Evidence map›Paper›PMID 18006642›Full record

ArticleMolecular endocrinology (Baltimore, Md.)2008

Vascular endothelial growth factor receptor-2 expression is down-regulated by 17beta-estradiol in MCF-7 breast cancer cells by estrogen receptor alpha/Sp proteins.

Kelly J Higgins, Shengxi Liu, Maen Abdelrahim, Kathryn Vanderlaag, Xinyi Liu, Weston Porter, Richard Metz, Stephen Safe

Open access · bronzeAbstract read
In one paragraph

Article in Molecular endocrinology (Baltimore, Md.), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 38 citations in OpenAlex.

  1. Review
  2. VEGFR-Mediated Cytotoxic Activity ofLife (Basel, Switzerland) · 2021
    Article
  3. Article
  4. The Multifaceted Nature of Tumor Microenvironment in Breast Carcinomas.Pathobiology : journal of immunopathology, molecular and cellular biology · 2020
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Significance of estrogen receptor subtypes in breast tumorigenesis and progression.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Angiogenesis and breast cancer.Journal of oncology · 2010
    Article
  16. Article
  17. Article
  18. Article
  19. 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

8 authors at 3 institutions in 1 country.

Kelly J HigginsDepartment of Veterinary Physiology and Pharmacology, Texas A&M University, 4466 TAMU, College Station, TX 77843-4466, USA.
Shengxi Liu
Maen Abdelrahim
Kathryn Vanderlaag
Xinyi Liu
Weston Porter
Richard Metz
Stephen Safe
Texas A&M Health Science Center · USTexas A&M University · USTexas College · US

Funding

WASTE SITE ASSESSMENTP42ES004917 · NIEHS · TEXAS A&M UNIVERSITY SYSTEM · PI SAFE, STEPHEN H. · 1989 to 2009
$10.4M
Coactivation of Estrogen Receptor alpha/Sp1R01CA104116 · NCI · TEXAS A&M UNIVERSITY SYSTEM · PI SAFE, STEPHEN H. · 2004 to 2006
$682k
NCI NIH HHS CA 104116NCI NIH HHS R01 CA104116NIEHS NIH HHS ES 04917NIEHS NIH HHS P42 ES004917
6 · The paper itself

Abstract

17beta-Estradiol (E2) induces and represses gene expression in breast cancer cells; however, the mechanisms of gene repression are not well understood. In this study, we show that E2 decreases vascular endothelial growth factor receptor 2 (VEGFR2) mRNA levels in MCF-7 cells, and this gene was used as a model for investigating pathways associated with E2-dependent gene repression. Deletion analysis of the VEGFR2 promoter indicates that the proximal GC-rich motifs at -58 and -44 are critical for the E2-dependent decreased response in MCF-7 cells. Mutation or deletion of these GC-rich elements results in loss of hormone responsiveness and shows that the -60 to -37 region of the VEGFR2 promoter is critical for both basal and hormone-dependent decreased VEGFR2 expression in MCF-7 cells. Western blot, immunofluorescent staining, RNA interference, and EMSAs support a role for Sp proteins in hormone-dependent down-regulation of VEGFR2 in MCF-7 cells, primarily through estrogen receptor (ER)alpha/Sp1 and ERalpha/Sp3 interactions with the VEGFR2 promoter. Using chromatin immuno-precipitation and transient transfection/RNA interference assays we show that the ERalpha/Sp protein-promoter interactions are accompanied by recruitment of the co-repressors SMRT (silencing mediator of retinoid and thyroid hormone receptor) and NCoR (nuclear receptor corepressor) to the promoter and that SMRT and NCoR knockdown reverse E2-mediated down-regulation of VEGFR2 expression in MCF-7 cells. This study illustrates that both SMRT and NCoR are involved in E2-dependent repression of VEGFR2 in MCF-7 cells.

Indexed as

Blotting, WesternCell Line, TumorChromatin ImmunoprecipitationElectrophoretic Mobility Shift AssayEstradiolEstrogen Receptor alphaFluorescent Antibody TechniqueGene Expression RegulationHumansModels, GeneticPromoter Regions, GeneticProtein BindingReverse Transcriptase Polymerase Chain ReactionRNA, MessengerRNA, Small InterferingSp1 Transcription FactorEstradiolEstrogen Receptor alphaRNA, MessengerRNA, Small InterferingSp1 Transcription FactorSp3 Transcription FactorSp Transcription FactorsVascular Endothelial Growth Factor Receptor-2

Identifiers

PMID18006642
PMCPMC2234589
OpenAlexW1984644637

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.