Cited by 457HIV Research and TreatmentTelomeres, Telomerase, and SenescenceT-cell and B-cell Immunology

Shortened telomeres in the expanded CD28-CD8+ cell subset in HIV disease implicate replicative senescence in HIV pathogenesis

Effros, Rita B., Allsopp, Richard, Chiu, Choy-pik, Hausner, Mary Ann, Hirji, Karim, Wang, Lili, Harley, Calvin B., Villeponteau, Bryant +2 more·1996·AIDS

Abstract

OBJECTIVE: To test the hypothesis that the expanded population of non-proliferative CD28-CD8+ T cells in HIV disease have shortened telomeres, thereby providing evidence that increased rounds of CD8+ cell division occur during HIV disease, possibly leading to replicative senescence and exhaustion of CD8+ T-cell responses. DESIGN: CD8+ cells play a central role in control of HIV infection. In late HIV disease, an expanded population of CD28-CD8+ cells with reduced proliferative potential has been documented. A similar population of CD28-CD8+ cells has been identified in ageing humans, where telomere length measurements have suggested that these cells have reached the irreversible state of replicative senescence. METHODS: CD8+ cells from HIV-infected and control subjects were sorted by flow cytometry into CD28+ and CD28- fractions. Telomere lengths were determined as mean terminal restriction fragment (TRF) lengths by Southern hybridization. RESULTS: The TRF lengths of sorted CD28-CD8+ cells in HIV-infected subjects ranged between 5 and 7 kilobases (kb) and were significantly shorter than TRF lengths of CD28-CD8+ cells in uninfected subjects (P = 0.003). The TRF length in CD28-CD8+ cells from HIV-infected subjects was the same as that observed for centenarian peripheral blood mononuclear cells and is compatible with a state of replicative senescence. CONCLUSIONS: The shortened telomeres in the CD28-CD8+ cells in HIV-infected subjects and the poor proliferative potential of these cells identifies CD8+ cell replicative senescence as a newly described feature of HIV disease. Our results provide a mechanism for the loss of CD8+ cell control of viral replication that accompanies advanced HIV disease. Replicative senescence may contribute to exhaustion of the T-cell response as a result of chronic HIV disease. Whether this phenomenon occurs in other chronic viral infections is unknown.

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Crossref · 10.1097/00002030-199607000-00001

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Authors
Effros, R. B., Allsopp, R., Chiu, C.-P., Hausner, M. A., Hirji, K., Wang, L., Harley, C. B., Villeponteau, B., West, M. D., & Giorgi, J. V.
Affiliations
University of California, Los Angeles (US)
Venue
AIDS
Published
1996-07
Volume
10
Issue
8
Pages
F17-22
ISSN
0269-9370 (ISSN-L)
OpenAlex
W1988707875
Cited by
457
References
0
Citations by year
2026: 4 · 2025: 7 · 2024: 4 · 2023: 6 · 2022: 6 · 2021: 15 · 2020: 4 · 2019: 10 · 2018: 13 · 2017: 13 · 2016: 10 · 2015: 15 · 2014: 12 · 2013: 15 · 2012: 19
FWCI
9.74
Type
journal article
Language
en
Open access
closed
Locations
  • AIDS (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ai032883-05)
  • National Institute of Allergy and Infectious Diseases (U01AI035040, AI-32883, AI-28 697, P30AI028697, AI35040)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
telomere shortening, replicative senescence, HIV infection, CD8+ T cell exhaustion, T cell proliferation, chronic viral infection, immunosenescence
MeSH terms
Cell Division, DNA, Humans, Molecular Weight, HIV Infections, T-Lymphocyte Subsets, Telomere, Cellular Senescence, CD28 Antigens, CD8-Positive T-Lymphocytes

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