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- W1983127951 abstract "Hypoxia-inducible factor-1, an αβ heterodimeric transcription factor, consists of a constitutively expressed HIF-1β subunit and a hypoxia-inducible HIF-1α subunit, and contributes to hypoxia-mediated tumor angiogenesis. Numerous epidemiologic and laboratory studies indicate that green tea has cancer preventive activity which has been attributed to its polyphenol components, the major one being epigallocatechin gallate (EGCG). This study investigated the effect of EGCG on normoxic HIF-1α expression in human prostate cancer cells. Surprisingly, we observed an EGCG-induced-dose-dependent increase in HIF-1-mediated transcription and HIF-1α protein levels under normoxia. However, concomitant treatment of the prostate cancer cells with EGCG and ferrous ions abolished the increase in HIF-1-mediated transcription that was seen with EGCG treatment alone, suggesting that EGCG may act as a ferrous ion chelator. Furthermore, we determined, for the first time, that EGCG inhibits prolyl hydroxylation of HIF-1α, thus preventing HIF-1α and pVHL interaction." @default.
- W1983127951 created "2016-06-24" @default.
- W1983127951 creator A5029645462 @default.
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- W1983127951 date "2005-08-01" @default.
- W1983127951 modified "2023-09-29" @default.
- W1983127951 title "Epigallocatechin gallate inhibits HIF-1α degradation in prostate cancer cells" @default.
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- W1983127951 doi "https://doi.org/10.1016/j.bbrc.2005.06.114" @default.
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