Chimeric human papilloma virus-simian/human immunodeficiency virus virus-like-particle vaccines: immunogenicity and protective efficacy in macaques

Virology. 2002 Sep 15;301(1):176-87. doi: 10.1006/viro.2002.1589.

Abstract

Vaccines to efficiently block or limit sexual transmission of both HIV and human papilloma virus (HPV) are urgently needed. Chimeric virus-like-particle (VLP) vaccines consisting of both multimerized HPV L1 proteins and fragments of SIV gag p27, HIV-1 tat, and HIV-1 rev proteins (HPV-SHIV VLPs) were constructed and administered to macaques both systemically and mucosally. An additional group of macaques first received a priming vaccination with DNA vaccines expressing the same SIV and HIV-1 antigens prior to chimeric HPV-SHIV VLP boosting vaccinations. Although HPV L1 antibodies were induced in all immunized macaques, weak antibody or T cell responses to the chimeric SHIV antigens were detected only in animals receiving the DNA prime/HPV-SHIV VLP boost vaccine regimen. Significant but partial protection from a virulent mucosal SHIV challenge was also detected only in the prime/boosted macaques and not in animals receiving the HPV-SHIV VLP vaccines alone, with three of five prime/boosted animals retaining some CD4+ T cells following challenge. Thus, although some immunogenicity and partial protection was observed in non-human primates receiving both DNA and chimeric HPV-SHIV VLP vaccines, significant improvements in vaccine design are required before we can confidently proceed with this approach to clinical trials.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Antibodies, Viral / biosynthesis
  • Chimera
  • HIV-1 / immunology*
  • Interferon-gamma / biosynthesis
  • Lymphocyte Activation
  • Macaca nemestrina
  • Papillomaviridae / immunology*
  • Papillomavirus Vaccines*
  • Reassortant Viruses / immunology
  • SAIDS Vaccines / immunology*
  • T-Lymphocytes / immunology
  • Vaccination
  • Vaccines, DNA / immunology
  • Vaccines, Synthetic / immunology*
  • Virion / immunology*

Substances

  • Antibodies, Viral
  • Papillomavirus Vaccines
  • SAIDS Vaccines
  • Vaccines, DNA
  • Vaccines, Synthetic
  • Interferon-gamma