Cited by 533Cancer-related Molecular PathwaysDNA Repair MechanismsTelomeres, Telomerase, and Senescence

Distinct p53 Transcriptional Programs Dictate Acute DNA-Damage Responses and Tumor Suppression

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Brady, Colleen A., Jiang, Dadi, Mello, Stephano S., Johnson, Thomas M., Jarvis, Lesley A., Kozak, Margaret M., Broz, Daniela Kenzelmann, Basak, Shashwati +4 more·2011·Cell

Abstract

The molecular basis for p53-mediated tumor suppression remains unclear. Here, to elucidate mechanisms of p53 tumor suppression, we use knockin mice expressing an allelic series of p53 transcriptional activation mutants. Microarray analysis reveals that one mutant, p53(25,26), is severely compromised for transactivation of most p53 target genes, and, moreover, p53(25,26) cannot induce G(1)-arrest or apoptosis in response to acute DNA damage. Surprisingly, p53(25,26) retains robust activity in senescence and tumor suppression, indicating that efficient transactivation of the majority of known p53 targets is dispensable for these pathways. In contrast, the transactivation-dead p53(25,26,53,54) mutant cannot induce senescence or inhibit tumorigenesis, like p53 nullizygosity. Thus, p53 transactivation is essential for tumor suppression but, intriguingly, in association with a small set of novel p53 target genes. Together, our studies distinguish the p53 transcriptional programs involved in acute DNA-damage responses and tumor suppression-a critical goal for designing therapeutics that block p53-dependent side effects of chemotherapy without compromising p53 tumor suppression.

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Crossref · 10.1016/j.cell.2011.03.035

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Authors
Brady, C. A., Jiang, D., Mello, S. S., Johnson, T. M., Jarvis, L. A., Kozak, M. M., Broz, D. K., Basak, S., Park, E. J., McLaughlin, M. E., Karnezis, A. N., & Attardi, L. D.
Affiliations
  • Stanford Medicine (US)
  • Massachusetts Institute of Technology (US)
  • University of California, San Francisco (US)
Corresponding author
Attardi, Laura D.
Venue
Cell
Publisher
Elsevier BV
Published
2011-05
Volume
145
Issue
4
Pages
571-583
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2118833232
Cited by
533
References
61
Citations by year
2026: 12 · 2025: 25 · 2024: 25 · 2023: 30 · 2022: 38 · 2021: 33 · 2020: 32 · 2019: 32 · 2018: 38 · 2017: 40 · 2016: 50 · 2015: 32 · 2014: 46 · 2013: 47 · 2012: 39
FWCI
22.80
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (CA140875, R21CA141087, R01CA140875)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
p53, transcriptional activation, p53 target genes, tumor suppression, DNA damage response, cellular senescence, G1 cell cycle arrest, apoptosis, mutant p53, chemotherapy side effects
MeSH terms
Animals, Cell Cycle, DNA Damage, DNA Repair, Humans, Mutation, Neoplasms, Transcriptional Activation, Tumor Suppressor Protein p53, Cellular Senescence, Apoptosis, Protein Structure, Tertiary, Mice, Gene Knock-In Techniques

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