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Abstract

Progesterone receptor modulator CDB-2914 down-regulates vascular endothelial growth factor, adrenomedullin and their receptors and modulates progesterone receptor content in cultured human uterine leiomyoma cells (PDF) (HTML) 
Xu,Qin; Ohara,Noriyuki; Chen,Wei; Liu,Jin; Sasaki,Hiroko; Morikawa,Akira; Sitruk-Ware,Regine; Johansson,Elof D.B.; Maruo,Takeshi
Human Reproduction 21(9): 2408-2416
Publication date: 2006

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Background
This study was conducted to evaluate the effects of graded concentrations (10, 10 and 10 M) of progesterone receptor (PR) modulator CDB-2914 on the protein contents of PR, of vascular endothelial growth factor (VEGF), adrenomedullin (ADM), and their receptors in cultured human uterine leiomyoma and matching myometrial cells.

Methods
PR-A, PR-B, VEGF-A, VEGF-B, VEGF receptor (VEGFR)-1, VEGFR-2, ADM, and ADM receptor (ADMR) contents were assessed by Western blot analysis.

Results
Treatment with 100 ng/ml progesterone increased VEGF-A, VEGF-B and ADM contents in cultured leiomyoma cells and normal myometrial cells. The concomitant treatment with 10 M CDB-2914 significantly decreased the progesterone-induced VEGF-A, VEGF-B, and ADM contents in cultured leiomyoma cells but not in normal myometrial cells. CDB-2914 treatment alone decreased VEGFR-1, VEGFR-2, and ADMR contents in cultured leiomyoma cells but not in normal myometrial cells. CDB-2914 treatment increased PR-A and decreased PR-B contents in cultured leiomyoma cells in a dose-dependent manner compared with untreated cultures, whereas no significant changes in PR isoform contents were observed in normal myometrial cells.

Conclusions
These results suggest that CDB-2914 down-regulates VEGF, ADM, and their receptor contents and modulates PR isoform contents in cultured leiomyoma cells in a cell-type-specific manner.

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