Cited by 94Cancer-related Molecular PathwaysDNA Repair MechanismsUbiquitin and proteasome pathways

c-Abl Regulates p53 Levels under Normal and Stress Conditions by Preventing Its Nuclear Export and Ubiquitination

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Vogt Sionov, Ronit, Coen, Sabrina, Goldberg, Zehavit, Berger, Michael, Bercovich, Beatrice, Ben-Neriah, Yinon, Ciechanover, Aaron, Haupt, Ygal·2001·Molecular and Cellular Biology

Abstract

The p53 protein is subject to Mdm2-mediated degradation by the ubiquitin-proteasome pathway. This degradation requires interaction between p53 and Mdm2 and the subsequent ubiquitination and nuclear export of p53. Exposure of cells to DNA damage results in the stabilization of the p53 protein in the nucleus. However, the underlying mechanism of this effect is poorly defined. Here we demonstrate a key role for c-Abl in the nuclear accumulation of endogenous p53 in cells exposed to DNA damage. This effect of c-Abl is achieved by preventing the ubiquitination and nuclear export of p53 by Mdm2, or by human papillomavirus E6. c-Abl null cells fail to accumulate p53 efficiently following DNA damage. Reconstitution of these cells with physiological levels of c-Abl is sufficient to promote the normal response of p53 to DNA damage via nuclear retention. Our results help to explain how p53 is accumulated in the nucleus in response to DNA damage.

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Crossref · 10.1128/mcb.21.17.5869-5878.2001

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Authors
Vogt Sionov, R., Coen, S., Goldberg, Z., Berger, M., Bercovich, B., Ben-Neriah, Y., Ciechanover, A., & Haupt, Y.
Affiliations
  • Lautenberg Center for General and Tumor Immunology, The Hebrew University Hadassah Medical School, Jerusalem 91120
  • Hebrew University of Jerusalem (IL)
  • Technion – Israel Institute of Technology (IL)
Corresponding author
Haupt, Ygal
Venue
Molecular and Cellular Biology
Published
2001-09-01
Volume
21
Issue
17
Pages
5869-5878
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2096008750
Cited by
94
References
52
Citations by year
2024: 3 · 2023: 1 · 2022: 1 · 2020: 2 · 2018: 2 · 2017: 2 · 2016: 7 · 2015: 2 · 2014: 3 · 2013: 4 · 2012: 5
FWCI
3.40
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
c-Abl, p53, MDM2, DNA damage response, p53 stabilization, nuclear export, ubiquitination, ubiquitin-proteasome system, E6 oncoprotein, protein degradation, nuclear retention
MeSH terms
Cell Line, Cell Nucleus, Cytoplasm, DNA Damage, Fibroblasts, HeLa Cells, Humans, Ligases, Nuclear Proteins, Oncogene Proteins, Viral, Proto-Oncogene Proteins, Repressor Proteins, Transcription, Genetic, Ubiquitins, Tumor Suppressor Protein p53, Proto-Oncogene Proteins c-abl, Active Transport, Cell Nucleus, Ubiquitin-Conjugating Enzymes, Ubiquitin-Protein Ligases, Proto-Oncogene Proteins c-mdm2

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