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Jiedu Xiaozheng Yin decoction inhibits hepatoma cell proliferation by inducing apoptosis via the mitochondrial-mediated pathway

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Jiedu Xiaozheng Yin decoction (JXY) is a type of Chinese traditional medicine, which has been used to treat various types of cancer. The present study explored the mechanisms underlying the anticancer activity of JXY. The effects of ethyl acetate extraction of JXY (EEJXY) were evaluated on the HepG2 human hepatoma cell line in vitro and in vivo. Following treatment of the HepG2 cells with EEJXY for 24 h, cell viability, apoptosis, mitochondrial membrane potential, caspase enzyme activity and the expression levels of apoptoticassociated proteins (Bcl2 and Bax) were detected by MTT, flow cytometry, ELISA and western blotting respectively. In addition, HepG2 cells were subcutaneously transplanted into BALB/c nude mice, and the tumor bearing mice were treated with either EEJXY (0.06 g/kg) or normal saline for 21 days. Tumor volume and weight were measured and recorded. The apoptotic index, and the expression levels of Bax and cytochrome c were determined with immunohistochemical staining. Treatment with EEJXY inhibited the proliferation of HepG2 cells, and reduced cell viability in a dose and timedependent manner. Furthermore, EEJXY induced HepG2 cell apoptosis, as demonstrated by a loss of plasma membrane asymmetry and externalization of phosphatidylserine, collapse of mitochondrial membrane potential, activation of caspase9 and caspase3, and an increased ratio of proapoptotic Bax to antiapoptotic Bcl2. Furthermore, EEJXY inhibited tumor growth and increased the apoptotic index of tumors in tumorbearing mice. In conclusion, the results of the present study suggest that JXY inhibits HepG2 cell proliferation through mitochondrionmediated apoptosis, which may partially explain its anticancer activity.
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Document Type: Research Article

Affiliations: Fujian Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350108, P.R. China

Publication date: August 1, 2015

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  • Molecular Medicine Reports is a monthly, peer-reviewed journal available in print and online, that includes studies devoted to molecular medicine, underscoring aspects including pharmacology, pathology, genetics, neurosciences, infectious diseases, molecular cardiology and molecular surgery. In vitro and in vivo studies of experimental model systems pertaining to the mechanisms of a variety of diseases offer researchers the necessary tools and knowledge with which to aid the diagnosis and treatment of human diseases.
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