异甘草素诱导人黑色素瘤A375细胞凋亡研究  

Isoliquiritigenin induced apoptosis in human melanoma A375 cells

作　　者：阎新燕 司玲玲[1] 高彩霞[2] 于丽娜[2] 王艳明[1] 郑秋生[1,2] 

机构地区：[1]石河子大学药学院新疆特种植物药资源教育部重点实验室,新疆石河子832002 [2]滨州医学院,山东烟台264005

出　　处：《中国药理学通报》2015年第10期1426-1432,共7页Chinese Pharmacological Bulletin

基　　金：国家自然科学基金资助项目(No 31471338);科技部科技型中小企业创业投资引导基金(No 13C26216516410);兵团重点领域创新团队资助项目(2015BD005)

摘　　要：目的研究异甘草素诱导人黑色素瘤(A375)细胞凋亡及其初步机制。方法采用硫氰酸盐B(SRB)法测定异甘草素对A375细胞生长的抑制效应,AO/EB和Hoechst33258荧光染色法观察细胞凋亡形态,流式细胞技术检测A375细胞凋亡率;荧光染料二乙酸-2’,7’-二氯荧光素(DCFH-DA)测定A375细胞内活性氧的变化。5,5',6,6'-四氯-1,1',3,3'-四乙基苯并咪唑羰花青碘化物(JC-1)测定线粒体膜电势的变化,利用试剂盒检测异甘草素处理后的A375细胞内ATP和培养液中的乳酸、葡萄糖含量。结果异甘草素能抑制A375细胞的增殖,并呈浓度依赖性;在荧光显微镜下发现,异甘草素处理后的A375细胞出现明显的凋亡形态;细胞凋亡率随异甘草素浓度的增加而升高;异甘草素处理后的细胞内活性氧有明显上升趋势,细胞线粒体膜电位明显下降;异甘草素作用后胞内ATP含量下降(P<0.05或P<0.01),培养液中的乳酸含量下降,葡萄糖含量上升(P<0.05或P<0.01)。结论异甘草素能够抑制A375细胞的恶性增殖,最终诱导细胞凋亡。推测异甘草素通过活性氧升高,引起线粒体膜电势下降,从而影响A375细胞的糖酵解途径而导致细胞凋亡。Aim To evaluate the mechanism of apopto-sis induced by the isoliquiritigenin in A375 human ma-lignant melanoma cells. Methods Sulforhodamine B ( SRB) method was used to determine the A375 cell viability;acridine orange/ethidium bromide ( AO/EB) and Hoechst 33258 staining were used to observe the morphological changes of apoptotic cells; flow cytome-try was used to detect A375 cell apoptotic rate;DCFH-DA was applied to determine the changes of total intra-cellular ROS in A375 cells;JC-1 method was used to measure the changes of mitochondrial membrane poten-tial;the kits methods were used to determine the con-tent of ATP, lactic acid and glucose in A375 cell which was treated with different concentrations of isoliquiritigenin. Results Isoliquiritigenin could in-hibit A375 cell proliferation in a concentration-depend-ent manner; A375 cells showed obvious apoptosis&nbsp;charateristics after treatment by isoliquiritigenin, and the apoptosis rate increased with increasing concentra-tion of isoliquiritigenin. The level of total intracellular ROS in A375 cells increased obviously after dealing with different concentrations of isoliquiritigenin;in ad-dition, the mitochondrial membrane potential, the lev-els of intracellular ATP,lactic acid and the level of glu-cose uptake all declined. Conclusions These find-ings demonstrate that isoliquiritigenin can induce apop-tosis of A375 cells. The mechanism may be related to elevation of ROS level and reduction of aerobic glycoly-sis level.

关 键 词：异甘草素 人黑色素瘤细胞 细胞凋亡 凋亡形态 活性氧 线粒体膜电位 糖酵解 

分 类 号：R284.1[医药卫生—中药学] R329.25[医药卫生—中医学]