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Delphinidin Suppresses Angiogenesis via the Inhibition of HIF-1α and STAT3 Expressions in PC3M Cells
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 Title & Authors
Delphinidin Suppresses Angiogenesis via the Inhibition of HIF-1α and STAT3 Expressions in PC3M Cells
Kim, Mun-Hyeon; Kim, Mi-Hyun; Park, Young-Ja; Chang, Young-Chae; Park, Yoon-Yub; Song, Hyun-Ouk;
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 Abstract
Delphinidin is a blue-red pigment and one of the major anthocyanins in plants. It plays an important role in anti-oxidant, anti-inflammatory, anti-mutagenic and anti-cancer properties. In this study, we investigated the inhibitory effects of delphinidin on vascular endothelial growth factor (VEGF) gene expression, an important factor involved in angiogenesis and tumor progression in human prostate cancer. Delphinidin decreased levels of epidermal growth factor (EGF)-induced VEGF mRNA expression in PC-3M cells. The expression of the EGF-induced hypoxia inducible factor- (HIF-) and signaling transducer and activator of transcription 3 (STAT3) proteins, which are the major transcription factors for VEGF, were inhibited by delphinidin. In addition, delphinidin decreases HRE-promoter reporter gene activity, suggesting that delphinidin can suppress the transcription of HIF- under EGF induction, leading to a decrease in the expression of VEGF. Delphinidin specifically suppressed the phosphorylation of Akt, p70S6K, and 4EBP1, but not the phosphorylation of EGFR. Therefore, our results suggest that delphinidin may inhibit human prostate cancer progression and angiogenesis by inhibiting HIF-, STAT3 and VEGF gene expression.
 Keywords
angiogenesis;delphinidin;HIF-;VEGF;STAT3;
 Language
Korean
 Cited by
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