Cited by 1,486Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsCancer-related Molecular Pathways

The DOI matches its Crossref record; 64 of the 64 references it cites were found in a registry or an index.

Ink4a/Arf expression is a biomarker of aging

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Abstract

The Ink4a/Arf locus encodes 2 tumor suppressor molecules, p16INK4a and Arf, which are principal mediators of cellular senescence. To study the links between senescence and aging in vivo, we examined Ink4a/Arf expression in rodent models of aging. We show that expression of p16INK4a and Arf markedly increases in almost all rodent tissues with advancing age, while there is little or no change in the expression of other related cell cycle inhibitors. The increase in expression is restricted to well-defined compartments within each organ studied and occurs in both epithelial and stromal cells of diverse lineages. The age-associated increase in expression of p16INK4a and Arf is attenuated in the kidney, ovary, and heart by caloric restriction, and this decrease correlates with diminished expression of an in vivo marker of senescence, as well as decreased pathology of those organs. Last, the age-related increase in Ink4a/Arf expression can be independently attributed to the expression of Ets-1, a known p16INK4a transcriptional activator, as well as unknown Ink4a/Arf coregulatory molecules. These data suggest that expression of the Ink4a/Arf tumor suppressor locus is a robust biomarker, and possible effector, of mammalian aging.

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  1. Nielsen, 1999, Lab Invest., 79, 1137
  2. Kanavaros, 2001, Histol. Histopathol., 16, 1005
  3. Meng, 2003, Cancer Res., 63, 5414
  4. Sherr, 2000, Cancer Res., 60, 3689
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Metadata

Authors
Krishnamurthy, J., Torrice, C., Ramsey, M. R., Kovalev, G. I., Al-Regaiey, K., Su, L., & Sharpless, N. E.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Southern Illinois University Carbondale (US)
  • SIU Medicine (US)
  • UNC Lineberger Comprehensive Cancer Center (US)
Corresponding author
Sharpless, Norman E.
Venue
Journal of Clinical Investigation
Published
2004-11-01
Volume
114
Issue
9
Pages
1299-1307
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2073429636
Cited by
1,486
References
64
Citations by year
2026: 32 · 2025: 51 · 2024: 86 · 2023: 76 · 2022: 75 · 2021: 94 · 2020: 100 · 2019: 91 · 2018: 78 · 2017: 82 · 2016: 80 · 2015: 77 · 2014: 74 · 2013: 76 · 2012: 72
FWCI
19.79
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Sidney Kimmel Foundation for Cancer Research
  • Sidney Kimmel Foundation
  • National Institutes of Health
  • National Institute on Aging (AG 19899, R01AG019899)
  • National Cancer Institute (K08CA090679, CA090679)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › 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, aging biomarkers, caloric restriction, ETS1, transcriptional regulation, tumor suppressor, kidney, ovary, heart, age-related diseases
MeSH terms
Aging, Animals, beta-Galactosidase, Cell Cycle, Disease Models, Animal, Humans, Immunohistochemistry, Models, Biological, Time Factors, Tissue Distribution, Biomarkers, Polymerase Chain Reaction, Cyclin-Dependent Kinase Inhibitor p16, Reverse Transcriptase Polymerase Chain Reaction, ADP-Ribosylation Factor 1, Caloric Restriction, Mice, Rats

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