Inert format
Described herein are, proteins comprising amino acid substitutions in at least one of a first and a second polypeptide chain. Furthermore, is described the uses and methods related to said proteins.
1. A method of treating a disease comprising administering to a subject in need thereof an effective amount of a protein comprising a first polypeptide and a second polypeptide, wherein said first polypeptide and second polypeptide each comprises at least a hinge region, a CH2 region, and a CH3 region of an immunoglobulin heavy chain, wherein in at least one of said first polypeptide and second polypeptide, the amino acids in the positions corresponding to positions L234, L235, and D265 in a human IgG1 heavy chain are F, E, and A, respectively, and wherein the amino acids are numbered according to the EU Index.
2. The method according to claim 1 , wherein the amino acids in the positions corresponding to positions N297 and P331 in a human IgG1 heavy chain are not Q and S, respectively.
3. The method according to claim 1 , wherein said first polypeptide and second polypeptide are a first heavy chain and a second heavy chain of an immunoglobulin, respectively.
4. The method according to claim 1 , wherein said first polypeptide and second polypeptide further comprise a first binding region and a second binding region, respectively.
5. The method according to claim 1 , wherein said protein further comprises a first light chain and a second light chain of an immunoglobulin, wherein said first light chain is connected with said first heavy chain via disulfide bridges and said second light chain is connected with said second heavy chain via disulfide bridges, thereby forming a first binding region and a second binding region, respectively.
6. The method according to claim 4 , wherein at least one of said first binding region and second binding region binds to CD3.
7. The method according to claim 4 , wherein both said first binding region and second binding region bind to CD3.
8. The method according to claim 1 , wherein the isotype of the immunoglobulin heavy chain is selected from the group consisting of IgG1, IgG2, IgG3, and IgG4.
9. The method according to claim 7 , wherein at least said first binding region is selected from the group consisting of:
a. a binding region comprising a heavy chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 6 and a light chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 12;
b. a binding region comprising a heavy chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 8 and a light chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 12; and
c. a binding region comprising a heavy chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 9 and a light chain variable region comprising the amino acid sequence set forth in SEQ ID NO: 12.
10. The method according to claim 4 , wherein said first binding region binds a different target than said second binding region.
11. The method according to claim 10 , wherein the target to which the first binding region binds is present on different cells than the target to which the second binding region binds.
12. The method according to claim 1 , wherein in said first polypeptide, at least one of the amino acids in the positions corresponding to a position selected from the group consisting of T366, L368, K370, D399, F405, Y407, and K409 in a human IgG1 heavy chain has been substituted, and in said second polypeptide, at least one of the amino acids in the positions corresponding to a position selected from the group consisting of: T366, L368, K370, D399, F405, Y407, and K409 in a human IgG1 heavy chain has been substituted, and wherein said substitutions of said first polypeptide and said second polypeptide are not in the same positions.
13. The method according to claim 12 , wherein the amino acid in the position corresponding to F405 in a human IgG1 heavy chain is L in said first polypeptide, and the amino acid in the position corresponding to K409 in a human IgG1 heavy chain is R in said second polypeptide, or vice versa.
14. The method according to claim 1 , wherein the protein is an antibody.
15. The method according to claim 1 , wherein the protein is a bispecific antibody.
16. The method according to claim 4 , wherein in both said first polypeptide and second polypeptide, the amino acids in the positions corresponding to L234, L235 and D265 in a human IgG1 heavy chain are F, E, and A, respectively, said first binding region binds CD3, and said second binding region binds a cancer-specific target.
17. The method according to claim 1 , wherein the disease is cancer.
18. The method according to claim 1 , wherein the disease is infectious disease.
19. The method according to claim 1 , wherein the disease is autoimmune disease.
20. The method according to claim 1 , wherein the amino acids at positions corresponding to positions N297 and P331 in a human IgG1 heavy chain are N and P, respectively.