Evidence map›Paper›PMID 19773755›Full record

ArticleBritish journal of cancer2009

Mutant p53 mediates survival of breast cancer cells.

L Y Lim, N Vidnovic, L W Ellisen, C-O Leong

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed
3.2field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

106 citing papers in PubMed, 177 citations in OpenAlex.

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  20. New 2-[(4-Amino-6-International journal of molecular sciences · 2022
    Article

46 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

L Y LimInternational Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia.
N Vidnovic
L W Ellisen
C-O Leong
Harvard University · USInternational Medical University · MY

Funding

ACL HHS 90SF0010
6 · The paper itself

Abstract

backgroundp53 is the most commonly mutated tumour-suppressor gene in human cancers. Unlike other tumour-suppressor genes, most p53 cancer mutations are missense mutations within the core domain, leading to the expression of a full-length mutant p53 protein. Accumulating evidence has indicated that p53 cancer mutants not only lose tumour suppression activity but also gain new oncogenic activities to promote tumourigenesis.

methodsThe endogenous mutant p53 function in human breast cancer cells was studied using RNA interference (RNAi). Gene knockdown was confirmed by quantitative PCR and western blotting. Apoptosis was evaluated by morphological changes of cells, their PARP cleavage and annexin V staining.

resultsWe show that cancer-associated p53 missense mutants are required for the survival of breast cancer cells. Inhibition of endogenous mutant p53 by RNAi led to massive apoptosis in two mutant p53-expressing cell lines, T47D and MDA-MB-468, but not in the wild-type p53-expressing cells, MCF-7 and MCF-10A. Reconstitution of an RNAi-insensitive mutant p53 in MDA-MB-468 cells completely abolished the apoptotic effects after silencing of endogenous mutant p53, suggesting the specific survival effects of mutant p53. The apoptotic effect induced by mutant p53 ablation, however, is independent of p63 or p73 function.

conclusionThese findings provide clear evidence of a pro-survival 'gain-of-function' property of a subset of p53 cancer mutants in breast cancer cells.

Indexed as

Mutation, MissenseApoptosisBreast NeoplasmsCell Line, TumorCell SurvivalDNA-Binding ProteinsFemaleHumansNuclear ProteinsTrans-ActivatorsTranscription FactorsTumor Protein p73Tumor Suppressor Protein p53Tumor Suppressor ProteinsDNA-Binding ProteinsNuclear ProteinsTP63 protein, humanTP73 protein, humanTrans-ActivatorsTranscription FactorsTumor Protein p73Tumor Suppressor Protein p53Tumor Suppressor Proteins

Identifiers

PMID19773755
PMCPMC2778523
OpenAlexW2060798006

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.