Monovalent binding proteins
First Claim
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1. A monovalent, monospecific binding protein comprising at least two variable heavy domains, at least two variable light domains, and four polypeptide chains, wherein two of said four polypeptide chains comprise VDH-(X1)n-C—
- (X2)n, whereinVDH is a heavy chain variable domain,X1 is a linker with the proviso that it is not CH1,C is a heavy chain constant domain,X2 is an Fc region,n is 0 or 1;
andwherein two of said four polypeptide chains comprise VDL-(X3)n-C—
(X4)n, whereinVDL is a light chain variable domain,X3 is a linker with the proviso that it is not CH1,C is a light chain constant domain,X4 does not comprise an Fc region;
n is 0 or 1;
wherein one of said at least two heavy chain variable domains and/or one of said at least two light chain variable domains comprises a non-naturally occurring mutation, wherein said mutation inhibits targeted binding between a specific antigen and—
a mutant binding domain formed by the variable domain comprising the mutation.
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Abstract
Engineered monovalent binding proteins that bind to one or more ligands (such as an antigen) via one binding domain are provided, along with methods of making and uses in the prevention, diagnosis, and/or treatment of disease.
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Citations
7 Claims
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1. A monovalent, monospecific binding protein comprising at least two variable heavy domains, at least two variable light domains, and four polypeptide chains, wherein two of said four polypeptide chains comprise VDH-(X1)n-C—
- (X2)n, wherein
VDH is a heavy chain variable domain, X1 is a linker with the proviso that it is not CH1, C is a heavy chain constant domain, X2 is an Fc region, n is 0 or 1; and wherein two of said four polypeptide chains comprise VDL-(X3)n-C—
(X4)n, whereinVDL is a light chain variable domain, X3 is a linker with the proviso that it is not CH1, C is a light chain constant domain, X4 does not comprise an Fc region; n is 0 or 1; wherein one of said at least two heavy chain variable domains and/or one of said at least two light chain variable domains comprises a non-naturally occurring mutation, wherein said mutation inhibits targeted binding between a specific antigen and—
a mutant binding domain formed by the variable domain comprising the mutation.- View Dependent Claims (2, 3, 4, 5, 6, 7)
- (X2)n, wherein
Specification