Quantification of latent tissue reservoirs and total body viral load in HIV-1 infection

Tae Wook Chun, Lucy Carruth, Diana Finzi, Xuefei Shen, Joseph A. DiGiuseppe, Harry Taylor, Monika Hermankova, Karen Chadwick, Joseph Margolick, Thomas C. Quinn, Yen Hong Kuo, Ronald Brookmeyer, Martha A. Zeiger, Patricia Barditch-Crovo, Robert F. Siliciano*

*Corresponding author for this work

Research output: Contribution to journalArticle

1522 Scopus citations

Abstract

The capacity of HIV-1 to establish latent infection of CD4 + T cells may allow viral persistence despite immune responses and anti-retroviral therapy. Measurements of infectious virus, and viral RNA in plasma and of infectious virus, viral DNA and viral messenger RNA species in infected cells all suggest that HIV-1 replication continues throughout the course of infection. Uncertainty remains over what fraction of CD4 + T cells are infected and whether there are latent reservoirs for the virus. We show here that during the asymptomatic phase of infection there is an extremely low total body load of latently infected resting CD4 + T cells with replication-competent integrated provirus (<10 7 cells). The most prevalent form of HIV-1 DNA in resting and activated CD4 + T cells is a full-length, linear, unintegrated form that is not replication competent. The infection progresses even though at any given time in the lymphoid tissues integrated HIV-1 DNA is present in only a minute fraction of the susceptible populations, including resting and activated CD4 + T cells and macrophages.

Original languageEnglish (US)
Pages (from-to)183-188
Number of pages6
JournalNature
Volume387
Issue number6629
DOIs
StatePublished - May 8 1997

ASJC Scopus subject areas

  • General

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