Cited by 586Cancer-related Molecular PathwaysGenetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and Senescence

Modulation of mammalian life span by the short isoform of p53

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Maier, Bernhard, Gluba, Wendy, Bernier, Brian, Turner, Terry, Mohammad, Khalid, Guise, Theresa, Sutherland, Ann, Thorner, Michael +1 more·2004·Genes & Development

Abstract

Overexpression of the short isoform of p53 (p44) has unexpectedly uncovered a role for p53 in the regulation of size and life span in the mouse. Hyperactivation of the insulin-like growth factor (IGF) signaling axis by p44 sets in motion a kinase cascade that clamps potentially unimpeded growth through p21Cip1. This suggests that pathways of gene activity known to regulate longevity in lower organisms are linked in mammals via p53 to mechanisms for controlling cell proliferation. Thus, appropriate expression of the short and long p53 isoforms might maintain a balance between tumor suppression and tissue regeneration, a major requisite for long mammalian life span.

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Crossref · 10.1101/gad.1162404

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  • In mice, chronically active p53 both promotes cellular senescence and accelerates aging phenotypes.

    “Moreover, in mice, chronically active p53 both promotes cellular senescence and accelerates aging phenotypes [ 31 , 32 ].”
  • Cells from these modified mice were more susceptible to both p53-mediated apoptosis and p53-mediated senescence.

    “Cells from these modified mice were more susceptible to both p53-mediated apoptosis (Tyner et al., 2002) and p53-mediated senescence (Maier et al., 2004).”
  • In genetically modified mice, p53 function was enhanced either by low-level expression of an artificially truncated p53 protein or modest overexpression of a naturally occurring short isoform.

    “Evidence for this idea comes from the phenotype of genetically modified mice in which p53 function was enhanced either by low-level expression of an artificially truncated p53 protein (Tyner et al., 2002; Maier et al., 2004) or modest overexpression of a naturally occurring short isoform (Maier et al., 2004).”
  • p53 deficiency attenuates degenerative phenotypes associated with telomere dysfunction, whereas constitutively activated p53 accelerates ageing phenotypes.

    “p53 deficiency markedly attenuates the degenerative phenotypes associated with telomere dysfunction, whereas constitutively activated p53 accelerates ageing phenotypes15-18.”
  • Two mouse strains that express C-terminal p53 fragments along with full-length p53 show accelerated aging phenotypes and a lower incidence of malignancy.

    “However, two mouse strains that express C-terminal p53 fragments along with full-length p53 have been reported to show accelerated aging phenotypes and a lower incidence of malignancy (Maier et al., 2004; Tyner et al., 2002”

    From DNA Repair, Genome Stability, and Aging (2005) · cites this paper as Maier et al., 2004

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Authors
Maier, B., Gluba, W., Bernier, B., Turner, T., Mohammad, K., Guise, T., Sutherland, A., Thorner, M., & Scrable, H.
Affiliations
University of Virginia (US)
Venue
Genes & Development
Published
2004-02-01
Volume
18
Issue
3
Pages
306-319
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2142205521
Cited by
586
References
5
Citations by year
2026: 9 · 2025: 12 · 2024: 14 · 2023: 13 · 2022: 12 · 2021: 15 · 2020: 23 · 2019: 18 · 2018: 22 · 2017: 21 · 2016: 18 · 2015: 21 · 2014: 18 · 2013: 41 · 2012: 30
Type
posted content
Language
en
Open access
Locations
  • Genes & Development (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG020915, AG20915)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK07766, T32DK007766)
  • National Center for Research Resources (R24RR011102, RR11102)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD034807)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
p44, longevity, insulin-like growth factor signaling, p21, cell proliferation, tumor suppression, tissue regeneration
MeSH terms
Aging, Animals, Bone and Bones, Cell Division, Cell Survival, Growth, Longevity, Mice, Transgenic, Somatomedins, Transfection, Signal Transduction, Genes, p53, Tumor Suppressor Protein p53, Protein Isoforms, Mice

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