaceutical compositions can be included in a container, pack, or dispenser together with instructions for administration.
Methods of formulating pharmaceutical agents are known in the art, e.g., Niazi, Handbook of Pharmaceutical Manufacturing Formulations (Second Edition), CRC Press 2009, describes formulation development for liquid, sterile, compressed, semi-compressed and OTC forms. Transdermal and mucosal delivery, lymphatic system delivery, nanoparticles, controlled drug release systems, theranostics, protein and peptide drugs, and biologics delivery are described in Wang et al., Drug Delivery: Principles and Applications (Second Edition), Wiley 2016; formulation and delivery of peptide and protein agent is described, e.g., in Banga, Therapeutic Peptides and Proteins: Formulation, Processing, and Delivery Systems (Third Edition), CRC Press 2015.
The neuromodulating agents described herein may be administered in a unit dose form. For example, the methods described herein include administration of a unit dose form of a beta-adrenergic inhibitory agent. The unit dose can be less than or more than a unit dose of the beta blocker that is FDA approved for high blood pressure, a cardiac condition, angina, essential tremor, hypertrophic subaortic stenosis, migraine prophylaxis, myocardial infarction prophylaxis, pheochromocytoma, tachyarrhythmias, or thyrotoxicosis. The beta-adrenergic blocking agent can be selected from: acebutolol, atenolol, bisoprolol, metoprolol, nadolol, and propranolol. The agent can be formulated for parenteral administration, enteral administration (e.g., oral), or local administration (e.g., epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional or intra-tumoral administration).
The unit dose form can be a unit dose of a cholinergic inhibitory agent. The unit dose can be less than or more than a unit dose of the cholinergic blocker that is FDA approved for Alzheimer's Disease, Cardiac and Respiratory Disorders, Atony and Neurogenic Bladder, motion sickness, Myasthenia gravis, Peptic ulcer, IBD, Glaucoma, Parkinson's Disease, reflex neurogenic bladder (spinal cord injury), or Incontinence-overactive bladder. The cholinergic blocking agent can be selected from: tacrine, galantamine, rivastigmine, donepezil. The unit dose can be configured for local administration, e.g., epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional or intra-tumoral administration.
The unit dose form can be a unit dose of a dopaminergic inhibitory agent. The unit dose can be less than or more than a unit dose of the dopamine blocker that is FDA approved for schizophrenia, bipolar disorder, or nausea and vomiting. The dopamine blocking agent can be selected from: acepromazine, amisulpride, amoxapine, asenapine, azaperone, benperidol, Bromopride, butaclamol, chlorpromazine, chlorprothixene, clopenthixol, Domperidone, droperidol, eticlopride, flupenthixol, fluphenazine, fluspirilene, haloperidol, hydroxyzine, iodobenzamide, loxapine, mesoridazine, levomepromazine, metoclopramide, nafadotride, nemonapride, olanzapine, paliperidone, penfluridol, perazine, perphenazine, pimozide, prochlorperazine, promazine, quetiapine, raclopride, remoxipride, risperidone, spiperone, spiroxatrine, stepholidine, sulpiride, sultopride, tetrahydropalmatine, thiethylperazine, thioridazine, thiothixene, tiapride, trifluoperazine, trifluperidol, triflupromazine, and ziprasidone. The unit dose can be configured for local administration, e.g., epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional or intra-tumoral administration.
The unit dose can be a unit dose of a serotonin inhibitory agent. The unit dose can be less than or more than a unit dose of the serotonin blocker that is FDA approved for treatment of a mood disorder, e.g., major depressive disorder (MDD), anxiety disorder, obsessive-compulsive disorder (OCD), attention deficit hyperactivity disorder (ADHD), chronic neuropathic pain, fibromyalgia syndrome (FMS), or for the relief of menopausal symptoms. The serotonin blocking agent can be selected from: Venlafaxine, Desvenlafaxine, Duloxetine, Milnacipran Levomilnacipran, Sibutramine, and Atomoxetine. The unit dose can be configured for local administration, e.g., epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional or intra-tumoral administration.
Local Administration
The neuromodulating agents described herein can be administered locally, e.g., to the site of damage or disease associated with the inflammatory or autoimmune condition or disease or infection in the subject. Examples of local administration include epicutaneous, inhalational, intra-articular, intrathecal, intravaginal, intravitreal, intrauterine, intra-lesional administration, lymph node administration, and administration to a mucous membrane of the subject, wherein the administration is intended to have a local and not a systemic effect. As an example, for the treatment of an infection described herein, the neuromodulating agent may be administered locally in a compound-impregnated substrate such as a wafer, microcassette, or resorbable sponge placed in direct contact with the affected tissue. Alternatively, the neuromodulating agent is infused into the brain or cerebrospinal fluid using standard methods. As another example, for a cardiac infection, the neuromodulating agent may be delivered locally, for example, to the cardiac tissue (e.g., myocardium, pericardium, or endocardium) by direct intracoronary injection through the chest wall or using standard percutaneous catheter based methods. As yet another example, a chronic infection described herein may be treated, for example, by administering the neuromodulating agent locally by inhalation, e.g., in the form of an aerosol spray from a pressured container or dispenser which contains a suitable propellant, e.g., a gas such as carbon dioxide or a nebulizer. A neuromodulating agent for use in the methods described herein can be administered into a lymph node or administered to a mucous membrane of the subject.
Dosing
Subjects that can be treated as described herein are subjects with an inflammatory or autoimmune disease or condition, or subjects with an infection. The methods described herein may include a step of selecting a treatment for a patient. The method includes (a) identifying (e.g., diagnosing) a patient who has an autoimmune or inflammatory disease or condition or an infection, and (b) selecting a neuromodulating agent, e.g., a neuromodulating agent described herein, to treat the condition in the patient. In some embodiments, the method includes administering the selected treatment (e.g., an effective amount of a neuromodulating agent) to the subject. In some embodiments, the subject has had denervation (e.g., surgical denervation or traumatic denervation such as from spinal cord injury).
In some embodiments, the method includes administering the selected treatment to the subject.
In some embodiments, the agent is administered in an amount and for a time effective to result in one of (or more, e.g., 2 or more, 3 or more, 4 or more of): (a) reduced auto-antibody levels, (b) reduced inflammation, (c) increased organ function (d) reduced pain, (e) decreased rate or number of relapses or flare-ups of the disease, (f) increased quality of life.
In some embodiments, the immune cell expresses one or more neurome genes.
The methods described herein can include profiling an immune cell to determine whether it expresses a neurome gene (e.g., a neurome gene in Table 7 or Table 8 (e.g., a biosynthesis, channel, transporter, ligand, receptor, signaling, synaptic, structural, or vesicular gene)). Profiling can be performed using RNA sequencing, microarray analysis, or serial analysis of gene expression (SAGE). Other techniques that can be used to assess gene expression include quantitative RT-PCR. Profiling results can be confirmed using other methods such as immunohistochemistry, western blot analysis, flow cytometry, or southern blot analysis. Profiling results can be used to determine which neuromodulating agent should be administered to treat the patient.
A neuromodulating agent administered according to the methods described herein does not have a direct effect on the central nervous system (CNS) or gut. Any effect on the CNS or gut is reduced compared to the effect observed if the neuromodulating agent is administered directly to the CNS or gut. In some embodiments, direct effects on the CNS or gut are avoided by modifying the neuromodulating agent not to cross the BBB, as described herein above, or administering the agent locally to a subject.
Subjects with an inflammatory or autoimmune disease or condition or infection are treated with an effective amount of a neuromodulating agent. The methods described herein also include contacting immune cells with an effective amount of a neuromodulating agent. In some embodiments, an effective amount of a neuromodulating agent is an amount sufficient to increase or decrease lymph node innervation, nerve firing in a lymph node, the development of HEVs or TLOs, immune cell migration, proliferation, recruitment, lymph node homing, lymph node egress, differentiation, activation, polarization, cytokine production, degranulation, maturation, ADCC, ADCP, or antigen presentation. In some embodiments, an effective amount of a neuromodulating agent is an amount sufficient to treat the autoimmune or inflammatory condition or infection, reduce symptoms of an autoimmune or inflammatory condition, reduce inflammation, reduce auto-antibody levels, increase organ function, decrease rate or number of relapses or flare-ups, reduce viral load, or control infection.
The methods described herein may also include a step of assessing the subject for a parameter of immune response, e.g., assessing the subject for one or more (e.g., 2 or more, 3 or more, 4 or more) of: Th2 cells, T cells, circulating monocytes, neutrophils, peripheral blood hematopoietic stem cells, macrophages, mast cell degranulation, activated B cells, NKT cells, macrophage phagocytosis, macrophage polarization, antigen presentation, immune cell activation, immune cell proliferation, immune cell lymph node homing or egress, T cell differentiation, immune cell recruitment, immune cell migration, lymph node innervation, dendritic cell maturation, HEV development, TLO development, or cytokine production. In embodiments, the method includes measuring a cytokine or marker associated with the particular immune cell type, as listed in Table 9 (e.g., performing an assay listed in Table 9 for the cytokine or marker). In some embodiments, the method includes measuring a chemokine, receptor, or immune cell trafficking molecule, as listed in Tables 10 and 11 (e.g., performing an assay to measure the chemokine, marker, or receptor). The assessing may be performed after the administration, before the first administration and/or during a course a treatment, e.g., after a first, second, third, fourth or later administration, or periodically over a course of treatment, e.g., once a month, or once every 3 months. In one embodiment, the method includes assessing the subject prior to treatment or first administration and using the results of the assessment to select a subject for treatment. In certain embodiments, the method also includes modifying the administering step (e.g., stopping the administration, increasing or decreasing the periodicity of administration, increasing or decreasing the dose of the neuromodulating agent) based on the results of the assessment. For example, in embodiments where increasing a parameter of immune response described herein is desired (e.g., in infectious disease-related embodiments where, e.g., an increase in Th2 cells is desired), the method includes stopping the administration if a marker of Th2 cells is not increased at least 5%, 10%, 15%, 20%, 30%, 40%, 50% or more; or the method includes increasing the periodicity of administration if the marker of Th2 cells is not increased at least 5%, 10%, 15%, 20%, 30%, 40%, 50% or more; or the method includes increasing the dose of the neuromodulating agent if the marker of Th2 cells is not increased at least 5%, 10%, 15%, 20%, 30%, 40%, 50% or more. For example, in embodiments where decreasing a parameter of immune response described herein is desired (e.g., embodiments where a decrease in Th2 cells is desired), the method includes stopping the administration if a marker of Th2 cells is not decreased at least 5%, 10%, 15%, 20%, 30%, 40%, 50% or more; or the method includes increasing the periodicity of administration if the marker of Th2 cells is not decreased at least 5%, 10%, 15%, 20% or more; or the method includes increasing the dose of the neuromodulating agent if the marker of Th2 cells is not decreased at least 5%, 10%, 15%, 20% or more.
In certain embodiments, immune effects (e.g., immune cell activities) are modulated in a subject (e.g., a subject having an inflammatory or autoimmune condition) or in a cultured cell by at least 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80%, compared to before an administration, e.g., of a dosing regimen, of a neuromodulating agent such as those described herein. In certain embodiments, the immune effects are modulated in the subject or a cultured cell between 5-20%, between 5-50%, between 10-50%, between 20-80%, between 20-70%, between 50-100%, between 100-500%. The immune effects described herein may be assessed by standard methods:
The neuromodulating agents described herein are administered in an amount (e.g., an effective amount) and for a time sufficient to effect one of the outcomes described above. The neuromodulating agent may be administered once or more than once. The neuromodulating agent may be administered once daily, twice daily, three times daily, once every two days, once weekly, twice weekly, three times weekly, once biweekly, once monthly, once bimonthly, twice a year, or once yearly. Treatment may be discrete (e.g., an injection) or continuous (e.g., treatment via an implant or infusion pump). Subjects may be evaluated for treatment efficacy 1 week, 2 weeks, 1 month, 2 months, 3 months, 4 months, 5 months, 6 months or more following administration of a neuromodulating agent depending on the neuromodulating agent and route of administration used for treatment. Depending on the outcome of the evaluation, treatment may be continued or ceased, treatment frequency or dosage may change, or the patient may be treated with a different neuromodulating agent. Subjects may be treated for a discrete period of time (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 months) or until the disease or condition is alleviated, or treatment may be chronic depending on the severity and nature of the disease or condition being treated.
The invention also features a kit comprising (a) a unit dose described herein, and (b) instructions for administering the unit dose to treat a chronic infection or an inflammatory or autoimmune disease or condition.
In some embodiments, the kit includes (a) a unit dose of a neuromodulating agent that increases an immune response described herein, (b) a vaccine against an infectious agent, and (c) instructions for administering the unit dose to prevent or treat an infection caused by the infectious agent.
All references and publications cited herein are hereby incorporated by reference in their entirety.
The following examples are provided to further illustrate some embodiments of the present invention, but are not intended to limit the scope of the invention; it will be understood by their exemplary nature that other procedures, methodologies, or techniques known to those skilled in the art may alternatively be used.
High throughput methods for identifying compounds from libraries that bind to a target molecule have been described previously, see e.g., Janzen and Bernasconi (Eds.), High Throughput Screening: Methods and Protocols (Methods in Molecular Biology), Humana Press 2009. In brief, to identify compounds that bind to the serotonin receptor 5HT2C the following screening assay is performed:
Cell Culture & Membrane (Target Protein) Preparation:
AV12 cells are stably transfected with a eukaryotic expression vector containing the coding region for the human 5HT2C receptor (see e.g., Lucaites, V. L., et al., (1996) Life Sci. 59(13), 1081-1095). To prepare membrane protein preparations, using the technique of Bosworth and Towers, Nature 341, 167, 1989, cells are grown to a cell density of 2-3×106 cells/mL, and 15 L are harvested on a daily basis by centrifugation, washed in phosphate-buffered saline (PBS), and stored as frozen cell pastes at −80° C. To loosen the frozen cell paste, 30 mL of 50 mM Tris-HCl, pH 7.4, at ambient temperature are added to 7.5 grams of pellet. The cell slurry is homogenized on ice in a 55-mL glass/teflon dounce, transferred to a 250-mL conical tube that is then filled to the neck with buffer, mixed, and centrifuged in a table top centrifuge at 200 g (1060 RPM, GH-3.7 rotor) at 4° C. for 15 min. The supernatant is collected and saved on ice. The pellet is resuspended and subjected to the homogenization and centrifugation procedure just described. The 200 g supernatant is again collected and combined with the first supernatant stored on ice. The combined supernatants are then centrifuged at 14,250 rpm in a Sorvall RC5 centrifuge (GSA SLA-1500 rotor) for 50 min at 4° C. The supernatant is gently removed and discarded, and the remaining membrane pellet is resuspended using the dounce homogenizer. The membrane protein concentration is determined (BCA kit) and aliquots of the membrane preparation are quick frozen in liquid nitrogen and stored at −80° C. The average yield is 1.2% of starting weight.
SPA-Format Receptor-Binding Assay:
Twenty microliter of test compound, unlabeled 5-HT control, or assay buffer is added to each well of a 96-well microtiter plate. Fifty microliter of 15-nM [3H]-5HT ligand (5-Hydroxy(3H)tryptamine trifluoroacetate (Code TRK1006 Amersham) at a final concentration of 5 nM/well) is then added to the wells followed by 80 μL (20 ug) of 5HT2C membranes as prepared above and the plates are shaken for 1 min. After a 30-min incubation at room temperature, 0.5 mg of Wheat Germ Agglutinin (WGA)-SPA beads (Amersham biotech) are added, plates are mixed by shaking every 30 min for 2 h and then counted in a MicroBeta Scintillation Counter (Perkin Elemer Wallac). The absence of binding of labeled 5HT ligand in a sample indicates that the test compound has successfully bound the target receptor. Test compounds that bind target receptor with greater than 100 nM EC50 (p<0.05 for at least 3 replicates) are selected for further testing.
A lead candidate for treatment of an autoimmune disorder is identified by the screening method of Example 1. Based on preclinical data from in vitro and in vivo testing of the identified lead compound, it is determined that 120 mg is a safe starting dose in humans.
A ‘3+3’ design of incremental escalation of dose in a cohort of subjects is employed to identify a Maximum Tolerated Dose (MTD) of the lead candidate. Dose escalation is determined using a Fibonacci sequence, whereby an additional 100% of the original dose is administered for the second time, 67% of the second dose for the third time, and so on, until the MTD is reached.
Three patients are given 120 mg of the identified lead compound. If none of the three patients report any dose limiting toxicity (DLT) of this first dose, then the dose is escalated for the next cohort of 3 subjects. If within any one particular cohort one of the patients reports a DLT, the study at that dose is repeated. If two of the patients report DLT, this dose is then regarded as the Maximum Tolerated Dose (MTD).
A high throughput antigen recall assay is used to confirm that the agents identified as described in Example 1 or Example 2 activate T cells. Determining impaired T-cell function by culturing human peripheral blood mononuclear cells (PBMC) in vitro with recall antigens has been described (see e.g., Stone et al, Clin. Immunol. 131:41, 2009). In brief, the following procedure is used for the detection of the modulation of interferon gamma secretion from T cells treated with a compound of interest:
Wells in which the compound of interest induces an amount of interferon gamma as measured by optical density that is greater than 2-fold higher than the unstimulated cell control are identified as being able to induce T cell activation.
To identify novel correlations of neurobiological signaling molecules and immune cells, a list of neurotransmitter and neuropeptide genes and pathways was generated using published literature and UniProt (see Table 1). These genes and pathways were used as inputs to publicly available immune cell databases (e.g., RCAI RefDIC, Reference Database of Immune Cells). Through the bioinformatics analysis, novel correlations were found of overexpression by at least two-fold of certain neurobiological signaling genes of interest in certain individual immune cells. Table 12 lists the neurobiological signaling molecules (column 1) that are targets for therapeutic intervention for immune disorders or conditions through activity on the correlated immune cells (column 2).
Peripheral blood mononuclear cells (PBMCs) were isolated from whole blood by ficoll density separation. Briefly, blood was diluted 1:2 with 0.5 mM EDTA solution in PBS, loaded onto a Ficoll-filled Leucosep tube (Greiner Bio-One), and centrifuged for 20 minutes at 1000×g. After centrifugation, the leukocyte/PBMC layer on top of the separation medium was collected and sequentially washed three times with 0.5 mM EDTA solution in PBS.
T cells were isolated from PBMCs using magnetic bead-based separation following vendor specification, e.g., Biolegend MojoSort Human CD4/CD8 Naïve T Cell Isolation Kit protocol. In brief, the PBMCs were labeled with biotinylated antibodies against cell surface receptors for cells not in the population of interest. The labeled cells are then captured by streptavidin-coated magnetic beads and removed by magnetic incubation. The uncaptured cells that flow through the magnetic separation are predominantly comprised of the population of interest, in this instance CD3+ T cells.
T cells were stained with a 5 μM solution of Tag-it Violet™ dye (BioLegend) for 20 minutes protected from light. The stain was quenched by incubating the cells in cell culture medium containing 10% FBS (complete media).
Stained cells were plated on tissue culture plates and sub-maximally activated with concanavalin A (con A) added to the culture medium. Cells were plated at 0.1×106 cells well. Dopamine, dopaminergic agonist quinpirole, adrenergic agonist isoproterenol, adrenergic antagonist propranolol, and neuropeptide Y were added at a range of concentrations between 0.1 nM and 0.1 mM. Cells were collected at 24, 48, and 72 hrs.
Supernatants were collected at 24, 48, and 72 hrs and cytokine secretion was analyzed by flow cytometry using a LEGENDplex assay (BioLegend). In brief, following manufacturer's protocol, beads pre-coated with antibodies specific to various cytokines were incubated with cell supernatant. Cytokines in the supernatant are confirmed by adding a second detection antibody in a classic “sandwich ELISA” format. The beads were then stained and the captured cytokine composition assessed by flow cytometry.
We found that dopamine stimulation at low sub-nanomolar concentrations induced an increase in the production of the pro-inflammatory cytokines IFNγ, IL-5, IL-6, IL-10, and IL-13 at 72 hours post treatment (
We found that stimulation of T cells with dopamine and the synthetic dopaminergic agonist, quinpirole, induced an increase in the production of the pro-survival cytokine IL-2. For dopamine the effect is observed at 24- and 48-hours post stimulation with nanomolar concentrations of the neurotransmitter. For quinpirole, the effect was seen at all time points tested, again at nanomolar concentrations of the agonist (
We observed that, in contrast to the dopamine data, stimulation of T cells with the adrenergic agonist isoproterenol induced a decrease in the amount of pro-inflammatory cytokines IFNγ, TNFα, and IL-10 in two different donors at multiple time points (
We found that stimulation of T cells with neuropeptide Y induced an increase in the cytokine IL-4 at sub-nanomolar concentrations at 48 hours post-treatment (
Peripheral blood mononuclear cells (PBMCs) were isolated from whole blood by ficoll density separation. Briefly, blood was diluted 1:2 with 0.5 mM EDTA solution in PBS, loaded onto a Ficoll-filled Leucosep tube (Greiner Bio-One), and centrifuged for 20 minutes at 1000×g. After centrifugation, the leukocyte/PBMC layer was collected and sequentially washed three times with 0.5 mM EDTA solution in PBS.
Monocytes (CD14+) were isolated from PBMCs using magnetic bead-based separation following vendor specifications, e.g., Biolegend MojoSort Human CD14 Selection Kit protocol. In brief, PBMCs were labeled with biotinylated antibodies against cell surface receptors for cells not in the population of interest. The labeled cells are then captured by streptavidin-coated magnetic beads and removed by magnetic incubation. The uncaptured cells that flow through the magnetic separation are predominantly comprised of the population of interest, in this case CD14+ monocytes.
Monocytes were differentiated into macrophages by culturing in DMEM complete medium containing 10% FBS for seven days in the presence of 40 ng/mL human M-CSF. Media was changed on day 1 and day 4. On Day 4, macrophages were polarized to various subtypes as follows: M0—incubated with 40 ng/mL M-CSF; M1—cultured with 40 ng/mL M-CSF, 20 ng/mL IFNγ, and 50 ng/mL LPS; M2—incubated with 40 ng/mL M-CSF, 20 ng/mL IL4, 20 ng/mL IL10, and 20 ng/mL TFGB. On day 7, cells were harvested by scraping them from the tissue culture plates and transferring them to 96-well plates. Macrophages were incubated with the neuropeptide CGRP and the small molecule beta adrenergic receptor agonist isoproterenol at varying dilutions from 10 μM to 1 nM.
Supernatants were collected at 24, 48, and 72 hrs and cytokine secretion was analyzed by flow cytometry using a LEGENDplex assay (BioLegend). In brief, following manufacturer's protocol, beads that are pre-coated with antibodies specific to various cytokines were incubated with cell supernatant. Cytokines in the supernatant were confirmed by adding a second detection antibody in a classic “sandwich ELISA” format. The beads were then stained and the captured cytokine composition assessed by flow cytometry.
M1 macrophage polarization is defined as increase in production of IL-12, TNF, IL-6, IL-8, IL-1B, MCP-1 and CCL2. Additionally, markers of M1 polarization that can be detected by RNA include Nos2. M2 polarization is defined as increase in IL-10 and/or a decrease in the M1 cytokines listed above. Additionally, markers of M2 polarization that can be detected by RNA include Arg1, IDO, PF4, CCL24, IL10, and IL4Ralpha.
In this assay, macrophages incubated with the beta adrenergic receptor agonist isoproterenol are polarized toward an M2 phenotype as measured by an increase in the transcripts for Arg1 and IL-10 and a decrease in the transcript of NOS2. Conversely, macrophages stimulated with neuropeptide CGRP are polarized toward an M1 phenotype, as measured by increased secretion of TNFα.
This surprising result indicates that macrophages can be polarized toward an M1 or M2 phenotype strictly via stimulation of neurotransmitter or neuropeptide pathways. M2 polarized macrophages are anti-inflammatory and induce a broadly suppressive immunological cascade, including cytokine secretion, reduced phagocytic activity, and reduced antigen presentation. M1 polarized macrophages are pro-inflammatory and induce a broadly pro-inflammatory immunological cascade, including cytokine secretion, increased phagocytic activity, and increased antigen presentation. As such, this surprising finding indicates that substances that modulate these neurotransmitter/neuropeptide pathways could be used to treat patients with a range of immunological and inflammatory disorders, for example fibrosis, allergy, allergic dermatitis, pancreatitis, ulcerative colitis, inflammatory bowel disease, Hirschsprung's disease, NASH, fatty liver disease, atherosclerosis, hemophagocytic lymphohistiocytosis, hemophagocytic syndrome, myasthenia gravis, glomerulonephritis, and other diseases and conditions in which macrophage activation and polarization plays a role.
C57BL/6J mice were injected in each hock with 50 μL of the immunostimulant CpG ODN (0.1 nmol), 50 μL dopaminergic agonist quinpirole (0.1 nmol) or with 25 μL dopaminergic antagonist (Haloperidol—48.5 nmol) followed by 25 μL quinpirole (0.1 nmol). 24 hours after hock injection, brachial lymph nodes (LN) were harvested in culture medium (RPMI+10% FBS). LNs were transferred to 24-well tissue culture plates containing 0.5 mL LN digestion buffer (RPMI, 2% FBS, collagenase D (3.3 mg/mL), and DNAse I (40 ug/mL)). LN capsules were manually opened with two syringe (26G) needles and the LNs were incubated in digestion buffer for 15 minutes. Digested LNs were filtered with a 40 μM cell strainer and tissues were smashed with the plunger of a 5 mL syringe. Collected cells were washed in culture medium and plated for assays.
Total number of viable cells were assessed by staining with viability dye eFluor 780 (eBioscience). Surface markers of various immune cell subsets were analyzed by staining the cells with antibodies for cell identity (CD3, CD4, CD8, CD19), for the inflammatory marker CD69, and the migratory marker CCR7. The cells were then assayed by flow cytometry.
As can be seen in
CCR7 is one of the predominant chemokine receptors responsible for T cell and other immune cell homing to secondary lymphoid organs and sites of inflammation. As such, the unexpected result described here could be useful in the treatment of multiple diseases in which immune cell migration is pathogenic or therapeutic, for example autoimmune and inflammatory diseases such as fibrosis, allergy, allergic dermatitis, pancreatitis, ulcerative colitis, inflammatory bowel disease, Hirschsprung's disease, NASH, fatty liver disease, atherosclerosis, hemophagocytic lymphohistiocytosis, hemophagocytic syndrome, myasthenia gravis, glomerulonephritis, multiple sclerosis, and others in which preventing migration of inflammatory immune cells (or selectively allowing the migration of anti-inflammatory immune cells) would provide a therapeutic benefit.
Primary Natural Killer (NK) cells are isolated from human peripheral blood using a magnetic bead-based separation kit that negatively selects NK cells by sequestering other defined cell types (T, B, monocytes, etc.).
Isolated NK cells are incubated with a target cell line, for example a Her2 expressing cancer cell line that has been pre-coated with trastuzumab, an anti-Her2 antibody, at a range of target-to-effector cell ratios. Following antibody-dependent cell cytotoxicity (ADCC)—antibody-mediated killing of the target cells by the NK cells, the number of surviving target cells is assessed by a fluorescent viability stain.
NK cells treated with the beta adrenergic agonist metaproterenol induce significantly less ADCC than NK cells that have been pre-treated with a beta adrenergic antagonist (nadolol or propranolol) prior to exposure to the agonist. Thus, adrenergic signaling is sufficient to reduce the cytotoxic capacity of NK cells. Control of the cytotoxicity of NK cells has implications for cancer immunotherapy where activation of NK cell cytotoxicity can increase the response to treatment. Reduction of NK cell cytotoxicity is therapeutically relevant for any auto-antibody driven autoimmune disease in which ADCC contributes to pathogenicity, for example myasthenia gravis, neuromyelitis optica, glomerulonephritis, catastrophic antiphospholipid syndrome, antiphospholipid syndrome, and others.
A patient is diagnosed with multiple sclerosis (MS) by MRI criteria of >2 lesions. The patient is treated orally with propranolol at a dose regimen of 5 mg/day. An MRI scan is administered 3-6 month after treatment initiation. Further MRI scans are obtained at intervals of 6-12 months. Specifically, effect of treatment is measured by the presence/absence of progression in Gadolinium (Gd)-enhancing T1 lesions and new/enlarging (active) T2 lesions. Global Brain Volume changes and rate of atrophy may also be utilized, however, will be employed after 12 months due to possibility of pseudoatrophy. Peripheral blood inflammatory markers may also be measured during relapse and post treatment. In this case, access to a vein will be established and blood will be drawn to be analyzed for peripheral blood inflammatory markers, such as C-Reactive Protein. It is expected that the treated patient exhibits a decrease in Gadolinium (Gd)-enhancing T1 lesions and/or new or enlarging (active) T2 lesions.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an autoimmune condition (e.g., myasthenia gravis), so as to reduce the inflammatory response that contributes to the condition. To this end, a physician of skill in the art can administer to the human patient a neuromodulating agent that reduces the production of pro-inflammatory cytokines (e.g., a dopamine antagonist, such as haloperidol, paliperidone, clozapine, risperidone, olanzapine, quetiapine, ziprasidone, amoxapine, clomipramine, and trimipramine). The dopamine antagonist can be administered at a dose lower or higher than that administered to a patient with a neuropsychiatric disorder, or it can be delivered in a particulate formulation (e.g., a nanoparticle or microparticle) so that it does not cross the blood brain barrier. A dopamine antagonist (e.g., haloperidol) formulated in a nanoparticle can be administered systemically (e.g., by intravenous injection) to treat myasthenia gravis. The dopamine antagonist is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the dopamine antagonist is administered once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The dopamine antagonist decreases T cell production of one or more pro-inflammatory cytokines (e.g., IL-2, IFNγ, IL-5, IL-6, IL-10, and IL-13). The dopamine antagonist is administered to the patient in an amount sufficient to decrease T cell pro-inflammatory cytokine levels by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more), decrease T cell activation, or improve symptoms of myasthenia gravis (e.g., increase walk time or limb control or decrease levels of acetylcholine receptor autoantibodies). Cytokine production can be assessed by collecting a blood sample from the patient and evaluating one or more pro-inflammatory cytokines (e.g., IL-2, IFNγ, IL-5, IL-6, IL-10, and IL-13). The blood sample can be collected one day or more after administration of the dopamine antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of the dopamine antagonist (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the dopamine antagonist). The patient's condition can be evaluated using standard measures of limb control and walk time, and the titer of anti-acetylcholine receptor antibodies can be measured in a blood sample collected from the patient and compared to a titer measured in a blood sample collected prior to treatment with a dopamine antagonist. Improved limb control, walk time, or reduced pro-inflammatory cytokine or anti-acetylcholine receptor antibody levels demonstrate that the dopamine antagonist reduces inflammation and improves myasthenia gravis symptoms, thereby treating the autoimmune condition. If the patient's condition is not improved, a physician of skill in the art can adjust the frequency or dose of the dopaminergic antagonist and again evaluate the above outcomes in the patient.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an autoimmune condition (e.g., multiple sclerosis), so as to reduce the inflammatory response that contributes to the condition. To this end, a physician of skill in the art can administer to the human patient a neuromodulating agent that reduces the production of pro-inflammatory cytokines (e.g., an adrenergic agonist, such as isoproterenol, xamoterol, formoterol, salbutamol, and terbutaline). The adrenergic agonist can be administered at a dose lower or higher than that administered to a patient with a bradycardia or heart failure. An adrenergic agonist (e.g., isoproterenol) can be administered parenterally (e.g., by intramuscular, subcutaneous, or intravenous injection) to treat multiple sclerosis. The adrenergic agonist is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the adrenergic agonist is administered once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The adrenergic agonist decreases T cell production of one or more pro-inflammatory cytokines (e.g., IFNγ, TNFα, or IL-10). The adrenergic agonist is administered to the patient in an amount sufficient to decrease T cell pro-inflammatory cytokine levels by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more), decrease T cell activation, or improve symptoms of multiple sclerosis (e.g., improve the patient's Multiple Sclerosis Severity Score or Expanded Disability Status Scale or reduce the frequency, severity, or duration of relapses in patients with Relapsing Remitting Multiple Sclerosis (RRMS)). Cytokine production can be assessed by collecting a blood sample from the patient and evaluating one or more pro-inflammatory cytokines (e.g., IFNγ, TNFα, or IL-10). The blood sample can be collected one day or more after administration of the dopamine antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of the adrenergic agonist (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the adrenergic agonist). The patient's condition can be evaluated using the Multiple Sclerosis Severity Score or Expanded Disability Status Scale, MRI imaging to visualize lesions (e.g., brain or spinal cord lesions) and the frequency, severity, and duration of relapses can be recorded by a neurologist. Improvements in the Multiple Sclerosis Severity Score or Expanded Disability Status Scale, reduced pro-inflammatory cytokine levels, or less frequent, less severe, or shorter relapses indicate that the adrenergic agonist reduces inflammation and treats multiple sclerosis. If RRMS symptoms (e.g., neurologic symptoms and lesions observed using MRI) are stable and not worsening, that also demonstrates that adrenergic agonists are an effective treatment for multiple sclerosis.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an inflammatory condition (e.g., a patient with allergic asthma or at risk of asthma attacks), so as to reduce the inflammatory response that contributes to the condition. To this end, a physician of skill in the art can administer to the human patient a neuromodulating agent that reduces the production of inflammatory cytokines (e.g., an agent that decreases Neuropeptide Y signaling, such as a Neuropeptide Y blocking antibody or a Neuropeptide Y receptor antagonist, such as velneperit, BVD-10, GR-231,118, BIBP-3226, SF11, and UR-AK49). The Neuropeptide Y blocking antibody can be administered parenterally (e.g., by intravenous infusion) to treat asthma. The Neuropeptide Y blocking antibody is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the Neuropeptide Y blocking antibody is administered twice a year, once every three months, once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The Neuropeptide Y blocking antibody decreases T cell production of one or more cytokines that activate an allergic response (e.g., IL-4 or IL-13). The Neuropeptide Y blocking antibody is administered to the patient in an amount sufficient to decrease IL-4 or IL-13 levels by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more) or improve symptoms of asthma (e.g., improve forced air volume exhalation or reduce frequency of asthma attacks). Cytokine production can be assessed by collecting a blood sample from the patient and evaluating IL-4 or IL-13. The blood sample can be collected one day or more after administration of the dopamine antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of the Neuropeptide Y blocking antibody (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the Neuropeptide Y blocking antibody). The patient's condition can be evaluated using forced air volume exhalation and recording the number of asthma attacks. Improvements in forced are volume exhalation, reduced frequency of asthma attacks, or reduced IL-4 or IL-13 levels demonstrate that the Neuropeptide Y blocking antibody reduces inflammation and treats asthma.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an infection (e.g., a parasitic infection, for example Chagas disease caused by infection with Trypanosoma cruzi), so as to induce an anti-parasitic immune response. To this end, a physician of skill in the art can administer to the human patient a neuromodulating agent that increases T cell production of IL-4 or IL-13, which are primary cytokine mediators of the anti-parasitic immune response. The neuromodulating agent that increases production of IL-4 or IL-13 can be a neuropeptide signaling modulator (e.g., Neuropeptide Y or an analog thereof, or a Neuropeptide Y receptor agonist, such as pancreatic polypeptide, Peptide YY, and BWX 46). Neuropeptide Y can be modified to prevent blood brain barrier crossing (e.g., formulated for delivery in a microparticle) and administered parenterally (e.g., by subcutaneous or intravenous injection) to treat the parasitic infection. Neuropeptide Y is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). Neuropeptide Y can be administered once, or as many times as necessary to treat or resolve the infection (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 times or more). Neuropeptide Y can be administered every other week, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
Neuropeptide Y increases T cell production of IL-4. Neuropeptide Y is administered to the patient in an amount sufficient to increase IL-4 levels by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more) or to control or resolve the parasitic infection. Cytokine production can be assessed by collecting a blood sample from the patient and evaluating IL-4. The blood sample can be collected one day or more after administration of the dopamine antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of Neuropeptide Y (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of Neuropeptide Y). The infection can be evaluated using a blood sample collected from the patient (e.g., by comparing a blood sample collected after administration of Neuropeptide Y to a blood sample collected before administration of Neuropeptide Y). Increased IL-4 levels, or reduced or absent Trypanosoma cruzi in a patient blood sample as evaluated using microscopic examination or ELISA demonstrate that Neuropeptide Y effectively treats parasitic infection.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an inflammatory condition (e.g., intestinal inflammation, such as inflammatory bowel disease (IBD), ulcerative colitis (UC), or Hirschsprung's disease-associated enterocolitis (HAEC)), so as to reduce the inflammation that contributes to the condition. Before treating the patient, a physician can perform an endoscopy or colonoscopy to diagnose a patient with intestinal inflammation, or identify a patient as having intestinal inflammation based on results from an endoscopy or colonoscopy. To treat the patient, a physician of skill in the art can administer to the human patient a neuromodulating agent that decreases M1 macrophage polarization (e.g., an agent that reduces CGRP signaling, such as a CGRP blocking antibodies TEV-48125, AMG 334, and LY2951742). The CGRP blocking antibody can be administered at a dose lower or higher than that administered to a patient with migraine. The CGRP blocking antibody can be and administered parenterally (e.g., by subcutaneous injection or intravenous infusion) to treat intestinal inflammation. The CGRP blocking antibody is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the CGRP blocking antibody is administered bimonthly, once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The CGRP blocking antibody decreases macrophage production of one or more pro-inflammatory cytokines (e.g., IL-12, TNFα, IL-6, IL-8, IL-1β, MCP-1 or CCL2) and/or increases one or more anti-inflammatory cytokines (e.g., IL-10). The CGRP blocking antibody is administered to the patient in an amount sufficient to decrease pro-inflammatory cytokine levels by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more), decrease M1 macrophage polarization, or improve symptoms of intestinal inflammation (e.g., abdominal pain, diarrhea, fever, and fatigue). Cytokine production can be assessed by collecting a blood sample from the patient and evaluating one or more pro-inflammatory cytokines (e.g., IL-12, TNFα, IL-6, IL-8, IL-1β, MCP-1 or CCL2) or anti-inflammatory cytokine IL-10. The blood sample can be collected one day or more after administration of the CGRP blocking antibody (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of the CGRP blocking antibody (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the CGRP blocking antibody). A restoration in intestinal health as evaluated using a colonoscopy, endoscopy or tissue biopsy, reduction in the symptoms of intestinal inflammation (e.g., abdominal pain, diarrhea, fever, and fatigue), a reduction in the markers of intestinal inflammation in a blood sample (e.g., CRP, ESR, calprotectin, or lactoferrin, as compared to levels in a blood sample before treatment), reduced pro-inflammatory cytokine levels, or increased IL-10, Arg1, IDO, PF4, CCL24, or IL4Ralpha indicate that the CGRP blocking antibody reduces inflammation, reduces M1 macrophage polarization, or treats intestinal inflammation.
According to the methods described herein, a physician of skill in the art can treat a patient, such as a human patient with an inflammatory condition (e.g., a wound caused by a burn), so as to reduce the inflammation that contributes to the condition. Before treatment is administered to the patient, the number of peripheral M2 macrophages in a blood sample collected from the patient can be assessed by isolating macrophages using CD14 and detecting IL-10 secretion upon stimulating the isolated macrophages with LPS. To treat the patient, a physician of skill in the art can administer to the human patient a neuromodulating agent that decreases M2 macrophage polarization of burn-resident macrophages (e.g., a beta adrenergic antagonist, such as propanolol, metoprolol, atenolol, bisoprolol, carvedilol, labetalol, nadolol, or acebutolol). The beta adrenergic antagonist can be administered at a dose lower or higher than that administered to a patient with high blood pressure or a cardiac condition. The beta adrenergic antagonist can be formulated in a gel matrix and applied to the surface of the burn. The beta adrenergic antagonist is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the beta adrenergic antagonist is administered bimonthly, once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The beta adrenergic antagonist decreases burn-resident macrophage polarization toward an M2 phenotype and increases burn-resident macrophage polarization toward an M1 phenotype to promote proper control of opportunistic infections in the wound. This phenotype can be detected by an increase in one or more pro-inflammatory cytokines (e.g., IL-12, TNFα, IL-6, IL-8, IL-1β, MCP-1 or CCL2) and/or a decrease in one or more anti-inflammatory cytokines (e.g., IL-10). The beta adrenergic antagonist is administered to the patient in an amount sufficient to increase M1 polarization or decrease M2 polarization by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more as evaluated by changes in cytokine production), or to increase wound healing. Cytokine production can be assessed by collecting a blood sample from the patient and evaluating one or more pro-inflammatory cytokines (e.g., IL-12, TNFα, IL-6, IL-8, IL-1β, MCP-1 or CCL2) or anti-inflammatory cytokine IL-10. The blood sample can be collected one day or more after administration of the beta adrenergic antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The blood sample can be compared to a blood sample collected from the patient prior to administration of the beta adrenergic antagonist (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the beta adrenergic antagonist). The wound can be evaluated by a physician for signs of healing (e.g., initial swelling or new tissue formation). Signs of wound healing, increased pro-inflammatory cytokines, or decreased IL-10 levels indicate that the beta adrenergic antagonist effectively reduces M2 macrophage polarization, increases M1 macrophage polarization, or treats a burn.
CCR7+ immune cells home to sites of inflammation. In the context of autoimmune disease (e.g., multiple sclerosis), this can contribute to pathogenesis.
According to the methods disclosed herein, a physician of skill in the art can treat a patient, such as a human patient with an autoimmune condition (e.g., multiple sclerosis), so as to reduce the inflammatory response that contributes to the condition. To this end, a physician of skill in the art can administer to the human patient a neuromodulating agent that reduces the number of CCR7+ T cells in secondary lymphoid organs (e.g., a dopamine antagonist, such as haloperidol, paliperidone, clozapine, risperidone, olanzapine, quetiapine, ziprasidone, amoxapine, clomipramine, and trimipramine). Reducing the number of CCR7+ T cells in secondary lymphoid organs leads to reduced migration to inflammatory lesions in the spinal cord and thereby reduces disease severity. The dopamine antagonist can be administered at a dose lower or higher than that administered to a patient with a neuropsychiatric disorder, or it can be chemically modified (e.g., PEGylated) or delivered in a particulate formulation (e.g., a nanoparticle or microparticle) so that it does not cross the blood brain barrier. A PEGylated dopamine antagonist (e.g., haloperidol) can be administered systemically (e.g., by subcutaneous or intravenous injection) to treat multiple sclerosis. The dopamine antagonist is administered in a therapeutically effective amount, such as from 10 μg/kg to 500 mg/kg (e.g., 10 μg/kg, 100 μg/kg, 500 μg/kg, 1 mg/kg, 10 mg/kg, 50 mg/kg, 100 mg/kg, 250 mg/kg, or 500 mg/kg). In some embodiments, the dopamine antagonist is administered once a month, once every two weeks, or at least once a week or more (e.g., 1, 2, 3, 4, 5, 6, or 7 times a week or more).
The dopamine antagonist is administered to the patient in an amount sufficient to decrease CCR7+ T cell numbers in secondary lymphoid organs by 10% or more (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or more), or to improve symptoms of multiple sclerosis (e.g., improve the patient's Multiple Sclerosis Severity Score or Expanded Disability Status Scale or reduce the frequency, severity, or duration of relapses in patients with RRMS). CCR7+ T cell numbers can be assessed by collecting a secondary lymphoid organ sample from the patient and evaluating the number of CCR7+ T cells by flow cytometry. The secondary lymphoid organ sample can be collected one day or more after administration of the dopamine antagonist (e.g., 1, 2, 3, 4, 5, 6, 7, 10, 14, 21, or 30 or more days after administration). The secondary lymphoid organ sample can be compared to a secondary lymphoid organ sample collected from the patient prior to administration of the dopamine antagonist (e.g., a blood sample collected earlier the same day, 1 day, 1 week, 2 weeks, one month or more before administration of the dopamine antagonist). The patient's condition can be evaluated using the Multiple Sclerosis Severity Score or Expanded Disability Status Scale, MRI imaging to visualize lesions (e.g., brain or spinal cord lesions) and the frequency, severity, and duration of relapses can be recorded by a neurologist. Improvements in the Multiple Sclerosis Severity Score or Expanded Disability Status Scale, reduced CCR7+ T cell numbers in secondary lymphoid organs or near the spinal cord, or less frequent, less severe, or shorter relapses indicate that the dopamine antagonist reduces inflammation and treats multiple sclerosis. If RRMS symptoms (e.g., neurologic symptoms and lesions observed using MRI) are stable and not worsening, that also demonstrates that dopamine antagonists are an effective treatment for multiple sclerosis.
Various modifications and variations of the described invention will be apparent to those skilled in the art without departing from the scope and spirit of the invention. Although the invention has been described in connection with specific embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the invention that are obvious to those skilled in the art are intended to be within the scope of the invention.
Other embodiments are in the claims.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2017/043802 | 7/25/2017 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 62366773 | Jul 2016 | US |
