Cited by 167T-cell and B-cell ImmunologyGenetics, Aging, and Longevity in Model OrganismsHematopoietic Stem Cell Transplantation

Age-associated increase in lifespan of naive CD4 T cells contributes to T-cell homeostasis but facilitates development of functional defects

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Tsukamoto, Hirotake, Clise-Dwyer, Karen, Huston, Gail E., Duso, Debra K., Buck, Amanda L., Johnson, Lawrence L., Haynes, Laura, Swain, Susan L.·2009·Proceedings of the National Academy of Sciences

Abstract

With age, T-cell generation from the thymus is much reduced, yet a substantial naïve T-cell pool is maintained even in aged animals, suggesting that naïve T cells either persist longer or turn over faster to maintain T-cell homeostasis. We found that with age, naïve CD4 T cells became progressively longer-lived. Their longer lifespan did not depend on recognition of self-peptide/class II. Newly generated naïve T cells derived from aged stem cells had a shorter lifespan, like that of young naïve T cells. Conversely, naïve CD4 T cells derived from middle-aged thymectomized mice were longer-lived in vivo, and their development of functional defects was accelerated. These observations suggest that naïve T cells develop their longer lifespan during their sojourn in the periphery. Increased longevity of naïve CD4 T cells correlated well with reduced expression of proapoptotic molecule Bim. We suggest that the intrinsic increase in longevity helps maintain naïve T-cell homeostasis but facilitates the development of functional defects in mice.

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Crossref · 10.1073/pnas.0910139106

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  • With aging, the naïve subset shrinks and highly differentiated memory cells accumulate, often showing dysregulated properties.

    “With aging, the naïve subset shrinks along with the accumulation of highly differentiated memory cells, which often show dysregulated properties (5, 6).”
  • Age-related functional changes in naive murine T cells are not caused by replication but by cellular longevity, which increases after thymectomy or in aged mice.

    “Age-associated functional changes in naive murine T cells are not a consequence of replication—they at most divide once throughout life—but are a corollary of cellular longevity that even increases after thymectomy or in aged mice”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Tsukamoto et al., 2009

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Authors
Tsukamoto, H., Clise-Dwyer, K., Huston, G. E., Duso, D. K., Buck, A. L., Johnson, L. L., Haynes, L., & Swain, S. L.
Affiliations
Trudeau Institute (US)
Venue
Proceedings of the National Academy of Sciences
Published
2009-10-27
Volume
106
Issue
43
Pages
18333-18338
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2137105060
Cited by
166
References
47
Citations by year
2026: 7 · 2025: 7 · 2024: 4 · 2023: 7 · 2022: 9 · 2021: 21 · 2020: 8 · 2019: 2 · 2018: 7 · 2017: 14 · 2016: 9 · 2015: 15 · 2014: 16 · 2013: 12 · 2012: 11
FWCI
4.03
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (AG021600)
  • National Institute on Aging (P01AG021600, R37AG025805, AG021600, AG025805)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
Keywords
naive CD4+ T cells, T cell lifespan, aging, T cell homeostasis, thymic output, thymectomy, building information modeling, apoptosis, periphery
MeSH terms
Bcl-2-Like Protein 11, Aging, Animals, Cell Survival, Histocompatibility Antigens, Homeostasis, Immunity, Innate, Membrane Proteins, Proto-Oncogene Proteins, Receptors, Antigen, T-Cell, T-Lymphocytes, Thymectomy, Signal Transduction, CD4-Positive T-Lymphocytes, Apoptosis Regulatory Proteins, Mice

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