Title : Silibinin prevents TPA-induced MMP-9 expression and VEGF secretion by inactivation of the Raf/MEK/ERK pathway in MCF-7 human breast cancer cells.

Pub. Date : 2009 Jun

PMID : 19181503






6 Functional Relationships(s)
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1 Herein, we investigated the effect of silibinin, a major constituent (flavanolignan) of the fruits of Silybum marianum, on 12-O-tetradecanoyl phorbol-13-acetate (TPA)-induced MMP-9 and VEGF expression in MCF-7 human breast cancer cells. Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens
2 The expression of MMP-9 and VEGF in response to TPA was increased, whereas TPA-induced MMP-9 and VEGF expression was decreased by silibinin. Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens
3 The expression of MMP-9 and VEGF in response to TPA was increased, whereas TPA-induced MMP-9 and VEGF expression was decreased by silibinin. Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens
4 To investigate the regulatory mechanism of silibinin on TPA-induced MMP-9 and VEGF expression, we pretreated cells with various inhibitors, such as UO126 (MEK1/2 inhibitor), SP600125 (JNK inhibitor), and SB203580 (p38 inhibitor). Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens
5 TPA-induced VEGF expression was also suppressed by UO126. Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens
6 Taken together, we suggest that the inhibition of TPA-induced MMP-9 and VEGF expression by silibinin is mediated by the suppression of the Raf/MEK/ERK pathway in MCF-7 breast cancer cells. Tetradecanoylphorbol Acetate vascular endothelial growth factor A Homo sapiens