Effective downregulation of HLA-A*2 and HLA-B*57 by primary human immunodeficiency virus type 1 isolates cultured from elite suppressors

J Virol. 2009 Jul;83(13):6941-6. doi: 10.1128/JVI.00306-09. Epub 2009 Apr 22.

Abstract

Elite controllers or suppressors (ES) are human immunodeficiency virus type 1 (HIV-1)-infected patients who control viral replication to <50 copies/ml without antiretroviral therapy. Downregulation of HLA class I molecules is an important mechanism used by HIV-1 to evade the immune system. In this study, we showed that primary isolates from ES are as effective as isolates obtained from patients with progressive HIV-1 disease at downregulating HLA-A*2 and HLA-B*57 molecules on primary CD4(+) T cells. Thus, a diminished ability of viral isolates from ES to evade HIV-specific immune responses probably does not contribute to the control of viral replication in these patients.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • CD4-Positive T-Lymphocytes / immunology*
  • CD4-Positive T-Lymphocytes / virology
  • Cells, Cultured
  • Down-Regulation
  • HIV Infections / immunology*
  • HIV Long-Term Survivors
  • HIV-1 / immunology
  • HLA-A2 Antigen / genetics
  • HLA-A2 Antigen / immunology*
  • HLA-B Antigens / genetics
  • HLA-B Antigens / immunology*
  • Humans

Substances

  • HLA-A2 Antigen
  • HLA-B Antigens
  • HLA-B57 antigen