Cinobufacini,an aqueous extract from Bufo bufo gargarizans Cantor,induces apoptosis through a mitochondria-mediated pathway in human hepatocellular carcinoma cells |
| |
Authors: | Fanghua Qi Anyuan Li Lin Zhao Huanli Xu Yoshinori Inagaki Dongliang Wang Xiaoyan Cui Bo Gao Norihiro Kokudo Munehiro Nakata Wei Tang |
| |
Institution: | 1. Department of Traditional Chinese Medicine, Provincial Hospital affiliated with Shandong University, Jinan 250021, China;2. Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Tokyo 113-8655, Japan;3. Anhui Jinchan Biochemical Co., Ltd, Huaibei 235000, China;4. Department of Applied Biochemistry, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan |
| |
Abstract: | Aim of the studyCinobufacini (Huachansu), an aqueous extract from the skin and parotid venom glands of Bufo bufo gargarizans Cantor, is a traditional Chinese medicine widely used in clinical cancer therapy in China. The present study sought to investigate the possible signaling pathway implicated in cinobufacini-induced apoptosis in the hepatocellular carcinoma cell lines HepG2 and Bel-7402.Materials and methodsThe effects of cinobufacini on cell proliferation of HepG2 and Bel-7402 cells were evaluated by 3-4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assays. Cell apoptosis was detected by Hoechst 33258 staining and flow cytometry analysis. The mitochondrial membrane potential (Δψm) and caspase-9 and -3 activity were detected using MitoCapture reagent staining and colorimetric assays, respectively. The expression of apoptosis-related proteins and release of cytochrome c were assessed by Western blot analysis.ResultsCinobufacini significantly inhibited cell proliferation of both cell lines in a dose- and time-dependent manner. Marked changes in apoptotic morphology and apoptosis rates were clearly observed after cinobufacini treatment. The protein expression of Bax increased whereas that of Bcl-2 decreased, leading to an increase in the Bax/Bcl-2 ratio. Subsequently, cinobufacini disrupted the mitochondrial membrane potential (Δψm) and resulted in the release of cytochrome c, activation of both caspase-9 and -3, and cleavage of poly (ADP-ribose) polymerase (PARP).ConclusionThe present study indicated that cinobufacini can induce apoptosis of HepG2 and Bel-7402 cells through a mitochondria-mediated apoptosis pathway. |
| |
Keywords: | DMEM Dulbecco's modified Eagle's medium DMSO dimethyl sulfoxide HCC hepatocellular carcinoma HRP horseradish peroxidase MTT 3-[4 5-dimethylthiazol-2-yl]-2 5-diphenyl-tetrazolium bromide ODs optical densities PBS phosphate buffered saline PARP poly (ADP-ribose) polymerase Δψm mitochondrial membrane potential |
本文献已被 ScienceDirect 等数据库收录! |
|