MONOVALENT ANTIBODY FRAGMENTS USEFUL AS THERAPEUTICS
First Claim
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1. An antibody fragment comprising a single antigen binding arm and an Fc region that increases stability of said antibody fragment compared to a Fab molecule comprising said antigen binding arm, wherein the Fc region comprises a complex of a first and a second Fc polypeptide, wherein one but not both of the Fc polypeptides is an N-terminally truncated heavy chain.
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Abstract
The invention provides methods and compositions comprising a novel stabilized monovalent antibody fragment.
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97 Claims
- 1. An antibody fragment comprising a single antigen binding arm and an Fc region that increases stability of said antibody fragment compared to a Fab molecule comprising said antigen binding arm, wherein the Fc region comprises a complex of a first and a second Fc polypeptide, wherein one but not both of the Fc polypeptides is an N-terminally truncated heavy chain.
- 96. A method of generating an antibody fragment comprising a single antigen binding arm and an Fc region that increases stability of the antibody fragment compared to a Fab molecule comprising said antigen binding arm, said method comprising expressing in a suitable host cell nucleic encoding the antigen binding arm and a first and second Fc polypeptide under conditions the permit formation of the antigen binding arm and dimerization of the first and second Fc polypeptides to form said Fc region, wherein one but not both of the Fc polypeptides is an N-terminally truncated heavy chain.
Specification