Cited by 339Genetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and SenescenceT-cell and B-cell Immunology

Aging and Immune Function: Molecular Mechanisms to Interventions

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Ponnappan, Subramaniam, Ponnappan, Usha·2011·Antioxidants & Redox Signaling

Abstract

Abstract The immune system of an organism is an essential component of the defense mechanism aimed at combating pathogenic stress. Age-associated immune dysfunction, also dubbed "immune senescence," manifests as increased susceptibility to infections, increased onset and progression of autoimmune diseases, and onset of neoplasia. Over the years, extensive research has generated consensus in terms of the phenotypic and functional defects within the immune system in various organisms, including humans. Indeed, age-associated alterations such as thymic involution, T cell repertoire skewing, decreased ability to activate naïve T cells and to generate robust memory responses, have been shown to have a causative role in immune decline. Further, understanding the molecular mechanisms underlying the generation of proteotoxic stress, DNA damage response, modulation of ubiquitin proteasome pathway, and regulation of transcription factor NFκB activation, in immune decline, have paved the way to delineating signaling pathways that cross-talk and impact immune senescence. Given the role of the immune system in combating infections, its effectiveness with age may well be a marker of health and a predictor of longevity. It is therefore believed that a better understanding of the mechanisms underlying immune senescence will lead to an effective interventional strategy aimed at improving the health span of individuals. Antioxid. Redox Signal. 14, 1551-1585.

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Crossref · 10.1089/ars.2010.3228

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Authors
Ponnappan, S., & Ponnappan, U.
Affiliations
University of Arkansas for Medical Sciences (US)
Corresponding author
Ponnappan, Usha
Venue
Antioxidants & Redox Signaling
Published
2011-04
Volume
14
Issue
8
Pages
1551-1585
ISSN
  • 1523-0864 (ISSN-L)
  • 1557-7716
OpenAlex
W2016256318
Cited by
339
References
419
Citations by year
2026: 8 · 2025: 32 · 2024: 40 · 2023: 28 · 2022: 27 · 2021: 49 · 2020: 25 · 2019: 22 · 2018: 26 · 2017: 26 · 2016: 16 · 2015: 10 · 2014: 7 · 2013: 13 · 2012: 6
FWCI
0.62
Type
journal article
Language
en
Open access
Locations
  • Antioxidants and Redox Signaling (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (AG-13081, AG030599, R01AG013081, AG025220, R01AG030599, R01AG025220)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
immunosenescence, aging, thymic involution, naive T cell activation, memory T cells, proteotoxic stress, DNA damage response, ubiquitin-proteasome system, NF-κB activation, autoimmune disease, cancer susceptibility, healthspan, longevity
MeSH terms
Aging, Animals, DNA, Humans, Immune System, T-Lymphocytes, NF-kappa B, Telomere, Reactive Oxygen Species, MicroRNAs

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