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17beta-estradiol inhibits forskolin-induced vascular endothelial growth factor promoter in MCF-7 breast adenocarcinoma cells.

Authors
  • Bermont, L
  • Lamielle-Musard, F
  • Chezy, E
  • Weisz, A
  • Adessi, G L
Type
Published Article
Journal
The Journal of Steroid Biochemistry and Molecular Biology
Publisher
Elsevier
Publication Date
Oct 01, 2001
Volume
78
Issue
4
Pages
343–349
Identifiers
PMID: 11717004
Source
Medline
License
Unknown

Abstract

Vascular endothelial growth factor (VEGF) is a potent angiogenic factor whose expression is induced by the cAMP-dependent signalling pathway in several cell types, and by estrogens in some human breast cancer cells. Here, we investigated the cross-talk between estrogens and cAMP/PKA-dependent signalling pathway in human breast cancer MCF-7 cells. The results show that, in the absence of any CRE and ERE, forskolin induces whereas estrogens have no effect on VEGF promoter. Moreover, estrogens, through estrogen receptors, partly inhibit the forskolin-induced VEGF promoter in MCF-7 human breast cancer cells. Therefore, in breast cancers, estrogens could partly inhibit the effect of ligand-activated G protein-coupled receptors on VEGF expression.

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