Anti-TIM-3 antibodies and methods of use thereof
The instant disclosure provides antibodies that specifically bind to TIM 3 and antagonize TIM-3 function. Also provided are pharmaceutical compositions comprising these antibodies, nucleic acids encoding these antibodies, expression vectors and host cells for making these antibodies, and methods of treating a subject using these antibodies.
1. An isolated antibody that specifically binds to human T-cell immunoglobulin and mucin-domain containing-3 (TIM-3) comprising a heavy chain variable region (VH) comprising complementarity determining regions CDRH1, CDRH2, and CDRH3 and a light chain variable region (VL) comprising complementarity determining regions CDRL1, CDRL2, and CDRL3, wherein the VH comprises the CDRH1, CDRH2, and CDRH3 of an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26 and the VL comprises the CDRL1, CDRL2, and CDRL3 of an amino acid sequence selected from the group consisting of SEQ ID NOs: 37, 39, 40, 41, 44, and 47.
2. The isolated antibody of claim 1 , wherein the CDRH1, CDRH2, and CDRH3 comprise the amino acid sequences of SEQ ID NOs: 1, 2, and 3, respectively.
3. The isolated antibody of claim 1 , wherein the CDRL1, CDRL2, and CDRL3 comprise amino acid sequences selected from the group consisting of SEQ ID NOs: 14, 20, and 22; 14, 17, and 22; 14, 17, and 23; 14, 19, and 22; and 16, 20, and 22, respectively.
4. The isolated antibody of claim 1 , wherein the CDRH1, CDRH2, and CDRH3 comprise the amino acid sequences of SEQ ID NOs: 1, 2, and 3, respectively, and the CDRL1, CDRL2, and CDRL3 comprise amino acid sequences selected from the group consisting of SEQ ID NOs: 14, 20, and 22; 14, 17, and 22; 14, 17, and 23; 14, 19, and 22; and 16, 20, and 22, respectively.
5. The isolated antibody of claim 1 , wherein the VH comprises an amino acid sequence at least 95% identical to an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26.
6. The isolated antibody of claim 1 , wherein the VH comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26.
7. The isolated antibody of claim 1 , wherein the VL comprises an amino acid sequence at least 95% identical to an amino acid sequence selected from the group consisting of SEQ ID NOs: 37, 39, 40, 41, 44, and 47.
8. The isolated antibody of claim 1 , wherein the VL comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 37, 39, 40, 41, 44, and 47.
9. The isolated antibody of claim 1 , wherein the VH comprises an amino acid sequence at least 95% identical to an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26, and the VL comprises an amino acid sequence at least 95% identical to an amino acid sequence selected from the group consisting of SEQ ID NOs: 37, 39, 40, 41, 44, and 47.
10. The isolated antibody of claim 1 , wherein the VH comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26, and the VL comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 37, 39, 40, 41, 44, and 47.
11. The isolated antibody of claim 1 , wherein the VH and VL comprise amino acid sequences at least 95% identical to the amino acid sequences of SEQ ID NOs: 26 and 41, 24 and 41, 25 and 39, 24 and 47, 25 and 40, 26 and 47, 25 and 37, 25 and 44, 25 and 41, or 25 and 47, respectively.
12. The isolated antibody of claim 1 , wherein the VH and VL comprise the amino acid sequences of SEQ ID NOs: 26 and 41, 24 and 41, 25 and 39, 24 and 47, 25 and 40, 26 and 47, 25 and 37, 25 and 44, 25 and 41, or 25 and 47, respectively.
13. The isolated antibody of claim 1 , wherein the antibody comprises a heavy chain constant region selected from the group consisting of a wild type human IgG 1 , IgG 2 , IgG 3 , IgG 4 , IgA 1 , and IgA 2 , or a variant thereof.
14. The isolated antibody of claim 13 , wherein the heavy chain constant region is selected from the group consisting of:
(a) the variant of the wild type human IgG heavy chain constant region, wherein the variant human IgG heavy chain constant region binds to a human Fc gamma receptor with lower affinity than the wild type human IgG heavy chain constant region binds to the human Fc gamma receptor, optionally wherein the human Fc gamma receptor is selected from the group consisting of FcγRI, FcγRII, and FcγRIII;
(b) IgG 1 comprising an N297A mutation, numbered according to the EU numbering system;
(c) IgG 1 comprising an N297Q mutation, numbered according to the EU numbering system;
(d) non-fucosylated IgG 1 ; and
(e) IgG 4 comprising an S228P mutation.
15. The isolated antibody of claim 13 , wherein the heavy chain constant region comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 70, 71, 72, 73, 74, and 75.
16. The isolated antibody of claim 1 , wherein the antibody comprises a light chain constant region selected from the group consisting of human kappa light chain and human lambda light chain.
17. The isolated antibody of claim 16 , wherein the light chain constant region comprises the amino acid sequence of SEQ ID NO: 76 or 77.
18. The isolated antibody of claim 12 , wherein the antibody comprises a heavy chain constant region selected from the group consisting of a wild type human IgG 1 , IgG 2 , IgG 3 , IgG 4 , IgA 1 , and IgA 2 , or a variant thereof.
19. The isolated antibody of claim 18 , wherein the heavy chain constant region is selected from the group consisting of:
(a) the variant of the wild type human IgG heavy chain constant region, wherein the variant human IgG heavy chain constant region binds to a human Fc gamma receptor with lower affinity than the wild type human IgG heavy chain constant region binds to the human Fc gamma receptor, optionally wherein the human Fc gamma receptor is selected from the group consisting of FcγRI, FcγRII, and FcγRIII;
(b) IgG 1 comprising an N297A mutation, numbered according to the EU numbering system;
(c) IgG 1 comprising an N297Q mutation, numbered according to the EU numbering system;
(d) non-fucosylated IgG 1 ; and
(e) IgG 4 comprising an S228P mutation.
20. The isolated antibody of claim 18 , wherein the heavy chain constant region comprises an amino acid sequence selected from the group consisting of SEQ ID NOs: 70, 71, 72, 73, 74, and 75.
21. The isolated antibody of claim 12 , wherein the antibody comprises a light chain constant region selected from the group consisting of human kappa light chain and human lambda light chain.
22. The isolated antibody of claim 21 , wherein the light chain constant region comprises the amino acid sequence of SEQ ID NO: 76 or 77.
23. A polypeptide comprising a VL comprising an amino acid sequence selected from the group consisting of SEQ ID NOs: [37,] 39, 40, 41, 44, and 47.
24. The polypeptide of claim 23 , wherein the polypeptide is an antibody light chain.
25. A pharmaceutical composition comprising the antibody of claim 1 and a pharmaceutically acceptable carrier or excipient.
26. A polypeptide comprising a VH comprising an amino acid sequence selected from the group consisting of SEQ ID NOs: 24, 25, and 26.
27. The polypeptide of claim 26 , wherein the polypeptide is an antibody heavy chain.
28. The polypeptide of claim 27 , wherein the amino acid sequence of the polypeptide consists of an amino acid sequence selected from the group consisting of SEQ ID NOs: 57, 58, and 59.