Abstract:
:Licochalcone (LA) is a novel estrogenic flavonoid isolated from PC-SPES composition herb licorice root that was reported to show significant antitumor activity in various malignant human cell lines. To better understand its anti-CaP activities, we have investigated LA-elicited growth control and induction of apoptosis using androgen-independent p53-null PC-3 prostate cancer cells. LA induced modest level of apoptosis but had more pronounced effect on cell cycle progression arresting cells in G2/M, accompanied by suppression of cyclin B1 and cdc2. It also inhibited phosphorylation of Rb, specifically phosphorylation of S780 with no change of phosphorylation status of T821, decreased expression of transcription factor E2F concurrent with reduction of cyclin D1, down-regulation of CDKs 4 and 6, but increased cyclin E expression. These findings provide mechanistic explanation for LA activity and suggest that it may be considered as a chemopreventive agent and its anticancer properties should be further explored.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Fu Y,Hsieh TC,Guo J,Kunicki J,Lee MY,Darzynkiewicz Z,Wu JMdoi
10.1016/j.bbrc.2004.07.094subject
Has Abstractpub_date
2004-09-10 00:00:00pages
263-70issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(04)01592-Xjournal_volume
322pub_type
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