Comparative evaluation of simian, simian-human, and human immunodeficiency virus infections in the pigtail macaque (Macaca nemestrina) model.


Journal Article

The global impact of HIV/AIDS intensifies the need for a preventive vaccine and nonhuman primate models can help provide critical insights into effective immunity. Pigtail macaques (Macaca nemestrina) are increasingly studied as a nonhuman primate model for AIDS. We compared the virologic and immunologic characteristics of HIV-1, SIV, and SHIV infection of naive pigtail macaques across a series of preclinical HIV vaccine studies. SIVmac251 and SIVmac239 infection of naive pigtail macaques resulted in a gradual decline in peripheral CD4+ T cells in the setting of high levels of viremia, approximating most closely human infection of HIV-1. In contrast, the CXCR4-utilizing SHIVmn229 virus resulted in rapid depletion of CD4+ T cells and minimal generation of humoral or cellular immune responses, similar to that observed with SHIV89.6P infection of rhesus macaques. Infection with the CCR5-utilizing, rhesus macaque passaged, SHIVSF162P3 resulted in some overall CD4+ T cell decline, however, three of eight macaques naturally control SHIVSF162P3 viremia to very low levels in the setting of robust adaptive immunity. Despite attempts at infecting pigtail macaques with HIV-1 strains passaged in juvenile pigtail macaques in vivo or in PBMC isolated from pigtail macaques in vitro, only lower nonsustained levels of viral replication were observed. Our results provide a series of virologic models with which to evaluate potential AIDS vaccines in pigtail macaques.

Full Text

Duke Authors

Cited Authors

  • Batten, CJ; De Rose, R; Wilson, KM; Agy, MB; Chea, S; Stratov, I; Montefiori, DC; Kent, SJ

Published Date

  • June 2006

Published In

Volume / Issue

  • 22 / 6

Start / End Page

  • 580 - 588

PubMed ID

  • 16796533

Pubmed Central ID

  • 16796533

International Standard Serial Number (ISSN)

  • 0889-2229

Digital Object Identifier (DOI)

  • 10.1089/aid.2006.22.580


  • eng

Conference Location

  • United States