Depletion of CD4 T lymphocytes in human lymphoid tissue infected ex vivo with doxycycline-dependent HIV-1

Virology. 2004 Oct 10;328(1):1-6. doi: 10.1016/j.virol.2004.07.014.

Abstract

We investigated whether CD4+ T cells that do not produce HIV-1 are killed in HIV-infected human lymphoid tissue. Tissue blocks were inoculated with high amount of doxycycline-dependent HIV-rtTA. Doxycycline triggered productive infection and loss of CD4+ T cells in these tissues, whereas without doxycycline, neither productive infection nor CD4+ T cell depletion was detected in spite of the massive presence of virions in the tissue and of viral DNA in the cells. Thus, HIV-1 alone is sufficient to deplete productively infected CD4+ T cells but is not sufficient to cause the death of uninfected or latently infected CD4+ T cells.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents / pharmacology*
  • Cells, Cultured
  • Doxycycline / pharmacology*
  • HIV Infections / immunology
  • HIV Infections / virology
  • HIV-1 / drug effects
  • HIV-1 / pathogenicity*
  • Humans
  • Lymphocyte Depletion*
  • Lymphoid Tissue / drug effects*
  • Lymphoid Tissue / immunology*
  • Lymphoid Tissue / virology
  • Time Factors
  • Virulence / drug effects
  • Virus Latency

Substances

  • Anti-Infective Agents
  • Doxycycline