Evidence map›Paper›PMID 22857708›Full record

ArticleBMC cancer2012

Snail transcription factor negatively regulates maspin tumor suppressor in human prostate cancer cells.

Corey L Neal, Veronica Henderson, Bethany N Smith, Danielle McKeithen, Tisheeka Graham, Baohan T Vo, Valerie A Odero-Marah

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
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  9. Role of EMT in Metastasis and Therapy Resistance.Journal of clinical medicine · 2016
    Review
  10. Article
  11. Article
  12. Article
  13. Epithelial to mesenchymal transition inducing transcription factors and metastatic cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Role of maspin in cancer.Clinical and translational medicine · 2013
    Article
  20. Article
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

7 authors at 3 institutions in 1 country.

Corey L NealCenter for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA 30314, USA.
Veronica Henderson
Bethany N Smith
Danielle McKeithen
Tisheeka Graham
Baohan T Vo
Valerie A Odero-Marah
Center for Cancer Research · USClark Atlanta University · USEmory University · US

Funding

THEORY OF PLANNED BEHAVIOR VS ETHNICITY /PHYSICAL ACTIVIG12RR003062 · NCRR · CLARK ATLANTA UNIVERSITY · PI BROWN, CARLTON B · 1985 to 2011
$15.5M
TRAINNING COREP20MD002285 · NIMHD · CLARK ATLANTA UNIVERSITY · PI CHAUDHARY, JAIDEEP · 2007 to 2016
$10.9M
Technologies/Resources for Core LaboratoriesG12MD007590 · NIMHD · CLARK ATLANTA UNIVERSITY · PI KHAN, SHAFIQ A · 2012 to 2018
$7.6M
NCRR NIH HHS G12RR03062NIMHD NIH HHS 1P20MD002285NIMHD NIH HHS G12 MD007590NIMHD NIH HHS P20 MD002285
6 · The paper itself

Abstract

backgroundMaspin, a putative tumor suppressor that is down-regulated in breast and prostate cancer, has been associated with decreased cell motility. Snail transcription factor is a zinc finger protein that is increased in breast cancer and is associated with increased tumor motility and invasion by induction of epithelial-mesenchymal transition (EMT). We investigated the molecular mechanisms by which Snail increases tumor motility and invasion utilizing prostate cancer cells.

methodsExpression levels were analyzed by RT-PCR and western blot analyses. Cell motility and invasion assays were performed, while Snail regulation and binding to maspin promoter was analyzed by luciferase reporter and chromatin immunoprecipitation (ChIP) assays.

resultsSnail protein expression was higher in different prostate cancer cells lines as compared to normal prostate epithelial cells, which correlated inversely with maspin expression. Snail overexpression in 22Rv1 prostate cancer cells inhibited maspin expression and led to increased migration and invasion. Knockdown of Snail in DU145 and C4-2 cancer cells resulted in up-regulation of maspin expression, concomitant with decreased migration. Transfection of Snail into 22Rv1 or LNCaP cells inhibited maspin promoter activity, while stable knockdown of Snail in C4-2 cells increased promoter activity. ChIP analysis showed that Snail is recruited to the maspin promoter in 22Rv1 cells.

conclusionsOverall, this is the first report showing that Snail can negatively regulate maspin expression by directly repressing maspin promoter activity, leading to increased cell migration and invasion. Therefore, therapeutic targeting of Snail may be useful to re-induce expression of maspin tumor suppressor and prevent prostate cancer tumor progression.

Indexed as

Gene Expression Regulation, NeoplasticCell Line, TumorCell MovementEpithelial CellsGene ExpressionGene SilencingHumansMalePromoter Regions, GeneticProstatic NeoplasmsSerpinsSnail Family Transcription FactorsTranscriptional ActivationTranscription FactorsTumor Suppressor ProteinsSERPIN-B5SerpinsSnail Family Transcription FactorsTranscription FactorsTumor Suppressor Proteins

Identifiers

PMID22857708
PMCPMC3437215
OpenAlexW2092655018

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.