Molecules with extended half-lives, compositions and uses thereof
View Patent ↗The present invention provides molecules, including IgGs, non-IgG immunoglobulins, proteins and non-protein agents, that have increased in vivo half-lives due to the presence of an IgG constant domain, or a portion thereof that binds the FcRn, having one or more amino acid modifications that increase the affinity of the constant domain or fragment for FcRn. Such proteins and molecules with increased half-lives have the advantage that smaller amounts and or less frequent dosing is required in the therapeutic, prophylactic or diagnostic use of such molecules.
1. A modified IgG, comprising a human IgG constant domain comprising one or more amino acid substitutions relative to a wild-type human IgG constant domain at one or more of amino acid residues 252, 254, 256, 309, 311, 433 or 434, numbered according to the EU index as in Kabat, wherein the one or more amino acid substitutions is
a tyrosine, phenylalanine, serine, tryptophan or threonine amino acid substitution at amino acid residue 252;
a threonine amino acid substitution at amino acid residue 254;
a serine, arginine, glutamine, glutamic acid or aspartic acid amino acid substitution at amino acid residue 256;
a proline amino acid substitution at amino acid residue 309;
a serine, glutamic acid or leucine amino acid substitution at amino acid residue 311;
an arginine, serine, isoleucine, proline or glutamine amino acid substitution at amino acid residue 433; or
a histidine, phenylalanine or tyrosine amino acid substitution at amino acid residue 434;
wherein the modified IgG has an increased half-life compared to the half-life of an IgG having the wild-type human IgG constant domain, and wherein the modified IgG immunospecifically binds to tumor necrosis factor (TNF).
2. The modified IgG of claim 1 , wherein the TNF is TNF-alpha (TNF-α).
3. The modified IgG of claim 1 , wherein the TNF is TNF-beta (TNF-β).
4. A modified IgG comprising an IgG constant domain, wherein the IgG constant domain comprises:
(i) a human CH2 domain in which there is one or more amino acid substitutions at one or more of amino acid residues 252, 254, 256, 309 or 311, numbered according to the EU index as in Kabat, relative to a corresponding IgG constant domain comprising a wild-type human CH2 domain;
(ii) a human CH3 domain in which there is one or more amino acid substitutions at one or more of amino acid residues 433 or 434, numbered according to EU index as in Kabat, relative to a corresponding IgG constant domain comprising a wild-type human CH3 domain; or
(iii) both (i) and (ii); and
wherein the one or more amino acid substitutions is
a tyrosine, phenylalanine, seine, tryptophan or threonine amino acid substitution at amino acid residue 252;
a threonine amino acid substitution at amino acid residue 254;
a serine, arginine, glutamine, glutamic acid or aspartic acid amino acid substitution at amino acid residue 256;
a proline amino acid substitution at amino acid residue 309;
a serine, glutamic acid or leucine amino acid substitution at amino acid residue 311;
an arginine, serine, isoleucine, proline or glutamine amino acid substitution at amino acid residue 433; or
a histidine, phenylalanine or tyrosine amino acid substitution at amino acid residue 434; and
wherein the modified IgG has an increased half-life compared to the half-life of an IgG comprising a corresponding IgG constant domain comprising a wild-type human CH2 domain, a wild-type human CH3 domain, or both a wild-type human CH2 domain and a wild-type human CH3 domain, and wherein the modified IgG immunospecifically binds to TNF.
5. The modified IgG of claim 1 , wherein the one or more amino acid substitutions is a tyrosine amino acid substitution at amino acid residue 252, a threonine amino acid substitution at amino acid residue 254, and a glutamic acid amino acid substitution at amino acid residue 256.
6. The modified IgG of claim 4 , wherein the one or more amino acid substitutions is a tyrosine amino acid substitution at amino acid residue 252, a threonine amino acid substitution at amino acid residue 254, and a glutamic acid amino acid substitution at amino acid residue 256.
7. The modified IgG of claim 1 , wherein the IgG constant domain comprises a phenylalanine amino acid substitution at amino acid residue 434, and wherein the IgG constant domain further comprises a lysine amino acid substitution at amino acid residue 433 and a histidine, asparagine, arginine, threonine, lysine or methionine amino acid substitution at amino acid residue 436, relative to a wild-type human IgG constant domain numbered according to the EU index as in Kabat.
8. The modified IgG of claim 4 , wherein the IgG constant domain comprises a phenylalanine amino acid substitution at amino acid residue 434, and wherein the IgG constant domain further comprises a lysine amino acid substitution at amino acid residue 433 and a histidine, asparagine, arginine, threonine, lysine or methionine amino acid substitution at amino acid residue 436, relative to a wild-type human IgG constant domain, numbered according to the EU index as in Kabat.
9. The modified IgG of claim 1 , further comprising one or more amino acid substitutions relative to a wild-type human IgG constant domain at one or more of amino acid residues 385, 386, 387 or 389, numbered according to the EU index as in Kabat, wherein the one or more amino acid substitutions is
an arginine, aspartic acid, seine, threonine, histidine, lysine or alanine amino acid substitution at amino acid residue 385;
a threonine, proline, aspartic acid, serine, lysine, arginine, isoleucine or methionine amino acid substitution at amino acid residue 386;
an arginine, histidine, serine, threonine or alanine amino acid substitution at amino acid residue 387; or
a proline or seine amino acid substitution at amino acid residue 389.
10. The modified IgG of claim 1 , wherein the IgG constant domain further comprises one or more amino acid substitutions relative to a wild-type human IgG constant domain at one or more of amino acid residues 251, 253, 255, 285-290, 308, 310, 312-314, 385-389, 428-432, 435 or 436.
11. The modified IgG of claim 1 , wherein the human IgG constant domain comprising the one or more amino acid substitutions has a higher affinity for FcRn than a wild-type human IgG constant domain thereof.
12. The modified IgG according to claim 11 , wherein the human IgG constant domain comprising the one or more amino acid substitutions has a higher affinity for FcRn than a wild-type human IgG constant domain thereof at pH 6.0 than at pH 7.4.
13. The modified IgG according to claim 1 , wherein the modified IgG is a modified human IgG or a humanized IgG.
14. The modified IgG according to claim 1 , wherein the human IgG constant domain is the constant domain of IgG 1 , IgG 2 , IgG 3 or IgG 4 .
15. The modified IgG according to claim 14 , wherein the human IgG constant domain is the constant domain of IgG 1 .
16. The modified IgG of claim 4 , wherein the TNF is TNF-α.
17. The modified IgG of claim 4 , wherein the TNF is TNF-β.
18. A pharmaceutical composition comprising the modified IgG of claim 1 , and a pharmaceutically acceptable carrier.
19. A pharmaceutical composition comprising the modified IgG of claim 4 , and a pharmaceutically acceptable carrier.
20. A pharmaceutical composition comprising the modified IgG of claim 5 , and a pharmaceutically acceptable carrier.
21. A pharmaceutical composition comprising the modified IgG of claim 6 , and a pharmaceutically acceptable carrier.
22. A kit comprising the modified IgG of claim 1 in a container, and instructions for use.
23. A kit comprising the modified IgG of claim 4 in a container, and instructions for use.
24. A kit comprising the modified IgG of claim 5 in a container, and instructions for use.
25. A kit comprising the modified IgG of claim 6 in a container, and instructions for use.
26. An antibody conjugate comprising the modified IgG according to claim 1 and a detectable substance.
27. An antibody conjugate comprising the modified IgG according to claim 4 and a detectable substance.
28. An antibody conjugate comprising the modified IgG according to claim 5 and a detectable substance.
29. An antibody conjugate comprising the modified IgG according to claim 6 and a detectable substance.
30. An antibody conjugate comprising the modified IgG according to claim 1 and a therapeutic moiety.
31. An antibody conjugate comprising the modified IgG according to claim 4 and a therapeutic moiety.
32. An antibody conjugate comprising the modified IgG according to claim 5 and a therapeutic moiety.
33. An antibody conjugate comprising the modified IgG according to claim 6 and a therapeutic moiety.
34. A pharmaceutical composition comprising the antibody conjugate according to claim 26 , and a pharmaceutically acceptable carrier.
35. A pharmaceutical composition comprising the antibody conjugate according to claim 27 , and a pharmaceutically acceptable carrier.
36. A pharmaceutical composition comprising the antibody conjugate according to claim 28 , and a pharmaceutically acceptable carrier.
37. A pharmaceutical composition comprising the antibody conjugate according to claim 29 , and a pharmaceutically acceptable carrier.
38. A pharmaceutical composition comprising the antibody conjugate according to claim 30 , and a pharmaceutically acceptable carrier.
39. A pharmaceutical composition comprising the antibody conjugate according to claim 31 , and a pharmaceutically acceptable carrier.
40. A pharmaceutical composition comprising the antibody conjugate according to claim 32 , and a pharmaceutically acceptable carrier.
41. A pharmaceutical composition comprising the antibody conjugate according to claim 33 , and a pharmaceutically acceptable carrier.
42. A kit comprising the antibody conjugate according to claim 26 , in a container, and instructions for use.
43. A kit comprising the antibody conjugate according to claim 27 , in a container, and instructions for use.
44. A kit comprising the antibody conjugate according to claim 28 , in a container, and instructions for use.
45. A kit comprising the antibody conjugate according to claim 29 , in a container, and instructions for use.
46. A kit comprising the antibody conjugate according to claim 30 , in a container, and instructions for use.
47. A kit comprising the antibody conjugate according to claim 31 , in a container, and instructions for use.
48. A kit comprising the antibody conjugate according to claim 32 , in a container, and instructions for use.
49. A kit comprising the antibody conjugate according to claim 33 , in a container, and instructions for use.