Quercetin inhibits the expression and function of the androgen receptor in LNCaP prostate cancer cells.

Abstract:

:The androgen receptor (AR) is involved in the development and progression of prostate cancer. In order to find new compounds that may present novel mechanisms to attenuate the function of AR, we investigated the effect of a natural flavonoid chemical, quercetin, on androgen action in an androgen-responsive LNCaP prostate cancer cell line. Western blot analysis showed that AR protein expression was inhibited by quercetin in a dose-dependent manner. To demonstrate that the repression effects on AR expression can actually reduce its function, we found that quercetin inhibited the secretion of the prostate-specific, androgen-regulated tumor markers, PSA and hK2. The mRNA levels of androgen-regulated genes such as PSA, NKX3.1 as well as ornithine decarboxylase (ODC) were down-regulated by quercetin. Transient transfections further showed that quercetin inhibited AR-mediated PSA expression at the transcription level. Finally, it was demonstrated that quercetin could repress the expression of the AR gene at the transcription level. Our result suggests that quercetin can attenuate the function of AR by repressing its expression and has the potential to become a chemopreventive and/or chemotherapeutic agent for prostate cancer.

journal_name

Carcinogenesis

journal_title

Carcinogenesis

authors

Xing N,Chen Y,Mitchell SH,Young CY

doi

10.1093/carcin/22.3.409

keywords:

subject

Has Abstract

pub_date

2001-03-01 00:00:00

pages

409-14

issue

3

eissn

0143-3334

issn

1460-2180

journal_volume

22

pub_type

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