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Age-related differences in polyfunctional T cell responses
Open accessAbstract
BACKGROUND: A reduced number of naïve T cells along with an accumulation of differentiated cell types in aging have been described but little is known about the polyfunctionality of the T cell responses. In this study we compared the individual and polyfunctional expression of IFN-γ, MIP-1α, TNF-α, perforin, and IL-2 by T cell subsets, including the newly described stem cell like memory T cells (TSCM), in response to stimulation with superantigen staphylococcal enterotoxin B (SEB) in older (median age 80, n = 23) versus younger (median age 27; n = 23) adults. RESULTS: Older age was associated with a markedly lower frequency of CD8+ naïve T cells (11% vs. 47%; p < 0.0001) and an expansion in memory T cell subsets including central memory (p < 0.05), effector memory and effector T cells (p < 0.001 for both). There was also a decline in CD4+ naïve T cells in older subjects (33% vs. 45%; p = 0.02). There were no differences in frequencies or polyfunctional profiles of TSCM between groups. CD8+ naïve cells in the older group had increased expression of all functional parameters measured compared to the younger subjects and exhibited greater polyfunctionality (p = 0.04). CD4+ naïve T cells in the older group also showed greater polyfunctionality with a TNF-α and IL-2 predominance (p = 0.005). CD8+ effector memory and effector T cells exhibited increased polyfunctionality in the older group compared with younger (p = 0.01 and p = 0.003). CONCLUSIONS: These data suggest that aging does not have a negative effect on polyfunctionality and therefore this is likely not a major contributor to the immunesenescence described with aging.
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There is no difference in the frequency of TSCM between young and old groups.
“A study showed that there was no difference in the frequency of TSCM between the young and old groups [105].”
From Immunosenescence: a key player in cancer development (2020) · cites this paper as [105]
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Metadata
- Authors
- Van Epps, P., Banks, R., Aung, H., Betts, M. R., & Canaday, D. H.
- Affiliations
- Louis Stokes Cleveland VA Medical Center (US)
- University of Pennsylvania (US)
- Corresponding author
- Canaday, David H
- Venue
- Immunity & Ageing
- Published
- 2014-10-23
- Volume
- 11
- Issue
- 1
- Pages
- 14-14
- ISSN
- 1742-4933 (ISSN-L)
- PMC
- PMC4265991
- OpenAlex
- W2108412505
- Cited by
- 22
- References
- 27
- Citations by year
- 2026: 2 · 2025: 2 · 2023: 2 · 2021: 1 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 5
- FWCI
- 1.22
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Immunity & Ageing (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
- Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
- Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
- Keywords
- immunosenescence, T cell polyfunctionality, T cell senescence, naive T cells, stem cell-like memory T cells, CD8+ T cells, CD4+ T cells, effector memory T cells, superantigen stimulation, staphylococcal enterotoxin B, interferon-gamma, TNF-α, interleukin-2, perforin, MIP-1α, age-related immune decline
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