Cited by 261Ubiquitin and proteasome pathwaysCancer-related Molecular PathwaysHeat shock proteins research

Loss of HAUSP-mediated deubiquitination contributes to DNA damage-induced destabilization of Hdmx and Hdm2.

Open access
Meulmeester, Erik, Maurice, Madelon M., Boutell, Chris, Teunisse, Amina F.A.S., Ovaa, Huib, Abraham, Tsion E., Dirks, Roeland W., Jochemsen, Aart G.·2005·Molecular Cell

Abstract

The p53 tumor suppressor protein has a major role in protecting the integrity of the genome. In unstressed cells, p53 is maintained at low levels by the ubiquitin-proteasome pathway. A balance between ubiquitin ligase activity (Hdm2, COP1, and Pirh2) and the ubiquitin protease activity of the Herpes virus-associated ubiquitin-specific protease (HAUSP) determines the half-life of p53. HAUSP also modulates p53 stability indirectly by deubiquitination and stabilization of Hdm2. The Hdmx protein affects p53 stability as well through its interaction with and regulation of Hdm2. Vice versa, Hdmx is a target for Hdm2-mediated ubiquitination and degradation. Here, we show that HAUSP also interacts with Hdmx, resulting in its direct deubiquitination and stabilization. HAUSP activity is required to maintain normal Hdmx protein levels. Therefore, the balance between HAUSP and Hdm2 activity determines Hdmx protein stability. Importantly, impaired deubiquitination of Hdmx/Hdm2 by HAUSP contributes to the DNA damage-induced degradation of Hdmx and transient instability of Hdm2.

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Crossref · 10.1016/j.molcel.2005.04.024

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  • USP7 deubiquitinates and stabilizes Mdm4 (also known as Mdmx).

    “Furthermore, USP7 deubiquitinates and stabilizes the Mdm2 interacting partner – and substrate (Kawai et al., 2003; Pan and Chen, 2003) – Mdm4 (also known as Mdmx) (Meulmeester et al., 2005).”

    From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Meulmeester et al., 2005

  • Hausp also deubiquitinates Mdm4, another inhibitor of p53 activity.

    “More recent data suggest that Hausp also deubiquitinates Mdm4, another inhibitor of p53 activity (Meulmeester, et al., 2005).”

    From The Mdm network and its regulation of p53 activities: a rheostat of cancer risk (2014) · cites this paper as Meulmeester, et al., 2005

  • HAUSP is a deubiquitylase that binds to and stabilizes Mdm2 and Mdmx preferentially under normal growth conditions.

    “For example, HAUSP is a deubiquitylase (DUB) that binds to and stabilizes Mdm2 and Mdmx preferentially under normal growth conditions [45,46].”

    From The p53 orchestra: Mdm2 and Mdmx set the tone (2010) · cites this paper as [46]

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Authors
Meulmeester, E., Maurice, M. M., Boutell, C., Teunisse, A. F. A. S., Ovaa, H., Abraham, T. E., Dirks, R. W., & Jochemsen, A. G.
Affiliations
  • Leiden University Medical Center (NL)
  • Hubrecht Institute for Developmental Biology and Stem Cell Research (NL)
  • The Netherlands Cancer Institute (NL)
Corresponding author
Jochemsen, Aart G.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2005-05
Volume
18
Issue
5
Pages
565-576
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2057061154
Cited by
260
References
37
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 6 · 2022: 7 · 2021: 3 · 2020: 13 · 2019: 10 · 2018: 5 · 2017: 8 · 2016: 14 · 2015: 12 · 2014: 11 · 2013: 18 · 2012: 18
FWCI
6.78
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
USP7, HDMX, MDM2, p53, deubiquitination, protein stability, DNA damage response, ubiquitin-proteasome system, p53 tumor suppressor, protein degradation, ubiquitin ligase
MeSH terms
Ubiquitin-Specific Peptidase 7, Animals, Carrier Proteins, Cell Line, DNA Damage, Humans, Nuclear Proteins, Endopeptidases, Proto-Oncogene Proteins, Tumor Suppressor Protein p53, Cell Cycle Proteins, Protein Isoforms, Ubiquitin, Ubiquitin Thiolesterase, Intracellular Signaling Peptides and Proteins, Mice, Proto-Oncogene Proteins c-mdm2

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