Cited by 214Cytomegalovirus and herpesvirus researchT-cell and B-cell ImmunologyImmune responses and vaccinations

The Cytomegalovirus-Specific CD4 + T-Cell Response Expands with Age and Markedly Alters the CD4 + T-Cell Repertoire

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Pourgheysari, Batoul, Khan, Naeem, Best, Donna, Bruton, Rachel, Nayak, Laxman, Moss, Paul A. H.·2007·Journal of Virology

Abstract

Immune function in the elderly is associated with a number of phenotypic and functional abnormalities, and this phenomenon of immune senescence is associated with increased susceptibility to infection. The immune response to pathogens frequently declines with age, but the CD8 + T-cell response to cytomegalovirus (CMV) is unusual, as it demonstrates a significant expansion over time. Here we have documented the CD4 + T-cell immune response to CMV in healthy donors of different ages. The magnitude of the CMV-specific CD4 + T-cell immune response increases from a mean of 2.2% of the CD4 + T-cell pool in donors below 50 years of age to 4.7% in donors aged over 65 years. In addition, CMV-specific CD4 + T cells in elderly donors demonstrate decreased production of interleukin-2 and less dependence on costimulation. CMV seropositivity is associated with marked changes in the phenotype of the overall CD4 + T-cell repertoire in healthy aged donors, including an increase in CD57 + expression and a decrease in CD28 and CD27 expression, a phenotypic profile characteristic of immune senescence. This memory inflation of CMV-specific CD4 + T cells contributes to evidence that CMV infection may be damaging to immune function in elderly individuals.

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  • Frequencies of CMV-specific and, to a lesser extent, EBV-specific CD8+ T cells tend to increase with age, protecting older individuals from CMV- and EBV-associated morbidities.

    “frequencies of CMV-specific and to a lesser extent EBV-specific CD8+ T cells tend to increase, successfully protecting aging individuals from CMV- and EBV-associated morbidities”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Pourgheysari et al., 2007

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Authors
Pourgheysari, B., Khan, N., Best, D., Bruton, R., Nayak, L., & Moss, P. A. H.
Affiliations
  • University of Birmingham (GB)
  • University of Liverpool (GB)
  • Department of Applied Gerontology, Selly Oak, Birmingham, United Kingdom
Corresponding author
Moss, Paul A. H.
Venue
Journal of Virology
Published
2007-07-15
Volume
81
Issue
14
Pages
7759-7765
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2115516753
Cited by
214
References
29
Citations by year
2025: 11 · 2024: 7 · 2023: 8 · 2022: 9 · 2021: 12 · 2020: 13 · 2019: 11 · 2018: 10 · 2017: 10 · 2016: 15 · 2015: 12 · 2014: 9 · 2013: 12 · 2012: 13
FWCI
10.78
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
Medical Research Council
Topics
  • Health Sciences › Medicine › Epidemiology › Cytomegalovirus and herpesvirus research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
Keywords
cytomegalovirus, CD4+ T cells, immunosenescence, aging, CMV-specific T-cell responses, interleukin-2, CD57, CD28, CD27, memory inflation, CMV seropositivity, elderly donors
MeSH terms
Aged, Aging, Cytomegalovirus, Humans, Interferon-gamma, Interleukin-2, CD4-Positive T-Lymphocytes

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