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Abstract Title:

EGCG suppresses prostate cancer cell growth modulating acetylation of androgen receptor by anti-histone acetyltransferase activity.

Abstract Source:

Int J Mol Med. 2012 Jul ;30(1):69-74. Epub 2012 Apr 10. PMID: 22505206

Abstract Author(s):

Yoo-Hyun Lee, Jieun Kwak, Hyo-Kyoung Choi, Kyung-Chul Choi, Sunoh Kim, Jeongmin Lee, Woojin Jun, Hyun-Jin Park, Ho-Geun Yoon

Article Affiliation:

Department of Food Science and Nutrition, The University of Suwon, Kyunggi-do, Republic of Korea.

Abstract:

Manipulating acetylation status of key gene targets is likely to be crucial for effective cancer therapy. In this study, we utilized green tea catechins, epicatechin (EC), epigallocatechin (EGC) and epigallocatechin-3-gallate (EGCG) to examine the regulation of androgen receptor acetylation in androgen-dependent prostate cancer cells by histone acetyl-transferase (HAT) activity. EC, EGC and EGCG induced prostate cancer cell death, suppressed agonist-dependent androgen receptor (AR) activation and AR-regulated gene transcription. These results demonstrated a similar tendency to HAT inhibitory activities; EGCG>EGC>EC. The strongest HAT inhibitor among them, EGCG (50µM), downregulated AR acetylation and finally, AR protein translocation to nucleus from the cytoplasmic compartment was effectively inhibited in the presence of the agonist. These results suggest another mechanism to develop effective therapeutics based on green tea catechins.

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Sayer Ji
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