Cited by 58Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsT-cell and B-cell Immunology

Kleemeier Award Lecture 2008 – the canary in the coal mine: telomeres and human healthspan

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Effros, R. B.·2009·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

Telomeres, the repeated series of DNA sequences that cap the ends of linear chromosomes, become shorter during cell division and oxidative stress. Shortened telomeres have been documented in a wide variety of pathologies associated with aging and are also predictive of early mortality in the very old. However, telomere shortening--like the canary in the coal mine--is not the cause of the deleterious effects, but rather, the harbinger of increased health risk. Using immune responses to infection as a model system to further analyze the link between telomeres and age-related disease, we have demonstrated that the end-stage T cell with shortened telomeres is reduced in antiviral immune function and secretes large amounts of so-called proinflammatory factors. Our research has documented that maintaining high levels of the telomere-extending enzyme, telomerase, by either genetic manipulation or exposure of T cells to chemical telomerase activators, not only retards telomere loss but also restores a more youthful functional profile to the T cells. These observations suggest possible novel telomerase-based therapeutic approaches to enhancing healthspan in the elderly population.

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Crossref · 10.1093/gerona/glp001

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  • Immune cells that have become senescent due to critical telomere shortening hyper-secrete pro-inflammatory cytokines such as IL-6 and TNF-α, which can lead to a vicious cycle of further inflammation, oxidative stress and telomere shortening.

    “In addition, immune cells that have become senescent due to critical telomere shortening (e.g., CD8+CD28− T lymphocytes) hyper-secrete pro-inflammatory cytokines such as interleukin (IL)-6 and tumor necrosis factor (TNF)-α (Effros, 2009), which can lead to a vicious cycle of further inflammation, oxidative stress and telomere shortening.”

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Authors
Effros, R. B.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Effros, R. B.
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2009-02-19
Volume
64A
Issue
5
Pages
511-515
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2107938016
Cited by
58
References
35
Citations by year
2025: 2 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 5 · 2018: 4 · 2017: 4 · 2016: 4 · 2015: 3 · 2014: 3 · 2013: 3 · 2012: 5
FWCI
0.73
Type
journal article
Language
en
Open access
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • U.S. Public Health Service
  • National Institute on Aging (R01AG023720, AG 023720)
  • National Institute of Allergy and Infectious Diseases (R01AI060362, AI028697, AI 060362, P30AI028697)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
telomeres, healthspan, aging, telomere shortening, telomerase, T cells, inflammatory cytokines, age-related diseases, telomerase activators, oxidative stress
MeSH terms
Aging, Cell Division, Humans, T-Lymphocytes, Telomere

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