title: Induction of apoptosis in human breast adenocarcinoma MCF-7 cells by prodelphinidin B-2 3,3'-di-O-gallate from Myrica rubra via Fas-mediated pathway.
abstract: Myrica rubra Sieb et Zucc. (Myricaceae) is well known as a rich source of tannins. Prodelphinidin B-2 3,3'-di-O-gallate (PB233'OG) is a proanthocyanidin gallate that has been reported to exhibit antioxidant and antiviral activity. In this study, we evaluated the anti-proliferative activity of PB233'OG isolated from the bark of M. rubra in human breast adenocarcinoma MCF-7 cells. To identity the anti-cancer mechanism of PB233'OG, we assayed its effect on apoptosis, cell cycle distribution, and levels of p53, p21/WAF1, Fas/APO-1 receptor and Fas ligand. The results showed that PB233'OG induced apoptosis of MCF-7 cells without mediation of p53 and p21/WAF1. We suggest that Fas/Fas ligand apoptotic system is the main pathway of PB233'OG-mediated apoptosis of MCF-7 cells. Our study reports here for the first time that the activity of the Fas/Fas ligand apoptotic system may participate in the anti-proliferative activity of PB233'OG in MCF-7 cells.
authors.affiliation: Department of Biotechnology, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan.
authors.forename: Po-Lin
authors.initials: PL
authors.lastname: Kuo
authors.forename: Ya-Ling
authors.initials: YL
authors.lastname: Hsu
authors.forename: Ta-Chen
authors.initials: TC
authors.lastname: Lin
authors.forename: Liang-Tzung
authors.initials: LT
authors.lastname: Lin
authors.forename: Chun-Ching
authors.initials: CC
authors.lastname: Lin
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000872:Anthocyanins / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001943:Breast Neoplasms / Q000473:pathology*; D002453:Cell Cycle; D053222:Fas Ligand Protein; D005260:Female; D006801:Humans; D008562:Membrane Glycoproteins; D031641:Myrica / Q000737:chemistry*; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology*; D013662:Tea; D014407:Tumor Cells, Cultured; D019014:fas Receptor
chemical_list: D000872:Anthocyanins; C505661:FASLG protein, human; D053222:Fas Ligand Protein; D008562:Membrane Glycoproteins; D010936:Plant Extracts; D013662:Tea; D019014:fas Receptor; C472180:prodelphinidin B-2 3'-O-gallate