阿魏酸对人胃癌MGC—803细胞增殖的影响?
2016-12-03张艳李海龙王虎平顾静马春林吴红彦
张艳 李海龙 王虎平 顾静 马春林 吴红彦
摘要:目的 观察阿魏酸对人胃癌MGC-803细胞增殖的影响,探讨其诱导胃癌细胞凋亡的作用机制。方法 不同浓度阿魏酸干预体外培养人胃癌MGC-803细胞,作用24、48、72 h后,MTT法检测细胞增殖;不同浓度(0、5、7.5、10 mg/mL)阿魏酸作用MGC-803细胞48 h,Annexin V-FITC/PI法和流式细胞仪检测细胞凋亡,RT-qPCR和Western-blot检测Capase-3、Capase-9、Bax、Bcl-2和Xiap的mRNA和蛋白表达。 结果 与对照组比较,5、7.5、10、12.5 mg/mL阿魏酸作用MGC-803细胞的OD值明显降低,阿魏酸抑瘤作用明显,阿魏酸作用MGC-803细胞24、48、72 h的IC50分别为12.93、9.73、5.52 mg/mL;5、7.5、10 mg/mL阿魏酸作用MGC-803细胞48 h后均能诱导MGC-803细胞凋亡,5、7.5、10 mg/mL阿魏酸均能上调Capase-3、Capase-9和Bax的mRNA和蛋白表达,下调Bcl-2和Xiap的mRNA和蛋白表达。结论 阿魏酸能有效抑制MGC-803细胞增殖,并能诱导MGC-803细胞凋亡,其作用机制与内源性线粒体凋亡途径和下调Xiap的表达有关。
关键词:阿魏酸;胃癌;细胞增殖;细胞凋亡
DOI:10.3969/j.issn.1005-5304.2016.09.017
中图分类号:R285.5 文献标识码:A 文章编号:1005-5304(2016)09-0070-04
Effects of Ferulic Acid on Gastric Cancer Cell Line MGC-803 Proliferation ZHANG Yan1, LI Hai-long2, WANG Hu-ping1,2, GU Jing2, MA Chun-lin1,2, WU Hong-yan1,2 (1. Basic Medical School, Gansu University of Chinese Medicine, Lanzhou 730000, China; 2. Key Laboratory of Traditional Chinese Herbs and Prescription Innovation and Transformation of Gansu Province, Key Laboratory for TCM New Products Development Engineering of Gansu Province, Lanzhou 730000, China)
Abstract: Objective To explore the effects of ferulic acid on gastric cancer cell line MGC-803 proliferation; To discuss the mechanism of apoptosis induced by ferulic acid. Methods Ferulic acid with a variety of concentrations was used to treat gastric cancer cell line MGC-803 for 24, 48, 72 h; MTT experiment was used to detect the growth of gastric cancer cells. After gastric cancer cell line MGC-803 were treated with ferulic acid with a variety of concentrations (0, 5, 7.5, 10 mg/mL) for 48 h, all gastric cancer cells were collected and stained by Annexin V-FITC/PI for the detection of apoptosis by flow cytometry. RT-qPCR and Western-blot methods were used to detect mRNA and protein levels of Caspase-3, Caspase-9, Bax, Bcl-2 and Xiap. Results Compared with the control group, the OD value of cell line MGC-803 treated by ferulic acid with a variety of concentrations (5, 7.5, 10, 12.5 mg/mL) decreased significantly; the anti-tumor effect of ferulic acid was obvious; IC50 of 24, 48, and 72 hours after treated by ferulic acid was 12.93, 9.73 and 5.52 mg/mL respectively. Cell lineMGC-803 treated by ferulic acid with a variety of concentrations (5, 7.5, 10 mg/mL) after 48 h could induce the apoptosis of MGC-803 cells, up-regulate mRNA and protein levels of Caspase-3, Caspase-9, and Bax, down-regulate mRNA and protein levels of Bcl-2 and Xiap. Conclusion Ferulic acid can inhibit the proliferation of MGC-803 cells effectively and induce the apoptosis of MGC-803 cells, which mechanism is related to mitochondria apoptosis pathway and the down-regulation of Xiap expression.
Key words: ferulic acid; gastric cancer; cell proliferation; cell apoptosis
阿魏酸是多种中药如川芎、当归、升麻、木贼、蒲公英、酸枣仁等的有效成分之一,现代药理研究表明,阿魏酸具有抗氧化、抗动脉粥样硬化、抗炎、抗凝、解毒、保肝、调节免疫等功效[1]。近年来研究发现,阿魏酸乙酯可抑制胃癌SGC-7901细胞增殖并且诱导凋亡[2]。然而,阿魏酸是否可抑制胃癌SGC-7901细胞增殖并且诱导凋亡尚不清楚。本实验拟用阿魏酸干预胃癌MGC-803细胞,观察其对胃癌细胞增殖的影响,并探讨其诱导胃癌细胞凋亡的机制。
1 实验材料
1.1 细胞株
胃癌MGC-803细胞,北京协和肿瘤研究所。
1.2 主要试剂与仪器
高糖DMED培养基(健顺生物公司),胎牛血清(杭州四季青公司),阿魏酸(上海紫一试剂厂),反转录试剂……
