title: Berbamine induces Fas-mediated apoptosis in human hepatocellular carcinoma HepG2 cells and inhibits its tumor growth in nude mice.
abstract: Berbamine, a natural compound from the plant Berberis amurensis, is a traditional Chinese medicine mainly used in stimulating normal hematopoiesis in clinic. Our previous studies demonstrated that berbamine has anti-leukemia activity. In this study, we investigated the anticancer activity of berbamine against human hepatocellular carcinoma (HCC) HepG2 cells in vitro and in vivo. Berbamine treatment decreased the cell growth in a dose-dependent manner with an IC(50) value of 34.5 +/- 0.5 microM. Flow cytometric analysis of apoptosis using Annexin V/propidium iodide staining showed that the percentage of apoptotic cells was increased in a time-dependent manner. Berbamine treatment increased the expression level of Fas and P53, caused depolarization of mitochondrial membrane and decrease of membrane potential, and activated caspase-3, -8, and -9 in HepG2 cells. Berbamine-induced apoptosis could be blocked by the broad caspase inhibitor z-VAD-fmk. HepG2 human HCC xenograft mice treated with berbamine showed a significant reduction in tumor growth rates compared to saline-treated mice. These studies suggest that berbamine exerts anticancer effects on human HCC HepG2 cells in vivo and in vitro, the induction of p53 and the activity of the Fas apoptotic system may participate in the anticancer activity of berbamine in HepG2 cells.
authors.affiliation: Department of Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Guan-Yu
authors.initials: GY
authors.lastname: Wang
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Lv
authors.forename: Qi
authors.initials: Q
authors.lastname: Dong
authors.forename: Rong-Zhen
authors.initials: RZ
authors.lastname: Xu
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Dong
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D044182:Benzylisoquinolines / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology*; D001599:Berberine / Q000737:chemistry; D006690:Bisbenzimidazole / Q000494:pharmacology; D006528:Carcinoma, Hepatocellular / Q000188:drug therapy; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D008516:Medicine, Chinese Traditional; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D010946:Plants, Medicinal / Q000737:chemistry; D013997:Time Factors; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism; D023041:Xenograft Model Antitumor Assays; D019014:fas Receptor / Q000378:metabolism
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D044182:Benzylisoquinolines; D016159:Tumor Suppressor Protein p53; D019014:fas Receptor; D001599:Berberine; D006690:Bisbenzimidazole; C027870:berbamine