Patent Application
20190142739
Due to the location of the retina, the delivery of therapeutic agents to retinal tissue presents a challenge. For instance, eye drops have been considered to be useful primarily in the treatment of anterior segment disorders because drugs delivered in eye drops do not pass the cornea and insufficient drug concentrations reach the posterior ocular tissue. Various ocular diseases and disorders are characterized by death or damage of retinal cells. The ability to deliver therapeutic agents to the retinal tissue in subjects that are suffering from an ocular disease, an ocular disorder or an ocular injury would be desirable.
In some aspects the invention is a topical composition comprising a spherical nucleic acid (SNA) comprising an active agent and a topical carrier. In some embodiments the topical composition is a composition for delivery of therapeutic agents to ocular tissue to treat an ocular disorder or injury. The ocular disorder in some embodiments is a disorder associated with ocular angiogenesis, dry eye, ocular inflammatory conditions, ocular hypertension, and ocular diseases associated with elevated intraocular pressure (IOP), such as glaucoma.
In other aspects the invention is a stable self-assembling nanostructure of a three dimensional structure of self-assembling oligonucleotides, wherein the self-assembling oligonucleotide is a therapeutic oligonucleotide linked to a molecular species at the 3′ or 5′ terminus of the oligonucleotide through a linker moiety, wherein the molecular species is positioned in a core of the nanostructure and the therapeutic oligonucleotide extends radially from the core, and wherein the self-assembling oligonucleotides comprise the entire nanostructure such that no other structural components are part of the nanostructure.
In some embodiments the active agent is a therapeutic nucleic acid, such as an antisense oligonucleotide, siRNA, miRNA, mRNA, non-coding RNA, or aptamer. In other embodiments the therapeutic nucleic acid targets any one or more of the following: tyrosine kinase, endothelial (TEK), complement factor B (CFB), hypoxia-inducible factor 1, a subunit (HIF1A), HtrA serine peptidase 1 (HTRA1), platelet-derived growth factor receptor β (PDGFRB), chemokine, CXC motif, receptor 4 (CXCR4), insulin-like growth factor I receptor (IGF1R), angiopoietin 2 (ANGPT2), v-fos FBJ murine osteosarcoma viral oncogene homolog (FOS), cathepsin L1, transcript variant 1 (CTSL1), cathepsin L1, transcript variant 2 (CTSL2), intracellular adhesion molecule 1 (ICAM1), insulin-like growth factor I (IGF1), integrin α5 (ITGA5), integrin β 1 (ITGB1), nuclear factor kappa-B, subunit 1 (NFKB1), nuclear factor kappa-B, subunit 2 (NFKB2), chemokine, CXC motif, ligand 12 (CXCL12), tumor necrosis factor-alpha-converting enzyme (TACE), tumor necrosis factor receptor 1 (TNFR1), vascular endothelial growth factor (VEGF), vascular endothelial growth factor receptor-1 (VEGFR1), kinase insert domain receptor (KDR), carbonic anhydrase II (CA2), carbonic anhydrase IV (CA4), carbonic anhydrase XII (CA12), β1 andrenergic receptor (ADBR1), β2 andrenergic receptor (ADBR2), acetylcholinesterase (ACHE), Na+/K+-ATPase, solute carrier family 12 (sodium/potassium/chloride transporters), member 1 (SLC12A1), solute carrier family 12 (sodium/potassium/chloride transporters), member 2 (SLC12A2), connective tissue growth factor (CTGF), serum amyloid A (SAA), secreted frizzled-related protein 1 (sFRP1), gremlin (GREM1), lysyl oxidase (LOX), c-Maf, rho-associated coiled-coil-containing protein kinase 1 (ROCK1), rho-associated coiled-coil-containing protein kinase 2 (ROCK2), plasminogen activator inhibitor 1 (PAI-1), endothelial differentiation, sphingolipid G-protein-coupled receptor, 3 (Edg3 R), myocilin (MYOC), NADPH oxidase 4 (NOX4), Protein Kinase C-delta (PKC-delta), Aquaporin 1 (AQP1), Aquaporin 4 (AQP4), members of the complement cascade, ATPase, H+ transporting, lysosomal V1 subunit A (ATP6V1A), gap junction protein α-1 (GJA1), formyl peptide receptor 1 (FPR1), formyl peptide receptor-like 1 (FPRL1), interleukin 8 (IL8), nuclear factor kappa-B, subunit 1 (NFKB1), nuclear factor kappa-B, subunit 2 (NFKB2), presenilin 1 (PSEN1), tumor necrosis factor-alpha-converting enzyme (TACE), transforming growth factor β2 (TGFB2), transient receptor potential cation channel, subfamily V, member 1 (TRPV1), chloride channel 3 (CLCN3), gap junction protein α5 (GJA5), tumor necrosis factor receptor 1 (TNFR1), chitinase 3-like 2 (CHI3L2), tumor necrosis factor receptor superfamily, member 1A (TNFRSF1A), phosphodiesterase 4D, cAMP-specific (PDE4D), histamine receptor H1 (HRH1), spleen tyrosine kinase (SYK), interkeukin 1β (IL1B), nuclear factor kappa-B, subunit 1 (NFKB1), nuclear factor kappa-B, subunit 2 (NFKB2), and tumor necrosis factor-alpha-converting enzyme (TACE). The active agent may be a TNF-α inhibitor such as an antisense oligonucleotide of 18 nucleotides in length. In some embodiments the active agent further comprises a molecular species at the 3′ or 5′ end. In other embodiments the active agent further comprises a molecular species at the 3′ and 5′ end. The molecular species may be selected from the group consisting of a spacer, a lipid, a sterol, cholesterol, stearyl, C16 alkyl chain, bile acids, cholic acid, taurocholic acid, deoxycholate, oleyl litocholic acid, oleoyl cholenic acid, glycolipids, phospholipids, sphingolipids, isoprenoids, such as steroids, vitamins, such as vitamin E, saturated fatty acids, unsaturated fatty acids, fatty acid esters, such as triglycerides, pyrenes, porphyrines, Texaphyrine, adamantane, acridines, biotin, coumarin, fluorescein, rhodamine, Texas-Red, digoxygenin, dimethoxytrityl, t-butyldimethylsilyl, t-butyldiphenylsilyl, cyanine dyes (e.g. Cy3 or Cy5), Hoechst 33258 dye, psoralen, and ibuprofen.
The active agent in some embodiments is an antisense oligonucleotide comprising mUmGmGmGmAmGT*A*G*A*T*G*mAmGmGmUmAmC (SEQ ID NO: 16), wherein the oligonucleotide is 18 nucleotides in length, wherein m is a 2′O methyl, and wherein * is a phosphorothioate modification.
In other embodiments the active agent is an antisense oligonucleotide comprising 5′ TGGGAGTAGATGAGGTAC 3′ (SEQ ID NO: 4), wherein the oligonucleotide is 18-19 nucleotides in length, wherein 4-6 nucleotides at the 5′ end and 4-6 nucleotides at the 3′ end of the oligonucleotide include a 2′O methyl, and wherein 4-10 nucleotides have a phosphorothioate modification. The 6 nucleotides at the 5′ end and 6 nucleotides at the 3′ end of the oligonucleotide include a 2′O methyl in some embodiments. In other embodiments the 6 nucleotides have a phosphorothioate modification. The phosphorothioate modified nucleotides may be in a central region of the oligonucleotide. In other embodiments, the phosphorothioate modified nucleotides are on the 5′-end region of the oligonucleotide. In other embodiments, the phosphorothioate modified nucleotides are on the 3′-end region of the oligonucleotide.
In some embodiments only one nucleotide has a 2′-modified nucleotide. The 2′-modification may be selected from the group of: 2′-deoxy, 2′-deoxy-2′-fluoro, 2′-O-methyl, 2′-O-methoxyethyl (2′-O-MOE), 2′O-aminopropyl (2′-O-AP), 2′-O-dimethylaminoethyl (2′-O-DMAOE), 2′-dimethylaminopropyl (2′-O-DMAP), 2′-O-dimethylaminoethyloxyethyl(2′-O-DMAEOE), and 2′-O—N-methylacetamido (2′-O-NMA).
The SNA in some embodiments comprises a core and wherein the active agent is linked to the exterior of the core. In other embodiments the SNA includes 2-1,000 copies of the antisense oligonucleotide. The active agent may be directly linked to the core or indirectly linked to the core through one or more linkers. In some embodiments the core is a solid or hollow core.
The topical composition includes a topical carrier that may be a standard solution formulation. In some embodiments the standard solution formulation comprises hydroxypropyl methylcellulose, sodium phosphate, sodium chloride, polysorbate 80, disodium EDTA, and benzalkonium chloride. In other embodiments the standard solution formulation comprises 0.5% hydroxypropyl methylcellulose, 0.5% sodium phosphate, 0.75% sodium chloride, 0.05% polysorbate 80, 0.01% disodium EDTA, and 0.01% benzalkonium chloride, pH 7.4.
A method for delivering an active agent to the retina of an eye is provided according to other aspects of the invention. The method involves administering to an eye of a subject a topical composition as described herein in an effective amount to deliver the active agent to the retina of the eye. In some embodiments the active agent is a TNFα inhibitor, platelet-derived growth factor subunit A (PDGFA) inhibitor, platelet-derived growth factor subunit B (PDGFB) inhibitor, platelet-derived growth factor subunit C (PDGFC) inhibitor, platelet-derived growth factor subunit D (PDGFD) inhibitor, platelet-derived growth factor receptor alpha (PDGFRA) inhibitor, platelet-derived growth factor receptor beta (PDGFRB) inhibitor, platelet-derived growth factor receptor like (PDGFRL) inhibitor, vascular endothelial growth factor A (VEGFA) inhibitor, vascular endothelial growth factor B (VEGFB) inhibitor, vascular endothelial growth factor C (VEGFC) inhibitor, vascular endothelial growth factor D (VEGFD) inhibitor, vascular endothelial growth factor receptor-1 (VEGFR1) inhibitor, vascular endothelial growth factor receptor-2 (VEGFR2) inhibitor, vascular endothelial growth factor receptor-3 (VEGFR3) inhibitor, beta-2 adrenergic receptor (ADRB2) inhibitor, connective tissue growth factor (CTGF) inhibitor, interleukin 1 beta (IL1β) inhibitor, interleukin 1 receptor-1 (IL1R1) inhibitor, interleukin 1 receptor-2 (IL1R2) inhibitor, and interleukin 1 receptor-3 (IL1R3) inhibitor. In other embodiments the TNFα inhibitor is a TNFα antisense oligonucleotide.
In some embodiments, the topical composition is administered to the retina. In some embodiments, the active agent is delivered to the back of the eye. In some embodiments, the active agent is delivered to the retina, macula, choroid, sclera, uvea and/or cornea of the eye. In some embodiments, the active agent is delivered to two or more of the retina, macula, choroid, sclera, uvea or cornea of the eye, or any combination thereof. In some embodiments, the active agent is an ocular analgesic agent.
In some embodiments, the subject is a mammal. In some embodiments, the subject is human.
A method for delivering an active agent to the retina of an eye is provided according to other aspects of the invention.
A method for treating an eye disease or disorder is provided according to other aspects of the invention. In some embodiments, the method comprises administering to an eye of a subject any of the topical compositions described herein in an effective amount to treat an eye disease or disorder.
In some embodiments, the eye disorder or disease is associated with ocular angiogenesis, ocular neovascularization, retinal edema, ocular hypertension, elevated intraocular pressure, retinal ischemia, posterior segment neovascularization, age-related macular degeneration, inflammation, macular edema, uveitis, dry eye, neovascular glaucoma, glaucoma, scleritis, diabetic retinopathy, retinitis pigmentosa, optic nerve injury, retinopathy of prematurity, retinal ganglion degeneration, macular degeneration, hereditary optic neuropathy, metabolic optic neuropathy, acute ischemic optic neuropathy, commotio 5 retinae, retinal detachment, retinal tears, retinal holes, iatrogenic retinopathy, myopia, conjunctivitis or eye cancer.
In some embodiments, the subject is a mammal. In some embodiments, the subject is human.
In aspects the invention is a stable self-assembling nanostructure comprising a three dimensional structure of self-assembling oligonucleotides. In some embodiments the self-assembling oligonucleotide is a therapeutic oligonucleotide linked to a molecular species at the 3′ or 5′ terminus of the oligonucleotide through a linker moiety. In some embodiments the molecular species is positioned in a core of the nanostructure and the therapeutic oligonucleotide extends radially from the core. In other embodiments the self-assembling oligonucleotides comprise the entire nanostructure such that no other structural components are part of the nanostructure.
The nanostructure is free of lipids, polymers or solid cores in some embodiments.
In other embodiments the molecular species is linked to the therapeutic oligonucleotide at the 5′ end of the therapeutic oligonucleotide. In some embodiments the molecular species is a hydrophobic group. In embodiments the hydrophobic group is selected from the group consisting of cholesterol, a cholesteryl or modified cholesteryl residue, tocopherol, adamantine, dihydrotesterone, long chain alkyl, long chain alkenyl, long chain alkynyl, olely-lithocholic, cholenic, oleoyl-cholenic, decane, dodecane, docosahexaenoyl, palmityl, C6-palmityl, heptadecyl, myrisityl, arachidyl, stearyl, behenyl, linoleyl, bile acids, cholic acid or taurocholic acid, deoxycholate, oleyl litocholic acid, oleoyl cholenic acid, glycolipids, phospholipids, sphingolipids, isoprenoids, such as steroids, vitamins, such as vitamin E, fatty acids either saturated or unsaturated, fatty acid esters, such as triglycerides, pyrenes, porphyrines, Texaphyrine, adamantane, acridines, biotin, coumarin, fluorescein, rhodamine, Texas-Red, digoxygenin, dimethoxytrityl, t-butyldimethylsilyl, t-butyldiphenylsilyl, cyanine dyes (e.g. Cy3 or Cy5), Hoechst 33258 dye, psoralen, or ibuprofen. In some embodiments the hydrophobic group is cholesterol.
The linker moiety is a non-nucleotidic linker moiety in some embodiments. In some embodiments the linker moiety is selected from the group consisting of an abasic residues (dSpacer), oligoethyleneglycol, triethyleneglycol, hexaethylenegylcol, alkane-diol, or butanediol.
In some embodiments the linker moiety is a double linker. The double linker in some embodiments may be two oligoethyleneglycols such as triethyleneglycol, hexaethylenegylcol or combinations thereof. In other embodiments the double linker is two alkane-diols such as butanediol. In yet other embodiments the double linker is linked in the center by a phosphodiester, phosphorothioate, methylphosphonate, or amide linkage.
In some embodiments the linker moiety is a triple linker. The triple linker in some embodiments may be three oligoethyleneglycols such as triethyleneglycol, hexaethylenegylcol or combinations thereof. In other embodiments triple linker is three alkane-diols such as butanediol. In yet other embodiments the triple linker is linked in between each single linker by a phosphodiester, phosphorothioate, methylphosphonate, or amide linkage. In yet other embodiments the double or triple linker is composed of one or more of oligoethyleneglycols such as triethyleneglycol, hexaethylenegylcol, alkane-diols such as butanediol or combinations thereof.
In some embodiments the therapeutic oligonucleotide is an antisense oligonucleotide, a DNA oligonucleotide, a DNA-RNA hybrid oligonucleotide, or a RNA oligonucleotide such as an siRNA, miRNA, mRNA, non-coding RNA, or aptamer. In some embodiments the therapeutic oligonucleotide is an antisense oligonucleotide. In yet other embodiments the therapeutic oligonucleotide is a gapmer.
In some embodiments the therapeutic oligonucleotide is not a TNFα antisense oligonucleotide.
In other aspects the invention is a method of delivering an oligonucleotide to a subject, by administering to the subject the stable self-assembling nanostructure as described herein in order to deliver the oligonucleotide to the subject.
Each of the limitations of the invention can encompass various embodiments of the invention. It is, therefore, anticipated that each of the limitations of the invention involving any one element or combinations of elements can be included in each aspect of the invention. This invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways.
The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures is represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. In the drawings:
The invention relates, in some aspects, to topical formulations having surprising properties. It was discovered herein that a topical formulation of an active agent in a spherical nucleic acid (SNA) was capable of delivering the active agent to the retina of the eye, in contrast to other types of carriers such as PBS. The ability to deliver an active agent to the retinal tissue has real advantages because it has been difficult to deliver drugs to this region of the eye.
The topical formulations described herein in some embodiments are liquid eye drop formulations. It can be administered using routine methods known in the art, such as with an eye dropper. The topical formulations in some embodiments include one or more of: hydroxypropyl methylcellulose, sodium phosphate, sodium chloride, polysorbate 80, disodium EDTA, and benzalkonium chloride. For instance a preferred topical solution may include 0.5% hydroxypropyl methylcellulose, 0.5% sodium phosphate, 0.75% sodium chloride, 0.05% polysorbate 80, 0.01% disodium EDTA, and 0.01% benzalkonium chloride, pH 7.4.
In other aspects the invention is a nucleic acid formulation which is comprised of a single component and is for delivery of nucleic acids by topical administration or by other routes. The formulation is a stable self-assembling nanostructure. A stable self-assembling nanostructure is made up of a self-assembling oligonucleotide, that as a single component, can spontaneously form a three-dimensional structure that is stable and effective. The stable self-assembling nanostructure is comprised solely of the self-assembling oligonucleotide and does not require the addition of further components to be an effective therapeutic delivery formulation. The self-assembling oligonucleotide is a structure comprised of two to three elements including a therapeutic oligonucleotide and a molecular species, such as a hydrophobic group, which are preferably linked to one another through a linker. The self-assembling oligonucleotide self-associates to form the core of the nanostructure in water or other suitable solvents, such that the molecular species arrange in proximity to one another on the internal region of the nanostructure and the oligonucleotides form the external portion of the nanostructure.
Quite surprisingly, the stable self-assembling nanostructures disclosed herein have been found to comprise an effective delivery formulation for administering therapeutic oligonucleotides to a subject. Numerous publications in the art have attempted to address the problems associated with delivery of nucleic acids to a subject. Many of these publications have proposed formulating the nucleic acids in complex lipid formulations, associated with charged peptides or polymers, or linked to solid structures. The stable self-assembling nanostructure disclosed herein avoids many of the problems associated with these delivery formulations and provides an effective platform for nucleic acid delivery.
The stable self-assembling nanostructures may be used to deliver therapeutic nucleic acids to any body tissue. They may be used alone or further formulated in a carrier such as PBS or a pharmaceutical carrier such as the topical formulations described herein.
In some embodiments the topical formulations of the invention are useful for delivering an active agent to a tissue such as the eye, especially the back of the eye, especially retina, macula, choroid, sclera, uvea and/or cornea of an eye. The active agent may be present in the formulation as a stable self-assembling nanostructure or as another structure such as a free oligonucleotide. Any agent that has a diagnostic or therapeutic utility in the cornea or retina may be an active agent of the invention. For instance, the active agent may be an ocular analgesic agent, an agent for the treatment of Age-related macular degeneration (AMD), inflammation, macular edema, uveitis, dry eye, glaucoma, scleritis, diabetic retinopathy, retinitis pigmentosa, cancers affecting the eye and/or other disorder in an eye or other diseases of the eye.
The ocular disorder in some embodiments is a disorder associated with ocular angiogenesis, dry eye, ocular inflammatory conditions, ocular hypertension, and ocular diseases associated with elevated intraocular pressure (TOP), such as glaucoma. As used herein “ocular angiogenesis,” includes ocular pre-angiogenic conditions and ocular angiogenic conditions, and includes ocular angiogenesis, ocular neovascularization, retinal edema, diabetic retinopathy, sequela associated with retinal ischemia, posterior segment neovascularization (PSNV), and neovascular glaucoma.
Thus, the active agents may be used in a method for treating patients with ocular angiogenesis, ocular neovasularization, retinal edema, diabetic retinopathy, sequela associated with retinal ischemia, posterior segment neovascularization (PSNV), neovascular glaucoma, optic nerve injury, retinopathy of prematurity (ROP) or retinitis pigmentosa (RP), retinal ganglion degeneration, macular degeneration, hereditary optic neuropathy, metabolic optic neuropathy, neuropathy due to a toxic agent or that caused by adverse drug reactions or vitamin deficiency. “Ocular neovascularization” includes age-related macular degeneration, cataract, acute ischemic optic neuropathy (AION), commotio retinae, retinal detachment, retinal tears or holes, iatrogenic retinopathy and other ischemic retinopathies or optic neuropathies, myopia, or retinitis pigmentosa. An “inflammatory condition,” as used herein, refers to conditions such as ocular inflammation and allergic conjunctivitis.
In other aspects the SNAs may be used to deliver a therapeutic oligonucleotide to any tissue in which it is desirable to present the nucleic acid. For instance, it may be desirable to deliver the therapeutic oligonucleotide to the skin, a mucosal membrane, or an internal organ. The stable self-assembling nanostructures described herein are useful for delivering therapeutic oligonucleotides to these tissues for the treatment of disease or for diagnostic purposes.
The invention in some aspects relates to the delivery of an active agent that is a therapeutic nucleic acid. Therapeutic nucleic acids include inhibitory oligonucleotides and oligonucleotides that upregulate expression. In some embodiments the therapeutic nucleic acids specifically downregulate or upregulate the expression of a protein which is useful for being upregulated or downregulated in the eye and in particular in the cornea or retina or other related tissue. In other embodiments the therapeutic nucleic acids specifically downregulate or upregulate the expression of a protein which is useful for being upregulated or downregulated in other tissues. The nucleic acids may be, for instance, a ribozyme, an antisense RNA, an interfering RNA (RNAi) molecule, a small inhibitory RNA (siRNA) molecule, a triple helix forming molecule, DNA or an mRNA. In some embodiments the inhibitory oligonucleotides are TNFα inhibitors, receptor tyrosine kinase (RTK) inhibitors, cyclooxygenase (COX) inhibitors, IL1β inhibitors, beta-2 adrenergic receptor (ADRB2) inhibitors, Connective tissue growth factor (CTGF) inhibitors and vascular endothelial growth factor (VEGF) inhibitors. The inhibitory nucleic acid may target any gene associated with retinal or corneal disorders. Exemplary target genes associated with retinal disorders include tyrosine kinase, endothelial (TEK); complement factor B (CFB); hypoxia-inducible factor 1α subunit (HIF1A); HtrA serine peptidase 1 (HTRA1); platelet-derived growth factor receptor β (PDGFRB); chemokine, CXC motif, receptor 4 (CXCR4); insulin-like growth factor I receptor (IGF1R); angiopoietin 2 (ANGPT2); v-fos FBJ murine osteosarcoma viral oncogene homolog (FOS); cathepsin L1, transcript variant 1 (CTSL1); cathepsin L1, transcript variant 2 (CTSL2); intracellular adhesion molecule 1 (ICAM1); insulin-like growth factor I (IGF1); integrin α 5 (ITGA5); integrin β1 (ITGB1); nuclear factor kappa-B, subunit 1 (NFKB1); nuclear factor kappa-B, subunit 2 (NFKB2); chemokine, CXC motif, ligand 12 (CXCL12); tumor necrosis factor-alpha-converting enzyme (TACE); tumor necrosis factor receptor 1 (TNFR1); vascular endothelial growth factor (VEGF); vascular endothelial growth factor receptor-1 (VEGFR1); and kinase insert domain receptor (KDR).
Examples of target genes associated with glaucoma include carbonic anhydrase II (CA2); carbonic anhydrase IV (CA4); carbonic anhydrase XII (CA12); β1 andrenergic receptor (ADBR1); β2 andrenergic receptor (ADBR2); acetylcholinesterase (ACHE); Na+/K+-ATPase; solute carrier family 12 (sodium/potassium/chloride transporters), member 1 (SLC12A1); solute carrier family 12 (sodium/potassium/chloride transporters), member 2 (SLC12A2); connective tissue growth factor (CTGF); serum amyloid A (SAA); secreted frizzled-related protein 1 (sFRP1); gremlin (GREM1); lysyl oxidase (LOX); c-Maf; rho-associated coiled-coil-containing protein kinase 1 (ROCK1); rho-associated coiled-coil-containing protein kinase 2 (ROCK2); plasminogen activator inhibitor 1 (PAI-1); endothelial differentiation, sphingolipid G-protein-coupled receptor, 3 (Edg3 R); myocilin (MYOC); NADPH oxidase 4 (NOX4); Protein Kinase C-delta (PKC-delta); Aquaporin 1 (AQP1); Aquaporin 4 (AQP4); members of the complement cascade; ATPase, H+ transporting, lysosomal V1 subunit A (ATP6V1A); gap junction protein α −1 (GJA1); formyl peptide receptor 1 (FPR1); formyl peptide receptor-like 1 (FPRL1); interleukin 8 (IL8); nuclear factor kappa-B, subunit 1 (NFKB1); nuclear factor kappa-B, subunit 2 (NFKB2); presenilin 1 (PSEN1); tumor necrosis factor-alpha-converting enzyme (TACE); transforming growth factor β2 (TGFB2); transient receptor potential cation channel, subfamily V, member 1 (TRPV1); chloride channel 3 (CLCN3); gap junction protein α 5 (GJA5); tumor necrosis factor receptor 1 (TNFR1); and chitinase 3-like 2 (CHI3L2).
Examples of target genes associated with ocular inflammation include tumor necrosis factor receptor superfamily, member 1A (TNFRSF1A); phosphodiesterase 4D, cAMP-specific (PDE4D); histamine receptor H1 (HRH1); spleen tyrosine kinase (SYK); interkeukin 1β (IL1B); nuclear factor kappa-B, subunit 1 (NFKB1); nuclear factor kappa-B, subunit 2 (NFKB2); and tumor necrosis factor-alpha-converting enzyme (TACE).
A TNFα inhibitor is a composition for reducing TNFα levels. Highly effective TNFα inhibitors have been identified according to aspects of the invention. The TNFα inhibitors are nucleic acid based antisense compositions. The term “TNF-alpha” or “TNFα” refers to a cytokine that exists as a 17 kD secreted form and a 26 kD membrane associated form, the biologically active form of which is composed of a trimer of noncovalently bound 17 kD molecules.
A “TNFα inhibitor” as used herein refers to a nucleic acid based agent which interferes with TNFα activity. In particular, the TNFα antisense inhibitors or TNFα antisense oligonucleotides of the invention reduce the expression of the TNFα gene.
The inhibitors of the invention may be antisense nucleic acids. Antisense nucleic acids typically include modified or unmodified RNA, DNA, or mixed polymer nucleic acids, and primarily function by specifically binding to matching sequences resulting in modulation of peptide synthesis. Antisense nucleic acids bind to target RNA by Watson Crick base-pairing and block gene expression by preventing ribosomal translation of the bound sequences either by steric blocking or by activating RNase H enzyme. Antisense molecules may also alter protein synthesis by interfering with RNA processing or transport from the nucleus into the cytoplasm.
As used herein, the term “antisense nucleic acid” or “antisense oligonucleotide” describes a nucleic acid that hybridizes under physiological conditions to DNA comprising a particular gene or to an mRNA transcript of that gene, for instance, TNFα and, thereby, inhibits the transcription of that gene and/or the translation of that mRNA. The antisense molecules are designed so as to interfere with transcription or translation of a target gene upon hybridization with the target gene or transcript. Those skilled in the art will recognize that the exact length of the antisense oligonucleotide and its degree of complementarity with its target will depend upon the specific target selected, including the sequence of the target and the particular bases which comprise that sequence.
“Inhibition of gene expression” refers to the absence or observable decrease in the level of protein and/or mRNA product from a target gene, such as the TNFα gene. “Specificity” refers to the ability to inhibit the target gene without manifest effects on other genes of the cell. The consequences of inhibition can be confirmed by examination of the outward properties of the cell or organism or by biochemical techniques such as RNA solution hybridization, nuclease protection, Northern hybridization, reverse transcription, gene expression monitoring with a microarray, antibody binding, enzyme linked immunosorbent assay (ELISA), Western blotting, radioimmunoassay (RIA), other immunoassays, and fluorescence activated cell analysis (FACS).
The antisense oligonucleotides of the invention inhibit target gene, such as TNFα, expression. Depending on the assay, quantitation of the amount of gene expression allows one to determine a degree of inhibition which is greater than 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% as compared to a cell not treated according to the present invention. As an example, the efficiency of inhibition may be determined by assessing the amount of gene product in the cell.
In some instances the inhibitor is a TNFα inhibitor which is an antisense compound having any of the sequences described herein or bioequivalents including salts and prodrugs thereof.
The term bioequivalent compounds, including pharmaceutically acceptable salts and prodrugs as used herein refers to antisense oligonucleotides having the same primary structure as the antisense oligonucleotide of interest, but including salt forms or structures which can be cleaved or modified to have the same type of biological effect as the antisense oligonucleotide of interest. This is intended to encompass any pharmaceutically acceptable salts, esters, or salts of such esters, or any other compound which, upon administration to an animal including a human, is capable of providing (directly or indirectly) the biologically active metabolite or residue thereof.
“Pharmaceutically acceptable salts” are physiologically and pharmaceutically acceptable salts of the nucleic acids of the invention: i.e., salts that retain the desired biological activity of the compound of interest and do not impart undesired toxicological effects thereto. Pharmaceutically acceptable salts include but are not limited to (a) salts formed with cations such as sodium, potassium, ammonium, magnesium, calcium, polyamines such as spermine and spermidine, etc.; (b) acid addition salts formed with inorganic acids, for example hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid and the like; (c) salts formed with organic acids such as, for example, acetic acid, oxalic acid, tartaric acid, succinic acid, maleic acid, fumaric acid, gluconic acid, citric acid, malic acid, ascorbic acid, benzoic acid, tannic acid, palmitic acid, alginic acid, polyglutamic acid, naphthalenesulfonic acid, methanesulfonic acid, p-toluenesulfonic acid, naphthalenedisulfonic acid, polygalacturonic acid, and the like; and (d) salts formed from elemental anions such as chlorine, bromine, and iodine.
The compounds of the invention may also be prepared to be delivered in a “prodrug” form. A “prodrug” is a therapeutic agent that is prepared in an inactive form that is converted to an active form (i.e., drug) within the body or cells thereof by the action of endogenous enzymes or other chemicals and/or conditions.
An antisense oligonucleotide refers to a compound having a sequence of nucleotide bases and a subunit-to-subunit backbone that allows the antisense oligonucleotide to hybridize to a target sequence typically by Watson-Crick base pairing, to form an RNA:oligomer heteroduplex within the target sequence. The specific hybridization of an antisense oligonucleotide with its target nucleic acid interferes with the normal function of the nucleic acid target. This modulation of function of a target nucleic acid by compounds which specifically hybridize to it is generally referred to as “antisense”. The functions of DNA to be interfered with include replication and transcription. The functions of RNA to be interfered with include all vital functions such as, for example, translocation of the RNA to the site of protein translation, translation of protein from the RNA, splicing of the RNA to yield one or more mRNA species, and catalytic activity which may be engaged in or facilitated by the RNA. The overall effect of such interference with target nucleic acid function is modulation of the expression of the target protein. In the context of the present invention, “modulation” means a decrease or inhibition in the expression of a gene. In some embodiments the antisense oligonucleotides of the invention are TNFα antisense oligonucleotides.
An antisense oligonucleotide “specifically hybridizes” to a target polynucleotide if the oligonucleotide hybridizes to the target under physiological conditions, with a thermal melting point (Tm) substantially greater than 37° C., preferably at least 45° C., and typically 50° C.−80° C. or higher. Such hybridization preferably corresponds to stringent hybridization conditions, selected to be about 10° C., and preferably about 50° C. lower than the Tm for the specific sequence at a defined ionic strength and pH. At a given ionic strength and pH, the Tm is the temperature at which 50% of a target sequence hybridizes to a complementary polynucleotide.
Polynucleotides are described as “complementary” to one another when hybridization occurs in an antiparallel configuration between two single-stranded polynucleotides. A double-stranded polynucleotide can be “complementary” to another polynucleotide, if hybridization can occur between one of the strands of the first polynucleotide and the second. Complementarity (the degree that one polynucleotide is complementary with another) is quantifiable in terms of the proportion of bases in opposing strands that are expected to form hydrogen bonds with each other, according to generally accepted base-pairing rules. An antisense compound may be complementary to a target region of a target transcript even if the two bases sequences are not 100% complementary, as long as the heteroduplex structure formed between the compound and transcript has the desired Tm stability.
Identifying an antisense oligonucleotide that targets a particular nucleic acid may be a multistep process. The process usually begins with the identification of a nucleic acid sequence whose function is to be modulated. This may be, for example, a cellular gene (or mRNA transcribed from the gene) whose expression is associated with a particular disorder or disease state such as a TNFα disorder. The targeting process also includes determination of a site or sites within, for instance, this TNFα gene for the antisense interaction to occur such that the desired effect, e.g., detection or modulation of expression of the protein, will result. Within the context of the present invention, a preferred intragenic site for the TNFα gene is the region encompassing the nucleotide sequence 2283-2300 of SEQ ID NO: 34, ie. gtacctca tctactccca (SEQ ID NO: 35).
In some embodiments, preferred antisense oligonucleotides are designed to target human TNFα, platelet-derived growth factor subunit A (PDGFA), platelet-derived growth factor subunit B (PDGFB), platelet-derived growth factor subunit C (PDGFC), platelet-derived growth factor subunit D (PDGFD), platelet-derived growth factor receptor alpha (PDGFRA), platelet-derived growth factor receptor beta (PDGFRB), platelet-derived growth factor receptor like (PDGFRL), pascular endothelial growth factor A (VEGFA), vascular endothelial growth factor B (VEGFB), vascular endothelial growth factor C (VEGFC), vascular endothelial growth factor D (VEGFD), vascular endothelial growth factor receptor-1 (VEGFR1), vascular endothelial growth factor receptor-2 (VEGFR2), vascular endothelial growth factor receptor-3 (VEGFR3), beta-2 adrenergic receptor, connective tissue growth factor (CTGF), interleukin 1 beta (ILβ); interleukin 1 receptor-1 (IL1R1), interleukin 1 receptor-2 (IL1R2), and interleukin 1 receptor-3 (IL1R3).
The nucleic acid sequences for mRNA for each of these is presented herein. For instance, the nucleotide sequence of SEQ ID NO: 34, set forth below is the human TNF-α cDNA sequence published by Nedwin, G. E. et al. (Nucleic Acids Res. 1985, 13, 6361-6373); and disclosed in Genbank accession number X02910. Other examplary accession numbers and sequences are listed in Table 1 and provided in the accompanying sequence listing and in
The spherical nucleic acids (SNAs) described herein may be stable self-assembling nanostructures. For instance the nanostructure may be an antisense oligonucleotide of 18-19 nucleotides in length comprising TGGGAGTAGATGAGGTAC (SEQ ID NO: 4), wherein a hydrophobic group at the 3′ or 5′ terminus self-associates to form the core of the nanostructure in water or other suitable solvents. A hydrophobic group as used herein may include cholesterol, a cholesteryl or modified cholesteryl residue, tocopherol, adamantine, dihydrotesterone, long chain alkyl, long chain alkenyl, long chain alkynyl, olely-lithocholic, cholenic, oleoyl-cholenic, decane, dodecane, docosahexaenoyl, palmityl, C6-palmityl, heptadecyl, myrisityl, arachidyl, stearyl, behenyl, linoleyl, bile acids, cholic acid or taurocholic acid, deoxycholate, oleyl litocholic acid, oleoyl cholenic acid, glycolipids, phospholipids, sphingolipids, isoprenoids, such as steroids, vitamins, such as vitamin E, fatty acids either saturated or unsaturated, fatty acid esters, such as triglycerides, pyrenes, porphyrines, Texaphyrine, adamantane, acridines, biotin, coumarin, fluorescein, rhodamine, Texas-Red, digoxygenin, dimethoxytrityl, t-butyldimethylsilyl, t-butyldiphenylsilyl, cyanine dyes (e.g. Cy3 or Cy5), Hoechst 33258 dye, psoralen, or ibuprofen.
The antisense oligonucleotides typically have a length of 15-20 bases, which is generally long enough to have one complementary sequence in the mammalian genome. Additionally, antisense compounds having a length of at least 12, typically at least 15 nucleotides in length hybridize well with their target mRNA. Thus, the antisense oligonucleotides of the invention are typically in a size range of 8-100 nucleotides, more preferably 12-50 nucleotides in length. In some embodiments of the invention the antisense oligonucleotides are of 18-19 nucleotides in length and comprise TGGGAGTAGATGAGGTAC (SEQ ID NO: 4). Antisense oligonucleotides that comprise SEQ ID NO: 4 may include further nucleotides on the 5′ and/or 3′ end of the oligonucleotide. However an antisense oligonucleotide that comprises SEQ ID NO: 4 and is limited to 18 nucleotides in length does not have any additional nucleotides on the 5′ or 3′ end of the molecule. Other non-nucleotide molecules may be linked covalently or non-covalently to the 5′ and/or 3′ end of the those oligonucleotides.
In some instances, the antisense oligonucleotide is one of the following oligonucleotides: T-G-G-G-A-G-T-A-G-A-T-G-A-G-G-T-A-C (SEQ ID NO: 4), mUmGmGmGmAmGmUmAmGmAmUmGmAmGmGmUmAmC (SEQ ID NO: 10, Oligo 3742), T*G*G*G*A*G*T*A*G*A*T*G*A*G*G*T*A*C (SEQ ID NO: 9, Oligo 3500), mUmGmGmGmAmGT*A*G*A*T*G*mAmGmGmUmAmC (SEQ ID NO: 16, Oligo 3534), and mU*mG*mG*mG*mA*mG*T*A*G*A*T*G*mA*mG*mG*mU*mA*mC (SEQ ID NO: 18, Oligo 3509) wherein—refers to a phosphodiester bond, * refers to a phosphorothioate bond, and m refers to an O methyl.
The terms “nucleic acid” and “oligonucleotide” are used interchangeably to mean multiple nucleotides (i.e., molecules comprising a sugar (e.g., ribose or deoxyribose) linked to a phosphate group and to an exchangeable organic base, which is either a substituted pyrimidine (e.g., cytosine (C), thymine (T) or uracil (U)) or a substituted purine (e.g., adenine (A) or guanine (G)). As used herein, the terms “nucleic acid” and “oligonucleotide” refer to oligoribonucleotides as well as oligodeoxyribonucleotides. The terms “nucleic acid” and “oligonucleotide” shall also include polynucleosides (i.e., a polynucleotide minus the phosphate) and any other organic base containing polymer. Nucleic acid molecules are preferably synthetic (e.g., produced by nucleic acid synthesis). The oligonucleotides may be any size useful for producing antisense effects. In some embodiments they are 18-23 nucleotides in length. In other embodiments the antisense oligonucleotide is 18 nucleotides in length.
The terms “nucleic acid” and “oligonucleotide” may also encompass nucleic acids or oligonucleotides with substitutions or modifications, such as in the bases and/or sugars. For example, they include nucleic acids having backbone sugars that are covalently attached to low molecular weight organic groups other than a hydroxyl group at the 2′ position and other than a phosphate group or hydroxy group at the 5′ position. Thus modified nucleic acids may include a 2′-O-alkylated ribose group. In addition, modified nucleic acids may include sugars such as arabinose or 2′-fluoroarabinose instead of ribose. Thus the nucleic acids may be heterogeneous in backbone composition thereby containing any possible combination of polymer units linked together such as peptide-nucleic acids (which have an amino acid backbone with nucleic acid bases). Other examples are described in more detail below.
The oligonucleotides may be DNA, RNA, PNA, LNA, ENA or hybrids including any chemical or natural modification thereof. Chemical and natural modifications are well known in the art. Such modifications include, for example, modifications designed to increase binding to a target strand (i.e., increase their melting temperatures), to assist in identification of the oligonucleotide or an oligonucleotide-target complex, to increase cell penetration, to stabilize against nucleases and other enzymes that degrade or interfere with the structure or activity of the oligonucleotides, to provide a mode of disruption (a terminating event) once sequence-specifically bound to a target, and to improve the pharmacokinetic properties of the oligonucleotide.
Modifications include, but are not limited to, for example, (a) end modifications, e.g., 5′ end modifications (phosphorylation dephosphorylation, conjugation, inverted linkages, etc.), 3′ end modifications (conjugation, DNA nucleotides, inverted linkages, etc.), (b) base modifications, e.g., replacement with modified bases, stabilizing bases, destabilizing bases, or bases that base pair with an expanded repertoire of partners, or conjugated bases, (c) sugar modifications (e.g., at the 2′ position or 4′ position) or replacement of the sugar, as well as (d) internucleoside linkage modifications, including modification or replacement of the phosphodiester linkages. To the extent that such modifications interfere with translation (i.e., results in a reduction of 50%, 60%, 70%, 80%, or 90% or more in translation relative to the lack of the modification—e.g., in an in vitro translation assay), the modification may not be optimal for the methods and compositions described herein.
Non-limiting examples of modified internucleoside linkages include phosphorothioates, chiral phosphorothioates, phosphorodithioates, phosphotriesters, aminoalkylphosphotriesters, methyl and other alkyl phosphonates including 3′-alkylene phosphonates and chiral phosphonates, phosphinates, phosphoramidates including 3′-amino phosphoramidate and aminoalkylphosphoramidates, thionophosphoramidates, thionoalkylphosphonates, thionoalkylphosphotriesters, and boranophosphates having normal 3′-5′ linkages, 2′-5′ linked analogs of these, and those having inverted polarity wherein the adjacent pairs of nucleoside units are linked 3′-5′ to 5′-3′ or 2′-5′ to 5′-2′. Various salts, mixed salts and free acid forms are also included.
Modified internucleoside linkages that do not include a phosphorus atom therein have internucleoside linkages that are formed by short chain alkyl or cycloalkyl internucleoside linkages, mixed heteroatoms and alkyl or cycloalkyl internucleoside linkages, or one or more short chain heteroatomic or heterocyclic internucleoside linkages. These include those having morpholino linkages (formed in part from the sugar portion of a nucleoside); siloxane backbones; sulfide, sulfoxide and sulfone backbones; formacetyl and thioformacetyl backbones; methylene formacetyl and thioformacetyl backbones; alkene containing backbones; sulfamate backbones; methyleneimino and methylenehydrazino backbones; sulfonate and sulfonamide backbones; amide backbones; and others having mixed N, O, S and CH2 component parts.
Substituted sugar moieties include, but are not limited to one of the following at the 2′ position: H (deoxyribose); OH (ribose); F; 0-, S-, or N-alkyl; 0-, S-, or N-alkenyl; 0-, S- or N-alkynyl; or O-alkyl-O-alkyl, wherein the alkyl, alkenyl and alkynyl can be substituted or unsubstituted C1 to C10 alkyl or C2 to C1O alkenyl and alkynyl.
A chemically or naturally modified oligonucleotide may include, for example, at least one nucleotide modified at the 2′ position of the sugar, most preferably a 2′-O-alkyl, 2′-O-alkyl-O-alkyl or 2′-fluoro-modified nucleotide or an end cap. In other embodiments, RNA modifications include 2′-fluoro, 2′-amino and 2′ O-methyl modifications on the ribose of pyrimidines, abasic residues or an inverted base at the 3′ end of the RNA.
The oligonucleotides useful according to the invention may include a single modified nucleoside. In other embodiments the oligonucleotide may include at least two modified nucleosides, at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9, at least 10, at least 15, at least 20 or more nucleosides, up to the entire length of the oligonucleotide.
Nucleosides or nucleobases include the natural purine bases adenine (A) and guanine (G), and the pyrimidine bases thymine (T), cytosine (C) and uracil (U). Modified nucleosides include other synthetic and natural nucleobases such as inosine, xanthine, hypoxanthine, nubularine, isoguanisine, tubercidine, 2-(halo)adenine, 2-(alkyl)adenine, 2-(propyl)adenine, 2 (amino)adenine, 2-(aminoalkyll)adenine, 2 (aminopropyl)adenine, 2 (methylthio) N6 (isopentenyl)adenine, 6 (alkyl)adenine, 6 (methyl)adenine, 7 (deaza)adenine, 8 (alkenyl)adenine, 8-(alkyl)adenine, 8 (alkynyl)adenine, 8 (amino)adenine, 8-(halo)adenine, 8-(hydroxyl)adenine, 8 (thioalkyl) adenine, 8-(thiol)adenine, N6-(isopentyl)adenine, N6 (methyl)adenine, N6, N6 (dimethyl)adenine, 2-(alkyl)guanine, 2 (propyl)guanine, 6-(alkyl)guanine, 6 (methyl)guanine, 7 (alkyl)guanine, 7 (methyl)guanine, 7 (deaza)guanine, 8 (alkyl)guanine, 8-(alkenyl)guanine, 8 (alkynyl)guanine, 8-(amino)guanine, 8 (halo)guanine, 8-(hydroxyl)guanine, 8 (thioalkyl)guanine, 8-(thiol)guanine, N (methyl)guanine, 2-(thio)cytosine, 3 (deaza) 5 (aza)cytosine, 3-(alkyl)cytosine, 3 (methyl)cytosine, 5-(alkyl)cytosine, 5-(alkynyl)cytosine, 5 (halo)cytosine, 5 (methyl)cytosine, 5 (propynyl)cytosine, 5 (propynyl)cytosine, 5 (trifluoromethyl)cytosine, 6-(azo)cytosine, N4 (acetyl)cytosine, 3 (3 amino-3 carboxypropyl)uracil, 2-(thio)uracil, 5 (methyl) 2 (thio)uracil, 5 (methylaminomethyl)-2 (thio)uracil, 4-(thio)uracil, 5 (methyl) 4 (thio)uracil, 5 (methylaminomethyl)-4 (thio)uracil, 5 (methyl) 2,4 (dithio)uracil, 5 (methylaminomethyl)-2,4 (dithio)uracil, 5 (2-aminopropyl)uracil, 5-(alkyl)uracil, 5-(alkynyl)uracil, 5-(allylamino)uracil, 5 (aminoallyl)uracil, 5 (aminoalkyl)uracil, 5 (guanidiniumalkyl)uracil, 5 (1,3-diazole-1-alkyl)uracil, 5-(cyanoalkyl)uracil, 5-(dialkylaminoalkyl)uracil, 5 (dimethylaminoalkyl)uracil, 5-(halo)uracil, 5-(methoxy)uracil, uracil-5 oxyacetic acid, 5 (methoxycarbonylmethyl)-2-(thio)uracil, 5 (methoxycarbonyl-methyl)uracil, 5 (propynyl)uracil, 5 (propynyl)uracil, 5 (trifluoromethyl)uracil, 6 (azo)uracil, dihydrouracil, N3 (methyl)uracil, 5-uracil (i.e., pseudouracil), 2 (thio)pseudouracil, 4 (thio)pseudouracil, 2,4-(dithio)psuedouracil, 5-(alkyl)pseudouracil, 5-(methyl)pseudouracil, 5-(alkyl)-2-(thio)pseudouracil, 5-(methyl)-2-(thio)pseudouracil, 5-(alkyl)-4 (thio)pseudouracil, 5-(methyl)-4 (thio)pseudouracil, 5-(alkyl)-2,4 (dithio)pseudouracil, 5-(methyl)-2,4 (dithio)pseudouracil, 1 substituted pseudouracil, 1 substituted 2(thio)-pseudouracil, 1 substituted 4 (thio)pseudouracil, 1 substituted 2,4-(dithio)pseudouracil, 1 (aminocarbonylethylenyl)-pseudouracil, 1 (aminocarbonylethylenyl)-2(thio)-pseudouracil, 1 (aminocarbonylethylenyl)-4 (thio)pseudouracil, 1 aminocarbonylethylenyl)-2,4-(dithio)pseudouracil, 1 (arninoalkylarninocarbonylethylenyl)-pseudouracil, 1 (arninoalkylarnino-carbonylethylenyl)-2(thio)-pseudouracil, 1(arninoalkylarninocarbonylethylenyl)-4 (thio)pseudouracil, 1 (arninoalkylarninocarbonylethylenyl)-2,4-(dithio)pseudouracil, 1,3-(diaza)-2-(oxo)-phenoxazin-1-yl, 1-(aza)-2-(thio)-3-(aza)-phenoxazin-1-yl, 1,3-(diaza)-2-(oxo)-phenthiazin-1-yl, 1-(aza)-2-(thio)-3-(aza)-phenthiazin-1-yl, 7-substituted 1,3-(diaza)-2-(oxo)-phenoxazin-1-yl, 7-substituted 1-(aza)-2-(thio)-3-(aza)-phenoxazin-1-yl, 7-substituted 1,3-(diaza)-2-(oxo)-phenthiazin-1-yl, 7-substituted 1-(aza)-2-(thio)-3-(aza)-phenthiazin-1-yl, 7-(arninoalkylhydroxy)-1,3-(diaza)-2-(oxo)-phenoxazin-1-yl, 7-(arninoalkylhydroxy)-1-(aza)-2-(thio)-3-(aza)-phenoxazin-1-yl, 7-(aminoalkylhydroxy)-1,3-(diaza)-2-(oxo)-phenthiazin-1-yl, 7-(arninoalkylhydroxy)-1-(aza)-2-(thio)-3-(aza)-phenthiazin-1-yl, 7-(guanidiniumalkylhydroxy)-1,3-(diaza)-2-(oxo)-phenoxazin-1-yl, 7-(guanidiniumalkylhydroxy)-1-(aza)-2-(thio)-3-(aza)-phenoxazin-1-yl, 7-(guanidiniumalkyl-hydroxy)-1,3-(diaza)-2-(oxo)-phenthiazin-1-yl, 7-(guanidiniumalkylhydroxy)-1-(aza)-2-(thio)-3-(aza)-phenthiazin-1-yl, 1,3,5-(triaza)-2,6-(dioxa)-naphthalene, inosine, xanthine, hypoxanthine, nubularine, tubercidine, isoguanisine, inosinyl, 2-aza-inosinyl, 7-deaza-inosinyl, nitroimidazolyl, nitropyrazolyl, nitrobenzimidazolyl, nitroindazolyl, aminoindolyl, pyrrolopyrimidinyl, 3-(methyl)isocarbostyrilyl, 5-(methyl)isocarbostyrilyl, 3-(methyl)-7-(propynyl)isocarbostyrilyl, 7-(aza)indolyl, 6-(methyl)-7-(aza)indolyl, imidizopyridinyl, 9-(methyl)-imidizopyridinyl, pyrrolopyrizinyl, isocarbostyrilyl, 7-(propynyl)isocarbostyrilyl, propynyl-7-(aza)indolyl, 2,4,5-(trimethyl)phenyl, 4-(methyl)indolyl, 4,6-(dimethyl)indolyl, phenyl, napthalenyl, anthracenyl, phenanthracenyl, pyrenyl, stilbenyl, tetracenyl, pentacenyl, diiluorotolyl, 4-(iluoro)-6-(methyl)benzimidazole, 4-(methyl)benzimidazole, 6-(azo)thymine, 2-pyridinone, 5 nitroindole, 3 nitropyrrole, 6-(aza)pyrimidine, 2 (amino)purine, 2,6-(diamino) purine, 5 substituted pyrimidines, N2-substituted purines, N6-substituted purines, 06-substituted purines, substituted 1,2,4-triazoles, pyrrolo-pyrimidin-2-on-3-yl, 6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, para-substituted-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, ortho-substituted-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, bis-ortho-substituted-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, para-(aminoalkylhydroxy)-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, ortho-(aminoalkylhydroxy)-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, bis-ortho-(aminoalkylhydroxy)-6-phenyl-pyrrolo-pyrimidin-2-on-3-yl, pyridopyrimidin-3-yl, 2-oxo-7-amino-pyridopyrimidin-3-yl, 2-oxo-pyridopyrimidine-3-yl, or any O-alkylated or N-alkylated derivatives thereof.
The antisense oligonucleotides of the invention may be chimeric oligonucleotides. Chimeric antisense compounds of the invention may be formed as composite structures of two or more oligonucleotides, modified oligonucleotides, oligonucleotides and/or oligonucleotide mimetics as described above. Such compounds have also been referred to in the art as hybrids or gapmers. In particular a gapmer is an oligonucleotide that has at least three discrete portions, two of which are similar i.e. include one or more backbone modifications, and surround a region that is distinct, i.e., does not include backbone modifications.
In some embodiments, the backbone of the antisense oligonucleotide is modified. In some embodiments, the backbone of the antisense oligonucleotide has a phosphorothioate modification. The backbone of the antisense oligonucleotide may have other modifications apparent to one of ordinary skill in the art.
The compositions of SNAs, in some aspects, may be stable self-assembling nanostructures. In some embodiments the composition is a stable self-assembling nanostructure which is comprised of a single component, which is sometimes referred to herein as a self-assembling oligonucleotide. The self-assembling oligonucleotide is a therapeutic oligonucleotide wherein a molecular species, such as a hydrophobic group, is linked, either directly or indirectly, to the 3′ or 5′ terminus of the oligonucleotide. The self-assembling oligonucleotide self-associates to form the core of the nanostructure in water or other suitable solvents, such that the molecular species arrange in proximity to one another on the internal region of the nanostructure and the oligonucleotides form the external portion of the nanostructure. The nanostructure is composed of the self-assembling oligonucleotide, without any other structural components of the nanostructure. In other words the self-assembling nanostructure does not include as part of the nanostructure other components such as lipids, polymers or solid cores which are not part of the self-assembling oligonucleotide.
The oligonucleotides may include a molecular species at one or both ends, i.e., at the 3′ and/or 5′ end. A molecular species as used herein refers to any compound that is not a naturally occurring or non-naturally occurring nucleotide. Molecular species include but are not limited to a hydrophobic group, a spacer, a lipid, a sterol, lipid moieties such as a cholesterol moiety, cholic acid, a thioether, e.g., hexyl-S-tritylthiol, a thiocholesterol, an aliphatic chain, e.g., dodecandiol or undecyl residues, a phospholipid, e.g., di-hexadecyl-rac-glycerol or triethylammonium 1,2-di-O-hexadecyl-rac-glycero-3-H-phosphonate, a polyamine or a polyethylene glycol chain, or adamantane acetic acid, a palmityl moiety, an octadecylamine or hexylamino-carbonyl-oxycholesterol moiety, stearyl, C16 alkyl chain, bile acids, cholic acid, taurocholic acid, deoxycholate, oleyl litocholic acid, oleoyl cholenic acid, glycolipids, phospholipids, sphingolipids, isoprenoids, such as steroids, vitamins, such as vitamin E, saturated fatty acids, unsaturated fatty acids, fatty acid esters, such as triglycerides, pyrenes, porphyrines, Texaphyrine, adamantane, acridines, biotin, coumarin, fluorescein, rhodamine, Texas-Red, digoxygenin, dimethoxytrityl, t-butyldimethylsilyl, t-butyldiphenylsilyl, cyanine dyes (e.g. Cy3 or Cy576), Hoechst 33258 dye, psoralen, or ibuprofen.
A hydrophobic group as used herein may include cholesterol, a cholesteryl or modified cholesteryl residue, tocopherol, adamantine, dihydrotesterone, long chain alkyl, long chain alkenyl, long chain alkynyl, olely-lithocholic, cholenic, oleoyl-cholenic, decane, dodecane, docosahexaenoyl, palmityl, C6-palmityl, heptadecyl, myrisityl, arachidyl, stearyl, behenyl, linoleyl, bile acids, cholic acid or taurocholic acid, deoxycholate, oleyl litocholic acid, oleoyl cholenic acid, glycolipids, phospholipids, sphingolipids, isoprenoids, such as steroids, vitamins, such as vitamin E, fatty acids either saturated or unsaturated, fatty acid esters, such as triglycerides, pyrenes, porphyrines, Texaphyrine, adamantane, acridines, biotin, coumarin, fluorescein, rhodamine, Texas-Red, digoxygenin, dimethoxytrityl, t-butyldimethylsilyl, t-butyldiphenylsilyl, cyanine dyes (e.g. Cy3 or Cy5), Hoechst 33258 dye, psoralen, or ibuprofen.
The molecular species may be attached at various positions of the oligonucleotide. As described above, the molecular species may be linked to the 3′-end or 5′-end of the oligonucleotide, where it also serves the purpose to enhance the stability of the oligomer against 3′- or 5′-exonucleases. Alternatively, it may be linked to an internal nucleotide or a nucleotide on a branch. The molecular species may be attached to a 2′-position of the nucleotide. The molecular species may also be linked to the heterocyclic base of the nucleotide.
The molecular species may be connected to the oligonucleotide by a linker moiety. Optionally the linker moiety is a non-nucleotidic linker moiety. Non-nucleotidic linkers are e.g. abasic residues (dSpacer), oligoethyleneglycol, such as triethyleneglycol or hexaethylenegylcol, or alkane-diol, such as butanediol. The spacer or linker units are preferably linked by phosphodiester or phosphorothioate bonds. The linker units may appear just once in the molecule or may be incorporated several times, e.g. via phosphodiester, phosphorothioate, methylphosphonate, or amide linkages.
In some embodiments the self-assembling oligonucleotide may be a therapeutic oligonucleotide linked to a molecular species through a double or triple linker. As used herein a double linker is two linker units which are directly linked to one another and separate the molecular species from the therapeutic oligonucleotide. A triple linker is three linker units which are directly linked to one another. In some embodiments the double or triple linker units are comprised of an oligoethyleneglycol, alkane-diol or combinations thereof. An oligoethyleneglycol, for instance, may be a triethyleneglycol or hexaethylenegylcol. An alkane-diol may be, for instance, a butanediol. A double or triple linker provides an optimal size for forming the three-dimensional nanostructure.
In other embodiments the therapeutic oligonucleotide of the self-assembling oligonucleotide is an antisense oligonucleotide, a DNA oligonucleotide, a DNA-RNA hybrid oligonucleotide, or a RNA oligonucleotide such as an siRNA, miRNA, mRNA, non-coding RNA, or aptamer. In some embodiments the therapeutic oligonucleotide of the self-assembling oligonucleotide is linked to a sterol such as a cholesterol. In other embodiments the therapeutic oligonucleotide of the self-assembling oligonucleotide is linked to the sterol through a double or triple oligoethyleneglycol and/or alkane-diol linker.
In some embodiments the therapeutic oligonucleotide is a gapmer. In other embodiments the therapeutic oligonucleotide has 5′ and/or 3′ end modifications, such as phosphorothioate linkages and/or 2′O methyl modifications.
The stable self-assembling nanostructure in some embodiments is comprised of 3-100 self-assembling oligonucleotides. In other embodiments the self-assembling nanostructure is comprised of 5-100, 5-90, 5-80, 5-50, 5-40, 5-30, 5-25, 5-20, 5-15, 5-10, 10-100, 10-90, 10-80, 10-50, 10-40, 10-30, 10-25, 10-20, 10-15, 20-100, 20-90, 20-80, 20-50, 20-40, 20-30, or 20-25 self-assembling oligonucleotides.
The oligonucleotide of the invention (separate from the linkers connecting nucleotides to the molecular species) may also contain non-nucleotidic linkers, in particular abasic linkers (dSpacers), triethylene glycol units or hexaethylene glycol units. Further preferred linkers are alkylamino linkers, such as C3, C6, C12 aminolinkers, and also alkylthiol linkers, such as C3 or C6 thiol linkers.
TNFα plays a role in a wide variety of TNFα-related disorders. A TNFα disorder as used herein refers to a disorder in which TNFα activity is detrimental to a particular physiological function in a subject. As used herein, the term “a disorder in which TNFα activity is detrimental” is intended to include diseases and other disorders in which the levels of TNFα expressed in a subject suffering from the disorder plays a role in the pathophysiology of the disorder or as a factor that contributes to a worsening of or maintenance of the disorder. Accordingly, a disorder in which TNFα activity is detrimental is a disorder in which inhibition of TNFα activity is expected to alleviate at least one symptom and/or progression or worsening of the disorder. Such disorders may be evidenced, for example, by an increase in the concentration of TNFα in a biological fluid of a subject suffering from the disorder (e.g., an increase in the concentration of TNFα in serum, plasma, synovial fluid, etc. of the subject), which can be detected, for example, using a TNFα probe or an anti-TNFα antibody for detecting TNFα message or protein respectively.
Toxicity and efficacy of the prophylactic and/or therapeutic protocols of the present invention can be determined by standard pharmaceutical procedures in cell cultures or experimental animals, e.g., for determining the LD50 (the dose lethal to 50% of the population) and the ED50 (the dose therapeutically effective in 50% of the population). The dose ratio between toxic and therapeutic effects is the therapeutic index and it can be expressed as the ratio LD50/ED50. Prophylactic and/or therapeutic agents that exhibit large therapeutic indices are preferred. While prophylactic and/or therapeutic agents that exhibit toxic side effects may be used, care should be taken to design a delivery system that targets such agents to the site of affected tissue in order to minimize potential damage to uninfected cells and, thereby, reduce side effects.
The data obtained from the cell culture assays and animal studies can be used in formulating a range of dosage of the prophylactic and/or therapeutic agents for use in humans. The dosage of such agents lies preferably within a range of circulating concentrations that include the ED50 with little or no toxicity. The dosage may vary within this range depending upon the dosage form employed. For any agent used in the method of the invention, the therapeutically effective dose can be estimated initially from cell culture assays. In certain embodiments, pharmaceutical compositions may comprise, for example, at least about 0.1% of an active compound. In other embodiments, the an active compound may comprise between about 2% to about 75% of the weight of the unit, or between about 25% to about 60%, for example, and any range derivable therein.
Subject doses of the compounds described herein typically range from about 0.1 μg to 10,000 mg, more typically from about 1 μg/day to 8000 mg, and most typically from about 10 μg to 100 μg. Stated in terms of subject body weight, typical dosages range from about 1 microgram/kg/body weight, about 5 microgram/kg/body weight, about 10 microgram/kg/body weight, about 50 microgram/kg/body weight, about 100 microgram/kg/body weight, about 200 microgram/kg/body weight, about 350 microgram/kg/body weight, about 500 microgram/kg/body weight, about 1 milligram/kg/body weight, about 5 milligram/kg/body weight, about 10 milligram/kg/body weight, about 50 milligram/kg/body weight, about 100 milligram/kg/body weight, about 200 milligram/kg/body weight, about 350 milligram/kg/body weight, about 500 milligram/kg/body weight, to about 1000 mg/kg/body weight or more per administration, and any range derivable therein. In non-limiting examples of a derivable range from the numbers listed herein, a range of about 5 mg/kg/body weight to about 100 mg/kg/body weight, about 5 microgram/kg/body weight to about 500 milligram/kg/body weight, etc., can be administered, based on the numbers described above. The absolute amount will depend upon a variety of factors including the concurrent treatment, the number of doses and the individual patient parameters including age, physical condition, size and weight. These are factors well known to those of ordinary skill in the art and can be addressed with no more than routine experimentation. It is preferred generally that a maximum dose be used, that is, the highest safe dose according to sound medical judgment.
Multiple doses of the molecules of the invention are also contemplated. In some instances, when the molecules of the invention are administered with another therapeutic, for instance, an anti-inflammatory agent, a sub-therapeutic dosage of either the molecules or the other agent, or a sub-therapeutic dosage of both, is used in the treatment of a subject having, or at risk of developing a disorder such as an ocular disorder, an inflammatory disorder, a TNFα disorder or other disorder. When the two classes of drugs are used together, the other agent may be administered in a sub-therapeutic dose to produce a desirable therapeutic result. A “sub-therapeutic dose” as used herein refers to a dosage which is less than that dosage which would produce a therapeutic result in the subject if administered in the absence of the other agent. Thus, the sub-therapeutic dose of a therapeutic agent is one which would not produce the desired therapeutic result in the subject in the absence of the administration of the molecules of the invention. Therapeutic doses of agents useful for treating disorders are well known in the field of medicine. These dosages have been extensively described in references such as Remington's Pharmaceutical Sciences; as well as many other medical references relied upon by the medical profession as guidance for the treatment of inflammatory disorders, ocular disorders, infectious disease, cancer, and autoimmune disease. Therapeutic dosages of oligonucleotides have also been described in the art.
Dosing regimens may be several times a day, daily, every other day, weekly, biweekly any of the times there between or less frequently. The term “biweekly dosing” as used herein, refers to the time course of administering a substance (e.g., an antisense oligonucleotide such as an anti-TNFα nucleic acid) to a subject once every two weeks. The compositions may be administered every 7-20 days, every 11-17 days, or every 13-15 days, for example.
The compositions are administered in effective amounts. The effective amount of a compound of the invention in the treatment of a disease described herein may vary depending upon the specific compound used, the mode of delivery of the compound, and whether it is used alone or in combination. The effective amount for any particular application can also vary depending on such factors as the disease being treated, the particular compound being administered, the size of the subject, or the severity of the disease or condition. One of ordinary skill in the art can empirically determine the effective amount of a particular molecule of the invention without necessitating undue experimentation. Combined with the teachings provided herein, by choosing among the various active compounds and weighing factors such as potency, relative bioavailability, patient body weight, severity of adverse side-effects and preferred mode of administration, an effective prophylactic or therapeutic treatment regimen can be planned which does not cause substantial toxicity and yet is entirely effective to treat the particular subject.
The compositions described herein can be used alone or in conjugates with other molecules such as detection or cytotoxic agents in the detection and treatment methods of the invention, as described in more detail herein.
The composition may be, for instance, coupled or conjugated to a detectable label. A detectable label is a moiety, the presence of which can be ascertained directly or indirectly. Generally, detection of the label involves an emission of energy by the label. The label can be detected directly by its ability to emit and/or absorb photons or other atomic particles of a particular wavelength (e.g., radioactivity, luminescence, optical or electron density, etc.). A label can be detected indirectly by its ability to bind, recruit and, in some cases, cleave another moiety which itself may emit or absorb light of a particular wavelength (e.g., epitope tag such as the FLAG epitope, enzyme tag such as horseradish peroxidase, etc.). An example of indirect detection is the use of a first enzyme label which cleaves a substrate into visible products. The label may be of a chemical, peptide or nucleic acid molecule nature although it is not so limited. Other detectable labels include radioactive isotopes such as P32 or H3, luminescent markers such as fluorochromes, optical or electron density markers, etc., or epitope tags such as the FLAG epitope or the HA epitope, biotin, avidin, and enzyme tags such as horseradish peroxidase, β-galactosidase, etc. The label may be bound to an oligonucleotide during or following its synthesis. There are many different labels and methods of labeling known to those of ordinary skill in the art. Examples of the types of labels that can be used in the present invention include enzymes, radioisotopes, fluorescent compounds, colloidal metals, chemiluminescent compounds, and bioluminescent compounds. Those of ordinary skill in the art will know of other suitable labels for the oligonucleotides described herein, or will be able to ascertain such, using routine experimentation. Furthermore, the coupling or conjugation of these labels to the oligonucleotides of the invention can be performed using standard techniques common to those of ordinary skill in the art.
Conjugation of the oligonucleotides to a detectable label facilitates, among other things, the use of such agents in diagnostic assays. Another category of detectable labels includes diagnostic and imaging labels (generally referred to as in vivo detectable labels) such as for example magnetic resonance imaging (MRI): Gd(DOTA); for nuclear medicine: 201Tl, gamma-emitting radionuclide 99mTc; for positron-emission tomography (PET): positron-emitting isotopes, (18)F-fluorodeoxyglucose ((18)FDG), (18)F-fluoride, copper-64, gadodiamide, and radioisotopes of Pb(II) such as 203Pb; 111In. In such instances, the use of the oligonucleotide could be observed as the oligonucleotide provides an antisense effect.
The conjugations or modifications described herein employ routine chemistry, which chemistry does not form a part of the invention and which chemistry is well known to those skilled in the art of chemistry. The use of protecting groups and known linkers such as mono- and hetero-bifunctional linkers are well documented in the literature and will not be repeated here.
As used herein, “conjugated” means two entities stably bound to one another by any physiochemical means. It is important that the nature of the attachment is such that it does not impair substantially the effectiveness of either entity. Keeping these parameters in mind, any covalent or non-covalent linkage known to those of ordinary skill in the art may be employed. In some embodiments, covalent linkage is preferred. Noncovalent conjugation includes hydrophobic interactions, ionic interactions, high affinity interactions such as biotin-avidin and biotin-streptavidin complexation and other affinity interactions. Such means and methods of attachment are well known to those of ordinary skill in the art. A variety of methods may be used to detect the label, depending on the nature of the label and other assay components.
Pharmaceutical compositions of the present invention comprise an effective amount of one or more agents, dissolved or dispersed in a pharmaceutically acceptable carrier. The phrases “pharmaceutical or pharmacologically acceptable” refers to molecular entities and compositions that do not produce an adverse, allergic or other untoward reaction when administered to an animal, such as, for example, a human, as appropriate. Moreover, for animal (e.g., human) administration, it will be understood that preparations should meet sterility, pyrogenicity, general safety and purity standards as required by FDA Office of Biological Standards. The compounds are generally suitable for administration to humans. This term requires that a compound or composition be nontoxic and sufficiently pure so that no further manipulation of the compound or composition is needed prior to administration to humans.
As used herein, “pharmaceutically acceptable carrier” includes any and all solvents, dispersion media, coatings, surfactants, antioxidants, preservatives (e.g., antibacterial agents, antifungal agents), isotonic agents, absorption delaying agents, salts, preservatives, drugs, drug stabilizers, gels, binders, excipients, disintegration agents, lubricants, sweetening agents, flavoring agents, dyes, such like materials and combinations thereof, as would be known to one of ordinary skill in the art (see, for example, Remington's Pharmaceutical Sciences (1990), incorporated herein by reference). Except insofar as any conventional carrier is incompatible with the active ingredient, its use in the therapeutic or pharmaceutical compositions is contemplated.
The compositions of the invention may be formulated in a topical composition for administration to the eye. Suitable topical vehicles and vehicle components include such vehicles (or vehicle components) as water; organic solvents such as alcohols (particularly lower alcohols readily capable of evaporating from the skin such as ethanol), glycols (such as propylene glycol, butylene glycol, and glycerin), aliphatic alcohols (such as lanolin); mixtures of water and organic solvents (such as water and alcohol), and mixtures of organic solvents such as alcohol and glycerin (optionally also with water); lipid-based materials such as fatty acids, acylglycerols (including oils, such as mineral oil, and fats of natural or synthetic origin), phosphoglycerides, sphingolipids and waxes; protein-based materials such as collagen and gelatin; silicone-based materials (both non-volatile and volatile) such as cyclomethicone, demethiconol and dimethicone copolyol (Dow Corning); hydrocarbon-based materials such as petrolatum and squalane; anionic, cationic and amphoteric surfactants and soaps; sustained-release vehicles such as microsponges and polymer matrices; stabilizing and suspending agents; emulsifying agents; and other vehicles and vehicle components that are suitable for administration to the skin, as well as mixtures of topical vehicle components as identified above or otherwise known to the art. The vehicle may further include components adapted to improve the stability or effectiveness of the applied formulation, such as preservatives, antioxidants, skin penetration enhancers, sustained release materials, and the like. Examples of such vehicles and vehicle components are well known in the art and are described in such reference works as Martindale—The Extra Pharmacopoeia (Pharmaceutical Press, London 1993) and Martin (ed.), Remington's Pharmaceutical Sciences.
In some embodiments the antisense nucleic acids of the invention are formulated as a stable self-assembling nanostructure and incorporated in the topical carrier. The nanostructure includes a TNFα, platelet-derived growth factor subunit A (PDGFA), platelet-derived growth factor subunit B (PDGFB), platelet-derived growth factor subunit C (PDGFC), platelet-derived growth factor subunit D (PDGFD), platelet-derived growth factor receptor alpha (PDGFRA), platelet-derived growth factor receptor beta (PDGFRB), platelet-derived growth factor receptor like (PDGFRL), vascular endothelial growth factor A (VEGFA), vascular endothelial growth factor B (VEGFB), vascular endothelial growth factor C (VEGFC), vascular endothelial growth factor D (VEGFD), vascular endothelial growth factor receptor-1 (VEGFR1), vascular endothelial growth factor receptor-2 (VEGFR2), vascular endothelial growth factor receptor-3 (VEGFR3), beta-2 adrenergic receptor, connective tissue growth factor (CTGF), interleukin 1 beta (IL1β), interleukin 1 receptor-1 (IL1R1), interleukin 1 receptor-2 (IL1R2), or interleukin 1 receptor-3 (IL1R3) antisense oligonucleotide, wherein the antisense oligonucleotide is associated with a core. The core may be a solid or a hollow core, such as a liposomal core. A solid core is a spherical shaped material that does not have a hollow center. The term spherical as used herein refers to a general shape and does not imply or is not limited to a perfect sphere or round shape. It may include imperfections.
In certain embodiments, the diameter of the core is from 1 nm to about 250 nm in mean diameter, about 1 nm to about 240 nm in mean diameter, about 1 nm to about 230 nm in mean diameter, about 1 nm to about 220 nm in mean diameter, about 1 nm to about 210 nm in mean diameter, about 1 nm to about 200 nm in mean diameter, about 1 nm to about 190 nm in mean diameter, about 1 nm to about 180 nm in mean diameter, about 1 nm to about 170 in mean diameter, about 1 nm to about 160 nm in mean diameter, about 1 nm to about 150 nm in mean diameter, about 1 nm to about 140 nm in mean diameter, about 1 nm to about 130 nm in mean diameter, about 1 nm to about 120 nm in mean diameter, about 1 nm to about 110 nm in mean diameter, about 1 nm to about 100 nm in mean diameter, about 1 nm to about 90 nm in mean diameter, about 1 nm to about 80 nm in mean diameter, about 1 nm to about 70 nm in mean diameter, about 1 nm to about 60 nm in mean diameter, about 1 nm to about 50 nm in mean diameter, about 1 nm to about 40 nm in mean diameter, about 1 nm to about 30 nm in mean diameter, or about 1 nm to about 20 nm in mean diameter, or about 1 nm to about 10 nm in mean diameter.
Solid cores can be constructed from a wide variety of materials known to those skilled in the art including but not limited to: noble metals (gold, silver), transition metals (iron, cobalt) and metal oxides (silica). In addition, these cores may be inert, paramagnetic, or superparamagnetic. These solid cores can be constructed from either pure compositions of described materials, or in combinations of mixtures of any number of materials, or in layered compositions of materials. In addition, solid cores can be composed of a polymeric core such as amphiphilic block copolymers, hydrophobic polymers such as polystyrene, poly(lactic acid), poly(lactic co-glycolic acid), poly(glycolic acid), poly(caprolactone) and other biocompatible polymers known to those skilled in the art.
The core may alternatively be a hollow core, which has at least some space in the center region of a shell material. Hollow cores include liposomal cores and niosomes. A liposomal core as used herein refers to a centrally located core compartment formed by a component of the lipids or phospholipids that form a lipid bilayer. “Liposomes” are artificial, self-closed vesicular structure of various sizes and structures, where one or several membranes encapsulate an aqueous core. Most typically liposome membranes are formed from lipid bilayers membranes, where the hydrophilic head groups are oriented towards the aqueous environment and the lipid chains are embedded in the lipophilic core. Liposomes can be formed as well from other amphiphilic monomeric and polymeric molecules, such as polymers, like block copolymers, or polypeptides. Unilamellar vesicles are liposomes defined by a single membrane enclosing an aqueous space. In contrast, oligo- or multilamellar vesicles are built up of several membranes. Typically, the membranes are roughly 4 nm thick and are composed of amphiphilic lipids, such as phospholipids, of natural or synthetic origin. Optionally, the membrane properties can be modified by the incorporation of other lipids such as sterols or cholic acid derivatives.
The lipid bilayer is composed of two layers of lipid molecules. Each lipid molecule in a layer is oriented substantially parallel to adjacent lipid bilayers, and two layers that form a bilayer have the polar ends of their molecules exposed to the aqueous phase and the non-polar ends adjacent to each other. The central aqueous region of the liposomal core may be empty or filled fully or partially with water, an aqueous emulsion, oligonucleotides, or other therapeutic or diagnostic agents. Other therapeutics may be small molecules, antibodies, therapeutic proteins or other agents that provide therapeutic benefit.
Niosomes are vesicles formed from non-ionic surfactant oriented in a bilayer. Niosomes commonly have cholesterol added as an excipient, but other lipid-based and non-lipid-based constituents can also be included. Methods for preparation of niosomes are known in the art. In some embodiments polyethylene glycol (PEG) is included during or following niosome preparation. Niosome vesicles are structurally and functionally analogous to liposomes, but are based on non-ionic surfactant rather than lipid as the primary constituent. Common non-ionic surfactants used include sorbitans (spans) or polysorbates (tween); however, a wide variety of non-ionic surfactants can be used to prepare niosomes.
Non-limiting examples of small molecule therapeutics include pazopanib, sorafenib, lapatinib, fluocinolone acetonide, semaxanib, axitinib, tivozanib, cediranib, linifanib, regorafenib, telatinib, vatalanib, MGCD-265, OSI-930, KRN-633, bimatoprost, latanoprost, travoprost, aloxiprin, auranofin, azapropazone, benorylate, diflunisal, etodolac, fenbufen, fenoprofen calcim, flurbiprofen, furosemide, ibuprofen, indomethacin, ketoprofen, loteprednol etabonate, bromfenac beryllium, bromfenac magnesium, bromfenac calcium, bromfenac strontium, bromfenac barium, bromfenac zinc, bromfenac copper(II), diclofenac free acid, diclofenac beryllium, diclofenac magnesium, diclofenac calcium, diclofenac strontium, diclofenac barium, diclofenac zinc, diclofenac copper(II), ketorolac free acid, ketorolac beryllium, ketorolac magnesium, ketorolac calcium, ketorolac strontium, ketorolac barium, ketorolac zinc, ketorolac copper(II), meclofenamic acid, mefenamic acid, nabumetone, naproxen, oxyphenbutazone, phenylbutazone, piroxicam, sulindac, albendazole, bephenium hydroxynaphthoate, cambendazole, dichlorophen, ivermectin, mebendazole, oxamniquine, oxfendazole, oxantel embonate, praziquantel, pyrantel embonate, thiabendazole, amiodarone HCl, disopyramide, flecamide acetate, quinidine sulphate. Anti-bacterial agents: benethamine penicillin, cinoxacin, ciprofloxacin HCl, clarithromycin, clofazimine, cloxacillin, demeclocycline, doxycycline, erythromycin, ethionamide, imipenem, nalidixic acid, nitrofurantoin, rifampicin, spiramycin, sulphabenzamide, sulphadoxine, sulphamerazine, sulphacetamide, sulphadiazine, sulphafurazole, sulphamethoxazole, sulphapyridine, tetracycline, trimethoprim, dicoumarol, dipyridamole, nicoumalone, phenindione, amoxapine, maprotiline HCl, mianserin HCL, nortriptyline HCl, trazodone HCL, trimipramine maleate, acetohexamide, chlorpropamide, glibenclamide, gliclazide, glipizide, tolazamide, tolbutamide, beclamide, carbamazepine, clonazepam, ethotoin, methoin, methsuximide, methylphenobarbitone, oxcarbazepine, paramethadione, phenacemide, phenobarbitone, phenyloin, phensuximide, primidone, sulthiame, valproic acid, amphotericin, butoconazole nitrate, clotrimazole, econazole nitrate, fluconazole, flucytosine, griseofulvin, itraconazole, ketoconazole, miconazole, natamycin, nystatin, sulconazole nitrate, terbinafine HCl, terconazole, tioconazole, undecenoic acid, allopurinol, probenecid, sulphin-pyrazone, amlodipine, benidipine, darodipine, dilitazem HCl, diazoxide, felodipine, guanabenz acetate, isradipine, minoxidil, nicardipine HCl, nifedipine, nimodipine, phenoxybenzamine HCl, prazosin HCL, reserpine, terazosin HCL, amodiaquine, chloroquine, chlorproguanil HCl, halofantrine HCl, mefloquine HCl, roguanil HCl, pyrimethamine, quinine sulphate, dihydroergotamine mesylate, ergotamine tartrate, methysergide maleate, pizotifen maleate, sumatriptan succinate, atropine, benzhexyl HCl, biperiden, ethopropazine HCl, hyoscyamine, mepenzolate bromide, oxyphencylcimine HCl, tropicamide, aminoglutethimide, amsacrine, azathioprine, busulphan, chlorambucil, cyclosporin, dacarbazine, estramustine, etoposide, lomustine, melphalan, mercaptopurine, methotrexate, mitomycin, mitotane, mitozantrone, procarbazine HCl, tamoxifen citrate, testolactone, benznidazole, clioquinol, decoquinate, diiodohydroxyquinoline, diloxanide furoate, dinitolmide, furzolidone, metronidazole, nimorazole, nitrofurazone, ornidazole, tinidazole, carbimazole, propylthiouracil, alprazolam, amylobarbitone, barbitone, bentazepam, bromazepam, bromperidol, brotizolam, butobarbitone, carbromal, chlordiazepoxide, chlormethiazole, chlorpromazine, clobazam, clotiazepam, clozapine, diazepam, droperidol, ethinamate, flunanisone, flunitrazepam, fluopromazine, flupenthixol decanoate, fluphenazine decanoate, flurazepam, haloperidol, lorazepam, lormetazepam, medazepam, meprobamate, methaqualone, midazolam, nitrazepam, oxazepam, pentobarbitone, perphenazine pimozide, prochlorperazine, sulpiride, temazepam, thioridazine, triazolam, zopiclone, acebutolol, alprenolol, atenolol, labetalol, metoprolol, nadolol, oxprenolol, pindolol, propranolol, aminone, digitoxin, digoxin, enoximone, lanatoside C, medigoxin, beclomethasone, betamethasone, budesonide, cortisone acetate, desoxymethasone, dexamethasone, fludrocortisone acetate, flunisolide, flucortolone, fluticasone propionate, hydrocortisone, methylprednisolone, prednisolone, prednisone, triamcinolone, acetazolamide, amiloride, bendrofluazide, bumetanide, chlorothiazide, chlorthalidone, ethacrynic acid, frusemide, metolazone, spironolactone, triamterene, bromocriptine mesylate, lysuride maleate, bisacodyl, cimetidine, cisapride, diphenoxylate HCl, domperidone, famotidine, loperamide, mesalazine, nizatidine, omeprazole, ondansetron HCL, ranitidine HCl, sulphasalazine, acrivastine, astemizole, cinnarizine, cyclizine, cyproheptadie HCl, dimenhydrinate, flunarizine HCl, loratadine, meclozine HCl, oxatomide, terfenadine, bezafibrate, clofibrate, fenofibrate, gemfibrozil, probucol, amyl nitrate, glyceryl trinitrate, isosorbide dinitrate, isosorbide mononitrate, pentaerythritol tetranitrate, betacarotene, vitamin A, vitamin B 2, vitamin D, vitamin E, vitamin K, codeine, dextropropyoxyphene, diamorphine, dihydrocodeine, meptazinol, methadone, morphine, nalbuphine, pentazocine, clomiphene citrate, danazol, ethinyl estradiol, medroxyprogesterone acetate, mestranol, methyltestosterone, norethisterone, norgestrel, estradiol, conjugated oestrogens, progesterone, stanozolol, stibestrol, testosterone, tibolone, amphetamine, dexamphetamine, dexfenfluramine, fenfluramine, and mazindol.
Non-limiting examples of antibody therapeutics include ranibizumab, bevacizumab, aflibercept, infliximab, etanercept, adalimumab and others.
“Lipid” refers to its conventional sense as a generic term encompassing fats, lipids, alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. Lipids usually consist of a hydrophilic and a hydrophobic moiety. In water lipids can self organize to form bilayers membranes, where the hydrophilic moieties (head groups) are oriented towards the aqueous phase, and the lipophilic moieties (acyl chains) are embedded in the bilayers core. Lipids can comprise as well two hydrophilic moieties (bola amphiphiles). In that case, membranes may be formed from a single lipid layer, and not a bilayer. Typical examples for lipids in the current context are fats, fatty oils, essential oils, waxes, steroid, sterols, phospholipids, glycolipids, sulpholipids, aminolipids, chromolipids, and fatty acids. The term encompasses both naturally occurring and synthetic lipids. Preferred lipids in connection with the present invention are: steroids and sterol, particularly cholesterol, phospholipids, including phosphatidyl, phosphatidylcholines and phosphatidylethanolamines and sphingomyelins. Where there are fatty acids, they could be about 12-24 carbon chains in length, containing up to 6 double bonds. The fatty acids are linked to the backbone, which may be derived from glycerol. The fatty acids within one lipid can be different (asymmetric), or there may be only 1 fatty acid chain present, e.g. lysolecithins. Mixed formulations are also possible, particularly when the non-cationic lipids are derived from natural sources, such as lecithins (phosphatidylcholines) purified from egg yolk, bovine heart, brain, liver or soybean.
The liposomal core can be constructed from one or more lipids known to those in the art including but not limited to: sphingolipids such as sphingosine, sphingosine phosphate, methylated sphingosines and sphinganines, ceramides, ceramide phosphates, 1-0 acyl ceramides, dihydroceramides, 2-hydroxy ceramides, sphingomyelin, glycosylated sphingolipids, sulfatides, gangliosides, phosphosphingolipids, and phytosphingosines of various lengths and saturation states and their derivatives, phospholipids such as phosphatidylcholines, lysophosphatidylcholines, phosphatidic acids, lysophosphatidic acids, cyclic LPA, phosphatidylethanolamines, lysophosphatidylethanolamines, phosphatidylglycerols, lysophosphatidylglycerols, phosphatidylserines, lysophosphatidylserines, phosphatidylinositols, inositol phosphates, LPI, cardiolipins, lysocardiolipins, bis(monoacylglycero) phosphates, (diacylglycero) phosphates, ether lipids, diphytanyl ether lipids, and plasmalogens of various lengths, saturation states, and their derivatives, sterols such as cholesterol, desmosterol, stigmasterol, lanosterol, lathosterol, diosgenin, sitosterol, zymosterol, zymostenol, 14-demethyl-lanosterol, cholesterol sulfate, DHEA, DHEA sulfate, 14-demethyl-14-dehydrlanosterol, sitostanol, campesterol, ether anionic lipids, ether cationic lipids, lanthanide chelating lipids, A-ring substituted oxysterols, B-ring substituted oxysterols, D-ring substituted oxysterols, side-chain substituted oxysterols, double substituted oxysterols, cholestanoic acid derivatives, fluorinated sterols, fluorescent sterols, sulfonated sterols, phosphorylated sterols, and polyunsaturated sterols of different lengths, saturation states, and their derivatives.
The oligonucleotides may be positioned on the exterior of the core, within the walls of the core and/or in the center of the core. An oligonucleotide that is positioned on the core is typically referred to as coupled to the core. Coupled may be direct or indirect. In some embodiments at least 25, 50, 75, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000, 9,000, or 10,000 oligonucleotides, such as antisense oligonucleotides, or any range combination thereof are on the exterior of the core. In some embodiments, 1-1000, 2-1000, 10-500, 10-250, 50-500, 50-250, or 50-300 oligonucleotides, such as antisense oligonucleotides, are present on the exterior of the core.
The oligonucleotides of the oligonucleotide shell may be oriented in a variety of directions. In some embodiments the oligonucleotides are oriented radially outwards. The orientation of these oligonucleotides can be either 5′ distal/3′ terminal in relation to the core, or 3′ distal/5′ terminal in relation to the core, or laterally oriented around the core. In one embodiment one or a multiplicity of different oligonucleotides are present on the same surface of a single SNA. In all cases, at least 1 oligonucleotide is present on the surface but up to 10,000 can be present.
The oligonucleotides may be linked to the core or to one another and/or to other molecules such an active agents either directly or indirectly through a linker. The oligonucleotides may be conjugated to a linker via the 5′ end or the 3′ end, e.g. [Sequence, 5′-3′]-Linker or Linker-[Sequence, 5′-3′]. Some or all of the oligonucleotides of the nanostructure may be linked to one another either directly or indirectly through a covalent or non-covalent linkage. The linkage of one oligonucleotide to another oligonucleotide may be in addition to or alternatively to the linkage of that oligonucleotide to liposomal core.
The oligonucleotide shell may be anchored to the surface of the core through one or multiple of linker molecules, including but not limited to: any chemical structure containing one or multiple thiols, such as the various chain length alkane thiols, cyclic dithiol, lipoic acid, or other thiol linkers known to those skilled in the art.
In an embodiment containing a liposomal core, the oligonucleotide shell may be anchored to the surface of the liposomal core through conjugation to one or a multiplicity of linker molecules including but not limited to: tocopherols, sphingolipids such as sphingosine, sphingosine phosphate, methylated sphingosines and sphinganines, ceramides, ceramide phosphates, 1-0 acyl ceramides, dihydroceramides, 2-hydroxy ceramides, sphingomyelin, glycosylated sphingolipids, sulfatides, gangliosides, phosphosphingolipids, and phytosphingosines of various lengths and saturation states and their derivatives, phospholipids such as phosphatidylcholines, lysophosphatidylcholines, phosphatidic acids, lysophosphatidic acids, cyclic LPA, phosphatidylethanolamines, lysophosphatidylethanolamines, phosphatidylglycerols, lysophosphatidylglycerols, phosphatidylserines, lysophosphatidylserines, phosphatidylinositols, inositol phosphates, LPI, cardiolipins, lysocardiolipins, bis(monoacylglycero) phosphates, (diacylglycero) phosphates, ether lipids, diphytanyl ether lipids, and plasmalogens of various lengths, saturation states, and their derivatives, sterols such as cholesterol, desmosterol, stigmasterol, lanosterol, lathosterol, diosgenin, sitosterol, zymosterol, zymostenol, 14-demethyl-lanosterol, cholesterol sulfate, DHEA, DHEA sulfate, 14-demethyl-14-dehydrlanosterol, sitostanol, campesterol, ether anionic lipids, ether cationic lipids, lanthanide chelating lipids, A-ring substituted oxysterols, B-ring substituted oxysterols, D-ring substituted oxysterols, side-chain substituted oxysterols, double substituted oxysterols, cholestanoic acid derivatives, fluorinated sterols, fluorescent sterols, sulfonated sterols, phosphorylated sterols, and polyunsaturated sterols of different lengths, saturation states, and their derivatives.
The oligonucleotide may also be associated with the core by being embedded within the core (liposomal core) or it may be attached or linked, either indirectly (i.e. non-covalently or covalently through other molecules such a linkers) or directly (i.e. covalently).
The invention also includes articles, which refers to any one or collection of components. In some embodiments the articles are kits. The articles include pharmaceutical or diagnostic grade compounds of the invention in one or more containers. The article may include instructions or labels promoting or describing the use of the compounds of the invention.
As used herein, “promoted” includes all methods of doing business including methods of education, hospital and other clinical instruction, pharmaceutical industry activity including pharmaceutical sales, and any advertising or other promotional activity including written, oral and electronic communication of any form, associated with compositions of the invention in connection with treatment of TNFα disorders.
“Instructions” can define a component of promotion, and typically involve written instructions on or associated with packaging of compositions of the invention. Instructions also can include any oral or electronic instructions provided in any manner.
Thus the agents described herein may, in some embodiments, be assembled into pharmaceutical or diagnostic or research kits to facilitate their use in therapeutic, diagnostic or research applications. A kit may include one or more containers housing the components of the invention and instructions for use. Specifically, such kits may include one or more agents described herein, along with instructions describing the intended therapeutic application and the proper administration of these agents. In certain embodiments agents in a kit may be in a pharmaceutical formulation and dosage suitable for a particular application and for a method of administration of the agents.
The kit may be designed to facilitate use of the methods described herein by physicians and can take many forms. Each of the compositions of the kit, where applicable, may be provided in liquid form (e.g., in solution), or in solid form, (e.g., a dry powder). In certain cases, some of the compositions may be constitutable or otherwise processable (e.g., to an active form), for example, by the addition of a suitable solvent or other species (for example, water or a cell culture medium), which may or may not be provided with the kit. As used herein, “instructions” can define a component of instruction and/or promotion, and typically involve written instructions on or associated with packaging of the invention. Instructions also can include any oral or electronic instructions provided in any manner such that a user will clearly recognize that the instructions are to be associated with the kit, for example, audiovisual (e.g., videotape, DVD, etc.), Internet, and/or web-based communications, etc. The written instructions may be in a form prescribed by a governmental agency regulating the manufacture, use or sale of pharmaceuticals or biological products, which instructions can also reflects approval by the agency of manufacture, use or sale for human administration.
The kit may contain any one or more of the components described herein in one or more containers. As an example, in one embodiment, the kit may include instructions for mixing one or more components of the kit and/or isolating and mixing a sample and applying to a subject. The kit may include a container housing agents described herein. The agents may be prepared sterilely, packaged in syringe and shipped refrigerated. Alternatively it may be housed in a vial or other container for storage. A second container may have other agents prepared sterilely. Alternatively the kit may include the active agents premixed and shipped in a syringe, vial, tube, or other container.
The kit may have a variety of forms, such as a blister pouch, a shrink wrapped pouch, a vacuum sealable pouch, a sealable thermoformed tray, or a similar pouch or tray form, with the accessories loosely packed within the pouch, one or more tubes, containers, a box or a bag. The kit may be sterilized after the accessories are added, thereby allowing the individual accessories in the container to be otherwise unwrapped. The kits can be sterilized using any appropriate sterilization techniques, such as radiation sterilization, heat sterilization, or other sterilization methods known in the art. The kit may also include other components, depending on the specific application, for example, containers, cell media, salts, buffers, reagents, syringes, needles, a fabric, such as gauze, for applying or removing a disinfecting agent, disposable gloves, a support for the agents prior to administration etc.
The compositions of the kit may be provided as any suitable form, for example, as liquid solutions or as dried powders. When the composition provided is a dry powder, the powder may be reconstituted by the addition of a suitable solvent, which may also be provided. In embodiments where liquid forms of the composition are sued, the liquid form may be concentrated or ready to use. The solvent will depend on the compound and the mode of use or administration. Suitable solvents for drug compositions are well known and are available in the literature. The solvent will depend on the compound and the mode of use or administration.
The kits, in one set of embodiments, may comprise a carrier means being compartmentalized to receive in close confinement one or more container means such as vials, tubes, and the like, each of the container means comprising one of the separate elements to be used in the method. For example, one of the containers may comprise a positive control for an assay. Additionally, the kit may include containers for other components, for example, buffers useful in the assay.
The present invention also encompasses a finished packaged and labeled pharmaceutical product. This article of manufacture includes the appropriate unit dosage form in an appropriate vessel or container such as a glass vial or other container that is hermetically sealed. In the case of dosage forms suitable for parenteral administration the active ingredient is sterile and suitable for administration as a particulate free solution. In other words, the invention encompasses both parenteral solutions and lyophilized powders, each being sterile, and the latter being suitable for reconstitution prior to injection. Alternatively, the unit dosage form may be a solid suitable for oral, transdermal, topical or mucosal delivery.
In a some embodiments, the unit dosage form is suitable for topical, intravenous, intramuscular or subcutaneous delivery. Thus, the invention encompasses solutions, preferably sterile, suitable for each delivery route.
As with any pharmaceutical product, the packaging material and container are designed to protect the stability of the product during storage and shipment. Further, the products of the invention include instructions for use or other informational material that advise the physician, technician or patient on how to appropriately prevent or treat the disease or disorder. In other words, the article of manufacture includes instruction means indicating or suggesting a dosing regimen including, but not limited to, actual doses, monitoring procedures and other monitoring information.
More specifically, the invention provides an article of manufacture comprising packaging material, such as a box, bottle, tube, vial, container, sprayer, insufflator, intravenous (i.v.) bag, envelope and the like; and at least one unit dosage form of a pharmaceutical agent contained within said packaging material. The invention also provides an article of manufacture comprising packaging material, such as a box, bottle, tube, vial, container, sprayer, insufflator, intravenous (i.v.) bag, envelope and the like; and at least one unit dosage form of each pharmaceutical agent contained within said packaging material. The invention further provides an article of manufacture comprising packaging material, such as a box, bottle, tube, vial, container, sprayer, insufflator, intravenous (i.v.) bag, envelope and the like; and at least one unit dosage form of each pharmaceutical agent contained within said packaging material. The invention further provides an article of manufacture comprising a needle or syringe, preferably packaged in sterile form, for injection of the formulation, and/or a packaged alcohol pad.
This invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having,” “containing,” “involving,” and variations thereof herein, is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein. Such equivalents are intended to be encompassed by the following claims.
All references, including patent documents, disclosed herein are incorporated by reference in their entirety.
A series of experiments were conducted to determine whether topical administration of spherical nucleic acid (SNA) results in penetration to posterior eye tissues.
As a representative SNA, TNFα antisense SNA was delivered as an eye drop to rabbits. Subsequently the concentration of TNFα antisense oligo in various eye tissues was assessed, as was TNF mRNA.
TNFα antisense SNA compound was synthesized using a central DNA hexamer with a phosphorothioate backbone flanked on each side by 2′O-methyl RNA hexamers with phosphodiester backbones, and a cholesterol moiety attached to the 3′-end via two hexaethyleneglycol moieties.
Two solution formulations were used in vivo: PBS, and Standard Solution Formulation (SSF), composed of 0.5% hydroxypropyl methylcellulose, 0.5% sodium phosphate, 0.75% sodium chloride, 0.05% polysorbate 80, 0.01% disodium EDTA, and 0.01% benzalkonium chloride, pH 7.4.
The vehicle treatment group consisted of a Dutch belted rabbit that was administered PBS (vehicle 1) in its left eye and SSF (vehicle 2) in its right eye. The TNFα antisense SNA treatment group included two Dutch belted rabbits. The first rabbit received TNFα antisense SNA in PBS (40 μL, 500 μM=150 μg/dose) while the second rabbit received TNFα antisense SNA in SSF (40 μL, 500 μM=150 μg/dose).
The eye drops were administered four times per day for 4.5 days, resulting in a total of 18 doses (2.67 mg TNFα SNA total). Eyes were flash-frozen and nine eye tissues were dissected. The conjunctiva, lens, iris/ciliary body, and sclera were stored frozen. The cornea, aqueous humor, vitreous humor, retina, and the RPE/choroid were analyzed. The quantity of TNFα antisense SNA was determined using PNA-HPLC, and the TNF mRNA level was found using a bDNA assay.
In the SSF TNAα group, TNFα antisense SNA was found in the cornea and in the retina. In the PBS TNFα group, TNFα antisense SNA was only found in the cornea (
Because TNFα antisense SNA targets TNF mRNA, the level of TNF mRNA was also measured (
Following topical (eyedrop) administration, TNFα antisense SNA reached the retina. Eye drop administration of SNA resulted in penetration to interior eye tissues. SNA penetrated into both anterior (cornea) and posterior (retina) tissues.
Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein. Such equivalents are intended to be encompassed by the following claims.
All references, including patent documents, disclosed herein are incorporated by reference in their entirety.
This application claims the benefit under 35 U.S.C. § 119(e) of U.S. provisional application Ser. No. 62/324,855, filed Apr. 19, 2016, the entire contents of which is incorporated by reference herein.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2017/027417 | 4/13/2017 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 62324855 | Apr 2016 | US |
