title: Julibroside J8-induced HeLa cell apoptosis through caspase pathway.
abstract: The julibroside J8 was isolated from the Albizia julibrissin and evaluated for antiproliferatived on six cancer cell lines (BGC-823, Bel-7402, HeLa, PC-3MIE8, MDA-MB-435 and LH-60) in vitro. Julibroside J8 at 100 microg mL- 1 (46.08 micromol.L- 1) significantly inhibited growth in the first three cell lines. In addition, in HeLa cells typical apoptotic changes in morphology were observed, and further, nuclear damage was observed by Giemsa staining and DNA fragmentation was exhibited. Effects of julibrosideJ8 on induction of DNA fragmentation, caspase-3 activation and downregulation of ICAD expression were effectively inhibited by a caspase-3 inhibitor, z-DEVD-fmk. In addition, apoptosis induced with julibroside J8 was associated with an increase in expression of the apoptosis inducer Bax, and a significant reduction in expression of the apoptosis suppressor Bcl-2 in mitochondria. These results suggest that julibroside J8 induces HeLa death through caspase pathway.
authors.affiliation: State Key Laboratory of Natural and Biomimetic, School Pharmaceutical Sciences, Health Science Center, Peking University, Beijing, China.
authors.forename: L
authors.initials: L
authors.lastname: Zheng
authors.forename: J
authors.initials: J
authors.lastname: Zheng
authors.forename: L-J
authors.initials: LJ
authors.lastname: Wu
authors.forename: Y-Y
authors.initials: YY
authors.lastname: Zhao
mesh_terms: D031289:Albizzia; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D017209:Apoptosis / Q000187:drug effects*; D020169:Caspases / Q000378:metabolism; D006367:HeLa Cells / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D008517:Phytotherapy; D024301:Plant Bark; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D011134:Polysaccharides / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D000972:Antineoplastic Agents, Phytogenic; C513093:Julibroside J8; D010936:Plant Extracts; D011134:Polysaccharides; D020169:Caspases