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Inactivation of HAUSP in vivo modulates p53 function.
Open accessAbstract
Hausp is a deubiquitinase that has been shown to regulate the p53-Mdm2 pathway. Cotransfection of p53 and Hausp stabilizes p53 through the removal of ubiquitin moieties from polyubiquitinated p53. Interestingly, knockout or RNA interference-mediated knockdown of Hausp in human cells also resulted in the stabilization of p53 due to the destabilization of Mdm2, suggesting a dynamic role of Hausp in p53 activation. To understand the physiological functions of Hausp, we generated hausp knockout mice. Hausp knockout mice die during early embryonic development between embryonic days E6.5 and E7.5. The hausp knockout embryos showed p53 activation, but no apparent increase in apoptosis. Embryonic lethality was caused by a dramatic reduction in proliferation and termination in development, in part due to p53 activation and/or abrogation of p53-independent functions. Although deletion of p53 did not completely rescue the embryonic lethality of the hausp knockout, embryonic development was extended in both hausp and p53 double knockout embryos. These data show that Hausp has a critical role in regulating the p53-Mdm2 pathway.
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“USP7 is an essential enzyme; its homozygous knockout in mice results is early embryonic lethality (Kon et al., 2010)”
From USP7 Is a Master Regulator of Genome Stability (2020) · cites this paper as Kon et al., 2010
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Metadata
- Authors
- Kon, N., Kobayashi, Y., Li, M., Brooks, C. L., Ludwig, T., & Gu, W.
- Affiliations
- Columbia University (US)
- Venue
- Oncogene
- Published
- 2009-11-30
- Volume
- 29
- Issue
- 9
- Pages
- 1270-1279
- ISSN
- 0950-9232 (ISSN-L)
- 1476-5594
- PMC
- PMC2857765
- OpenAlex
- W2037667982
- Cited by
- 176
- References
- 31
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 8 · 2023: 7 · 2022: 10 · 2021: 12 · 2020: 28 · 2019: 14 · 2018: 15 · 2017: 15 · 2016: 10 · 2015: 10 · 2014: 8 · 2013: 10 · 2012: 8
- FWCI
- 3.99
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Oncogene (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- National Cancer Institute (P01CA097403, 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
- USP7, p53, MDM2, deubiquitinase, p53 stabilization, MDM2-p53 pathway, embryonic lethality, cell proliferation, knockout mice, p53-independent function, apoptosis
- MeSH terms
- Ubiquitin-Specific Peptidase 7, Animals, Female, HeLa Cells, Humans, Substrate Specificity, Genes, p53, Tumor Suppressor Protein p53, Apoptosis, Mice, Knockout, Tumor Suppressor Proteins, Ubiquitin, RNA Interference, RNA, Small Interfering, Ubiquitin Thiolesterase, Ubiquitin-Protein Ligases, Cell Line, Tumor, Mice, Proto-Oncogene Proteins c-mdm2
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