Xu Bin, Li Minpeng, Yu Yuan, He Jun, Hu Siqin, Pan Meng, Lu Shifeng, Liao Ke, Pan Zhuang, Zhou Yanxun, Zhu Jiye
Department of Liver Surgery, The First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi 530023, P.R. China.
Oncol Lett. 2018 Feb;15(2):1931-1936. doi: 10.3892/ol.2017.7495. Epub 2017 Nov 28.
The effects of harmaline on the viability and apoptosis of human liver carcinoma were investigated . HepG2 cells were treated with harmaline (0-10 µM), and the proliferation and apoptosis of HepG2 cells were investigated using an MTT assay and flow cytometry, respectively. The protein expression of cellular tumor antigen p53 (p53), cyclin-dependent kinase inhibitor 1 (p21), tumor necrosis factor receptor superfamily member 6 (Fas), Fas ligand (FasL) and caspase-8 was subsequently measured using western blotting. In addition, an ELISA was used to analyze caspase-8/3 activity. Harmaline significantly increased p53, p21, Fas and FasL protein expression in HepG2 cells. Additionally, treatment with harmaline significantly increased the expression of caspase-8 and caspase-8/3 activity. The results from the present study suggest that harmaline suppresses the viability, but induces the apoptosis, of human liver carcinoma cells through upregulation of the p53/p21 and Fas/FasL signaling pathways.
研究了骆驼蓬碱对人肝癌细胞活力和凋亡的影响。用骆驼蓬碱(0 - 10 µM)处理HepG2细胞,分别采用MTT法和流式细胞术检测HepG2细胞的增殖和凋亡情况。随后用蛋白质印迹法检测细胞肿瘤抗原p53(p53)、细胞周期蛋白依赖性激酶抑制剂1(p21)、肿瘤坏死因子受体超家族成员6(Fas)、Fas配体(FasL)和半胱天冬酶-8的蛋白表达。此外,采用酶联免疫吸附测定法分析半胱天冬酶-8/3活性。骆驼蓬碱显著增加了HepG2细胞中p53、p21、Fas和FasL的蛋白表达。此外,骆驼蓬碱处理显著增加了半胱天冬酶-8的表达和半胱天冬酶-8/3活性。本研究结果表明,骆驼蓬碱通过上调p53/p21和Fas/FasL信号通路抑制人肝癌细胞的活力,但诱导其凋亡。