Methods for generating monovalent IgG
First Claim
1. A heterodimeric polypeptide comprising(a) a human or humanized IgG1, IgG2, or IgG4 heavy chain from an antibody that binds specifically to an antigen and that comprises an Fe region, wherein the heavy chain comprises a heavy chain variable (VH) region, followed by a first heavy chain constant (CH1) region, followed by a hinge region, followed by a second heavy chain constant (CH2) region, followed by a third heavy chain constant (CH3) region, and(b) a fusion protein, wherein the fusion protein comprises a light chain from the antibody followed by a human IgG1, IgG2, or IgG4 Fe molecule, wherein the light chain comprises a light chain variable (VL) region followed by a light chain constant (CL) region and wherein the human IgG1, IgG2, or IgG4 Fe molecule comprises a hinge region followed by a CH 2 region followed by a CH 3 region, wherein(i) the first five amino acids of the hinge region of the fusion protein are deleted, or(ii) the hinge region of the fusion protein is not shortened or lengthened,wherein the heavy chain and the fusion protein are two polypeptide chains that are oriented identically with respect to their N- and C-termini and associate to form the heterodimeric polypeptide,wherein the heterodimeric polypeptide is monovalent, andwherein the heterodimeric polypeptide is capable of specifically binding to the antigen.
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Abstract
The present invention relates to monovalent antibody, methods of making thereof and therapeutic uses thereof. In particular, the present invention provides a heterodimeric polypeptide comprising an immunoglobulin heavy chain and a fusion protein comprising an immunoglobulin light chain and an Fc molecule.
30 Citations
40 Claims
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1. A heterodimeric polypeptide comprising
(a) a human or humanized IgG1, IgG2, or IgG4 heavy chain from an antibody that binds specifically to an antigen and that comprises an Fe region, wherein the heavy chain comprises a heavy chain variable (VH) region, followed by a first heavy chain constant (CH1) region, followed by a hinge region, followed by a second heavy chain constant (CH2) region, followed by a third heavy chain constant (CH3) region, and (b) a fusion protein, wherein the fusion protein comprises a light chain from the antibody followed by a human IgG1, IgG2, or IgG4 Fe molecule, wherein the light chain comprises a light chain variable (VL) region followed by a light chain constant (CL) region and wherein the human IgG1, IgG2, or IgG4 Fe molecule comprises a hinge region followed by a CH 2 region followed by a CH 3 region, wherein (i) the first five amino acids of the hinge region of the fusion protein are deleted, or (ii) the hinge region of the fusion protein is not shortened or lengthened, wherein the heavy chain and the fusion protein are two polypeptide chains that are oriented identically with respect to their N- and C-termini and associate to form the heterodimeric polypeptide, wherein the heterodimeric polypeptide is monovalent, and wherein the heterodimeric polypeptide is capable of specifically binding to the antigen.
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40. An isolated heterodimeric polypeptide comprising a first polypeptide comprising the amino acid sequence set forth in SEQ ID NO:
- 9 and a second polypeptide comprising the amino acid sequence set forth in SEQ ID NO;
10.
- 9 and a second polypeptide comprising the amino acid sequence set forth in SEQ ID NO;
Specification