Cited by 102Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsCancer-related Molecular Pathways

Increased p53 activity does not accelerate telomere‐driven ageing

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García‐Cao, Isabel, García‐Cao, Marta, Tomás‐Loba, Antonia, Martin‐Caballero, Juan, Flores, Juana M, Klatt, Peter, Blasco, María A, Serrano, Manuel·2006·The EMBO Reports

Abstract

There is a great interest in determining the impact of p53 on ageing and, for this, it is important to discriminate among the known causes of ageing. Telomere loss is a well-established source of age-associated damage, which by itself can recapitulate ageing in mouse models. Here, we have used a genetic approach to interrogate whether p53 contributes to the elimination of telomere-damaged cells and its impact on telomere-driven ageing. We have generated compound mice carrying three functional copies of the p53 gene (super-p53) in a telomerase-deficient background and we have measured the presence of chromosomal abnormalities and DNA damage in several tissues. We have found that the in vivo load of telomere-derived chromosomal damage is significantly decreased in super-p53/telomerase-null mice compared with normal-p53/telomerase-null mice. Interestingly, the presence of extra p53 activity neither accelerates nor delays telomere-driven ageing. From these observations, we conclude that p53 has an active role in eliminating telomere-damaged cells, and we exclude the possibility of an age-promoting effect of p53 on telomere-driven ageing.

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  • First generation mice lacking the telomerase RNA component Terc show decreased median and maximum lifespan, and these effects become more pronounced with each subsequent generation.

    “First generation mice lacking the telomerase RNA component Terc show a decrease in both their median and maximum lifespan, and these effects become more pronounced with each subsequent generation 65 .”

    From The common biology of cancer and ageing (2007) · cites this paper as [65]

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Authors
García‐Cao, I., García‐Cao, M., Tomás‐Loba, A., Martin‐Caballero, J., Flores, J. M., Klatt, P., Blasco, M. A., & Serrano, M.
Affiliations
Universidad Complutense de Madrid (ES)
Corresponding author
Serrano, Manuel
Venue
The EMBO Reports
Published
2006-03-31
Volume
7
Issue
5
Pages
546-552
ISSN
  • 1469-221X (ISSN-L)
  • 1469-3178
OpenAlex
W1979784082
Cited by
102
References
41
Citations by year
2025: 1 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 5 · 2016: 5 · 2015: 1 · 2014: 1 · 2013: 4 · 2012: 10
FWCI
8.42
Type
journal article
Language
en
Open access
Locations
  • EMBO Reports (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Hispana (submittedVersion, cc-by)
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
p53, telomere loss, chromosomal damage, DNA damage, p53 overexpression
MeSH terms
Aging, Animals, Kinetics, Mice, Inbred C57BL, Mice, Transgenic, Up-Regulation, Tumor Suppressor Protein p53, Telomere, Mice, Knockout, Gene Dosage, Telomerase, Mice

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