Induction of the endoplasmic reticulum stress protein GADD153/CHOP by capsaicin in prostate PC-3 cells: a microarray study.

Abstract:

:The effect of capsaicin, main pungent ingredient of hot chilli peppers, in the gene expression profile of human prostate PC-3 cancer cells has been analyzed using a microarray approach. We identified 10 genes that were down-regulated and five genes that were induced upon capsaicin treatment. The data obtained from microarray analysis were then validated using quantitative real-time PCR assays and Western blot analysis. The most remarkable change was the up-regulation of GADD153/CHOP, an endoplasmic reticulum stress-regulated gene. Activation of GADD153/CHOP protein was corroborated by immunofluorescence and Western blot. We then tested the contribution of GADD153/CHOP to protection against capsaicin-induced cell death using RNA interference. Blockage of GADD153/CHOP expression by small interfering RNA, significantly reduced capsaicin-induced cell death in PC-3 cells. Taken together, these results suggested that capsaicin induces the antiproliferative effect through a mechanism facilitated by ER stress in prostate PC-3 cells.

authors

Sánchez AM,Martínez-Botas J,Malagarie-Cazenave S,Olea N,Vara D,Lasunción MA,Díaz-Laviada I

doi

10.1016/j.bbrc.2008.05.138

subject

Has Abstract

pub_date

2008-08-08 00:00:00

pages

785-91

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(08)01047-4

journal_volume

372

pub_type

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