While adoptive cell therapies show efficacy in cancer treatment, the effectiveness of these therapies can be further improved through genetic engineering of T cells for better expansion and persistence. T cells require functionally non-overlapping co-stimulatory signals from CD28 family and tumor necrosis factor receptor (TNFR) family along with antigen triggered TCR signaling to promote full-fledged activation and persistent proliferation. In developing gene-engineered T cell therapeutics, there is a need to introduce chimeric T cell co-stimulatory molecules that can be locally activated upon T cell engaging with pathological antigens to potently augment T cell activation for increased therapeutic efficacy. Currently, the second generation of chimeric co-stimulatory molecules incorporating one co-stimulatory signaling domain from proteins of either CD28 family or TNFR family has been widely adopted in CAR T cell therapy. Chimeric antigen receptors (CARs) integrating one co-stimulatory signaling domain augment T cell function through both activating and co-stimulatory signals, thus resulting in enhanced anti-tumor potency and T cell persistence. Given that the capacity for T cell to expand depends on the structural design, the current second generation co-stimulatory proteins may not be optimal for induction of a durable tumor remissions. Thus, there is a desired effort to develop third-generation chimeric molecules combining two co-stimulatory signaling domains from CD28 family and TNFR family members to further enhance T cell therapeutic potential, capitalizing on non-overlapping functions of the two families of co-stimulatory molecules. In addition, such third-generation chimeric co-stimulatory molecules can be integrated into TCR T therapy where T cell activation remains suboptimal due to insufficient co-stimulatory signals during activation of exogenously expressed TCRs by antigens. However, existing recombinant DNA strategies often suffer from reduced cell surface expression of the chimeric proteins combining two co-stimulatory signaling domains, preventing realization of the functional potential of the chimeric proteins. The present application addresses such needs. The present application discloses third-generation chimeric T cell co-stimulatory molecules that incorporate two signaling domains from CD28 and TNFR families and express at significantly improved levels than what have been conventionally reported for enhanced T cell functions, and methods of making the co-stimulatory molecules.
Provided herein are novel chimeric co-stimulatory intracellular domains. The chimeric co-stimulatory intracellular domains provided herein comprise: (a) a first signaling domain that is based on the intracellular signaling domain of a CD28 family protein; and (b) at least a second signaling domain that comprises a mutant intracellular signaling domain of a tumor necrosis factor receptor (TNFR) family protein.
In some embodiments, the first signaling domain that is based on the intracellular signaling domain of a CD28 family proteins is selected from a CD28 protein, ICOS protein or a combination thereof. In some embodiments, the at least second signaling domain is based on a mutant of the intracellular signaling domain of a TNFR family protein selected from CD137 (4-1BB) and CD134 (OX-40).
The chimeric co-stimulatory intracellular domains provided herein comprise: (a) a first signaling domain that is based on the intracellular signaling domain of a CD28 protein, ICOS protein or a combination thereof; and (b) at least a second signaling domain that comprises a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain. In some embodiments, the mutant CD137 (4-1BB) intracellular domain or the mutant CD134 (OX-40) intracellular domain comprises a deletion, an insertion or a substitution of one or more amino acids in the membrane proximal portion of the CD137 or CD134 intracellular domain. Without being bound by theory, in some embodiments, the one or more amino acids in the membrane proximal portion can be ubiquitination sites involved in the ubiquitination and degradation of the CD137 or CD134 protein.
Also disclosed herein is a functionally optimized intracellular co-stimulatory domain for use in novel adoptive cell therapy, optionally in combination with cell-intrinsic immune checkpoint inhibitory receptors or immune-stimulatory receptors or portions thereof, developed to treat human diseases and disorders, including hematological and solid tumors. Also disclosed herein is a functionally optimized intracellular co-stimulatory domain for use in combination with a T cell receptor (TCR), e.g. an endogenous TCR or an affinity enhanced TCR targeting a tumor-associated antigen. Optionally, the intracellular co-stimulatory domain is used in combination with a second component (e.g., a cell surface receptor or portion thereof) that directs migration of an immune cell to bind to a target tissue or cell or induces activation and/or proliferation of an immune cell, such as a PD-1 switch receptor (PD-1 based co-stimulatory molecule), that can increase T cell functionality in tumors, such as a PD-L1/PD-L2-expressing tumor. Also disclosed herein is a therapy that utilizes the PD-1 checkpoint blockade in a cell-intrinsic fashion, which simultaneously minimizes autoimmune side effects and provides increased on-tumor functionality. The present application discloses recombinant T cell co-stimulatory receptors (RTCRs) based on T cell co-receptors or chimeric antigen receptors (CARs) comprising a functionally optimized intracellular co-stimulatory domain of the present application. The present application also discloses T cell co-receptors comprising a functionally optimized intracellular co-stimulatory domain and a PD-1 extracellular domain (i.e., PD-1 switch receptors or PD-1 based co-stimulatory molecules). The present application also discloses CD19 and B cell maturation Ag (BCMA) based CARs comprising a functionally optimized intracellular co-stimulatory domain that promotes CD19 and BCMA binding mediated T cell activation, proliferation, and tumor killing. The RTCRs disclosed in the present application can be used for evaluation of checkpoint targets, safety screening, and for development of pre-clinical animal models to evaluate the effectiveness of the combination of the functionally optimized intracellular co-stimulatory domain of the present application with any TCRs or CARs. Additional cell-intrinsic immune checkpoint inhibitors with the efficacious TCRs are also developed.
The present disclosure provides a recombinant T cell co-stimulatory receptor (RTCR), comprising: (a) an extracellular domain; (b) a transmembrane domain; and (c) a chimeric intracellular domain comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant intracellular signaling domain of a tumor necrosis factor receptor (TNFR) family protein.
The present disclosure provides a recombinant T cell co-stimulatory receptor (RTCR), comprising: (a) an extracellular domain; (b) a transmembrane domain; and (c) a chimeric intracellular domain comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain.
The present disclosure also provides a nucleic acid encoding the RTCR disclosed herein. The present disclosure also provides a vector comprising the nucleic acid disclosed herein. The present disclosure also provides a cell comprising the nucleic acid or the vector disclosed herein.
The present disclosure also provides a modified T lymphocyte (T cell), comprising: (a) a modification of an endogenous sequence encoding a T cell Receptor (TCR), wherein the modification reduces or eliminates a level of expression or activity of the TCR; and (b) a recombinant T cell co-stimulatory receptor (RTCR) disclosed herein.
The present disclosure also provides a composition comprising the RTCR disclosed herein. The present disclosure also provides a composition comprising the nucleic acid encoding the RTCR disclosed herein. The present disclosure also provides a composition comprising the vector comprising the nucleic acid disclosed herein. The present disclosure also provides a composition comprising the cell disclosed herein. The present disclosure also provides a composition comprising the modified T cell disclosed herein.
The present disclosure also provides a composition comprising a population of cells, wherein the population comprises a plurality of the cell comprising the nucleic acid encoding or a vector comprising the nucleic acid encoding the RTCR disclosed herein. The present disclosure also provides a composition comprising a population of cells, wherein the population comprises a plurality of the modified T cell disclosed herein.
The present disclosure provides a method of producing a plurality of modified T cells, wherein the method comprises: a) providing a plurality of primary T cells disclosed herein; b) providing a composition comprising the RTCR disclosed herein, the nucleic acid encoding the RTCR disclosed herein, or the vector comprising the nucleic acid encoding the RTCR disclosed herein; and c) introducing into the plurality of primary T cells of (a) the composition of (b), to produce a plurality of modified T cells under conditions that stably express the RTCR within the plurality of modified T cells. In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises a step of modifying an endogenous sequence encoding an endogenous T cell Receptor (TCR), wherein the modification reduces or eliminates a level of expression or activity of the endogenous TCR. In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises a step of modifying an endogenous sequence, wherein the modification reduces or eliminates a level of expression or activity of a major histocompatibility complex (MHC) class I (MHC-I). In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises: d) maintaining the plurality of modified T cells in a suitable cell culture media; and e) either: i) cryopreserving the plurality of modified T cells in a suitable cell freezing media; or ii) preparing the plurality of modified T cells for administering to a subject suffering from a disease or disorder.
The present disclosure also provides a method of treating a disease or disorder, comprising administering to a subject in need thereof a therapeutically effective number of the cell comprising the nucleic acid encoding or the vector comprising the nucleic acid encoding the RTCR disclosed herein, a therapeutically effective number of any one of the modified T cell disclosed herein, a therapeutically effective amount of any one of the compositions disclosed herein, or a therapeutically effective number of the plurality of modified T cells produced by the method disclosed herein.
The present disclosure also provides a chimeric co-stimulatory intracellular protein (CIP) comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant intracellular signaling domain of a tumor necrosis factor receptor (TNFR) family protein.
The present disclosure also provides a chimeric co-stimulatory intracellular protein (CIP) comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain.
Throughout the specification the term “comprising,” or variations such as “comprises” or “comprise,” will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
Throughout the specification the term “signal domain”, “signaling domain”, and “signal transduction domain”, are used interchangeably, unless the context dictates otherwise.
While the disclosure has been described in conjunction with the detailed description thereof, the foregoing description is intended to illustrate and not limit the scope of the disclosure, which is defined by the scope of the appended claims. Other aspects, advantages, and modifications are within the scope of the following claims.
The patent and scientific literature referred to herein establishes the knowledge that is available to those with skill in the art. All United States patents and published or unpublished United States patent applications cited herein are incorporated by reference. All published foreign patents and patent applications cited herein are hereby incorporated by reference. Genbank and NCBI submissions indicated by accession number cited herein are hereby incorporated by reference. All other published references, documents, manuscripts and scientific literature cited herein are hereby incorporated by reference.
Provided herein are novel chimeric co-stimulatory intracellular domains. The chimeric co-stimulatory intracellular domains provided herein comprise: (a) a first signaling domain that is based on the intracellular signaling domain of a CD28 family protein; and (b) at least a second signaling domain that comprises a mutant intracellular signaling domain of a TNFR family protein.
The CD28 family proteins have a single extracellular immunoglobulin variable-like (IgV) domain followed by a short cytoplasmic tail. Members of the CD28 family proteins include CD28, CD28H, inducible costimulator (ICOS), cytotoxic T lymphocyte-associated antigen 4 (CTLA-4, CD152), program death-1 (PD-1), and B- and T-lymphocyte attenuator (BTLA). CD28, CD28H and ICOS are co-stimulatory proteins that are expressed on T cells that promote activation, high levels of cytokine/chemokine expression, resistance to apoptosis, and proliferation of T cells.
The Tumor Necrosis Factor Receptor (TNFR) family proteins includes TNFR1 (tumor necrosis factor receptor 1/TNFRSF1A), TNFR2 (tumor necrosis factor receptor 2/TNFRSF1B), lymphotoxin β receptor/TNFRSF3, OX40/TNFRSF4, CD40/TNFRSF5, Fas/TNFRSF6, decoy receptor 3/TNFRSF6B, CD27/TNFRSF7, CD30/TNFRSF8, 4-1BB/TNFRSF9, DR4 (death receptor 4/TNFRSF10A), DR5 (death receptor 5/TNFRSF10B), decoy receptor 1/TNFRSF10C, decoy receptor 2/TNFRSF10D, RANK (receptor activator of NF-kappa B/TNFRSF11A), OPG (osteoprotegerin/TNFRSF11B), DR3 (death receptor 3/TNFRSF25), TWEAK receptor/TNFRSF12A, TACI/TNFRSF13B, BAFF-R (BAFF receptor/TNFRSF13C), HVEM (herpes virus entry mediator/TNFRSF14), nerve growth factor receptor/TNFRSF16, BCMA (B cell maturation antigen/TNFRSF17, GITR (glucocorticoid-induced TNF receptor/TNFRSF18), TAJ (toxicity and JNK inducer/TNFRSF19), RELT/TNFRSF19L, DR6 (death receptor 6/TNFRSF21), TNFRSF22, TNFRSF23, ectodysplasin A2 isoform receptor/TNFRS27 and ectodysplasin 1-anhidrotic receptor. Interactions between tumor necrosis factor superfamily (TNFSF) ligands and TNF receptor superfamily (TNFRSF) receptors provide the co-stimulatory signals that control the survival, proliferation, differentiation, and effector function of immune cells. Depending upon the specific intracellular signal induced by TNFRSF members, they can be categorized into three groups—death domain (DD)-containing receptors, decoy receptors, and TNF receptor-associated factor (TRAF)-binding receptors. Some TNFRSFs such as TNFR-1, Fas, DR3, DR4, DR5, and DR6, contain their own DDs and/or interact with other cytoplasmic DD-containing adaptor molecules. Some other TNFRSFs, such as TNFR-2, CD27, CD30, CD40, glucocorticoid-induced TNFR family-related gene (GITR), Fn1, lymphotoxin beta-receptor (LTβR), OX40, receptor activator of NF-κB (RANK), and XEDAR, lack a DD and contain motifs with four to six amino acids called TRAF-interacting motifs (TIMs) which recruits TRAF proteins. TRAF proteins are adaptor molecules that activate multiple downstream signaling pathways such as NF-κB, Janus kinase (JNK), ERK, p38MAPK, and PI3K that help in cell survival, proliferation, and cytokine production. In some embodiments, the first signaling domain that is based on the intracellular signaling domain of a CD28 family protein is selected from a CD28 protein, ICOS protein or a combination thereof. In some embodiments, the at least second signaling domain is based on a mutant of the intracellular signaling domain of a TNFR family protein is selected from CD137 (4-1BB) and CD134 (OX-40).
Provided herein are novel chimeric co-stimulatory intracellular domains based on the third-generation co-stimulatory domains of the present application. Reduced surface expression is a major hindrance in the development of chimeric co-stimulatory proteins for therapeutic purposes. The present disclosure provides novel chimeric co-stimulatory intracellular domains generated through mutations in the third-generation co-stimulatory domains of the present application that are both highly expressed and highly functional compared to the current second-generation and third-generation chimeric receptors that are effective in inducing costimulation. The chimeric co-stimulatory intracellular domains provided herein comprise: (a) a first signaling domain that is based on the intracellular signaling domain of a CD28 protein, ICOS protein or a combination thereof; and (b) at least a second signaling domain that is a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain. In some embodiments, the mutant CD137 (4-1BB) intracellular domain or the mutant CD134 (OX-40) intracellular domain comprises a deletion, an insertion or a substitution of one or more amino acids in the membrane proximal portion of the CD137 or CD134 intracellular domain. In some embodiments, the one or more amino acids in the membrane proximal portion are ubiquitination sites involved in the ubiquitination and degradation of the CD137 or CD134 protein. In some embodiments, the mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain comprises substitution or deletion of one or more lysine residues in the membrane proximal portion of the CD137 or CD134 intracellular domain. In some embodiments, the lysine residues are ubiquitination sites involved in the ubiquitination and degradation of the CD137 or CD134 protein. In some embodiments, the chimeric co-stimulatory intracellular domains provided herein further comprise a third signaling domain. In some embodiments, the third signaling domain can be based on a CD3 signaling domain.
In some embodiments, the novel co-stimulatory intracellular domain of the present application can be combined or fused in frame with the extracellular domain of any known co-stimulatory protein, a cell intrinsic immune checkpoint inhibitor, a chimeric antigen receptor, an antibody or a portion thereof, a ligand or a receptor thereof, a cytokine or a receptor thereof, a chemokine or a receptor thereof or a complement receptor, to form a functional recombinant T cell co-stimulatory receptor (RTCR). In some embodiments, the RTCR can be expressed in a cell in combination with another T cell receptor (TCR), chimeric antigen receptor or co-stimulatory protein. A RTCR comprising the novel co-stimulatory intracellular domain disclosed herein, when co-expressed with a TCR in a T cell, significantly increases the cell surface expression of the RTCR, and/or cell proliferation, activation, persistence, cytokine production and/or effector function of the T cell, as compared to a second-generation co-stimulatory receptor.
A highly efficacious adoptive cell therapeutic targeting a shared and safe tumor associated antigen and comprising a cell-intrinsic inhibitor of T cell exhaustion able to withstand the suppressive tumor microenvironment is described in the present application. An exemplary chimeric molecule expressing the extracellular domain of PD-1 and a functionally optimized chimeric intracellular co-stimulatory domain are disclosed herein. Modified T cells expressing the chimeric molecule of the present disclosure are generated to show the efficacy of the chimeric molecule in enhancing T cell stimulation, activation and proliferation. Both molecules are expressed on the same T cell, creating a TCR-T product that responds robustly to tumor cells expressing both the cognate MHC/peptide complex and high levels of PD-L1//PD-L2.
For exemplification, a cell-intrinsic inhibitor of T cell exhaustion is developed by co-expression of third generation chimeric PD-1 receptors combined with T cell receptors targeting tumor associated or specific antigens to enhance the efficacy of T cell mediated killing of tumor cells. The 3rd generation chimeric receptors disclosed herein can be used in combination with any endogenous or modified T cell receptors as well as with chimeric artificial receptors (CARs). The results herein show that the 3rd-generation co-stimulatory molecules disclosed herein produces T cells with high physiological avidity and persistent proliferative potential, while negating negative signaling by PD-1, delivering instead co-stimulatory signals in a PD-L1 rich environment. The novel co-stimulatory molecule can be co-expressed with a tumor associated antigen (TAA) specific TCR and used to target PD-L1/PD-L2 and the TAA expressing tumors. This demonstrates that the synergistic effect between the TCR activation and co-stimulatory molecule significantly increases the therapeutic window and generate a potentially more effective candidate for clinical investigation. In the disclosure described below, the design of the third-generation chimeric proteins is systematically optimized, to further validate in vitro the improved anti-cancer effectiveness, and to investigate the in vivo anti-tumor efficacy. Co-stimulatory molecules incorporating the extracellular domains of PD-1 with the intracellular domains of CD28, ICOS, CD134, and CD137 alone and in various combinations are generated. These sequences are optimized for surface expression and functionality by incorporating key mutations/deletions within the signaling domain of the chimeric receptors, focusing on the junction between CD28 and TNF-receptor family signaling domains. The functionality of these receptors is tested based on surface expression, in-vitro signaling, in-vitro T cell conjugation, cytokine production, proliferation, and cytotoxicity using a combination of soluble and plate-bound antibody stimulations and K562 target cells expressing PD-L1 or A375 tumor cells.
The disclosure herein provides an approach in which the TCR-T product co-expresses a chimeric co-stimulatory molecule alongside a recombinant TAA-specific TCR or an endogenous TCR. This approach allows for the targeting of the tumor associated antigen with simultaneous antagonization of checkpoint inhibition and delivery of co-stimulatory signals to the transfused T cell product. This approach not only results in a much-improved product, but also help to develop a universal function-boosting platform for additional TCR-T products.
The key technical challenge hindering the clinical adoption of 3rd-generation CARs combining the two domains has been the abnormally low expression of chimeric proteins at the cell surface and associated diminished functionality (Zhao, 2015, Guedan, 2018). This has held true in co-stimulatory molecules where the combination of the CD28 and CD137 signaling domains resulted in a poorly expressed and non-functional receptor (Ankri, 2013). Disclosed herein is a switch receptor/co-stimulatory molecule based on the ICOS/CD137 signaling domain and optimized for surface expression that is a significant improvement over past trials using the CD28 signaling domain alone, mediating both increased effector function and persistence of adoptively transferred cells. Results described herein show that the 3rd-generation co-stimulatory molecule disclosed herein produces T cells with high physiological avidity and persistent proliferation potential, while negating negative signaling by PD-1, delivering instead a co-stimulatory signal in a PD-L1 rich environment. The novel switch receptor/co-stimulatory molecule disclosed herein can be co-expressed with an endogenous TCR or a TAA specific TCR and used to target PD-L1/PD-L2 expressing tumors. This demonstrates that the synergistic effect between the TCR activation and co-stimulatory molecule significantly increases the therapeutic window for a potentially more effective candidate for clinical investigation.
Tumor associated antigens and tumor specific antigens allow for the immunological targeting of the tumor with relatively minimal risk of off-tumor, on-target side effects. Tumor cells can upregulate these antigens which can then be targeted by the human immune response or ACT. The disclosure herein combines a co-stimulatory molecule based on 3rd-generation CARs that exhibits superior functionality to CD28-based receptors with a new affinity enhanced TCR targeting TAAs to generate a TCR-T product that resists the suppressive function of the TME.
The present disclosure provides a recombinant T cell co-stimulatory receptor (RTCR), comprising: (a) an extracellular domain; (b) a transmembrane domain; and (c) a chimeric intracellular domain comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant intracellular signaling domain of a tumor necrosis factor receptor (TNFR) family protein.
In some embodiments, the mutant intracellular signaling domain of a TNFR family protein is any one of a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain.
The present disclosure provides a recombinant T cell co-stimulatory receptor (RTCR), comprising: (a) an extracellular domain; (b) a transmembrane domain; and (c) a chimeric intracellular domain comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain.
Unless indicated otherwise, the terms “co-stimulatory molecule”, “costimulatory molecule”, “co stimulatory molecule”, “co-stimulatory protein”, “costimulatory protein”, “co stimulatory protein”, “co-stimulatory receptor”, “costimulatory receptor” “co stimulatory receptor” and “switch receptor” are used interchangeably, to refer to the recombinant T cell co-stimulatory receptors (RTCRs) comprising the novel chimeric co-stimulatory intracellular domains of the present application. These terms may be used in combination with terms such as “recombinant T cell”, “recombinant”, “chimeric T cell”, and “chimeric”, to refer to the RTCRs of the present application.
As described herein, “a recombinant T cell co-stimulatory receptor” or “switch receptor” of the present disclosure is a “costimulatory molecule” “co-stimulatory receptor” or “co-stimulatory protein” generated by operably linking an extracellular domain to an intracellular chimeric intracellular protein of the present disclosure.
“CD137” as described herein is a member of the tumor necrosis factor (TNF) receptor family, and also referred to as 4-1BB, CD137, tumor necrosis factor receptor superfamily member 9 (TNFRSF9) and induced by lymphocyte activation (ILA). As described herein, the terms “CD137”, “4-1BB”, “4-1BB wt”, “4-1BB wild type”, “BB”, “BB wt” and “BB wild type” are used interchangeably throughout, for example, when describing constructs or co-stimulatory molecules of the present application, unless otherwise indicated.
In some embodiments, the CD137 intracellular domain can be from a mammalian CD137. In some embodiments, the mammalian CD137 can be a human CD137, a mouse CD137, a rat CD137 or a monkey CD137. In some embodiments, the CD137 intracellular domain can be from a human CD137, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the human CD137 amino acid sequence according to GenBank Accession Nos: U03397, AAA62478, NP_001552, Q07011, AAH06196 and XP_006710681. In some embodiments, the CD137 intracellular domain can be from a mouse CD137, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the mouse CD137 amino acid sequence according to GenBank Accession Nos: NP_001070977.1, NP_001070976.1, NP_035742.1, NP_033430.1, P20334.1, XP_011248530.1, XP_011248530.1, ABI30213.1, BAE32724.1 and AAH28507.1. In some embodiments, the CD137 intracellular domain can be from a rat CD137, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the rat CD137 amino acid sequence according to GenBank Accession Nos: NP_852049.1, NP_001020944.1, BAD99404.1, XP_008762504.1, XP_006239534.1, EDL81196.1, AAH97483.1, EHB16663.1, EHB16663.1, KF038282.1, XP_010618177.1, XP_029414155.1, XP_029414154.1, XP_021099219.1 and XP_012888584.1. In some embodiments, the CD137 intracellular domain can be from a monkey CD137, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the monkey CD137 amino acid sequence according to GenBank Accession Nos: ABY47575.1, ABI30212.1, ABY47577.1, ABY47576.1 and ABY47578.1.
In some embodiments, the CD137 intracellular domain, as described herein, comprises an amino acid sequence starting from the amino acid position 214 to the last amino acid at the C-terminal end of the amino acid sequence of the human CD137 protein, described herein. In some embodiments, the CD137 intracellular domain, as described herein, comprises an amino acid sequence starting from the amino acid position 215 to the last amino acid at the C-terminal end of the amino acid sequence of the mouse CD137 protein, described herein.
In some embodiments, the mutant CD137 intracellular domain described herein is from any one of the CD137 proteins as described herein, comprising one or more mutation(s), wherein the mutation can be addition/insertion, deletion/truncation or substitution/replacement of one or more amino acids within the amino acid sequence of the CD137 protein. In some embodiments, the mutant CD137 intracellular domain described herein is any one of the CD137 intracellular domain sequences, as described herein, comprising one or more mutation(s), wherein the mutation can be addition/insertion, deletion/truncation or substitution/replacement of one or more amino acids within the amino acid sequence of the CD137 intracellular domain. In some embodiments, the mutant CD137 intracellular domain described herein is a CD137 intracellular domain as described herein, comprising a deletion or substitution of one or more amino acids within the amino acid sequence of the CD137 intracellular domain that can be targets for ubiquitination. In some embodiments, the mutant CD137 intracellular domain described herein is a CD137 protein as described herein, comprising a deletion or substitution, of one or more lysine residues within the amino acid sequence of the CD137 intracellular domain that can be targets for ubiquitination. In some embodiments, the mutant CD137 intracellular domain described herein is a CD137 protein as described herein, comprising a deletion or substitution, of one, two, three or four lysine residues within the amino acid sequence of the CD137 intracellular domain that can be targets for ubiquitination. In some embodiments, the lysine residues within the amino acid sequence of the CD137 intracellular domain described herein, that can be deleted or substituted are at amino acid positions 214, 218, 219 and/or 225 of the CD137 intracellular domain.
In some embodiments, the mutant CD137 intracellular domain can be a truncated CD137 intracellular domain. A truncated CD137 intracellular domain as described herein can be any one of the CD137 proteins described herein, in which a continuous stretch of more than one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, twenty, twenty-five, fifty, hundred, two hundred or more amino acids are deleted from the N-terminus the CD137 protein as described herein. A truncated CD137 intracellular domain as described herein can be any one of the CD137 intracellular domain sequences described herein, in which a continuous stretch of more than one, two, three, four, five, six, seven, eight, nine, ten or more amino acids are deleted from the N-terminus the CD137 intracellular domain as described herein. In some embodiments, the amino acids deleted from the N-terminus the CD137 intracellular domain includes one or more proximal polybasic amino acids of the CD137 intracellular domain.
In some embodiments, the mutant CD137 intracellular domain can be a truncated CD137 intracellular domain. In some embodiments, the truncated CD137 intracellular domain comprises an amino acid sequence according to amino acid position 13 to amino acid position 42 of the CD137 intracellular domain, of the present disclosure. In some embodiments, the truncated CD137 intracellular domain comprises a deletion of a continuous stretch of one, two, three, four, five, six, seven, eight, nine, ten or more amino acids from the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the truncated CD137 intracellular domain comprises a deletion of one, two, three, four, five, six, seven, eight, nine, ten or more amino acids from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the truncated CD137 intracellular domain comprises a deletion of amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the CD137 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 1.
In some embodiments, the truncated CD137 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 3. In some embodiments, the truncated CD137 intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 3.
A truncated CD137 intracellular domain as described herein, is referred to as “truncated CD137”, “CD137t”, “truncated 4-1BB”, “4-1BBt”, “truncated BB” or “BBt” interchangeably throughout, for example, when describing constructs or co-stimulatory molecules of the present application, unless otherwise indicated. In some embodiments, the mutant CD137 intracellular domain comprises a deletion of one, two, three or four lysine residue(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain comprises one or more lysine mutation(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain comprises one or more lysine mutation(s) at amino acid positions selected from amino acid positions 1, 5, 6 and 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the one or more lysine mutation(s) are lysine to alanine mutations. In some embodiments, the CD137 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 1.
In some embodiments, the mutant CD137 intracellular domain comprises a deletion of one or more proximal basic amino acids from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain comprises one or more proximal basic amino acid mutation(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain comprises one or more proximal basic amino acid mutation(s) at amino acid positions selected from amino acid positions 1, 2, 3, 4, 5 and 6 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain comprising one or more proximal basic amino acid mutation(s), of the present disclosure, further comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the lysine mutation is a lysine to alanine mutation. In some embodiments, the CD137 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 1.
“CD134” as described herein is a member of the tumor necrosis factor (TNF) receptor family, and also referred to as OX-40, ACT35, IMD16, TXGP1L and tumor necrosis factor receptor superfamily member 4 (TNFRSF4). As described herein, the terms “CD134”, “OX-40”, “OX40”, “OX-40 wild type”, “OX-40 wt”, “OX40 wild type”, “OX40 wt”, “40”, “40 wild type” and “40 wt” are used interchangeably throughout, for example, when describing constructs or co-stimulatory molecules of the present application, unless otherwise indicated.
In some embodiments, the CD134 intracellular domain can be from a mammalian CD134. In some embodiments, the mammalian CD134 can be a human CD134, a mouse CD134, a rat CD134 or a monkey CD134. In some embodiments, the CD134 intracellular domain can be from a human CD134, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the human CD134 amino acid sequence according to GenBank Accession Nos: NP_003318, AA105071, AA105073, XP_016857721.1, XP_016857720.1, XP_011540377.1, XP_011540379.1, XP_011540378.1, XP_011540376.1, P43489.1, NP_001284491.1, NP_003317.1, EAW56278.1 and CAB96543.1. In some embodiments, the CD134 intracellular domain can be from a mouse CD134, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the mouse CD134 amino acid sequence according to GenBank Accession Nos: NP_035789.1, AAI39267.1, AAI39240.1, NP_033478.1, XP_006538787.3, P47741.1, EDL15067.1, CAA79772.1, CAA59476.1, XP_021017102.2, and XP_021056714.1. In some embodiments, the CD134 intracellular domain can be from a rat CD134, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the rat CD134 amino acid sequence according to GenBank Accession Nos: NP_035789.1, NP_037181.1, P15725.1, EDL81353.1, CAB96543.1, and CAA34897.1. In some embodiments, the CD134 intracellular domain can be from a monkey CD134, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the monkey CD134 amino acid sequence according to GenBank Accession Nos: XP_010375483.1, XP_001090870.1, XP_021523144.1, XP_017750744.1, XP_003939714.1, XP_026313229.1, XP_026313228.1, XP_003890998.2, XP_025242473.1, XP_011768627.1, XP_005545179.1, XP_011886513.1, XP_011886512.1, XP_011857387.1 and XP_011811769.1.
In some embodiments, the CD134 intracellular domain, as described herein, comprises an amino acid sequence starting from amino acid position 241 to the last amino acid at the C-terminal end of the amino acid sequence of any one of the human CD134 protein, described herein. In some embodiments, the CD134 intracellular domain, as described herein, comprises an amino acid sequence starting from the amino acid position 236 to the last amino acid at the C-terminal of the amino acid sequence of the mouse CD134 protein, described herein.
In some embodiments, the mutant CD134 intracellular domain described herein is from any one of the CD134 proteins as described herein, comprising one or more mutation(s), wherein the mutation can be addition/insertion, deletion/truncation or substitution/replacement of one or more amino acids within the amino acid sequence of the CD134 protein. In some embodiments, the mutant CD134 intracellular domain described herein, is any one of the CD134 intracellular domain sequences as described herein, comprising one or more mutation(s), wherein the mutation can be addition/insertion, deletion/truncation or substitution/replacement of one or more amino acids within the amino acid sequence of the CD134 intracellular domain. In some embodiments, the mutant CD134 intracellular domain described herein is a CD134 intracellular domain as described herein, comprising a deletion or substitution of one or more amino acids within the amino acid sequence of the CD134 intracellular domain that can be targets for ubiquitination. In some embodiments, the mutant CD134 intracellular domain described herein is a CD134 protein as described herein, comprising a deletion or substitution, of one or more lysine residues within the amino acid sequence of the CD134 intracellular domain that can be targets for ubiquitination. In some embodiments, the mutant CD134 intracellular domain described herein is a CD134 protein as described herein, comprising a deletion or substitution, of one or two lysine residues within the amino acid sequence of the CD134 intracellular domain that can be targets for ubiquitination. In some embodiments, the lysine residues within the amino acid sequence of the CD134 intracellular domain described herein, that can be deleted or substituted are at amino acid positions 252 and/or 276 of the CD134 intracellular domain.
In some embodiments, the mutant CD134 intracellular domain can be a truncated CD134 intracellular domain. A truncated CD134 intracellular domain as described herein can be any one of the CD134 proteins described herein, in which a continuous stretch of more than one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, twenty, twenty-five, fifty, hundred, two hundred or more amino acids are deleted from the N-terminus the CD137 protein as described herein. A truncated CD134 intracellular domain as described herein can be any one of the CD134 intracellular domain sequences described herein, in which a continuous stretch of more than one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen or more amino acids are deleted from the N-terminus the CD134 intracellular domain as described herein. In some embodiments, the amino acids deleted from the N-terminus the CD134 intracellular domain includes one or more proximal polybasic amino acids of the CD134 intracellular domain.
In some embodiments, the truncated CD134 intracellular domain comprises an amino acid sequence according to amino acid position 15 to amino acid position 37 of a CD134 intracellular domain, of the present disclosure. In some embodiments, the truncated CD134 intracellular domain comprises a deletion of a continuous stretch of one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen or more amino acids from the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the truncated CD134 intracellular domain comprises a deletion of one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen or more amino acids from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the truncated CD137 intracellular domain comprises a deletion of amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the CD134 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 4.
In some embodiments, the mutant CD134 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 6. In some embodiments, the mutant CD134 intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 6.
A truncated CD134 intracellular domain as described herein, is referred to as “truncated CD134”, “CD134t”, “truncated OX-40”, “truncated OX40”, “OX-40t”, “OX40t” and “40t” are used interchangeably throughout, for example, when describing constructs or co-stimulatory molecules of the present application, unless otherwise indicated.
In some embodiments, the mutant CD134 intracellular domain comprises a deletion of a lysine residue from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the mutant CD134 intracellular domain comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the lysine mutation is a lysine to alanine mutation. In some embodiments, the CD134 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 4.
In some embodiments, the mutant CD134 intracellular domain comprises a deletion of one or more proximal basic amino acids from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the mutant CD134 intracellular domain comprises one or more proximal basic amino acid mutation(s) from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the mutant CD134 intracellular domain comprises one or more proximal basic amino acid mutation(s) at amino acid positions selected from amino acid positions 1, 2, and 5 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments, the mutant CD137 intracellular domain further comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments, the CD134 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 4.
KRGRKKLLYIFKQPFMRPVQTTQEED
RKKFPHIFKQPFKKTTGAAQEEDACS
RRDQRLPPDAHKPPGGGSFRTPIQEE
RKAWRLPNTPKPCWGNSFRTPIQEEH
QRRKYRSNKGESPVEPAEPCHYSCPR
EEEGSTIPIQEDYRKPEPACSP
In some embodiments, the chimeric intracellular domain comprises a first signal transduction domain derived from a protein of the CD28 family. In some embodiments, the first signal transduction domain derived from any one of CD28, CD28H, ICOS or a combination thereof.
In some embodiments, the chimeric intracellular domain comprises a first signal transduction domain derived from ICOS protein.
The “ICOS protein” as described herein is an inducible T cell co-stimulatory protein, also referred to as AILIM, CD278, CCLP, CRP-1, H4, Ly115 and CVID1. In some embodiments, the ICOS intracellular domain can be from a mammalian ICOS. In some embodiments, the mammalian ICOS can be a human ICOS, a mouse ICOS, a rat ICOS or a monkey ICOS. In some embodiments, the ICOS intracellular domain can be from a human ICOS, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the human ICOS amino acid sequence according to GenBank Accession Nos: AAH28006.1, NP_036224.1, AIC51287.1, AIC60036.1, NP_036224.1, Q9Y6W8.1, EAW70357.1, EAW70356.1, EAW70355.1, AAL40934.1, AAL40933.1, CAC06612.1, AAX93073.1, AAM00909.1, AAH28210.1 and CAD59742.1. In some embodiments, the ICOS intracellular domain can be from a mouse ICOS, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the mouse ICOS amino acid sequence according to GenBank Accession Nos: NP_059508.2, Q9WVS0.2, EDL00161.1, CAM13242.1, CAM13241.1, CAB71153.1, AAG48732.1, AAH34852.1, XP_006496203.1, XP_006496202.1, XP_006496201.1, ACX50464.1, ACX50463.1, AAH28006.1, XP_021052880.1, XP_029334968.1 and XP_021030282.1. In some embodiments, the ICOS intracellular domain can be from a rat ICOS, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the rat ICOS amino acid sequence according to GenBank Accession Nos: NP_072132.1, Q9R1T7.1, XP_008765358.1, XP_006245100.1, XP_006245099.1, EDL98922.1, EDL98921.1, XP_038940099.1, XP_032755449.1, XP_017457364.1, XP_006256324.1, XP_006256323.1, XP_006256322.1, XP_029425757.1, XP_029425757.1, XP_021119236.1, XP_012929934.1, XP_012867370.1 and XP_012867363.1. In some embodiments, the ICOS intracellular domain can be from a monkey ICOS, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the monkey ICOS amino acid sequence according to GenBank Accession Nos: XP_007964137.1, NP_001253918.1, XP_010350939.1, XP_012301785.1, XP_012301784.1, XP_017739861.1, XP_010334714.1, XP_003925677.1, AFH29328.1, XP_008997520.1, XP_023075107.1, XP_023075099.1, XP_021779593.1, XP_003907887.1, XP_025260988.1, XP_025260987.1, XP_025260986.1, XP_011716287.1, XP_011716285.1, XP_005574075.1, XP_011903009.1, XP_011805288.1, XP_011805287.1, XP_011847867.1, XP_011847866.1, XP_017392362.1, XP_033086489.1, XP_032134414.1, XP_032134413.1, and XP_017802331.1.
In some embodiments, the human ICOS intracellular domain as described herein, comprises an amino acid sequence from amino acid position 133 to the last amino acid at the C-terminus of the amino acid sequence of the human ICOS protein, described herein. In some embodiments, the human ICOS intracellular domain as described herein, comprises an amino acid sequence from an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the amino acid position 133, to the last amino acid at the C-terminus of the amino acid sequence of the human ICOS protein, described herein. In some embodiments, the human ICOS intracellular domain as described herein, comprises an amino acid sequence from amino acid position 133 to an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the last amino acid at the C-terminus of the amino acid sequence of the human ICOS protein, described herein. In some embodiments, the human ICOS intracellular domain as described herein, comprises an amino acid sequence from an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the amino acid position 133, to an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the last amino acid at the C-terminus of the amino acid sequence of the human ICOS protein, described herein.
In some embodiments, the human ICOS(28) intracellular domain as described herein, comprises a portion of the ICOS domain amino acid sequence from amino acid position 133 to amino acid position 183, and a portion of the ICOS domain amino acid sequence from amino acid position 184 to the last amino acid at the C-terminus of the amino acid sequence of the human ICOS protein, described herein. In some embodiments, the human ICOS(28) intracellular domain as described herein, comprises a portion of the ICOS domain amino acid sequence from an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the amino acid position 133, to amino acid position 183 of the human ICOS protein, described herein. In some embodiments, the human ICOS(28) intracellular domain as described herein, comprises a portion of the ICOS domain amino acid sequence from amino acid position 133, to an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids C-terminus to the amino acid position 183 of the human ICOS protein, described herein. In some embodiments, the human ICOS(28) intracellular domain as described herein, comprises a portion of the ICOS domain amino acid sequence from an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids N-terminus to the amino acid position 133, to an amino acid position at one, two, three, four, five, six, seven, eight, nine, ten or more amino acids C-terminus to the amino acid position 183 of the human ICOS protein, described herein.
The “CD28 protein”, also referred to as Tp44, is a constitutively expressed receptor for CD80 (B7.1) and CD86 (B7.2) proteins on naïve T cells and is important for T cell activation. In some embodiments, the CD28 intracellular domain can be from a mammalian CD28. In some embodiments, the mammalian CD28 can be a human CD28, a mouse CD28, a rat CD28 or a monkey CD28. In some embodiments, the CD28 intracellular domain can be from a human CD28, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the human CD28 amino acid sequence according to GenBank Accession Nos: P10747.1, NP_001230007.1, NP_001230006.1, NP_006130.1, EAW70350.1, EAW70349.1, EAW70348.1, EAW70347.1, AIC48451.1, CAC29237.1, AAA51945.1, AAA51944.1, AAL40931.1, AAF33794.1, AAF33793.1, AAF33792.1, XP_011510499.1, XP_011510497.1, XP_011510496.1, AAI12086.1, AAH93698.1, ABK41938.1, AAY24123.1, CAD57003.1 and AAA60581. In some embodiments, the CD28 intracellular domain can be from a mouse CD28, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the mouse CD28 amino acid sequence according to GenBank Accession Nos: AAA37396.1, NP_031668.3, P31041.2, AAH64058.1, EDL00156.1, CAM13249.1, XP_036012281.1, XP_021054806.1, XP_021027481.1, XP_036015651.1, and XP_030104805. In some embodiments, the CD28 intracellular domain can be from a rat CD28, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the rat CD28 amino acid sequence according to GenBank Accession Nos: CAA39003.1, NP_037253.2, P31042.1, XP_008765300.1, EDL98926.1, XP_032755445.1, XP_034354910.1, XP_019061859.2, XP_008844474.1, XP_004851403.1 and XP_012865504.1. In some embodiments, the CD28 intracellular domain can be from a monkey CD28, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the monkey CD28 amino acid sequence according to GenBank Accession Nos: ABH06891.1, ABH08508.1, ABH06892.1, ABH08509.1, ABQ09493.1, NP_001274262.1, NP_001036106.2, ABG77998.1, ABG77997.1 and XP_0149662071.
The “CD28H protein”, also referred to CD28 homolog, transmembrane and immunoglobulin domain-containing protein 2, has co-stimulatory activity in T cells by binding to B7H7. CD28H was initially described as a molecule involved in cell-cell interaction, cell migration, and angiogenesis of epithelial and endothelial cells (7, 8). CD28H has a single extracellular immunoglobulin domain followed by a transmembrane domain and a 110 amino acid-long cytoplasmic region. In some embodiments, the CD28 intracellular domain can be from a mammalian CD28H. In some embodiments, the mammalian CD28 can be a human CD28H, a mouse CD28H, a rat CD28H or a monkey CD28H. In some embodiments, the CD28H intracellular domain can be from a human CD28H, or an isoform or a variant thereof, comprising an amino acid sequence identical to any one of the human CD28H amino acid sequence according to GenBank Accession Nos: NP_001295161.1, NP_001162597.1, Q96BF3.2, XP_024307127.1 and XP_0168817731.
In some embodiments, the human CD28 intracellular domain as described herein, comprises an amino acid sequence from amino acid position 145 to the last amino acid at the C-terminus of the amino acid sequence of the human CD28 protein, described herein. In some embodiments, a portion of the human CD28 intracellular domain as described herein, can comprise an amino acid sequence from about amino acid position 195 to about amino acid position 212 of the amino acid sequence of the human CD28 protein, described herein. In some embodiments, a portion of the human CD28 intracellular domain as described herein, can comprises an amino acid sequence from one, two, three, four, five, six, seven, eight, nine or 10 or more amino acid amino acid position N-terminus to amino acid position 195 to one, two, three, four, five, six, seven, eight, nine or 10 or more amino acid amino acid position C-terminus amino acid position 220 of the amino acid sequence of the human CD28 protein, described herein.
In some embodiments, the first signal transduction domain derived from ICOS comprises an amino acid sequence according to SEQ ID NO: 9. In some embodiments, the first signal transduction domain derived from ICOS comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 9.
In some embodiments, the chimeric intracellular domain comprises a first signal transduction domain comprising a portion of a CD28 intracellular domain combined with an ICOS protein (ICOS (28) domain) according to SEQ ID NO: 9. In some embodiments, the ICOS (28) domain comprises the portion of CD28 intracellular domain inserted N-terminal to the PI-3K binding site of the ICOS protein according to SEQ ID NO: 9. In some embodiments, the ICOS (28) domain comprises the portion of CD28 inserted at 1, 2, 3, 4 or 5 amino acid position N-terminal to the PI-3K binding site of the ICOS protein according to SEQ ID NO: 9. In some embodiments, the ICOS(28) domain comprises the portion of CD28 inserted C-terminal to the PI-3K binding site of the ICOS protein according to SEQ ID NO: 9. In some embodiments, the ICOS(28) domain comprises the portion of CD28 inserted at 1, 2, 3, 4 or 5 amino acid position C-terminal to the PI-3K binding site of the ICOS protein according to SEQ ID NO: 9.
In some embodiments, the portion of CD28 is inserted at any amino acid position before amino acid position 48 within an ICOS protein of amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted at any amino acid position between amino acid position 1 and amino acid position 48, within an ICOS protein of amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 47 and amino acid position 48 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 46 and amino acid position 47 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 45 and amino acid position 46 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 44 and amino acid position 45 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 43 and amino acid position 44 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9.
In some embodiments, the portion of CD28 is inserted at any position after amino acid position 51 within an ICOS protein of amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted at any amino acid position between amino acid position 51 and amino acid position 67, within an ICOS protein of amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 51 and amino acid position 52 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 53 and amino acid position 54 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 54 and amino acid position 55 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 56 and amino acid position 57 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9. In some embodiments, the portion of CD28 is inserted between the amino acid position 57 and amino acid position 58 of an ICOS protein with the amino acid sequence according to SEQ ID NO: 9.
In some embodiments, the portion of CD28 of the ICOS(28) domain disclosed herein comprises an amino acid sequence according to amino acid position 51 to amino acid position 68 of a CD28 signaling domain according to SEQ ID NO: 10. In some embodiments, the portion of CD28 of the ICOS(28) domain disclosed herein comprises an amino acid sequence according to amino acid position 51 to amino acid position 76 of a full length CD28 signaling domain according to SEQ ID NO: 10. In some embodiments, the portion of CD28 of the ICOS(28) domain disclosed herein comprises an amino acid sequence according to amino acid position 45 to amino acid position 68 of a CD28 signaling domain according to SEQ ID NO: 10. In some embodiments, the portion of CD28 inserted within the ICOS(28) domain comprises a PRRP motif. In some embodiments, the portion of CD28 inserted within the ICOS(28) domain comprises an amino acid sequence according to SEQ ID NO: 11. In some embodiments, the portion of CD28 inserted within the ICOS(28) domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 11.
In some embodiments, the ICOS(28) domain comprises an amino acid sequence according to SEQ ID NO: 12. In some embodiments, the ICOS(28) comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 12.
In some embodiments, the chimeric intracellular domain comprises a first signal transduction domain derived from CD28. In some embodiments, the first signal transduction domain derived from CD28 comprises an amino acid sequence according to SEQ ID NO: 10. In some embodiments, the first signal transduction domain derived from CD28 comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 10.
A signal transduction domain derived from CD28 as described herein, is referred to as “CD28” or “28”, interchangeably throughout.
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNT
AKKSRLTDVTL
In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 13. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to any one of SEQ ID NOs: 14-17. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to any one of SEQ ID NOs: 14-17. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 14. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 14. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 15. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 15. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 16. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 16. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 17. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 17.
In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to any one of SEQ ID NOs: 120-129. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to any one of SEQ ID NOs: 120-129. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 120. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 120. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 121. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 121. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 122. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 122.
In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 123. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 123. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 124. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 124. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 125. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 125. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 126. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 126. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 127. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 127. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 128.
In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 128. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence according to SEQ ID NO: 129. In some embodiments, the chimeric intracellular domain comprises an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 129.
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTA
KKSRLTDVTLKRGRKKLLYIFKQPFMRPVQTTQEEDGCSCRFPEEEEGGCEL
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTA
KKSRLTDVTLQPFMRPVQTTQEEDGCSCRFPEEEEGGCEL
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTA
KKSRLTDVTLGGGSFRTPIQEEQADAHSTLA
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFM
TPRRPGP
TRKHYQPYAPP
RAVNTAKKSRLTDVTLQPFMRPVQTTQEEDGCSCRFPEEEEGGCEL
SQLCCQLKFWLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFM
TPRRPGP
TRKHYQPYAPP
RAVNTAKKSRLTDVTLGGGSFRTPIQEEQADAHSTLA
In some embodiments, the chimeric intracellular domain further comprises a third signal transduction domain. In some embodiments, the third signal transduction domain is derived from any one of a CD3 signaling domain, a CD2 signaling domain, or an interleukin 2 receptor binding (IL-2RB) protein signaling domain. In some embodiments, the CD3 signaling domain is derived form a CD3ζ or a CD3ε domain or a combination thereof.
In some embodiments, the chimeric intracellular domain further comprises a third signal transduction domain derived from a CD3ζ protein. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3ζ protein of amino acid sequence according to SEQ ID NO: 18. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3ζ comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NOs: 18.
In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3 signaling domain comprising an amino acid sequence according to any one of SEQ ID NOs: 45, 46, 47 and 48. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3 comprising an amino acid sequence according to SEQ ID NO: 45. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3 comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 45. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD3ζ comprising an amino acid sequence according to SEQ ID NO: 46. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD3ζ comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 46. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD3ε comprising an amino acid sequence according to SEQ ID NO: 47. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD3ε comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 47. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a combination of a CD3ε and a truncated CD3ζ domains (CD3ζε domain). In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3ζε comprising an amino acid sequence according to SEQ ID NO: 48. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a CD3ζε comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 48.
In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a mutant CD2 signaling domain. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain comprising an amino acid sequence according to SEQ ID NO: 49. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 49.
In some embodiments, the third signal transduction domain of the chimeric intracellular domain is an IL-2RB protein signaling domain comprising an amino acid sequence according to SEQ ID NO: 50. In some embodiments, the third signal transduction domain of the chimeric intracellular domain is an IL-2RB protein signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 50.
In some embodiments, the chimeric intracellular domain further comprises a fourth signal transduction domain. In some embodiments, the fourth signal transduction domain is derived from any one of a CD3 signaling domain, a CD2 signaling domain or an interleukin 2 receptor binding (IL-2RB) protein signaling domain or a combination thereof, wherein the third and the fourth signal transduction domain are not identical.
In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a CD3 signaling domain comprising an amino acid sequence according to any one of SEQ ID NOs: 45, 46, 47 and 48. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a CD3ζ comprising an amino acid sequence according to SEQ ID NO: 45. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a CD3ζ comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 45. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD3ζ comprising an amino acid sequence according to SEQ ID NO: 46. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD3ζ comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 46. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD3ε comprising an amino acid sequence according to SEQ ID NO: 47. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD3ε comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 47. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a combination of a CD3ε and a truncated CD3ζ domains (CD3ζε domain). In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a CD3ε comprising an amino acid sequence according to SEQ ID NO: 48. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a CD3ζε comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 48.
In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a mutant CD2 signaling domain. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain comprising an amino acid sequence according to SEQ ID NO: 49. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is a truncated CD2 signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 49.
In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is an IL-2RB protein signaling domain comprising an amino acid sequence according to SEQ ID NO: 50. In some embodiments, the fourth signal transduction domain of the chimeric intracellular domain is an IL-2RB protein signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 50.
The terms T cell, T-cell, t cell, t-cell, and T lymphocyte can be used interchangeably in the present disclosure.
In some embodiments, the extracellular domain comprises a protein or a portion thereof that binds to a target to induce activation and/or proliferation of an immune cell. In some embodiments, the extracellular domain comprises any one of: a) a component of a T cell Receptor (TCR) complex; b) a component of a chimeric antigen receptor (CAR); c) a component of a T cell co-receptor, wherein the T cell co-receptor is a T cell co-stimulatory protein or T cell inhibitory protein; d) a ligand that binds to a cell surface receptor or a component thereof; e) a component of a cytokine receptor; e) a component of a chemokine receptor; g) a component of an integrin receptor; h) a component of an endothelial cell surface protein receptor or a fragment thereof; i) a component of a neuronal guidance protein receptor; and f) a component of a complement receptor. In some embodiments, the component of the T cell co-receptor or the CAR is a component of PD1, CD28, CD2, OX-40, ICOS, CTLA-4, CD28, CD3, CD4, CD8, CD40L, Lag-3, Tim-3, or TIGIT, or a combination thereof. In some embodiments, the ligand or component of the T cell co-receptor or CAR binds to CD19, B cell maturation Ag (BCMA), PD-L1, PD-L2, IL-10, a proliferation-inducing ligand (APRIL), BAFF, OX-40L, ICOS-L, B7-1, B7-2, CD40, CD58, CD59, nectin, CD155, or CD112, or a combination thereof. In some embodiments, the cytokine receptor binds to IL-10, IL-27, TGF-β, IL-12, IL-1, IL-2, IL-4, IL-5, IFN-γ, or IFN-α/β, or a combination thereof. In some embodiments, the component of the complement receptor is a component of a single C3aR, C5aR, CD46/MCP, CD55, CD97, or DAF, or a combination thereof.
In some embodiments, the extracellular domain comprises an amino acid sequence of a component of any one of: a) a chemokine receptor; b) a cytokine receptor; c) a ligand for a cell surface receptor; d) an integrin receptor; e) a cell adhesion molecule or a receptor thereof; f) an endothelial cell surface protein receptor or a fragment thereof; g) a complement receptor; and h) a neuronal guidance protein receptor. In some embodiments, the extracellular domain comprises an amino acid sequence of a component of any one of epithelial growth factor receptor (EGFR), vascular-endothelial growth factor (VEGFR), chemokine receptor (CCR) 4, CCR5, CCR7, CCR10, Lymphocyte function-associated antigen-1 (LFA-1), leukocyte-specific β2 integrins (αLβ2, αMβ2, αXβ2, αDβ2), β7 integrins (α4β7 and αEβ7), extracellular matrix (ECM)-binding β1 integrins (α1-α6β1), L-selectin, or sialyl Lewisx.
In some embodiments, the extracellular domain is a protein, a peptide, a glycoprotein, an antibody or a fragment thereof. In some embodiments, the antibody or fragment thereof is a Fab fragment, a F(ab)2 fragment, a diabody, a nanobody, a sdAb, Fv, a VHH fragment, or a single chain Fv fragment.
In some embodiments, the extracellular domains comprises two or more binding sites for targeting two or more non-identical target antigens. In some embodiments, the extracellular domains comprises two or more binding sites for targeting two or more non-identical sites on a target antigen. In some embodiments, the extracellular domain comprises two antigen binding domains or fragments of a bispecific antibody. In some embodiments, the extracellular domain comprises a F(ab)2 fragment of a bispecific antibody. In some embodiments, the extracellular domain comprises two or more antigen binding domains or fragments of a multi-specific antibody.
In some embodiments, the extracellular domain binds to a target that is a tumor antigen, a pathogen associated protein, or an antigen associated with the disease or disorder that is a cancer, an autoimmune disease or disorder, an infectious disease, an inflammatory disease, a renal disease or disorder, a lung disease or disorder, a liver disease or disorder, a cardiovascular disease or disorder, a neurodegenerative disorder or disorder, or a metabolic disorder or disorder.
In some embodiments, the tumor antigen is any one of a tumor associated antigen (TAA), a tumor secreted antigen (TSA) or an unconventional antigen (UCA). In some embodiments, the TAA is any one of a cancer germline antigen (CGA), a Human endogenous retroviruses (HERVs), tissue differentiation antigen (TDA) and overexpressed tumor antigen. In some embodiments, the TSA is derived from any one of a mosaic single nucleotide variations (mSNVs), a insertion-deletion mutations (INDELs), gene fusions and viral oncoproteins. In some embodiments, the UCA is derived from non-coding regions of the genome or from coding regions of the genome. In some embodiments, the UCA is derived from aberrant transcription, translation, or post-translational modifications.
In some embodiments, the TAA is associated with a solid tumor or cancer or a hematologic cancer. In some embodiments, the TAA is associated with a solid tumor or cancer is selected from a sarcoma, a carcinoma or a lymphoma that manifests as, leads to, or is associated with a solid tumor.
In some embodiments, the TAA is associated with a sarcoma that is a soft tissue sarcoma or a bone sarcoma (osteosarcoma). In some embodiments, the TAA is associated with a sarcoma selected from vesicular rhabdomyosarcoma, vesicular soft tissue sarcoma, ameloblastoma, angiosarcoma, chondrosarcoma, chordoma, bright tissue sarcoma, dedifferentiated liposarcoma, Hyperplastic small round cell tumor of connective tissue, embryonic rhabdomyosarcoma, epithelioid fibrosarcoma, epithelioid hemangioendothelioma, epithelioid sarcoma; sensitive neuroblastoma (esthesioneuroblastoma), Ewing sarcoma, extrarenal rhabdomyosarcoma, extraosseous myxoid chondrosarcoma, extraosseous osteosarcoma, fibrosarcoma, giant cell tumor, hemangiopericytoma, infantile fibrosarcoma, inflammatory myofibroblastoma, Kaposi sarcoma, bone smooth muscle sarcoma, liposarcoma, osteosarcoma, malignant fibrous histiocytoma (WE), malignant fibrous histiocytoma (WE), malignant mesenchymal tumor, malignant peripheral nerve sheath tumor, mesenchymal chondrosarcoma, myxoid liposarcoma, myxoid inflammatory fibroblastic sarcoma, multiple tumors with perivascular epithelioid cell differentiation, osteosarcoma, extraperiosteal osteosarcoma, tumors with perivascular epithelial cell differentiation, periosteum osteosarcoma, polymorphic liposarcoma, polymorphic rhabdomyosarcoma, PNET/extraosseous Ewing's tumor, rhabdomyosarcoma, small cell osteosarcoma, single fibroids, synovial sarcoma or capillary dilated osteosarcoma.
In some embodiments, the TAA is associated with a carcinoma selected from basal cell carcinoma, squamous cell carcinoma, renal cell carcinoma, ductal carcinoma in situ (DCIS), invasive ductal carcinoma or adenocarcinoma. In some embodiments, the TAA is associated with a carcinoma selected from adenosquamous carcinoma, anaplastic carcinoma, large cell carcinoma, colorectal carcinoma, pancreatic carcinoma, nasopharyngeal carcinoma or small cell carcinoma.
In some embodiments, the TAA is associated with a solid tumor or cancer selected from anal cancer, appendix cancer; cholangiocarcinoma (i.e., biliary tract cancer), breast cancer, bladder cancer, brain tumor, breast cancer, cervical cancer, colon cancer, colorectal cancer, colon polyp, unidentified primary cancer (cup), esophagus cancer, eye cancer, tubal cancer, kidney cancer, liver cancer, lung cancer, medulloblastoma, melanoma, oral cancer, ovarian cancer, prostate cancer, pancreatic cancer, gastric cancer, testicular cancer, laryngeal cancer, thyroid cancer, uterine cancer, vaginal cancer, or vulvar cancer.
In some embodiments, the breast cancer is an invasive breast duct cancer, carcinoma in situ of the duct, invasive lobular carcinoma or lobular carcinoma in situ. In some embodiments, the pancreatic cancer is adenocarcinoma or islet cell carcinoma. In some embodiments, the colorectal cancer is adenocarcinoma. In some embodiments, colonic polyps are associated with familial adenomatous polyposis. In some embodiments, the bladder cancer is transitional cell bladder cancer, squamous cell bladder cancer, or adenocarcinoma. In some embodiments, the lung cancer is non-small cell lung cancer. In some embodiments, the non-small cell lung cancer is adenocarcinoma, squamous cell lung cancer, or large cell lung cancer. In some embodiments, the non-small cell lung cancer is large cell lung cancer. In some embodiments, the lung cancer is small cell lung cancer. In some embodiments, the prostate cancer is adenocarcinoma or small cell carcinoma. In some embodiments, the ovarian cancer is epithelial ovarian cancer. In some embodiments, the cholangiocarcinoma is proximal cholangiocarcinoma or distal cholangiocarcinoma.
In some embodiments, the TAA is associated with any one of the hematological cancer selected from a leukemia, a myeloma or a lymphoma. In some embodiments, the TAA is associated with a leukemia selected from acute leukemia, acute lymphoblastic leukemia (ALL), acute lymphocytic leukemia, a B cell, T cell or FAB ALL, acute myeloid leukemia (AML), acute myelogenous leukemia, chronic myelocytic leukemia (CML), chronic lymphocytic leukemia (CLL), hairy cell leukemia, acute promyelocytic leukemia (APL), mixed-lineage leukemia (MLL) or myelodysplastic syndrome (MDS).
In some embodiments, the TAA is associated with a myeloma that is a multiple myeloma. In some embodiments, the TAA is associated with a multiple myeloma selected from the hyperdiploid (HMM) or the non-hyperdiploid or hypodiploid subtypes of multiple myeloma. In some embodiments, the TAA is associated with a multiple myeloma selected from light chain myeloma, non-secretory myeloma, solitary plasmacytoma, extramedullary plasmacytoma, monoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myeloma (SMM), immunoglobulin D (IgD) myeloma or, immunoglobulin E (IgE) myeloma.
In some embodiments, the TAA is associated with a lymphoma that is a Hodgkin's lymphoma or a non-Hodgkin's lymphoma. In some embodiments, the TAA is associated with a non-Hodgkin's lymphoma. In some embodiments, the TAA is associated with a non-Hodgkin's lymphoma selected from a Small lymphocytic lymphoma (SLL), Lymphoplasmacytic lymphoma, Diffuse large cell lymphoma, Follicle center cell lymphoma, Burkitt's lymphoma, Burkitt-like lymphoma, Mantle cell lymphoma or Marginal zone B-cell lymphoma. In some embodiments, the TAA is associated with a lymphoma that is a Hodgkin's lymphoma. In some embodiments, the TAA is associated with a Hodgkin's lymphoma selected from nodular sclerosis classical Hodgkin lymphoma, lymphocyte-rich classical Hodgkin lymphoma or lymphocyte-depleted classical Hodgkin lymphoma.
In some embodiments, the TAA is associated with a cancer that is any one of acute leukemia, acute lymphoblastic leukemia (ALL), acute lymphocytic leukemia, B cell, T cell or FAB ALL, acute myeloid leukemia (AML), acute myelogenous leukemia, chronic myelocytic leukemia (CIVIL), chronic lymphocytic leukemia (CLL), hairy cell leukemia, myelodysplastic syndrome (MDS), Hodgkin's lymphoma, Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, colorectal carcinoma, pancreatic carcinoma, nasopharyngeal carcinoma, malignant histiocytosis, paraneoplastic syndrome/hypercalcemia of malignancy, bladder cancer, breast cancer, colorectal cancer, endometrial cancer, head cancer, neck cancer, hereditary nonpolyposis cancer, liver cancer, lung cancer, non-small cell lung cancer, ovarian cancer, pancreatic cancer, prostate cancer, renal cell carcinoma, testicular cancer, adenocarcinomas, sarcomas, malignant melanoma, and hemangioma.
In some embodiments, the extracellular domain binds to a TAA selected from kallikrein 4, papillomavirus binding factor (PBF), preferentially expressed antigen of melanoma (PRAME), Wilms' tumor-I (WTI), Hydroxysteroid Dehydrogenase Like I (HSDLI), mesothelin, cancer testis antigen (NY-ESO-1), carcinoembryonic antigen (CEA), p53, human epidermal growth factor receptor 2/neuro receptor tyrosine kinase (Her2/Neu), carcinoma-associated epithelial cell adhesion molecule (EpCAM), ovarian and uterine carcinoma antigen (CAI25), folate receptor a, sperm protein 17, tumor-associated differentially expressed gene-12 (TADG-12), mucin-16 (MUC-16), LI cell adhesion molecule (LICAM), mannan-MUC-1, Human endogenous retrovirus K (HERV-K-MEL), Kita-kyushu lung cancer antigen-I (KK-LC-1), human cancer/testis antigen (KM-HN-1), cancer testis antigen (LAGE-I), melanoma antigen-A1 (MAGE-A1), Sperm surface zona pellucida binding protein (Spl 7), Synovial Sarcoma, X Breakpoint 4 (SSX-4), Transient axonal glycoprotein-1 (TAG-I), Transient axonal glycoprotein-2 (TAG-2), Enabled Homolog (ENAH), mammoglobin-A, NY-BR-I, Breast Cancer Antigen, (BAGE-1), B melanoma antigen, melanoma antigen-A1 (MAGE-A1), melanoma antigen-A2 (MAGE-A2), mucin k, synovial sarcoma, X breakpoint 2 (SSX-2), Taxol-resistance-associated gene-3 (TRAG-3), Avian Myelocytomatosis Viral Oncogene (c-myc), cyclin B 1, mucin I (MUC I), p62, survivin, lymphocyte common antigen (CD45), DickkopfWNT Signaling Pathway Inhibitor I (DKKI), telomerase, Kirsten rat sarcoma viral oncogene homolog (K-ras), G250, intestinal carboxyl esterase, alpha-fetoprotein, Macrophage Colony-Stimulating Factor (M-CSF), Prostate-specific membrane antigen (PSMA), caspase 5 (CASP-5), Cytochrome C Oxidase Assembly Factor I Homolog (COA-1), 0-linked β-N-acetylglucosamine transferase (OGT), Osteosarcoma Amplified 9, Endoplasmic Reticulum Lectin (OS-9), Transforming Growth Factor Beta Receptor 2 (TGF-betaRll), murine leukemia glycoprotein 70 (gp70), Calcitonin Related Polypeptide Alpha (CALCA), Programmed cell death 1 ligand 1 (CD274), Mouse Double Minute 2Homolog (mdm-2), alpha-actinin-4, elongation factor 2, Malic Enzyme 1 (MEI), Nuclear Transcription Factor Y Subunit C (NFYC), G Antigen 1,3 (GAGE-1,3), melanoma antigen-A6 (MAGE-A6), cancer testis antigen XAGE-lb, six transmembrane epithelial antigen of the prostate 1 (STEAP1), PAP, prostate specific antigen (PSA), Fibroblast Growth Factor 5 (FGF5), heat shock protein hsp70-2, melanoma antigen-A9 (MAGE-A9), Arg-specific ADP-ribosyltransferase family C (ARTC1), B-Raf Proto-Oncogene (B-RAF), Serine/Threonine Kinase, beta-catenin, Cell Division Cycle 27 homolog (Cdc27), cyclin dependent kinase 4 (CDK4), cyclin dependent kinase 12 (CDK12), Cyclin Dependent Kinase Inhibitor 2A (CDKN2A), Casein Kinase 1 Alpha 1 (CSNK1A1), Fibronectin 1 (FN1), Gruwih Anest Specific 7 (GAS7), Glycoprotein nonmetastatic melanoma protein B (GPNMB), HAUS Augmin Like Complex Subunit 3 (HAUS3), LDLR-fucosyltransferase, Melanoma Antigen Recognized By T cells 2 (MART2), myostatin (MSTN), Melanoma Associated Antigen (Mutated) 1 (MUM-1-2-3), Poly(A) polymerase gamma (neo-PAP), myosin class I, Protein phosphatase 1 regulatory subunit 3B (PPP1R3B), Peroxiredoxin-5 (PRDX5), Receptor-type tyrosine-protein phosphatase kappa (PTPRK), Transforming protein N-Ras (N-ras), retinoblastoma-associated factor 600 (RBAF600), sirtuin-2 (SIRT2), SNRPD1, triosephosphate isomerase, Ocular Albinism Type 1 Protein (OAl), member RAS oncogene family (RAB38), Tyrosinase related protein 1-2 (TRP-1-2), Melanoma Antigen Gp75 (gp75), tyrosinase, Melan-A (MART-1), Glycoprotein 100 melanoma antigen (gplOO), N-acetylglucosaminyltransferase V gene (GnTVf), Lymphocyte Antigen 6 Complex Locus K (LY6K), melanoma antigen-AlO (MAGE-AlO), melanoma antigen-Al2 (MAGE-Al2), melanoma antigen-C2 (MAGE-C2), melanoma antigen NA88-A, Taxol-resistant-associated protein 3 (TRAG-3), BDZ binding kinase (pbk), caspase 8 (CASP-8), sarcoma antigen 1 (SAGE), Breakpoint Cluster Region-Abelson oncogene (BCR-ABL), fusion protein in leukemia, dek-can, Elongation Factor Tu GTP Binding Domain Containing 2 (EFTUD2), ETS Variant gene 6/acute myeloid leukemia fusion protein (ETV6-AML1), FMS-like tyrosine kinase-3 internal tandem duplications (FLT3-ITD), cyclin-Al, Fibronectin Type III Domain Containing 3B (FDNC3B) promyelocytic leukemia/retinoic acid receptor alpha fusion protein (pml-RARalpha), melanoma antigen-Cl (MAGE-Cl), membrane protein alternative spliced isoform (D393-CD20), melanoma antigen-A4 (MAGE-A4), or melanoma antigen-A3 (MAGE-A3).
In some embodiments, the autoimmune condition or disorder is any one of Type 1 Diabetes, rheumatoid arthritis (RA), systemic lupus erythematosis (SLE), multiple sclerosis (MS), celiac disease, sjÖgren syndrome, polymyalgia rheumatica, ankylosing spondylitis, alopecia areata, vasculitis and temporal arteritis. In some embodiments, the tumor associated antigen (TAA) associated with the autoimmune condition or disorder is derived from any one of Carboxypeptidase H, Chromogranin A, Glutamate decarboxylase, Imogen-38, Insulin, Insulinoma antigen-2 and 2β, Islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP), Proinsulin, α-enolase, Aquaporin-4, β-arrestin, Myelin basic protein, Myelin oligodendrocytic glycoprotein, Proteolipid protein, S100-β, Citrullinated protein, Collagen II, Heat shock proteins, Human cartilage glycoprotein, Double-stranded DNA, La antigen, Nucleosomal histones and ribonucleoproteins (snRNP), Phospholipid-β-2 glycoprotein I complex, Poly(ADP-ribose) polymerase, and Sm antigens of U-1 small ribonucleoprotein complex.
In some embodiments, the pathogen associated antigen is an antigen from a bacterial, a fungal or a parasitic protein or fragment thereof. In some embodiments, the pathogen associated antigen is associated with HIV infection, human Cytomegalovirus infection, Hepatitis B infection, Hepatitis C infection, Ebola virus infection, Dengue, Yellow fever, Listeriosis, Tuberculosis, Cholera, Malaria, Leishmaniasis, or Trypanosoma infection, or a combination thereof.
In some embodiments, the neurodegenerative disorder or condition is any one of Alzheimer's disease (AD) and other dementias, Parkinson's disease (PD) and PD-related disorders, Prion disease, Motor neurone diseases (MND), Huntington's disease (HD), Spinocerebellar ataxia (SCA) or Spinal muscular atrophy (SMA). In some embodiments, the antigen associated with the neurodegenerative disorder or condition is any one of Amyloid (Ab), tau, alpha-synuclein (α-syn), mHTT or prion PrPsc or a combination thereof.
In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 fM to 100 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 pM to 100 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 pM to 10 pM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 10 pM to 50 pM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 10 pM to 100 pM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 100 pM to 500 pM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 500 pM to 1 nM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 nM to 10 nM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 10 nM to 100 nM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 100 nM to 500 nM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 500 nM to 1 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 μM to 10 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 1 μM to 5 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 5 μM to 7.5 μM. In some embodiments, the extracellular domain binds to a target with a binding affinity of 7.5 μM to 10 μM.
In some embodiments, the extracellular domain comprises a signal peptide at the N-terminus. In some embodiments, the signal peptide can be derived from a surface expressing protein or a secretory protein. In some embodiments, the signal peptide can be derived from Preprolactin, HIV pre-Env, HCV polyprotein, CB virus polyprotein, Pestivirus polyprotein, Precalreticulin, pre-VSV-G, HLA class I histocompatibility antigen or PD-1 signal peptide (PD-1 SP), interleukin 12 (IL12), GM-CSF or CD8 alpha chain (CD8a). In some embodiments, the signal peptide is PD-1 signal peptide (PD-1 SP). In some embodiments, the signal peptide is a HLA class I histocompatibility antigen or a portion thereof. In some embodiments, the extracellular domain is derived from PD1. In some embodiments, the extracellular domain comprises the amino acid sequence from position 1 to 163 of the amino acid sequence according to any one of SEQ ID NOs: 19-21. In some embodiments, the extracellular domain comprises the amino acid sequence from position 1 to 163 of the amino acid sequence according to SEQ ID NOs: 19. In some embodiments, the extracellular domain comprises the amino acid sequence from position 1 to 163 of the amino acid sequence according to SEQ ID NOs: 20. In some embodiments, the extracellular domain comprises the amino acid sequence from position 1 to 163 of the amino acid sequence according to SEQ ID NOs: 21.
In some embodiments, the extracellular domain comprises the amino acid sequence according to any one of SEQ ID NOs: 22-23. In some embodiments, the extracellular domain comprises the amino acid sequence according to SEQ ID NOs: 22. In some embodiments, the extracellular domain comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 22. In some embodiments, the extracellular domain comprises the amino acid sequence according to SEQ ID NOs: 23. In some embodiments, the extracellular domain comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NOs: 23.
MQIPQAPWPVFWAVLQLGWRPGWFLDSPDRPWNP
PTFSPALLVVTEGDNATFTCSFSNTSESFVLNWY
RMSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPN
GRDFHMSVVRARRNDSGTYLCGAISLAPKAQIKE
SLRAELRVT
VGVVGGLLGSLVLLVWVLAVI
CSRAARGTIGARRTGQPLKEDPSAVPVFSVDY
GELDFQWREKTPEPPVPCVPEQTEYATIV
FPSGMGTSSPARRGSADGPRSAQPLRPED
GHCSWPL
MQIPQAPWPVFWAVLQLGWRPGW
FLDSPDRPWNP
PTFSPALLVVTEGDNATFTCSFSNTSESFVLNWYR
MSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNGR
DFHMSVVRARRNDSGTYLCGAISLAPKAQIKESLR
AELRVT
VGVVGGLLGSLVLLVWVLAVI
CSR
MAVMAPRTLVLLLSGALALTQTWA
FLDSPDRPWNP
PTFSPALLVVTEGDNATFTCSFSNTSESFVLNWYR
MSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNGR
DFHMSVVRARRNDSGTYLCGAISLAPKAQIKESLR
AELRVT
VVGVVGGLLGSLVLLVWVLAVI
CSR
MQIPQAPWPVFWAVLQLGWRPGWFLDSPDRPWNP
PTFSPALLVVTEGDNATFTCSFSNTSESFVLNWY
RMSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPN
GRDFHMSVVRARRNDSGTYLCGAISLAPKAQIKE
SLRAELRVT
MAVMAPRTLVLLLSGALALTQTWA
FLDSPDRPWNP
PTFSPALLVVTEGDNATFTCSFSNTSESFVLNWYR
MSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNG
RDFHMSVVRARRNDSGTYLCGAISLAPKAQIKES
LRAELRVT
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to any one of SEQ ID NOs: 24-44 and 130-132.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 24. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 24.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 25. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 25.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 26. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 26.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 27. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 27.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 28. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 28.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 29. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 29.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 30. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 30.
In some embodiments, the extracellular domain of the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 31. In some embodiments, the extracellular domain of the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 31.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 32. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 32.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 33. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 33.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 34. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 34.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 35. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 35.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 36. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 36.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 37. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 37.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 38. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 38.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 39. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 39.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 40. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 40.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 41. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 41.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 42. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 42.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 43. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 43.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 44. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 44.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 130. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 130.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 131. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 131.
In some embodiments, the RTCR disclosed herein comprises the amino acid sequence according to SEQ ID NO: 132. In some embodiments, the RTCR disclosed herein comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 132.
MAVMAPRTLVLLLSGALALTQTWAFLDSPDRPWNPPTFSPALLVVTEGDNATFTCSFS
NTSESFVLNWYRMSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNGRDFHMSVV
MAVMAPRTLVLLLSGALALTQTWAFLDSPDRPWNPPTFSPALLVVTEGDNATFTCSFS
NTSESFVLNWYRMSPSNQTDKLAAFPEDRSQPGQDCRFRVTQLPNGRDFHMSVV
WLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTAKKSRLTDVT
L
KRGRKKLLYIFKQPFMRPVQTTQEEDGCSCRFPEEEEGGCEL
WLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTAKKSRLTDVT
L
QPFMRPVQTTQEEDGCSCRFPEEEEGGCEL
WLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMRAVNTAKKSRLTDVT
L
GGGSFRTPIQEEQADAHSTLA
WLPIGCAAFVVVCILGCILICWLTKKKYSSSVHDPNGEYMFMTPRRPGPTRKHYQPY
In some embodiments, the extracellular domain is derived from CD19 binding protein. In some embodiments, the CD19 binding protein is a CD19 binding chimeric antigen receptor (CAR). In some embodiments, the extracellular domain comprises the amino acid sequence according to SEQ ID NO: 51. In some embodiments, the extracellular domain comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 51.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to any one of SEQ ID NOs: 52-69. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 52. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 52.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 53. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 53.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 54. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 54.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 55. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 55.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 56. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 56.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 57. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 57.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 58. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 58.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 59. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 59.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 60. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 60.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 61. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 61.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to any one of SEQ ID NO: 62. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 62.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 63. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 63.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 64. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 64.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 65. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 65.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 66. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 66.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 67. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 67.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 68. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 68.
In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 69. In some embodiments, the CD19 binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 69.
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
SQPLSLRPEACRPAAGGAVHTRGLDFAC
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACDIYIWAPL
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACLFPGPSKP
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACLFPGPSKP
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACLFPGPSKP
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACLFPGPSKP
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
MALPVTALLLPLALLLHAARPDIQMTQTTSSLSAS
LGDRVTISCRASQDISKYLNWYQQKPDGTVKLLIY
HTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIA
TYFCQQGNTLPYTFGGGTKLEITGGGGSGGGGSGG
GGSEVKLQESGPGLVAPSQSLSVTCTVSGVSLPDY
GVSWIRQPPRKGLEWLGVIWGSETTYYNSALKSRL
TIIKDNSKSQVFLKMNSLQTDDTAIYYCAKHYYYG
GSYAMDYWGQGTSVTVSSTTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACSQLCCQLK
In some embodiments, the extracellular domain comprises a hinge region. In some embodiments, the hinge region is derived from CD8, PD-1, CD28, ICOS, or IgG. In some embodiments, the transmembrane domain of the RTCR disclosed herein, is derived from CD8, PD1, CD28, ICOS, or IgG.
The present disclosure also provides a nucleic acid encoding the RTCR disclosed herein. In some embodiments, the nucleic acid encoding the RTCR disclosed herein is according to SEQ ID NO: 75-86 and 92-110. In some embodiments, the nucleic acid disclosed herein comprises a nucleic acid sequence encoding a chimeric intracellular domain. In some embodiments, the RTCR disclosed herein is for expression in a T cell, wherein the T cell co-expresses at least one of the endogenous co-stimulatory molecules CD28, CD2, OX-40, ICOS, CD28, CD3, CD4, CD8 and CD40L or a combination thereof.
The present disclosure also provides a vector comprising the nucleic acid disclosed herein. In some embodiments, the vector disclosed herein is any one of a viral vector, a plasmid, a cosmid, a yeast artificial chromosome, a bacterial artificial chromosome or a transposon/transposase system. In some embodiments, the viral vector is an adeno-viral vector or a lentiviral vector. In some embodiments, the vector is a lentiviral vector.
The present disclosure also provides a cell comprising the nucleic acid or the vector disclosed herein. In some embodiments, the cell disclosed herein is a modified T cell. In some embodiments, the modified T cell is an allogenic T cell. In some embodiments, the modified T cell is an autologous T cell. In some embodiments, the modified T cell is any one of a naïve T cell, an early memory T cell, a stem cell-like T cell, a stem memory T cell (TSCM), a central memory T cell (TCM) and a regulatory T cell (Treg).
In some embodiments, the extracellular domain is a B cell maturation Ag (BCMA) binding protein. In some embodiments, the BCMA binding protein is a BCMA specific T cell receptor (TCR). In some embodiments, the BCMA binding protein is a BCMA specific chimeric antigen receptor (CAR). In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to any one of: SEQ ID NOs: 137-146.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 137. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 137.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 138. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 138.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 139. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 139.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 140. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 140.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 141. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 141.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 142. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 142.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 143. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 143.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 144. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 144.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 145. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 145.
In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to SEQ ID NO: 146. In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 146.
In some embodiments, the extracellular domain is a B cell maturation Ag (BCMA) binding protein. In some embodiments, the BCMA binding protein is a BCMA specific T cell receptor (TCR). In some embodiments, the BCMA binding protein is a BCMA specific chimeric antigen receptor (CAR). In some embodiments, the BCMA binding chimeric antigen receptor comprises the amino acid sequence according to any one of: SEQ ID NOs: 141, 142, 145 and 146.
MALPVTALLLPLALLLHAARP
DIVLTQSPPSLAMSLGKRATISCRASESVTILGSH
LIHWYQQKPGQPPTLLIQLASNVQTGVPARFSGSGSRTDFTLTIDPVEEDDVAVYYC
LQSRTIPRTFGGGTKLEIKGSTSGSGKPGSGEGSTKGQIQLVQSGPELKKPGETVKI
SCKASGYTFTDYSINWVKRAPGKGLKWMGWINTETREPAYAYDFRGRFAFSLETSAS
TAYLQINNLKYEDTATYFCALDYSYAMDYWGQGTSVTVSS
TTTPAPRPPTPAPTIAS
QPLSLRPEACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLSLVITLYCKRGRK
MALPVTALLLPLALLLHAARP
EVQLLESGGGLVQPGGSLRLSCAASGFTFSSYAMSWVR
QAPGKGLEWVSSISGSGDYIYYADSVKGRFTISRDISKNTLYLQMNSLRAEDTAVYYCA
KEGTGANSSLADYRGQGTLVTVSSFVPVFLPAKP
TTTPAPRPPTPAPTIASQPLSLRPE
ACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLSLVITLYCNHRNKRGRKKLLYIF
MALPVTALLLPLALLLHAARP
QVKLEESGGGLVQAGRSLRLSCAASEHTFSSHVMGWF
RQAPGKERESVAVIGWRDISTSYADSVKGRFTISRDNAKKTLYLQMNSLKPEDTAVYY
CAARRIDAADFDSWGQGTQVTVSSGGGGSGGGGSGGGGSGGGGSGGGGSAVQLVESGG
GLVQAGDSLRLTCTASGRAFSTYFMAWFRQAPGKEREFVAGIAWSGGSTAYADSVKGR
FTISRDNAKNTVYLQMNSLKSEDTAVYYCASRGIEVEEFGAWGQGTQVTVSS
TSTTTP
APRPPTPAPTIASQPLSLRPEACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLS
MALPVTALLLPLALLLHAARP
QVKLEESGGGLVQAGRSLRLSCAASEHTFSSHVMGWF
RQAPGKERESVAVIGWRDISTSYADSVKGRFTISRDNAKKTLYLQMNSLKPEDTAVYY
CAARRIDAADFDSWGQGTQVTVSSGGGGSGGGGSGGGGSEVQLVESGGGLVQAGGSLR
LSCAASGRTFTMGWFRQAPGKEREFVAAISLSPTLAYYAESVKGRFTISRDNAKNTVV
LQMNSLKPEDTALYYCAADRKSVMSIRPDYWGQGTQVTVSSTSTTTPAPRPPTPAPTI
ASQPLSLRPEACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLSLVITLYCKRGR
MALPVTALLLPLALLLHAARP
EVQLQASGGGLAQPGGSLRLSCAASGRTFSTYFMAWF
RQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLRAEDTAVYF
CASRGIADGSDFGSYGQGTQVTVSS
TTTPAPRPPTPAPTIASQPLSLRPEACRPAAGG
AVHTRGLDFAC
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLSLVITLYCKRGRKK
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACLFPGPSKPFWVLVVVGGVLACYSLLVTVAFI
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACLFPGPSKPFWVLVVVGGVLACYSLLVTVAFI
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACLFPGPSKPFWVLVVVGGVLACYSLLVTVAFI
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACLFPGPSKPFWVLVVVGGVLACYSLLVTVAFI
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACSQLCCQLKFWLPIGCAAFVVVCILGCILICW
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACSQLCCQLKFWLPIGCAAFVVVCILGCILICW
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACSQLCCQLKFWLPIGCAAFVVVCILGCILICW
MALPVTALLLPLALLLHAARPEVQLQASGGGLAQPGGSLRLSCAASGRTFSTYF
MAWFRQPPGKGLEYVGGIRWSDGVPHYADSVKGRFTISRDNAKNTVYLQMNSLR
AEDTAVYFCASRGIADGSDFGSYGQGTQVTVSSTTTPAPRPPTPAPTIASQPLS
LRPEACRPAAGGAVHTRGLDFACSQLCCQLKFWLPIGCAAFVVVCILGCILICW
In some embodiments, the cell disclosed herein further comprises a sequence encoding an artificial antigen receptor, a therapeutic polypeptide, an immune cell modulatory protein, or a combination thereof. In some embodiments, the artificial antigen receptor comprises a chimeric antigen receptor (CAR). In some embodiments, the artificial antigen receptor comprises a recombinant T cell receptor (rTCR). In some embodiments, the artificial antigen receptor comprises an enhanced affinity TCR. In some embodiments, the artificial antigen receptor binds to a tumor associated antigen (TAA), a pathogen associated protein, or an antigen associated with the disease or disorder is a cancer, an autoimmune disease or disorder, an infectious disease, an inflammatory disease, a renal disease or disorder, a lung disease or disorder, a liver disease or disorder a neurodegenerative disorder or disorder, or a metabolic disorder or disorder.
In some embodiments, the artificial antigen receptor binds to a TAA associated with a solid tumor or a hematologic cancer. In some embodiments, artificial antigen receptor binds to a TAA associated with a cancer selected from any one of leukemia, acute leukemia, acute lymphoblastic leukemia (ALL), acute lymphocytic leukemia, B cell, T cell or FAB ALL, acute myeloid leukemia (AML), acute myelogenous leukemia, chronic myelocytic leukemia (CIVIL), chronic lymphocytic leukemia (CLL), hairy cell leukemia, myelodysplastic syndrome (MDS), a lymphoma, Hodgkin's disease, a malignant lymphoma, non-Hodgkin's lymphoma, Burkitt's lymphoma, multiple myeloma, Kaposi's sarcoma, colorectal carcinoma, pancreatic carcinoma, nasopharyngeal carcinoma, malignant histiocytosis, paraneoplastic syndrome/hypercalcemia of malignancy, solid tumors, bladder cancer, breast cancer, colorectal cancer, endometrial cancer, head cancer, neck cancer, hereditary nonpolyposis cancer, Hodgkin's lymphoma, liver cancer, lung cancer, non-small cell lung cancer, ovarian cancer, pancreatic cancer, prostate cancer, renal cell carcinoma, testicular cancer, adenocarcinomas, sarcomas, malignant melanoma, and hemangioma.
In some embodiments, the artificial antigen receptor binds to a TAA selected from kallikrein 4, papillomavirus binding factor (PBF), preferentially expressed antigen of melanoma (PRAME), Wilms' tumor-I (WTI), Hydroxysteroid Dehydrogenase Like I (HSDLI), mesothelin, cancer testis antigen (NY-ESO-1), carcinoembryonic antigen (CEA), p53, human epidermal growth factor receptor 2/neuro receptor tyrosine kinase (Her2/Neu), carcinoma-associated epithelial cell adhesion molecule (EpCAM), ovarian and uterine carcinoma antigen (CAI25), folate receptor a, sperm protein 17, tumor-associated differentially expressed gene-12 (TADG-12), mucin-16 (MUC-16), LI cell adhesion molecule (LICAM), mannan-MUC-1, Human endogenous retrovirus K (HERV-K-MEL), Kita-kyushu lung cancer antigen-I (KK-LC-1), human cancer/testis antigen (KM-HN-1), cancer testis antigen (LAGE-I), melanoma antigen-Al (MAGE-A1), Sperm surface zona pellucida binding protein (Spl 7), Synovial Sarcoma, X Breakpoint 4 (SSX-4), Transient axonal glycoprotein-1 (TAG-I), Transient axonal glycoprotein-2 (TAG-2), Enabled Homolog (ENAH), mammoglobin-A, NY-BR-I, Breast Cancer Antigen, (BAGE-1), B melanoma antigen, melanoma antigen-Al (MAGE-Al), melanoma antigen-A2 (MAGE-A2), mucin k, synovial sarcoma, X breakpoint 2 (SSX-2), Taxol-resistance-associated gene-3 (TRAG-3), Avian Myelocytomatosis Viral Oncogene (c-myc), cyclin B 1, mucin I (MUC I), p62, survivin, lymphocyte common antigen (CD45), DickkopfWNT Signaling Pathway Inhibitor I (DKKI), telomerase, Kirsten rat sarcoma viral oncogene homolog (K-ras), G250, intestinal carboxyl esterase, alpha-fetoprotein, Macrophage Colony-Stimulating Factor (M-CSF), Prostate-specific membrane antigen (PSMA), caspase 5 (CASP-5), Cytochrome C Oxidase Assembly Factor I Homolog (COA-1), 0-linked β-N-acetylglucosamine transferase (OGT), Osteosarcoma Amplified 9, Endoplasmic Reticulum Lectin (OS-9), Transforming Growth Factor Beta Receptor 2 (TGF-betaRII), murine leukemia glycoprotein 70 (gp70), Calcitonin Related Polypeptide Alpha (CALCA), Programmed cell death 1 ligand 1 (CD274), Mouse Double Minute 2Homolog (mdm-2), alpha-actinin-4, elongation factor 2, Malic Enzyme 1 (MEI), Nuclear Transcription Factor Y Subunit C (NFYC), G Antigen 1,3 (GAGE-1,3), melanoma antigen-A6 (MAGE-A6), cancer testis antigen XAGE-lb, six transmembrane epithelial antigen of the prostate 1 (STEAPl), PAP, prostate specific antigen (PSA), Fibroblast Growth Factor 5 (FGF5), heat shock protein hsp70-2, melanoma antigen-A9 (MAGE-A9), Arg-specific ADP-ribosyltransferase family C (ARTCl), B-Raf Proto-Oncogene (B-RAF), Serine/Threonine Kinase, beta-catenin, Cell Division Cycle 27 homolog (Cdc27), cyclin dependent kinase 4 (CDK4), cyclin dependent kinase 12 (CDK12), Cyclin Dependent Kinase Inhibitor 2A (CDKN2A), Casein Kinase 1 Alpha 1 (CSNK1A1), Fibronectin 1 (FNl), Gruwih Anest Specific 7 (GAS7), Glycoprotein nonmetastatic melanoma protein B (GPNMB), HAUS Augmin Like Complex Subunit 3 (HAUS3), LDLR-fucosyltransferase, Melanoma Antigen Recognized By T cells 2 (MART2), myostatin (MSTN), Melanoma Associated Antigen (Mutated) 1 (MUM-1-2-3), Poly(A) polymerase gamma (neo-PAP), myosin class I, Protein phosphatase 1 regulatory subunit 3B (PPP1R3B), Peroxiredoxin-5 (PRDX5), Receptor-type tyrosine-protein phosphatase kappa (PTPRK), Transforming protein N-Ras (N-ras), retinoblastoma-associated factor 600 (RBAF600), sirtuin-2 (SIRT2), SNRPD1, triosephosphate isomerase, Ocular Albinism Type 1 Protein (OAl), member RAS oncogene family (RAB38), Tyrosinase related protein 1-2 (TRP-1-2), Melanoma Antigen Gp75 (gp75), tyrosinase, Melan-A (MART-1), Glycoprotein 100 melanoma antigen (gp100), N-acetylglucosaminyltransferase V gene (GnTVf), Lymphocyte Antigen 6 Complex Locus K (LY6K), melanoma antigen-AlO (MAGE-AlO), melanoma antigen-Al2 (MAGE-Al2), melanoma antigen-C2 (MAGE-C2), melanoma antigen NA88-A, Taxol-resistant-associated protein 3 (TRAG-3), BDZ binding kinase (pbk), caspase 8 (CASP-8), sarcoma antigen 1 (SAGE), Breakpoint Cluster Region-Abelson oncogene (BCR-ABL), fusion protein in leukemia, dek-can, Elongation Factor Tu GTP Binding Domain Containing 2 (EFTUD2), ETS Variant gene 6/acute myeloid leukemia fusion protein (ETV6-AML1), FMS-like tyrosine kinase-3 internal tandem duplications (FLT3-ITD), cyclin-Al, Fibronectin Type III Domain Containing 3B (FDNC3B) promyelocytic leukemia/retinoic acid receptor alpha fusion protein (pml-RARalpha), melanoma antigen-Cl (MAGE-Cl), membrane protein alternative spliced isoform (D393-CD20), melanoma antigen-A4 (MAGE-A4), and melanoma antigen-A3 (MAGE-A3).
In some embodiments, the artificial antigen receptor binds to an antigen associated with an autoimmune condition or disorder selected from any one of Type 1 Diabetes, rheumatoid arthritis (RA), systemic lupus erythematosis (SLE), or multiple sclerosis (MS). In some embodiments, the artificial antigen receptor binds to an antigen associated with an autoimmune condition or disorder selected from any one of Carboxypeptidase H, Chromogranin A, Glutamate decarboxylase, Imogen-38, Insulin, Insulinoma antigen-2 and 2β, Islet-specific glucose-6-phosphatase catalytic subunit related protein (IGRP), Proinsulin, α-enolase, Aquaporin-4, β-arrestin, Myelin basic protein, Myelin oligodendrocytic glycoprotein, Proteolipid protein, S100-β, Citrullinated protein, Collagen II, Heat shock proteins, Human cartilage glycoprotein, Double-stranded DNA, La antigen, Nucleosomal histones and ribonucleoproteins (snRNP), Phospholipid-β-2 glycoprotein I complex, Poly(ADP-ribose) polymerase, Sm antigens of U-1 small ribonucleoprotein complex.
In some embodiments, the artificial antigen receptor binds to a pathogen associated antigen from a bacterial, a fungal or a parasitic protein or fragment thereof. In some embodiments, the artificial antigen receptor binds to an antigen associated with HIV infection, human Cytomegalovirus infection, Hepatitis B infection, Hepatitis C infection, Ebola virus infection, Dengue, Yellow fever, Listeriosis, Tuberculosis, Cholera, Malaria, Leishmaniasis, or Trypanosoma infection, or a combination thereof.
In some embodiments, the artificial antigen receptor binds to an antigen associated with a neurodegenerative disorder or condition selected from Alzheimer's disease (AD) and other dementias, Parkinson's disease (PD) and PD-related disorders, Prion disease, Motor neurone diseases (MND), Huntington's disease (HD), Spinocerebellar ataxia (SCA) or Spinal muscular atrophy (SMA). In some embodiments, the antigen associated with the neurodegenerative disorder or condition is any one of Amyloid β (Aβ), tau, alpha-synuclein (α-syn), mHTT or prion PrPsc or a combination thereof.
In some embodiments, the therapeutic polypeptide is a cytokine, a cytokine receptor, a chemokine, a chemokine receptor, an immunogenic polypeptide, or a cell surface protein that binds to a target on the surface of another cell. In some embodiments, the immune cell modulatory protein is a cytokine, a chemokine, a transcription factor, a protein kinase, a protease, a component or an adaptor protein of a cell signaling pathway.
In some embodiments, the cell disclosed herein expresses the RTCR disclosed herein. In some embodiments, the cell disclosed herein expresses the RTCR disclosed herein stably or transiently. In some embodiments, the cell disclosed herein expresses the RTCR disclosed herein stably. In some embodiments, the cell disclosed herein expresses the RTCR disclosed herein transiently.
In some embodiments, the cell disclosed herein co-expresses at least one of the endogenous co-stimulatory molecules CD28, CD2, OX-40, ICOS, CD28, CD3, CD4, CD8 and CD40L or a combination thereof.
The present disclosure also provides a modified T lymphocyte (T cell), comprising: (a) a modification of an endogenous sequence encoding a T cell Receptor (TCR), wherein the modification reduces or eliminates a level of expression or activity of the TCR or; and (b) a recombinant T cell co-stimulatory receptor (RTCR) disclosed herein. In some embodiments, the modification of an endogenous sequence encoding a T cell Receptor (TCR) is done using a nucleic acid modifying system. In some embodiments, the nucleic acid modifying system is one or more of a CRISPR/Cas protein, a Transcription Activator-Like Effector Nuclease (TALEN), a Zinc Finger Nuclease (ZFN), and an endonuclease. In some embodiments, the modification of an endogenous sequence encoding a T cell Receptor (TCR) is done by nonhomologous end joining repair. In some embodiments, the nonhomologous end joining repair is generated by zinc finger nuclease, introduced into the cell by physical means, viral vector, or non-viral vector. In some embodiments, the nonhomologous end joining repair is generated by TALE nuclease, introduced into the cell by physical means, viral vector, or non-viral vector. In some embodiments, the modification of an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of the alpha chain of the TCR. In some embodiments, the modification of an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of beta chain of the TCR. In some embodiments, the modification of an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of both the alpha chain and the beta chain TCR alpha chain.
In some embodiments, the modified T cell disclosed herein co-expresses at least one of the endogenous co-stimulatory molecules CD28, CD2, OX-40, ICOS, CD28, CD3, CD4, CD8 and CD40L or a combination thereof.
In some embodiments, the method disclosed herein further comprises a modification of an endogenous sequence encoding a component of major histocompatibility complex (MHC) class I (MHC-I), wherein the modification reduces or eliminates a level of expression or activity of the MHC-I. In some embodiments, the modification reduces or eliminates the expression or activity of β2-macroglobulin.
The present disclosure also provides a composition comprising the RTCR disclosed herein. The present disclosure also provides a composition comprising the nucleic acid encoding the RTCR disclosed herein. The present disclosure also provides a composition comprising the vector comprising the nucleic acid disclosed herein. The present disclosure also provides a composition comprising the cell disclosed herein. The present disclosure also provides a composition comprising the modified T cell disclosed herein.
The present disclosure also provides a composition comprising a population of cells, wherein the population comprises a plurality of the cell comprising the nucleic acid encoding or a vector comprising the nucleic acid encoding the RTCR disclosed herein. The present disclosure also provides a composition comprising a population of cells, wherein the population comprises a plurality of the modified T cell disclosed herein.
The present disclosure also provides a method of producing a plurality of modified T cells, wherein the method comprises: a) providing a plurality of primary T cells disclosed herein; b) providing a composition comprising the RTCR disclosed herein, the nucleic acid encoding the RTCR disclosed herein, or the vector comprising the nucleic acid encoding the RTCR disclosed herein; and c) introducing into the plurality of primary T cells of (a) the composition of (b), to produce a plurality of modified T cells under conditions that stably express the RTCR within the plurality of modified T cells. In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises a step of modifying an endogenous sequence encoding an endogenous T cell Receptor (TCR), wherein the modification reduces or eliminates a level of expression or activity of the endogenous TCR. In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises a step of modifying an endogenous sequence, wherein the modification reduces or eliminates a level of expression or activity of a major histocompatibility complex (MHC) class I (MHC-I).
In some embodiments, the modifying an endogenous sequence encoding a T cell Receptor (TCR) is done using a nucleic acid modifying system. In some embodiments, the modifying an endogenous sequence that reduces or eliminates a level of expression or activity of is done using a nucleic acid modifying system. In some embodiments, the nucleic acid modifying system is a one or more of a CRISPR/Cas protein, a Transcription Activator-Like Effector Nuclease (TALEN), a Zinc Finger Nuclease (ZFN), and an endonuclease. In some embodiments, the modifying an endogenous sequence is done by nonhomologous end joining repair. In some embodiments, the nonhomologous end joining repair is generated by zinc finger nuclease, introduced into the cell by physical means, viral vector, or non-viral vector. In some embodiments, the nonhomologous end joining repair is generated by TALE nuclease, introduced into the cell by physical means, viral vector, or non-viral vector. In some embodiments, the modifying an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of the alpha chain of the TCR. In some embodiments, the modifying an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of beta chain of the TCR. In some embodiments, the modifying an endogenous sequence encoding a T cell Receptor (TCR) reduces or eliminates a level of expression of both the alpha chain and the beta chain TCR alpha chain.
In some embodiments, the modifying an endogenous sequence that reduces or eliminates a level of expression or activity of a major histocompatibility complex (MHC) class I (MHC-I), wherein the modifying of an endogenous sequence reduces or eliminates a level of expression or activity of the MHC-I. In some embodiments, the modifying of an endogenous sequence reduces or eliminates the expression or activity of β2-macroglobulin.
In some embodiments, the method of producing a plurality of modified T cells disclosed herein, further comprises: d) maintaining or expanding the plurality of modified T cells in a suitable cell culture media; and e) either: i) cyropreserving the plurality of modified T cells in a suitable cell freezing media; or ii) preparing the plurality of modified T cells for administering to a subject suffering from a disease or disorder.
The compositions comprising the cells or modified T cells of the disclosure, and the plurality of modified T cells produced by the methods of the disclosure, intended for administration to a subject may be required to meet one or more “release criteria” that indicate that the composition is safe and efficacious for formulation as a pharmaceutical product and/or administration to a subject. Release criteria may include a requirement that a composition of the disclosure (e.g., a cell or modified T cell of the disclosure) comprises a particular percentage of cells or modified T cells expressing the RTCR of the disclosure on their cell surface. The expansion process should be continued until a specific criterion has been met (e.g., achieving a certain total number of cells or modified T cells of the disclosure or a certain percentage of total number of cells or modified T cells expressing the RTCR of the disclosure).
Certain criterion signal a point at which the expansion process should end. For example, cells should be formulated, reactivated, or cryopreserved once they reach a cell size of 300fL (otherwise, cells reaching a size above this threshold may start to die). Cryopreservation immediately once a population of cells reaches an average cell size of less than 300 fL may yield better cell recovery upon thawing and culture because the cells haven't yet reached a fully quiescent state prior to cryopreservation (a fully quiescent size is approximately 180 fL). Prior to expansion, T cells of the disclosure may have a cell size of about 180 fL, but may more than quadruple their cell size to approximately 900 fL at 3 days post-expansion. Over the next 6-12 days, the population of T cells will slowly decrease cell size to full quiescence at 180 fL.
A process for preparing a cell population for formulation may include, but is not limited to the steps of, concentrating the cells of the cell population, washing the cells, and/or further selection of the cells via drug resistance or magnetic bead sorting against a particular surface-expressed marker. A process for preparing a cell population for formulation may further include a sorting step to ensure the safety and purity of the final product. For example, if a tumor cell from a patient has been used to stimulate a modified T cell of the disclosure or that have been modified in order to stimulate a modified T cell of the disclosure that is being prepared for formulation, it is critical that no tumor cells from the patient are included in the final product.
In some embodiments, the cell disclosed herein, or the modified T cell disclosed herein, expresses on the cell surface the RTCR comprising a mutant CD137 or a mutant CD134 intracellular signaling domain disclosed herein, at a level that is at least about 2×, 3×, 4×, 5×, 6×, 7×, 8×, 9×, 10× or 20×, more as compared to the level of expression of a co-stimulatory molecule comprising a wild type CD137 or a wild type CD134 intracellular domain, respectively.
In some embodiments, the compositions disclosed herein, and the population of modified T cells produced using the methods disclosed herein, is in the form of a pharmaceutical formulation (or composition). In some embodiments, the pharmaceutical formulation disclosed herein comprises a pharmaceutically acceptable carrier. A pharmaceutical formulation of the disclosure may be distributed into bags for infusion, cryopreservation, and/or storage.
A pharmaceutical formulation of the disclosure may be cryopreserved using a standard protocol and, optionally, an infusible cryopreservation medium. For example, a DMSO free cryopreservant (e.g. CryoSOfree™ DMSO-free Cryopreservation Medium) may be used to reduce freezing-related toxicity. A cryopreserved pharmaceutical formulation of the disclosure may be stored for infusion to a patient at a later date. An effective treatment may require multiple administrations of a pharmaceutical formulation of the disclosure and, therefore, pharmaceutical formulations may be packaged in pre-aliquoted “doses” that may be stored frozen but separated for thawing of individual doses.
A pharmaceutical formulation of the disclosure may be stored at room temperature. An effective treatment may require multiple administrations of a pharmaceutical formulation of the disclosure and, therefore, pharmaceutical formulations may be packaged in pre-aliquoted “doses” that may be stored together but separated for administration of individual doses.
A pharmaceutical formulation of the disclosure may be archived for subsequent re-expansion and/or selection for generation of additional doses to the same patient in the case of an allogenic therapy who may need an administration at a future date following, for example, a remission and relapse of a condition.
As noted above, the disclosure provides for stable formulations, which preferably comprise a phosphate buffer with saline or a chosen salt, as well as preserved solutions and formulations containing a preservative as well as multi-use preserved formulations suitable for pharmaceutical or veterinary use, comprising at least one modified cell in a pharmaceutically acceptable formulation. Preserved formulations contain at least one known preservative or optionally selected from the group consisting of at least one phenol, m-cresol, p-cresol, o-cresol, chlorocresol, benzyl alcohol, phenylmercuric nitrite, phenoxyethanol, formaldehyde, chlorobutanol, magnesium chloride (e.g., hexahydrate), alkylparaben (methyl, ethyl, propyl, butyl and the like), benzalkonium chloride, benzethonium chloride, sodium dehydroacetate and thimerosal, polymers, or mixtures thereof in an aqueous diluent. Any suitable concentration or mixture can be used as known in the art, such as about 0.0015%, or any range, value, or fraction therein. Non-limiting examples include, no preservative, about 0.1-2% m-cresol (e.g., 0.2, 0.3. 0.4, 0.5, 0.9, 1.0%), about 0.1-3% benzyl alcohol (e.g., 0.5, 0.9, 1.1, 1.5, 1.9, 2.0, 2.5%), about 0.001-0.5% thimerosal (e.g., 0.005, 0.01), about 0.001-2.0% phenol (e.g., 0.05, 0.25, 0.28, 0.5, 0.9, 1.0%), 0.0005-1.0% alkylparaben(s) (e.g., 0.00075, 0.0009, 0.001, 0.002, 0.005, 0.0075, 0.009, 0.01, 0.02, 0.05, 0.075, 0.09, 0.1, 0.2, 0.3, 0.5, 0.75, 0.9, 1.0%), and the like.
As noted above, the disclosure provides an article of manufacture, comprising packaging material and at least one vial comprising a solution of at least one modified cell with the prescribed buffers and/or preservatives, optionally in an aqueous diluent, wherein said packaging material comprises a label that indicates that such solution can be held over a period of 1, 2, 3, 4, 5, 6, 9, 12, 18, 20, 24, 30, 36, 40, 48, 54, 60, 66, 72 hours or greater.
The articles of manufacture of the present disclosure are useful for administration over a period ranging from immediate to twenty-four hours or greater. Accordingly, the presently claimed articles of manufacture offer significant advantages to the patient. Formulations of the disclosure can optionally be safely stored at temperatures of from about 2° C. to about 40° C. and retain the biological activity of the protein for extended periods of time, thus allowing a package label indicating that the solution can be held and/or used over a period of 6, 12, 18, 24, 36, 48, 72, or 96 hours or greater.
The products of the present disclosure include packaging material. The packaging material provides, in addition to the information required by the regulatory agencies, the conditions under which the product can be used.
The present disclosure also provided a method of treating a disease or disorder, comprising administering to a subject in need thereof a therapeutically effective number of the cell comprising the nucleic acid encoding or the vector comprising the nucleic acid encoding the RTCR disclosed herein, a therapeutically effective number of any one of the modified T cell disclosed herein, a therapeutically effective amount of any one of the compositions disclosed herein, or a therapeutically effective number of the plurality of modified T cells produced by the method disclosed herein.
In some embodiments, the subject is a mammal. In some embodiments, the mammal is any one of a human, a primate, a rodent, a canine, a feline, an ungulate, an equine and a porcine. In some embodiments, the mammal is a human. In some embodiments, the disease or disorder is any one of a cancer, an autoimmune disorder, an infectious disease, an inflammatory disease or condition, a renal disease or disorder, a lung disease or disorder, a liver disease or disorder, a cardiovascular system disease or disorder, a neurodegenerative disorder or condition, or a metabolic disorder or condition. In some embodiments, the cancer is a solid tumor or a hematologic cancer. In some embodiments, the infectious disease is caused by a bacteria, a virus, a fungi, a protozoa, or a parasite. In some embodiments, the neurodegenerative disorder or condition is any one of Alzheimer's disease (AD) and other dementias, Parkinson's disease (PD) and PD-related disorders, Prion disease, Motor neurone diseases (MND), Huntington's disease (HD), Spinocerebellar ataxia (SCA) or Spinal muscular atrophy (SMA).
The present disclosure provides a chimeric co-stimulatory intracellular protein (CIP) comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant intracellular signaling domain of a tumor necrosis factor receptor (TNFR) family protein.
The present disclosure also provides a chimeric co-stimulatory intracellular protein (CIP) comprising a first and at least a second signal transduction domains, wherein the first and the at least second signal transduction domains are non-identical; and wherein the at least second signal transduction domain comprises a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain.
In some embodiments of the CIP disclosed herein, the mutant intracellular signaling domain of a TNFR family protein is any one of a mutant CD137 (4-1BB) intracellular domain or a mutant CD134 (OX-40) intracellular domain. In some embodiments, the CIP further comprises a transmembrane domain. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain is a truncated CD137 intracellular domain.
In some embodiments of the CIP disclosed herein, the truncated CD137 intracellular domain comprises an amino acid sequence according to amino acid position 13 to amino acid position 42 of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the truncated CD137 intracellular domain comprises a deletion of a continuous stretch of one, two, three, four, five, six, seven, eight, nine, ten or more amino acids from the N-terminus the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the truncated CD137 intracellular domain comprises a deletion of one, two, three, four, five, six, seven, eight, nine, ten or more amino acids from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the CD137 intracellular domain of the present disclosure comprises an amino acid sequence according to SEQ ID NO: 1.
In some embodiments of the CIP disclosed herein, the truncated CD137 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 3.
In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises a deletion of one, two, three or four lysine residue(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises one or more lysine mutation(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises one or more lysine mutation(s) at amino acid positions selected from amino acid positions 1, 5, 6 and 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure.
In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises a deletion of one or more proximal basic amino acids from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises one or more proximal basic amino acid mutation(s) from amino acid position 1 to amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain comprises one or more proximal basic amino acid mutation(s) at amino acid positions selected from amino acid positions 1, 2, 3, 4, 5 and 6 of the N-terminus of the CD137 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD137 intracellular domain further comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD137 intracellular domain, of the present disclosure.
In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain is a truncated CD134 intracellular domain. In some embodiments of the CIP disclosed herein, the truncated CD134 intracellular domain comprises an amino acid sequence according to amino acid position 15 to amino acid position 37 of the CD134 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the truncated CD134 intracellular domain comprise a deletion of a continuous stretch of one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen or more amino acids from the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the truncated CD134 intracellular domain comprises a deletion of one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen or more amino acids from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure.
In some embodiments of the CIP disclosed herein, the truncated CD134 intracellular domain comprises an amino acid sequence according to SEQ ID NO: 6.
In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain comprises a deletion of a lysine residue from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD134 intracellular domain, of the present disclosure.
In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain comprises a deletion of one or more proximal basic amino acids from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain, of the present disclosure. In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain comprises one or more proximal basic amino acid mutation(s) from amino acid position 1 to amino acid position 14 of the N-terminus of the CD134 intracellular domain. In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain comprises one or more proximal basic amino acid mutation(s) at amino acid positions selected from amino acid positions 1, 2, and 5 of the N-terminus of the CD134 intracellular domain. In some embodiments of the CIP disclosed herein, the mutant CD134 intracellular domain further comprises a lysine mutation at amino acid position 12 of the N-terminus of the CD134 intracellular domain
In some embodiments, the CIP disclosed herein comprises a first signal transduction domain derived from a protein of the CD28 family. In some embodiments, the CIP disclosed herein comprises a first signal transduction domain derived from any one of CD28, CD28H, ICOS or a combination thereof.
In some embodiments, the CIP disclosed herein comprises a first signal transduction domain derived from ICOS. In some embodiments, the first signal transduction domain derived from ICOS comprises an amino acid sequence according to SEQ ID NO: 9.
In some embodiments, the CIP disclosed herein comprises a first signal transduction domain comprising a portion of a CD28 intracellular domain combined with an ICOS domain according to SEQ ID NO: 9. In some embodiments of the CIP disclosed herein, the first signal transduction domain comprises an amino acid sequence according to any one of SEQ ID NOs: 12 or 109. In some embodiments, the CIP disclosed herein comprises a first signal transduction domain derived from CD28. In some embodiments of the CIP disclosed herein, the first signal transduction domain derived from CD28 comprises an amino acid sequence according to SEQ ID NO: 10. In some embodiments of the CIP disclosed herein, the first signal transduction domain derived from CD28 comprises an amino acid sequence according to any one of SEQ ID NOs: 121-122. In some embodiments, the CIP comprises an amino acid sequence according to any one of SEQ ID NOs: 14-17.
In some embodiments, the CIP disclosed herein further comprises a third signal transduction domain. In some embodiments, the CIP disclosed herein further comprises a third signal transduction domain derived from any one of a CD3 signaling domain, a CD2 signaling domain or an interleukin 2 receptor binding (IL-2RB) protein signaling domain or a combination thereof. In some embodiments, the CD3 signaling domain of the CIP disclosed herein is derived form a CD3ζ or a CD3ε domain or a combination thereof. In some embodiments, the CD3 signaling domain of the CIP disclosed herein is a CD3 domain comprising an amino acid sequence according to any one of SEQ ID NOs: 18, 45, 46, 47 and 48.
In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 18. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3 domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 18. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 45. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 45. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a truncated CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 46. In some embodiments, the third signal transduction domain of the CIP disclosed herein, the third signal transduction domain of the CIP disclosed herein is a truncated CD3 domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 46. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ε domain comprising an amino acid sequence according to SEQ ID NO: 47. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ε domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 47. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a combination of a CD3ε and a truncated CD3ζ domains (CD3ζε domain). In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ζε domain comprising an amino acid sequence according to SEQ ID NO: 48. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD3ζε domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 48.
In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD2 signaling domain. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a mutant CD2 signaling domain. In some embodiments, the mutant CD2 signaling domain is a truncated CD2 signaling domain. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD2 signaling domain comprising an amino acid sequence according to SEQ ID NO: 49. In some embodiments, the third signal transduction domain of the CIP disclosed herein is a CD2 signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 49.
In some embodiments, the third signal transduction domain of the CIP disclosed herein, is an IL-2RB protein signaling domain comprising an amino acid sequence according to SEQ ID NO: 50. In some embodiments, the third signal transduction domain of the CIP disclosed herein is an IL-2RB protein signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 50.
In some embodiments, the CIP disclosed herein further comprises a fourth signal transduction domain. In some embodiments, the CIP disclosed herein further comprises a fourth signal transduction domain derived from any one of a CD3 signaling domain, a CD2 signaling domain or an interleukin 2 receptor binding (IL-2RB) protein signaling domain or a combination thereof, wherein the third and the fourth signal transduction domain are not identical. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein, is derived form a CD3ζ or a CD3ε domain or a combination thereof. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3 domain comprising an amino acid sequence according to any one of SEQ ID NOs: 18, 45, 46, 47 and 48.
In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 18. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 18. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 45. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζ domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 45. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a truncated CD3ζ domain comprising an amino acid sequence having according to SEQ ID NO: 46. In some embodiments, the third signal transduction domain of the CIP disclosed herein, the fourth signal transduction domain of the CIP disclosed herein is a truncated CD3ζ domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to according to SEQ ID NO: 46. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ε domain comprising an amino acid sequence according to SEQ ID NO: 47. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ε domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 47. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a combination of a CD3ε and a truncated CD3ζ domains (CD3ζε domain). In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζε domain comprising an amino acid sequence according to SEQ ID NOs: 48. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD3ζε domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 48.
In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD2 signaling domain. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a mutant CD2 signaling domain. In some embodiments, the mutant CD2 signaling domain is a truncated CD2 signaling domain. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD2 signaling domain comprising an amino acid sequence according to SEQ ID NO: 49. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is a CD2 signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 49.
In some embodiments, the fourth signal transduction domain of the CIP disclosed herein, is an IL-2RB protein signaling domain comprising an amino acid sequence according to SEQ ID NO: 50. In some embodiments, the fourth signal transduction domain of the CIP disclosed herein is an IL-2RB protein signaling domain comprising an amino acid sequence having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 97% or 99% identity to SEQ ID NO: 50.
In some embodiments, the CIP disclosed herein is for expression in a T cell, wherein the T cell co-expresses at least one of the endogenous co-stimulatory molecules CD28, CD2, OX-40, ICOS, CD28, CD3, CD4, CD8 and CD40L or a combination thereof.
In some embodiments, the CIP disclosed herein, is co-expressed with a T cell receptor (TCR) in a T cell. In some embodiments, the TCR is an endogenous TCR. In some embodiments, the TCR is an artificial TCR. In some embodiments, the artificial TCR is an affinity enhanced TCR. In some embodiments, the CIP when co-expressed with a TCR in a T cell provides a second activation signal for inducing activation and proliferation of the T cell, wherein the first activation signal is provided by antigen binding by the TCR.
In some embodiments, the CIP disclosed herein, is expressed in a T cell as a component of an artificial receptor for a target. In some embodiments, the artificial receptor is a chimeric antigen receptor (CAR), a receptor for a ligand or a component thereof, an antibody or a fragment thereof. In some embodiments, the CIP disclosed herein, is expressed as a component of a CAR. In some embodiments, the CIP disclosed herein, is expressed as a component of an antibody or a fragment thereof. In some embodiments, the antibody or a fragment thereof is a Fab fragment, a F(ab)2 fragment, a diabody, a nanobody, a sdAb, a Fv, a VHH fragment, or a single chain Fv fragment. In some embodiments, the CIP expressed as a component of an artificial receptor in a T cell, as disclosed herein induces activation and proliferation of the T cell upon target binding by the artificial receptor.
The term “about” or “approximately” can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. In some embodiments, “about” or “approximately” can be understood as within 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. In some embodiments, “about” or “approximately” can be understood as within 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. In some embodiments, “about” or “approximately” can be understood as within 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value.
The following examples are provided to better illustrate the present disclosure and are not to be interpreted as limiting the scope of the disclosure. To the extent that specific materials are mentioned, it is merely for purposes of illustration and is not intended to limit the disclosure. One skilled in the art may develop equivalent means or reactants without the exercise of inventive capacity and without departing from the scope of the disclosure.
DMEM was supplemented with Penn/Strep/Glutamine, 20 mM HEPES, 10 μg/mL Gentamycin and 10% FBS to make complete DMEM. RPMI was supplemented with Penn/Strep/Glutamine, 20 mM HEPES, 10 μg/mL Gentamycin, 10% FBS, and 50 uM 2-ME to make complete RPMI. T cell growth media was made by supplementing complete RPMI with 50 ng/ml IL2, 10 ng/ml IL7, and 10 ng/mL IL15 (Peprotech). X-Vivo15 was supplemented with 1% Human Serum, 20 mM HEPES, Penn/Strep/Glutamine, and 10 μg/mL Gentamycin to make Cytokine Media. Human PBMCs were purchased from iSpecimen and cultured in complete RPMI. 293FT were purchased from Invitrogen. K562 and A375 cells were purchased from ATCC and cultured in complete DMEM.
Plasmids and Cloning A lentiviral plasmid containing the PGK promoter driving a truncated human EGFR receptor (huEGFRt) followed by the MSCV promoter driving GFP and a subsequent WPRE sequence was ordered from vector builder. Co-stimulatory molecules followed by a P2A sequence were ordered as a single gene block (Invitrogen) and placed in frame with the huEGFRt sequence using NEB builder homology-based recombination. CAR and TCR sequences were constructed from 3 gene block fragments (Invitrogen) and cloned with NEB builder downstream of the MSCV promoter following GFP excision. PD-L1_P2A and HLA-A2 were cloned in frame with the huEGFRt and in place of GFP, respectively.
VSV pseudotyped lentivirus was produced in 6 well plates. In brief, 293FT were seeded the night before or the day of at 0.9×106 or 1.4×106 cells/well, respectively. Once the cells had adhered and reached at least 80% confluency a mix of lentiviral plasmid, packaging vector (psPAX2) and VSV-G envelope expressing plasmid (PMD2.G) were transfected using lipofectamine 3000 (Invitrogen), according to the manufacturer's protocol. After 18 hrs, the media was replaced with 3mLs of fresh DMEM. Viral supernatants were harvested 48 hrs following changing the media and spun down at 1500RPM to remove 293FT cell/debris. Retronectin was coated on 24 well non-tissue culture treated plates at 20 m/well in PBS−/− for 2 hrs at 37° C. or overnight at 4° C. Retronectin was removed and washed once with PBS prior to addition of lentiviral SN (2mLs). The plate was then spun at 1500 G for 90 minutes at 32° C. to concentrate viral particles onto the retronectin. Lentiviral SN was removed immediately prior to transduction of primary T cells or tumor cells. Alternatively, T cells were transduced with polybrene at 8 ug/mL with a spinfection of 800 G for 2 hrs at 32° C.
Human PBMCs were activated in T cell growth media with CD3/28 microbeads (Invitrogen) in complete RPMI (100 ul beads/50×106 PBMCs). 48 hrs after activation, activated PBMCs were transferred to Lentiviral-coated Retronectin plates for 48 hrs before being transferred to 6 well plates containing fresh T cell growth media. After an additional 24 hrs in culture cell transduction was determined by flow cytometry and transduced cells were enriched based on huEGFRt expression. To isolate cells based on EGFR expression, T cells cultures were collected and activation beads removed. Cells were then stained in 1:100 anti-EGFR-APC antibody in MACS buffer at 4° C. for 30 minutes. Cells were then washed and incubated with anti-APC microbeads (Miltenyi) for 15-30 minutes at 4° C. Unbound microbeads were then removed by centrifugation and huEGFRt cells were isolated by positive selection on mini-macs columns. Cells were eluted from the mini-MACS columns and put back into culture in T cell growth media and used within 2 weeks for experiments. To create stable cell lines, cells were collected and transduced as with primary T cells. EGFR selection was performed twice, two weeks apart.
In the case where T cells were stimulated with plate bound antibodies, maxisorp Flat-bottom plates (Invitrogen) were coated with the indicated amount of anti-human CD3 antibody (HIT3a-Biolegend) in PBS−/− for 2 hrs at 37° C. Plates were washed twice in basal RPMI before use. For K562 stimulation K562 cells were collected and resuspended in Cytokine media and aliquoted to U-bottom plates. Similarly, A375 cells were plated 1 day prior to the addition of T cells in DMEM in 96 well flat-bottom plates. The media was exchanged prior to the addition of cognate T cells. Following EGFR+ selection, T cells were collected, counted, and resuspended at the appropriate concentration in Cytokine media and distributed to antibody or APC-bearing wells. For K562 experiments anti-CD3 (HIT3a/Biolegend) was added at the indicated dose following 1-2 hrs of K562/T cell interaction at 37° C. In the case where T cell proliferation was to be tracked, T cells were labelled with Violet Tracking Dye (CTV) according to Biolegend's protocol prior to the addition to stimulatory plates. Supernatant was collected at 18-36 hr post stimulation to assess cytokine secretion and proliferation/T cell killing was assessed following 96 hrs of stimulation.
Following collection of T cell supernatants cytokines were measured with the Legendplex Multi-Analyte Flow Assay Kit foe human Th or Th1 cytokines (Biolegend). Manufactures protocol was followed with the following exceptions: 75 uL T cell SN was used to measure cytokines and 2 uL of each reagent was used/well. Secreted cytokines were measured by flow cytometry and the values were normalized to the maximal response of the control group in order to combine and analyze multiple experiments and normalize for variability between experiments and donors.
To assess conjugation of T cells to target cells, T cells were labelled with CFSE (Biolegend) and K562_HLA-A2 or K562_HLA-A2_PD-L1 cells were labelled with CTV according to manufacturer's protocols. T cells and APCs were mixed in a 1:2 ratio and briefly centrifuged in a 1.5 mL eppendorf tube to encourage conjugation. Cell pellets were incubated at 37° C. for 30 minutes and then cell pellets were gently resuspended by repeat pipetting (20×) with a p200 and a cut-off pipette tip and assessed immediately by flow cytometry.
Cells were collected and washed in MACS Buffer (PBS−/−, 1% FBS, 1 mM EDTA) before being stained in MACS buffer containing relevant antibodies. Anti-EGFR-APC, anti-mouse TCRbeta-FITC, anti-human PD1-PE, anti-CD3 APC-Cy7, anti-CD8 PE-Cy7 were all purchased from biolegend. Following addition of antibodies, cells were stained for 30-60 minutes at 4° C. For the detection of CD-19 CAR expression cells were incubated with CD-19Fc recombinant protein in MACS buffer at 1 μg/mL for 30 minutes at RT. Cells were then washed and incubated with anti-human FC antibody at 1:100 dilution. Cells were then washed 3× in MACS buffer and analyzed on an Acea NovoCyte flow cytometer. Cells were collected at constant volume, allowing for accurate cell counts to be obtained.
The disclosure herein provides the design of the co-stimulatory molecules comprising intracellular signaling domains comprising or derived from CD137/4-1BB or CD134/OX-40 receptors as depicted in
The disclosure herein provides the design of the co-stimulatory molecules and validation of their effect on function of a high affinity TCR. The co-stimulatory molecules described herein were designed as depicted in
Following transduction, T cells were isolated based on the expression of huEGFRt, to >90% purity, and used in restimulation experiments. The results disclosed herein demonstrate that, in-vitro, engagement of co-stimulatory molecule enhanced T cell cytokine production and proliferation, especially at lower doses of anti-CD3 antibody (
The effect of the receptors with mutation of the polybasic and lysine residues is less than the PD1_ICOS_BBt co-stimulatory molecule, in terms of both surface expression of the co-stimulatory molecule (
Further, the ICOS-based co-stimulatory molecules encouraged T cell: PD-L1 expressing (PD-L1+) target cell interaction in a flow-based conjugation assay, suggesting that these receptors encourage prolonged T cell—APC interactions while scanning for cognate antigen, a useful property when scanning for low-abundance antigen in the TME (
The disclosure herein shows that the co-stimulatory molecules based on the modified 3rd-generation intracellular signaling domain disclosed herein are superior to currently existing PD1_28 co-stimulatory molecules in enhancing T cell effector function when responding to a PD-L1+ target cell. This includes increased T cell proliferation, cytokine secretion, and target cell killing. The 3rd-generation intracellular signaling domain disclosed herein can be successfully combined with TCR-T therapy targeting TAAs.
Described herein are T cells expressing specific HLA-A2/NY-ESO specific TCRs and co-stimulatory molecules comprising ICOS and mutated CD137 signaling domains, that increase expression of the co-stimulatory molecule on T cell surface (
Described herein are CD-19 CAR constructs comprising the modified 3rd-generation intracellular signaling domains disclosed herein. The CD-19 (FMC63scFV) CARs with 3rd-generation intracellular signaling constructs described herein include constructs comprising the intracellular chimeric domains: CD28-CD137-CD3ζ (28_BBwt_z), CD28-CD137mutant-CD3ζ (28_BBt_z), CD28-CD134mutant-CD3ζ (28_OX40t_Z), ICOS-CD137-CD3ζ (ICOS_BB_z), ICOS-CD137mutant-CD3ζ (ICOS_BBt_z), and ICOS-CD134mutant-CD3ζ (ICOS_OX40t_z). Also, provided are CD-19 CARs with a 3rd-generation intracellular signaling construct with a portion of CD28 inserted within the ICOS domain: ICOS(28)-CD137-CD3ζ (ICOS(28)_BBwt_z), ICOS(28)-CD137mutant-CD3ζ (ICOS(28)_BBt_z), and ICOS(28)-CD134mutant-CD3ζ(ICOS(28)_OX40t_z). Second-generation constructs comprising CD137-CD3ζ (BBwt_z), CD28-CD3ζ (28_z) and ICOS-CD3ζ (ICOS_z) are used as controls. Similar to the study described herein using the PD-1 3rd-generation intracellular signaling constructs, the CD19 CAR constructs with the CD137 and CD134 mutants domains showed higher expression as compared to the corresponding constructs with wild type CD137 and CD134 domains (28_BBwt_z and ICOS_BBwt_z, respectively) (
The disclosure also shows that expression of CD28 based receptors comprising a mutated CD134/CD137 signaling domains and ICOS based receptors comprising a mutated CD134/CD137 signaling domains, increased binding of BCMA specific T cells (BCMA CAR T cells) to the target antigen (BCMA-Fc) (
This application claims priority to and the benefit of U.S. Provisional Application No. 63/163,171, filed on Mar. 19, 2021 and U.S. Provisional Application No. 63/133,494, filed on Jan. 4, 2021, the contents of each of which are hereby incorporated by reference in their entirety.
Number | Date | Country | |
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63133494 | Jan 2021 | US | |
63163171 | Mar 2021 | US |