Cited by 169Cancer-related Molecular PathwaysUbiquitin and proteasome pathwaysHeat shock proteins research

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Different effects of p14ARF on the levels of ubiquitinated p53 and Mdm2 in vivo

Abstract

Mdm2 has been shown to promote its own ubiquitination and the ubiquitination of the p53 tumour suppressor by virtue of its E3 ubiquitin ligase activity. This modification targets Mdm2 and p53 for degradation by the proteasome. The p14ARF tumour suppressor has been shown to inhibit degradation of p53 mediated by Mdm2. Several models have been proposed to explain this effect of p14ARF. Here we have compared the effects of p14ARF overexpression on the in vivo ubiquitination of p53 and Mdm2. We report that the inhibition of the Mdm2-mediated degradation of p53 by p14ARF is associated with a decrease in the proportion of ubiquitinated p53. The levels of polyubiquitinated p53 decreased preferentially compared to monoubiquitinated species. p14ARF overexpression increased the levels of Mdm2 but it did not reduce the overall levels of ubiquitinated Mdm2 in vivo. This is unexpected because p14ARF has been reported to inhibit the ubiquitination of Mdm2 in vitro. In addition we show that like p14ARF, the proteasome inhibitor MG132 can promote the accumulation of Mdm2 in the nucleolus and that this can occur in the absence of p14ARF expression. We also show that the mutation of the nucleolar localization signal of Mdm2 does not impair the overall ubiquitination of Mdm2 but is necessary for the effective polyubiquitination of p53. These studies reveal important differences in the regulation of the stability of p53 and of Mdm2.

Overview

Integrity signals

Registry

Crossref · 10.1038/sj.onc.1204656

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Verification

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Citations

Cites

Show all 37 references

Research works printed but not linked: 1

  1. Chen J, Marechal V, Levine AJ . 1993 Mol. Cell Biol. 13: 4107–4114 · DOI

Cited by

Sorted by citations

Items 101–168 of 168

Metadata

Authors
Xirodimas, D., Saville, M. K., Edling, C., Lane, D. P., & Laín, S.
Affiliations
University of Dundee (GB)
Venue
Oncogene
Published
2001-08-16
Volume
20
Issue
36
Pages
4972-4983
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2050259175
Cited by
169
References
37
Citations by year
2024: 2 · 2023: 1 · 2021: 4 · 2020: 2 · 2019: 6 · 2018: 6 · 2017: 5 · 2016: 3 · 2015: 5 · 2014: 6 · 2013: 6 · 2012: 9
FWCI
5.55
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • Discovery Research Portal (University of Dundee) (publishedVersion)
  • HAL (submittedVersion)
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
p14ARF, p53, MDM2, ubiquitination, polyubiquitination, monoubiquitination, proteasomal degradation, E3 ubiquitin ligase, protein stability, nucleolar localization signal, MG132, tumor suppressor regulation
MeSH terms
Animals, Cell Line, Cell Nucleolus, Cysteine Endopeptidases, Leupeptins, Multienzyme Complexes, Nuclear Proteins, Proteins, Proto-Oncogene Proteins, Transfection, Ubiquitins, Cysteine Proteinase Inhibitors, Tumor Suppressor Protein p53, Tumor Suppressor Protein p14ARF, Proteasome Endopeptidase Complex, Proto-Oncogene Proteins c-mdm2

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review