Evidence map›Paper›PMID 20661471›Full record

ArticlePloS one2010

Co-depletion of cathepsin B and uPAR induces G0/G1 arrest in glioma via FOXO3a mediated p27 upregulation.

Sreelatha Gopinath, Rama Rao Malla, Christopher S Gondi, Kiranmai Alapati, Daniel Fassett, Jeffrey D Klopfenstein, Dzung H Dinh, Meena Gujrati, Jasti S Rao

RetractedOpen access · goldAbstract readRetracted Publication
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 27 citations in OpenAlex.

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  11. Cathepsin B as a cancer target.Expert opinion on therapeutic targets · 2013
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Sreelatha GopinathDepartment of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, Illinois, United States of America.
Rama Rao Malla
Christopher S Gondi
Kiranmai Alapati
Daniel Fassett
Jeffrey D Klopfenstein
Dzung H Dinh
Meena Gujrati
Jasti S Rao
University of Illinois Urbana-Champaign · USIllinois College · US

Funding

Cath B and uPAR si RNA constructs regressed glioma growthR01CA116708 · NCI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI O'BRYAN, JOHN P · 2005 to 2014
$2.9M
NCI NIH HHS CA116708NCI NIH HHS R01 CA116708
6 · The paper itself

Abstract

backgroundCathepsin B and urokinase plasminogen activator receptor (uPAR) are both known to be overexpressed in gliomas. Our previous work and that of others strongly suggest a relationship between the infiltrative phenotype of glioma and the expression of cathepsin B and uPAR. Though their role in migration and adhesion are well studied the effect of these molecules on cell cycle progression has not been thoroughly examined. METHODOLOGY/PRINCIPAL

findingsCathepsin B and uPAR single and bicistronic siRNA plasmids were used to downregulate these molecules in SNB19 and U251 glioma cells. FACS analysis and BrdU incorporation assay demonstrated G0/G1 arrest and decreased proliferation with the treatments, respectively. Immunoblot and immunocyto analysis demonstrated increased expression of p27(Kip1) and its nuclear localization with the knockdown of cathepsin B and uPAR. These effects could be mediated by alphaVbeta3/PI3K/AKT/FOXO pathway as observed by the decreased alphaVbeta3 expression, PI3K and AKT phosphorylation accompanied by elevated FOXO3a levels. These results were further confirmed with the increased expression of p27(Kip1) and FOXO3a when treated with Ly294002 (10 microM) and increased luciferase expression with the siRNA and Ly294002 treatments when the FOXO binding promoter region of p27(Kip1) was used. Our treatment also reduced the expression of cyclin D1, cyclin D2, p-Rb and cyclin E while the expression of Cdk2 was unaffected. Of note, the Cdk2-cyclin E complex formation was reduced significantly. CONCLUSION/SIGNIFICANCE: Our study indicates that cathepsin B and uPAR knockdown induces G0/G1 arrest by modulating the PI3K/AKT signaling pathway and further increases expression of p27(Kip1) accompanied by the binding of FOXO3a to its promoter. Taken together, our findings provide molecular mechanism for the G0/G1 arrest induced by the downregulation of cathepsin B and uPAR in SNB19 and U251 glioma cells.

Indexed as

AnimalsBlotting, WesternCathepsin BCell CycleCell Line, TumorCell ProliferationChromonesCyclin D1Cyclin D2Cyclin-Dependent Kinase Inhibitor p27Cyclin EEnzyme-Linked Immunosorbent AssayFluorescent Antibody TechniqueForkhead Transcription FactorsGliomaHumans2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-oneCathepsin BChromonesCyclin D1Cyclin D2Cyclin-Dependent Kinase Inhibitor p27Cyclin EForkhead Transcription FactorsMorpholinesReceptors, Urokinase Plasminogen ActivatorRNA, Small Interfering

Identifiers

PMID20661471
PMCPMC2908539
OpenAlexW2030179916

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.