Method for making antibody Fc-heterodimeric molecules using electrostatic steering effects
The invention relates to methods of making Fc-heterodimeric proteins or polypeptides. The invention also relates to the Fc-heterodimeric proteins or polypeptides themselves, including the individual polypeptide components that comprise the heterodimer. Nucleic acids encoding such polypeptides, expression vectors, and host cells. Moreover, the invention relates to pharmaceutical compositions comprising one of more Fc-heterodimeric proteins or polypeptides.
1. An isolated heterodimeric protein comprising a first human CH3-containing polypeptide and a second human IgG CH3-containing polypeptide wherein said first human CH3-containing polypeptide comprises a replacement of the amino acid at position 392 with a negative-charged amino acid and said second human IgG CH3-containing polypeptide comprises a replacement of Asp399, Glu356, Asp356, or Glu357 with a positive-charged amino acid.
2. The isolated heterodimeric protein of claim 1 , wherein Lys392 is replaced with a negative-charged amino acid.
3. The isolated heterodimeric protein of claim 2 , wherein Asn392 is replaced with a negative-charged amino acid.
4. The isolated heterodimeric protein of claim 1 , wherein said first human CH3-containing polypeptide further comprises Lys409 or Arg409 replaced with a negative-charged amino acid.
5. The isolated heterodimeric protein of claim 4 , wherein said first human CH3-containing polypeptide wherein Lys392 or Asn392 is replaced with aspartic acid.
6. The isolated heterodimeric protein of claim 5 , wherein said Lys409 or Arg409 is replaced with aspartic acid.
7. The isolated heterodimeric protein of claim 6 , wherein said second human IgG CH3-containing polypeptide comprises a replacement of Asp399, Glu356, Asp356, or Glu357 with lysine.
8. The isolated heterodimeric protein of claim 7 , wherein said second human IgG CH3-containing polypeptide comprises a replacement of Asp399 and Glu356 with lysine.
9. The isolated heterodimeric protein of claim 1 , wherein the heterodimeric protein comprises a human IgG Fc region.
10. The isolated heterodimeric protein of claim 9 , wherein the human IgG Fc region comprises an IgG1 Fc region.
11. The isolated heterodimeric protein of claim 9 , wherein the IgG Fc region comprises an IgG2 Fc region.
12. The isolated heterodimeric protein of claim 9 , wherein the IgG Fc region comprises an IgG3 Fc region.
13. The isolated heterodimeric protein of claim 9 , wherein the IgG Fc region comprises an IgG4 Fc region.
14. The isolated heterodimeric protein of claim 1 , wherein the first CH3-containing polypeptide is an antibody heavy chain.
15. The isolated heterodimeric protein of claim 1 , wherein the second CH3-containing polypeptide is an antibody heavy chain.
16. The isolated heterodimeric protein of claim 1 , wherein the heterodimeric protein further comprises one or more antibody light chains.
17. The isolated heterodimeric protein of claim 1 , wherein the heterodimeric protein is selected from the group consisting of an antibody, a bispecific antibody, a monospecific monovalent antibody, a bispecific maxibody, a monobody, a peptibody, a bispecific peptibody, a monovalent peptibody, and a receptor fusion protein.
18. A pharmaceutical composition comprising a heterodimeric protein of claim 1 .