Bystander CD4+ T lymphocytes survive in HIV-infected human lymphoid tissue

Jean Charles Grivel, Angelique Biancotto, Yoshinori Ito, Rosangela G. Lima, Leonid B. Margolis

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11 Citations (Scopus)


HIV infection is associated with depletion of CD4+ T cells. The mechanisms of this phenomenon remain to be understood. In particular, it remains controversial whether and to what extent uninfected ("bystander") CD4+ T cells die in HIV-infected individuals. We address this question using a system of human lymphoid tissue ex vivo. Tissue blocks were inoculated with HIV-1. After productive infection was established, they were treated with the reverse transcriptase inhibitor nevirapine to protect from infection those CD4+ T cells that had not yet been infected. These CD4+ T cells residing in HIV-infected tissue are by definition bystanders. Our results demonstrate that after nevirapine application the number of bystander CD4+ T cells is conserved. Thus, in the context of HIV-infected human lymphoid tissue, productive HIV infection kills infected cells but is not sufficient to cause the death of a significant number of uninfected CD4+ T cells.

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalAIDS Research and Human Retroviruses
Issue number3
Publication statusPublished - 1 Mar 2003


ASJC Scopus subject areas

  • Immunology
  • Virology
  • Infectious Diseases

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