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Subpopulations of long-lived and short-lived T cells in advanced HIV-1 infection
Marc K. Hellerstein, … , Richard A. Neese, Joseph M. McCune
Marc K. Hellerstein, … , Richard A. Neese, Joseph M. McCune
Published September 15, 2003
Citation Information: J Clin Invest. 2003;112(6):956-966. https://doi.org/10.1172/JCI17533.
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Article Virology

Subpopulations of long-lived and short-lived T cells in advanced HIV-1 infection

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Abstract

Antigenic stimulation of T cells gives rise to short-lived effector cells and long-lived memory cells. We used two stable isotope-labeling techniques to identify kinetically distinct subpopulations of T cells and to determine the effect of advanced infection with HIV-1. Long-term deuterated water (2H2O) incorporation into DNA demonstrated biphasic accrual of total and of memory/effector (m/e)–phenotype but not naive-phenotype T cells, consistent with the presence of short-lived and longer-lived subpopulations within the m/e-phenotype T cell pool. These results were mirrored by biphasic die-away kinetics in m/e- but not naive-phenotype T cells after short-term 2H-glucose labeling. Persistent label retention was observed in a subset of m/e-phenotype T cells (presumably memory T cells), confirming the presence of T cells with very different life spans in humans. In advanced HIV-1 infection, much higher proportions of T cells were short-lived, compared to healthy controls. Effective long-term anti-retroviral therapy restored values to normal. These results provide the first quantitative evidence that long-lived and quiescent T cells do indeed predominate in the T cell pool in humans and determine T cell pool size, as in rodents. The greatest impact of advanced HIV-1 infection is to reduce the generation of long-lived, potential progenitor T cells.

Authors

Marc K. Hellerstein, Rebecca A. Hoh, Mary Beth Hanley, Denise Cesar, Daniel Lee, Richard A. Neese, Joseph M. McCune

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