Engineering therapeutic antibodies for improved function.

Abstract:

:The binding sites on human IgG1 for human Fc gamma receptor (Fc gamma R) I, Fc gamma RIIa, Fc gamma RIIb, Fc gamma RIIIa and neonatal FcR have been mapped. A common set of IgG1 residues is involved in binding to all Fc gamma Rs, while Fc gamma RII and Fc gamma RIII utilize distinct sites outside this common set. In addition to residues which abrogated binding to the Fc gamma R, several positions were found which improved binding only to specific Fc gamma Rs or simultaneously improved binding to one type of Fc gamma R and reduced binding to another type. Selected IgG1 variants with improved binding to Fc gamma RIIIa were then tested in an in vitro antibody-dependent cellular cytotoxicity (ADCC) assay and showed an enhancement in ADCC when either peripheral blood mononuclear cells or natural killer cells were used.

journal_name

Biochem Soc Trans

authors

Presta LG,Shields RL,Namenuk AK,Hong K,Meng YG

doi

10.1042/bst0300487

keywords:

subject

Has Abstract

pub_date

2002-08-01 00:00:00

pages

487-90

issue

4

eissn

0300-5127

issn

1470-8752

journal_volume

30

pub_type

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