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• W2136987307 abstract "Berberine (BBR) has indicated significant antimicrobial activity against a variety of organisms including bacteria, viruses, and fungi. The mechanism by which BBR initiates apoptosis remains poorly understood. In the present study, we demonstrated that BBR exhibited significant cytotoxicity in human hepatoma HepG2 cells. Herein, we investigated cytotoxicity mechanism of BBR in HepG2 cells. The results showed that the induction of apoptosis in HepG2 cells by BBR was characterized by DNA fragmentation, an increased percentage of annexin V, and the activation of caspase-3. The expressions of Bcl-2 protein and pro-caspase-3 were reduced by BBR in HepG2 cells. However, Bax protein was increased in the cells. BBR-induced apoptosis was preceded by increased generation of reactive oxygen species (ROS). NAC treatment, a scavenger of ROS, reversed BBR-induced apoptosis effects via inhibition of Bax activation and Bcl-2 inactivation. BBR-induced, dose-dependent induction of apoptosis was accompanied by sustained phosphorylation of MAP Kinases (JNK and p38 MAPK), ASK1, Akt, and p53. Furthermore, SB203580, p38 inhibitor, reduced the apoptotic effect of BBR, and blocks the generation of ROS and NO as well as activation of Bax. We found that the treatment of HepG2 cells with BBR triggers generation of ROS through Akt phosphorylation, resulting in dissociation of the ASK1-mediated activation of JNK and p38 pathways. J. Cell. Biochem. 109: 329–338, 2010. © 2009 Wiley-Liss, Inc." @default.
• W2136987307 created "2016-06-24" @default.
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• W2136987307 date "2009-01-01" @default.
• W2136987307 modified "2023-10-01" @default.
• W2136987307 title "BBR induces apoptosis in HepG2 cell through an Akt-ASK1-ROS-p38MAPKs-linked cascade" @default.
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• W2136987307 doi "https://doi.org/10.1002/jcb.22384" @default.
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