Cited by 889T-cell and B-cell ImmunologyHIV Research and TreatmentCancer Immunotherapy and Biomarkers

PD-1 is a regulator of virus-specific CD8+ T cell survival in HIV infection

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Petrovas, Constantinos, Casazza, Joseph P., Brenchley, Jason M., Price, David A., Gostick, Emma, Adams, William C., Precopio, Melissa L., Schacker, Timothy +3 more·2006·The Journal of Experimental Medicine

Abstract

Here, we report on the expression of programmed death (PD)-1 on human virus-specific CD8+ T cells and the effect of manipulating signaling through PD-1 on the survival, proliferation, and cytokine function of these cells. PD-1 expression was found to be low on naive CD8+ T cells and increased on memory CD8+ T cells according to antigen specificity. Memory CD8+ T cells specific for poorly controlled chronic persistent virus (HIV) more frequently expressed PD-1 than memory CD8+ T cells specific for well-controlled persistent virus (cytomegalovirus) or acute (vaccinia) viruses. PD-1 expression was independent of maturational markers on memory CD8+ T cells and was not directly associated with an inability to produce cytokines. Importantly, the level of PD-1 surface expression was the primary determinant of apoptosis sensitivity of virus-specific CD8+ T cells. Manipulation of PD-1 led to changes in the ability of the cells to survive and expand, which, over several days, affected the number of cells expressing cytokines. Therefore, PD-1 is a major regulator of apoptosis that can impact the frequency of antiviral T cells in chronic infections such as HIV, and could be manipulated to improve HIV-specific CD8+ T cell numbers, but possibly not all functions in vivo.

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Crossref · 10.1084/jem.20061496

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  • The view that many late-stage differentiated cells are not dysfunctional or senescent is supported by studies showing that programmed death-1 (PD-1) is expressed on very few CMV-specific cells and at low levels.

    “The view that many of these late-stage differentiated cells are not dysfunctional or senescent is supported by studies showing that the inhibitory molecule programmed death-1 (PD-1) is expressed on very few CMV-specific cells and at low levels (Petrovas et al. 2006; Trautmann et al. 2006).”

    From Is immunosenescence influenced by our lifetime “dose” of exercise? (2016) · cites this paper as Petrovas et al. 2006

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Authors
Petrovas, C., Casazza, J. P., Brenchley, J. M., Price, D. A., Gostick, E., Adams, W. C., Precopio, M. L., Schacker, T., Roederer, M., Douek, D. C., & Koup, R. A.
Affiliations
  • 1Immunology Laboratory
  • 2Human Immunology Section,
  • John Radcliffe Hospital (GB)
  • 3Nuffield Department of Clinical Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
  • University of Minnesota (US)
  • National Institutes of Health (US)
Venue
The Journal of Experimental Medicine
Published
2006-09-05
Volume
203
Issue
10
Pages
2281-2292
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2119146367
Cited by
889
References
48
Citations by year
2026: 13 · 2025: 16 · 2024: 19 · 2023: 18 · 2022: 29 · 2021: 35 · 2020: 45 · 2019: 39 · 2018: 36 · 2017: 33 · 2016: 35 · 2015: 33 · 2014: 44 · 2013: 48 · 2012: 48
FWCI
30.78
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (acceptedVersion)
Funders
National Institute of Allergy and Infectious Diseases (P01AI074340)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
PD-1, HIV infection, CD8+ T cells, virus-specific T cells, T cell survival, apoptosis, memory T cells, cytomegalovirus, vaccinia virus, T cell proliferation, cytokine production, chronic viral infection, antiviral immunity
MeSH terms
Cell Survival, Flow Cytometry, Humans, HIV Infections, Antigens, CD, Apoptosis, CD8-Positive T-Lymphocytes, Apoptosis Regulatory Proteins, Programmed Cell Death 1 Receptor

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