Immunogenicity of a chimeric hepatitis A virus (HAV) carrying the HIV gp41 epitope 2F5

Yuri Y. Kusov*, Natalja A. Zamjatina, Valentina F. Poleschuk, Michail I. Michailov, Graziella Morace, Josef Eberle, Verena Gauss-Müller

*Corresponding author for this work
19 Citations (Scopus)

Abstract

Its stable particle structure combined with its high immunogenicity makes the hepatitis A virus (HAV) a perfect carrier to expose foreign epitopes to the host immune system. In an earlier report [Beneduce, F., Kusov, Y., Klinger, M., Gauss-Müller, V., Morace, G., 2002. Chimeric hepatitis A virus particles presenting a foreign epitope (HIV gp41) at their surface. Antiviral Res. 55, 369-377] chimeric virus-like particles (HAV-gp41) were described that carried at their surface the dominant gp41 epitope 2F5 (2F5e) of the human immunodeficiency virus HIV-1. Extending this work, we now report that chimeric virus HAV-gp41 replicates in HAV-susceptible cells as well as in non-human primates. Infected marmosets developed both an anti-HAV and anti-2F5 epitope immune response. Furthermore, an HIV-neutralizing antibody response was elicited in guinea pigs immunized with HAV-gp41 chimeric particles. The results demonstrate that the replication-competent chimeric HAV-gp41 can serve as either a live or a subunit vaccine for eliciting of antibodies directed against a foreign antigenic epitope.

Original languageEnglish
JournalAntiviral Research
Volume73
Issue number2
Pages (from-to)101-111
Number of pages11
ISSN0166-3542
DOIs
Publication statusPublished - 02.2007

Funding

The authors are thankful to Ms. B. Andresen, Ms. S. Rasi, and Ms. M. Sbattella for excellent technical assistance and to Dr. G. Dzagurov for his help in virus particle preparation. Dr. G. Stiegler provided the monoclonal antibody 2F5 and the synthetic peptide, Dr. Luhm and Ms. Thiessen the INNO-LIA test. The financial support of the Deutsche Forschungsgemeinschaft (Sonderforschungsbereich 367, project B7) is acknowledged.

Research Areas and Centers

  • Academic Focus: Center for Infection and Inflammation Research (ZIEL)

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