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Kim, S.H. et al.

Se-Ho Kim, Yong Won Shin, Kwang-Won Hong, Ki-Hwan Chang, Kyung-Hwan Ryoo, Sang-Hoon Paik, Jin-Man Kim, Betsy Brotman, Wolfram Pfahler, Alfred M. Prince,

Neutralization of hepatitis B virus (HBV) by human monoclonal antibody against HBV surface antigen (HBsAg) in chimpanzees.

The virus neutralizing efficacy of HB-C7A, a human monoclonal antibody raised against the surface antigen of hepatitis B virus (HBsAg), was proved using hepatitis B virus (HBV)-naïve chimpanzees. One control chimpanzee which received 100CID(50) of HBV, subtype adw, without HB-C7A antibody became infected by HBV as evidenced by the appearance of HBV DNA on week 10 and subsequent appearance of HBsAg, anti-HBc and anti-HBs in the serum. Two experimental chimpanzees were inoculated intravenously with same dose of HBV as the control chimpanzee, which was previously incubated with 0.1mg and 10mg of HB-C7A antibody prior to inoculation. HBV infection was not observed in the antibody-treated chimpanzees during 12 months of follow-up, exhibiting neither detectable HBsAg nor anti-HBc antibody. This work demonstrates the neutralization of HBV by HB-C7A monoclonal antibody and shows the possibility of prevention of HBV infection using this antibody in liver transplantation and exposure to HBV.[1]

References

Neutralization of hepatitis B virus (HBV) by human monoclonal antibody against HBV surface antigen (HBsAg) in chimpanzees. Kim, S.H., Shin, Y.W., Hong, K.W., Chang, K.H., Ryoo, K.H., Paik, S.H., Kim, J.M., Brotman, B., Pfahler, W., Prince, A.M. Antiviral Res. (2008) [Pubmed]

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