Cited by 256Cancer-related Molecular PathwaysGenomics and Chromatin DynamicsDNA Repair Mechanisms

p53 Functions through Stress- and Promoter-Specific Recruitment of Transcription Initiation Components before and after DNA Damage

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Espinosa, Joaquı́n M, Verdun, Ramiro E, Emerson, Beverly M·2003·Molecular Cell

Abstract

The tumor suppressor protein p53 regulates transcriptional programs that control the response to cellular stress. We show that distinct mechanisms exist to activate p53 target genes as revealed by marked differences in affinities and damage-specific recruitment of transcription initiation components. p53 functions in a temporal manner to regulate promoter activity both before and after stress. Before DNA damage, basal levels of p53 are required to assemble a poised RNA polymerase II initiation complex on the p21 promoter. RNA pol II is converted into an elongating form shortly after stress but before p53 stabilization. Proapoptotic promoters, such as Fas/APO1, have low levels of bound RNA pol II but undergo damage-induced activation through efficient reinitiation. Surprisingly, in a p53-dependent process key basal factors TAFII250 and TFIIB assemble into the transcription machinery in a stress- and promoter-specific manner, behaving as differential cofactors for p53 action after distinct types of DNA damage.

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Crossref · 10.1016/s1097-2765(03)00359-9

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  • Target genes were reported to be activated by p53 with varying kinetics through stimulus- and promoter-specific recruitment of transcription initiation components and polymerase II.

    “Target genes were reported to be activated by p53 with varying kinetics through stimulus- and promoter-specific recruitment of transcription initiation components and polymerase II.60, 61, 62, 63”

    From Census and evaluation of p53 target genes (2017) · cites this paper as [60]

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Authors
Espinosa, J. M., Verdun, R. E., & Emerson, B. M.
Affiliations
Salk Institute for Biological Studies (US)
Corresponding author
Emerson, Beverly M
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2003-10
Volume
12
Issue
4
Pages
1015-1027
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2104802032
Cited by
256
References
24
Citations by year
2025: 2 · 2024: 3 · 2023: 8 · 2022: 3 · 2021: 5 · 2020: 10 · 2019: 7 · 2018: 6 · 2017: 13 · 2016: 6 · 2015: 7 · 2014: 12 · 2013: 13 · 2012: 19
FWCI
6.73
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
Keywords
p53, DNA damage response, transcriptional activation, RNA polymerase II, promoter recruitment, p21 promoter, reinitiation, TFIIB, transcriptional cofactors, cellular stress, p53 stabilization
MeSH terms
DNA Damage, Humans, Promoter Regions, Genetic, RNA Polymerase II, Stress, Physiological, Transcriptional Activation, Tumor Suppressor Protein p53, Cyclins, Apoptosis, fas Receptor, Transcription Initiation Site, Transcription Factor TFIID, TATA-Binding Protein Associated Factors, Transcription Factor TFIIB, Cell Line, Tumor, Cyclin-Dependent Kinase Inhibitor p21, Histone Acetyltransferases

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