Evidence map›Paper›PMID 12149641›Full record

ArticleOncogene2002

Re-expression of hSNF5/INI1/BAF47 in pediatric tumor cells leads to G1 arrest associated with induction of p16ink4a and activation of RB.

Bryan L Betz, Matthew W Strobeck, David N Reisman, Erik S Knudsen, Bernard E Weissman

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

113 citing papers in PubMed, 209 citations in OpenAlex.

  1. Article
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  6. Chromatin remodellers as therapeutic targets.Nature reviews. Drug discovery · 2024
    Review
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53 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

5 authors at 2 institutions in 1 country.

Bryan L BetzDepartment of Pathology and Laboratory Medicine and The Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, NC 27599, USA.
Matthew W Strobeck
David N Reisman
Erik S Knudsen
Bernard E Weissman
University of Cincinnati Medical Center · USUniversity of North Carolina at Chapel Hill · US

Funding

CANCER CELL BIOLOGY TRAINING PROGRAMT32CA071341 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI CHANNING J. DER, Yuliya Pylayeva-Gupta · 1996 to 2026
$5.0M
Role of hsnf5/BAF47 Loss in Human Cancer DevelopmentR01CA091048 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI WEISSMAN, BERNARD E. · 2002 to 2012
$2.3M
RB TUMOR SUPPRESSOR--MECHANISMS OF PROLIFERATION CONTROLR01CA082525 · NCI · UNIVERSITY OF CINCINNATI · PI KNUDSEN, ERIK · 1999 to 2003
$1.2M
NCI NIH HHS CA71341NCI NIH HHS CA82525NCI NIH HHS CA91048
6 · The paper itself

Abstract

Truncating mutations and homozygous deletions in the hSNF5/INI1/BAF47 subunit of human SWI/SNF complexes occur in most malignant rhabdoid tumors and some other malignancies. How loss of hSNF5 contributes to tumorigenesis remains unknown. Because the SWI/SNF subunit BRG1 is required for RB-mediated cell cycle arrest, we hypothesized that hSNF5 deficiency disrupts RB signaling. Here we demonstrate that unlike BRG1, hSNF5 deficient cells retain functional RB since ectopic expression of either p16ink4a or a constitutively active form of RB (PSM-RB) led to cell cycle arrest. To determine how hSNF5 loss might contribute to tumorigenesis, we used a retrovirus to introduce hSNF5 into multiple deficient cell lines. In all cases, re-expression inhibited colony formation and induced cell cycle arrest characterized by a flattened morphology. Flow cytometry revealed that these cells accumulated in G0/G1. Importantly, arrested cells exhibited strong induction of p16ink4a, hypophosphorylated RB, and down-regulation of cyclin A, suggesting that hSNF5 signals upstream of RB to induce growth arrest. Co-expression of SV40 T/t abolished hSNF5-induced G1 arrest and activation of RB. Likewise, HPV-16 E7 was sufficient to partially overcome cell cycle arrest. These results suggest that hSNF5 loss is not equivalent to BRG1/BRM loss in human tumor cell lines. Furthermore, hSNF5-induced cell cycle arrest of deficient cells is mediated in part through activation of p16ink4a expression. These findings provide insight into mechanisms of hSNF5-mediated tumor suppression.

Indexed as

BromodeoxyuridineCell CycleChromosomal Proteins, Non-HistoneCyclin ACyclin-Dependent Kinase Inhibitor p16DNA-Binding ProteinsDNA HelicasesFlow CytometryG1 PhaseGene Expression Regulation, NeoplasticHumansHyaluronan ReceptorsInfantNuclear ProteinsRetinal NeoplasmsRetinoblastomaBromodeoxyuridineChromosomal Proteins, Non-HistoneCyclin ACyclin-Dependent Kinase Inhibitor p16DNA-Binding ProteinsDNA HelicasesHyaluronan ReceptorsNuclear ProteinsSMARCA4 protein, humanSMARCB1 ProteinSMARCB1 protein, humanTranscription Factors

Identifiers

PMID12149641
OpenAlexW2031063050

What OpenQuestion holds

Textmetadata
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.