| Literature DB >> 14972542 |
Hyo Jeong Hong1, Chun Jeih Ryu, Hyangsuk Hur, Seho Kim, Han Kyu Oh, Mee Sook Oh, Song Yong Park.
Abstract
Previously, we generated a murine monoclonal antibody (mAb), KR127, that recognizes amino acids (aa) 37-45 of the preS1 of hepatitis B virus (HBV). In this study, we have constructed a humanized version of KR127 and evaluated its HBV-neutralizing activity in chimpanzees. A study chimpanzee was given a single intravenous dose of the humanized antibody, followed by intravenous challenge with adr subtype of wild type HBV, while a control chimpanzee was only challenged with the virus. The result showed that the study chimpanzee did not develop HBV infection during 1 year, while the control chimpanzee was infected, indicating that the humanized antibody exhibited in vivo virus-neutralizing activity and thus protected the chimpanzee from HBV infection. In addition, the humanized antibody bound to the preS1 of all subtypes of HBV. We first demonstrate that an anti-preS1 mAb can neutralize HBV infection in vivo. This humanized antibody will be useful for the immunoprophylaxis of HBV infection.Entities:
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Year: 2004 PMID： 14972542 DOI： 10.1016/j.virol.2003.09.014
Source DB: PubMed Journal: Virology ISSN： 0042-6822 Impact factor: 3.616