Evidence map›Paper›PMID 22495828›Full record

ArticleMolecular carcinogenesis2013

Knockdown of cathepsin B and uPAR inhibits CD151 and α3β1 integrin-mediated cell adhesion and invasion in glioma.

Rama Rao Malla, Sreelatha Gopinath, Kiranmai Alapati, Bharathi Gorantla, Christopher S Gondi, Jasti S Rao

RetractedOpen access · bronzeAbstract readRetracted Publication
In one paragraph

Article in Molecular carcinogenesis, 2013. 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 It has been retracted, and should not be counted.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 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

20 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. An ATFCancer biology & medicine · 2020
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Role of Aquaporin 1 Signalling in Cancer Development and Progression.International journal of molecular sciences · 2017
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Cathepsin B: multiple roles in cancer.Proteomics. Clinical applications · 2014
    Review
  17. Article
  18. Article
  19. Review
  20. Novel siRNA delivery strategy: a new "strand" in CNS translational medicine?Cellular and molecular life sciences : CMLS · 2014
    Review
4 · The record

Corrections and comments

  • Retraction · 2021-08-26Falsification/Fabrication of Data · Falsification/Fabrication of Image · Investigation by Company/Institution · · Jasti S Rao has institutional finding of misconduct;
  • Retracted
5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Rama Rao MallaDepartment of Cancer Biology and Pharmacology, College of Medicine at Peoria, University of Illinois, Peoria, IL.
Sreelatha Gopinath
Kiranmai Alapati
Bharathi Gorantla
Christopher S Gondi
Jasti S Rao
Illinois CancerCare · USUniversity of Illinois Urbana-Champaign · USIllinois College · USPeoria campus of the University of Illinois System · 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

Glioma is a highly complex brain tumor characterized by the dysregulation of proteins and genes that leads to tumor metastasis. Cathepsin B and uPAR are overexpressed in gliomas and they are postulated to play central roles in glioma metastasis. In this study, efficient downregulation of cathepsin B and uPAR by siRNA treatments significantly reduced glioma cell adhesion to laminin as compared to vitronectin, fibronectin, or collagen I in U251 and 4910 glioma cell lines. Brain glioma tissue array analysis showed high expression of CD151 in clinical samples when compared with normal brain tissue. Cathepsin B and uPAR siRNA treatment led to the downregulation of CD151 and laminin-binding integrins α3 and β1. Co-immunoprecipitation experiments revealed that downregulation of cathepsin B and uPAR decreased the interaction of CD151 with uPAR cathepsin B, and α3β1 integrin. Studies on the downstream signaling cascade of uPAR/CD151/α3β1 integrin have shown that phosphorylation of FAK, SRC, paxillin, and expression of adaptor cytoskeletal proteins talin and vinculin were reduced with knockdown of cathepsin B, uPAR, and CD151. Treatment with the bicistronic construct reduced interactions between uPAR and CD151 as well as lowering α3β1 integrin, talin, and vinculin expression levels in pre-established glioma tumors of nude mice. In conclusion, our results show that downregulation of cathepsin B and uPAR alone and in combination inhibit glioma cell adhesion by downregulating CD151 and its associated signaling molecules in vitro and in vivo. Taken together, the results of the present study show that targeting the uPAR-cathepsin B system has possible therapeutic potential.

Indexed as

Cell AdhesionCell MovementAnimalsApoptosisBlotting, WesternBrain NeoplasmsCathepsin BCell Adhesion MoleculesCell ProliferationDown-RegulationFlow CytometryFluorescent Antibody TechniqueFocal Adhesion Protein-Tyrosine KinasesGliomaHumansImmunoenzyme TechniquesCathepsin BCD151 protein, humanCell Adhesion MoleculesFocal Adhesion Protein-Tyrosine KinasesIntegrin alpha3beta1KalininReceptors, Urokinase Plasminogen ActivatorRNA, Small InterferingTetraspanin 24adhesionCD151integrinlaminin

Identifiers

PMID22495828
PMCPMC3525767
OpenAlexW2029301637

What OpenQuestion holds

Textmetadata
LicenceTDM
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.