| Literature DB >> 20081867 |
Jonathan Zalevsky1, Aaron K Chamberlain, Holly M Horton, Sher Karki, Irene W L Leung, Thomas J Sproule, Greg A Lazar, Derry C Roopenian, John R Desjarlais.
Abstract
Improved affinity for the neonatal Fc receptor (FcRn) is known to extend antibody half-life in vivo. However, this has never been linked with enhanced therapeutic efficacy. We tested whether antibodies with half-lives extended up to fivefold in human (h)FcRn transgenic mice and threefold in cynomolgus monkeys retain efficacy at longer dosing intervals. We observed that prolonged exposure due to FcRn-mediated enhancement of half-life improved antitumor activity of Fc-engineered antibodies in an hFcRn/Rag1(-/-) mouse model. This bridges the demand for dosing convenience with the clinical necessity of maintaining efficacy.Entities:
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Year: 2010 PMID: 20081867 PMCID: PMC2855492 DOI: 10.1038/nbt.1601
Source DB: PubMed Journal: Nat Biotechnol ISSN: 1087-0156 Impact factor: 54.908