Cited by 289Cancer-related Molecular PathwaysUbiquitin and proteasome pathwaysTGF-β signaling in diseases

The multiple levels of regulation by p53 ubiquitination

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Lee, J T, Gu, W·2010·Cell Death & Differentiation

Abstract

p53 is a central integrator of a plethora of signals and outputs these signals in the form of tumor suppression. It is well accepted that ubiquitination plays a major part in p53 regulation. Nonetheless, the molecular mechanisms by which p53 activity is controlled by ubiquitination are complex. Mdm2, a RING oncoprotein, was once thought to be the sole E3 ubiquitin ligase for p53, however recent studies have shown that p53 is stabilized but still degraded in the cells of Mdm2-null mice. Although the essential role of Mdm2 in p53 regulation is well established, there are an increasing number of other E3 ligases implicated in Mdm2-independent regulation of p53 by ubiquitination. The different types of ubiquitination on p53 by various E3 ligases have been linked to its differential effects on p53-mediated stress responses. In addition to proteasome-mediated degradation, ubiquitination of p53 acts as signals for degradation-independent functions, such as nuclear export. The function of ubiquitinated p53 varies in the nucleus and cytosol underlying the many potential contributions ubiquitinated p53 may have in promoting cell proliferation or death. Thus, p53 requires multiple layers of regulatory control to ensure correct temporal and spatial functions.

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Crossref · 10.1038/cdd.2009.77

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  • Other ligases are also proposed to target p53 for ubiquitin-dependent proteolysis under certain circumstances.

    “Other ligases are also proposed to target p53 for ubiquitin dependent proteolysis under certain circumstances, as recently reviewed by Lee and Gu [44].”

    From The p53 orchestra: Mdm2 and Mdmx set the tone (2010) · cites this paper as [44]

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Authors
Lee, J. T., & Gu, W.
Affiliations
Columbia University (US)
ORCID
Gu, W
Venue
Cell Death & Differentiation
Published
2009-06-19
Volume
17
Issue
1
Pages
86-92
ISSN
  • 1350-9047 (ISSN-L)
  • 1476-5403
OpenAlex
W2015933637
Cited by
289
References
68
Citations by year
2026: 5 · 2025: 10 · 2024: 19 · 2023: 11 · 2022: 13 · 2021: 14 · 2020: 18 · 2019: 10 · 2018: 13 · 2017: 18 · 2016: 15 · 2015: 24 · 2014: 27 · 2013: 20 · 2012: 26
FWCI
2.10
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Differentiation (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Ellison Medical Foundation
  • Leukemia and Lymphoma Society
  • National Institutes of Health (2r01ca085533-16)
  • National Cancer Institute (R01-CA085533, R01CA131439, P01CA097403, R01CA118561, T32 CA 09503, P01CA080058, R01CA098821, T32CA009503, R01CA129627)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
Keywords
p53, ubiquitination, MDM2, E3 ubiquitin ligase, p53 degradation, proteasomal degradation, nuclear export, stress response, tumor suppression, cell proliferation, cell death
MeSH terms
Ubiquitin-Specific Peptidase 7, Animals, Humans, Tumor Suppressor Protein p53, Apoptosis, Ubiquitin Thiolesterase, Proteasome Endopeptidase Complex, Mice, Proto-Oncogene Proteins c-mdm2, Ubiquitination

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