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.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Sánchez AM,Martínez-Botas J,Malagarie-Cazenave S,Olea N,Vara D,Lasunción MA,Díaz-Laviada Idoi
10.1016/j.bbrc.2008.05.138subject
Has Abstractpub_date
2008-08-08 00:00:00pages
785-91issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(08)01047-4journal_volume
372pub_type
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