Cited by 143Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsCancer-related Molecular Pathways

Ink4a/Arf links senescence and aging

Sharpless, Norman E.·2004·Experimental Gerontology

Abstract

The mammalian INK4a/ARF locus encodes two linked tumor suppressor proteins, p16INK4a and ARF, which respectively regulate the retinoblastoma (RB) and p53 pathways. Genetic data have firmly established that both proteins possess significant in vivo tumor suppressor activity. In addition to their non-overlapping roles in preventing cancer, one or both proteins are induced under certain circumstances in most cultured murine and human cell types, and thereby are critical effectors of senescence. Likewise, data from murine models have suggested that this anti-cancer growth inhibitory activity of the locus can similarly affect permanent growth arrest in vivo. When such in vivo senescence occurs in a cell possessing self-renewal potential (e.g. a tissue stem cell), there is an attendant decline in the regenerative capabilities of the organ maintained by that stem cell. In turn, the concomitant decline of this stem cell reserve is a cardinal feature of mammalian aging. Expression of the INK4a/ARF locus, therefore, appears not only to be a major suppressor of cancer, but also an effector of mammalian aging.

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Crossref · 10.1016/j.exger.2004.06.025

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Authors
Sharpless, N. E.
Affiliations
University of North Carolina at Chapel Hill (US)
Corresponding author
Sharpless, Norman E.
Venue
Experimental Gerontology
Publisher
Elsevier BV
Published
2004-11
Volume
39
Issue
11-12
Pages
1751-1759
ISSN
0531-5565 (ISSN-L)
OpenAlex
W2091865841
Cited by
142
References
114
Citations by year
2025: 3 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 5 · 2020: 10 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 6 · 2015: 4 · 2014: 5 · 2013: 20 · 2012: 10
FWCI
1.12
Type
journal article
Language
en
Open access
closed
Locations
  • Experimental Gerontology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Sidney Kimmel Foundation for Cancer Research
  • Sidney Kimmel Foundation
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
INK4a/ARF locus, p16INK4a, ARF, cellular senescence, aging, tumor suppression, retinoblastoma pathway, p53 pathway, stem cell self-renewal, tissue regeneration, growth arrest
MeSH terms
Adult, Aged, Aging, Animals, Humans, Mammals, Middle Aged, Stem Cells, Genes, Tumor Suppressor, Tumor Suppressor Protein p53, Retinoblastoma Protein, Cellular Senescence, Cyclin-Dependent Kinase Inhibitor p16

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