Suppression of Androgen Receptor Signaling and Prostate Specific Antigen Expression by (-)-epigallocatechin-3-gallate in Different Progression Stages of LNCaP Prostate Cancer Cells

Overview

Journal Cancer Lett

Specialty Oncology

Date 2008 Nov 4

PMID 18977589

Citations 40

Authors

Chih-Pin Chuu

Rou-Yu Chen

John M Kokontis

Richard A Hiipakka

Shutsung Liao

Affiliations

Soon will be listed here.

Abstract

The green tea polyphenol, (-)-epigallocatechin-3-gallate (EGCG), inhibits the development and progression of prostate cancer in TRAMP mice and in men. We examined the effects of EGCG on LNCaP human prostate cancer sublines 104-S, 104-R1 and R1Ad representing different progression stages of prostate cancer. EGCG suppressed cell proliferation, prostate specific antigen (PSA) expression, and AR transcriptional activity in the different LNCaP sublines. Intraperitoneal administration of EGCG also suppressed the growth of relapsing R1Ad tumors and decreased tumor-derived serum PSA. Effects of EGCG on tumor PSA expression have the potential to affect accurate monitoring of patient tumor burden by serum PSA measurements.

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