Cited by 234Cancer-related Molecular PathwaysUbiquitin and proteasome pathwaysHeat shock proteins research

MDMX: from bench to bedside

Open access
Marine, Jean-Christophe W., Dyer, Michael A., Jochemsen, Aart G.·2007·Journal of Cell Science

Abstract

The tumor suppressor protein p53 is negatively regulated by Mdm2, a ubiquitin ligase protein that targets p53 for degradation. Mdmx (also known as Mdm4) is a relative of Mdm2 that was identified on the basis of its ability to physically interact with p53. An increasing body of evidence, including recent genetic studies, suggests that Mdmx also acts as a key negative regulator of p53. Aberrant expression of MDMX could thus contribute to tumor formation. Indeed, MDMX amplification and/or overexpression occurs in several diverse tumors. Strikingly, recent work identifies MDMX as a specific chemotherapeutic target for treatment of retinoblastoma. Specific MDMX antagonists should therefore be developed as a tool to ensure activation of `dormant' p53 activity in tumors that retain wild-type p53.

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Crossref · 10.1242/jcs.03362

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94 of 94 references verified0 citation errors · 0 not checkable

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  • Mdmx is overexpressed in many human malignancies and, together with Mdm2, negatively regulates the p53 tumor suppressor.

    “The oncogene Mdmx is overexpressed in many human malignancies, and together with Mdm2, negatively regulates the p53 tumor suppressor.”
  • Mdmx negatively regulates p53 by inhibiting p53 transcriptional activity rather than by promoting p53 degradation through ubiquitination.

    “While Mdmx negatively regulates p53, it does so through inhibiting p53 transcriptional activity rather than promoting p53 degradation through ubiquitination, as is the case for Mdm2.24,25”
  • Mdmx regulates p53.

    “While it is clear Mdmx regulates p53,25,43”
  • Mdmx can regulate p53 independently of Mdm2.

    “it is known that Mdmx can regulate p53 independent of Mdm2.25,43”
  • During development, p53 is the main cellular target of both Mdm2 and Mdmx.

    “Genetic analyses demonstrate that the major cellular target (at least in development) for both Mdm2 and Mdmx is p53 [49].”

    From The p53 orchestra: Mdm2 and Mdmx set the tone (2010) · cites this paper as [49]

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Authors
Marine, J.-C. W., Dyer, M. A., & Jochemsen, A. G.
Affiliations
  • Vlaams Instituut voor Biotechnologie (BE)
  • St. Jude Children's Research Hospital (US)
  • Leiden University Medical Center (NL)
Corresponding author
Marine, Jean-Christophe W.
Venue
Journal of Cell Science
Published
2007-02-01
Volume
120
Issue
3
Pages
371-378
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2141224144
Cited by
228
References
95
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 8 · 2020: 10 · 2019: 2 · 2018: 8 · 2017: 6 · 2016: 12 · 2015: 10 · 2014: 18 · 2013: 14 · 2012: 21
FWCI
2.78
Type
journal article
Language
en
Open access
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion, other-oa)
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 › Heat shock proteins research
Keywords
MDMX, MDM2, p53, tumor suppressor regulation, ubiquitin ligase, retinoblastoma, chemotherapeutic target, wild-type p53
MeSH terms
Animals, Humans, Models, Biological, Neoplasms, Nuclear Proteins, Proto-Oncogene Proteins, Gene Expression Regulation, Neoplastic, Tumor Suppressor Protein p53, Cell Cycle Proteins

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