Abstract
Monoclonal antibodies generated against varicella-zoster virus (VZV) glycoprotein I (gpI) also recognize VZV gpIV (A. Vafai, Z. Wroblewska, R. Mahalingam, G. Cabirac, M. Wellish, M. Cisco, and D. Gilden, J. Virol. 62:2544-2551, 1988). To determine whether the virus-neutralizing activity of these antibodies belongs to gpI, gpIV, or both, the open reading frame encoding gpIV was inserted into the vaccinia virus genome. Immunoprecipitation of recombinant vaccinia virus-infected cells with anti-gpIV monoclonal antibody yielded synthesis and processing of gpIV similar to those expressed in VZV-infected cells. Antibodies raised against VVgpIV in a rabbit recognized both native gpI and gpIV and neutralized VZV infectivity. In addition, antibodies raised against recombinant vaccinia virus carrying VZV gpI neutralized VZV infection. These results indicate a structural relationship between VZV gpI and gpIV and show that gpI and gpIV each induce virus-neutralizing antibody.
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