文献类型： 会议论文

第一作者： Yubin JI

作者： Yubin JI ¹ ; Zhongyuan QU ¹ ; Xiang ZOU ² ; Chenfeng JI ² ;

作者机构： 1.Institute of Materia Medica and Postdoctoral Programme Harbin University of Commerce

2.Engineering Reseach Center of Natural Anticancer Drugs Ministry of Education

关键词： Juglone;ROS;Mitochondrial transmembrane potential;Human gastric carcinoma SGC-7901

会议名称： International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2010)

主办单位：

页码： 2114-2117

摘要： To investigate the effects of juglone on ROS production and mitochondrial transmembrane potential (ΔΨ_m in SGC-7901 cells in vitro, further to elucidate the apoptosis mechanism. The apoptosis morphological changes of SGC-7901 cells were observed using fluorescence microscope. The level of ROS and ΔΨ_m of cells were detected by FCM. The change of [Ca~(2+)]_i in cells stained with FIuo-3/AM was observed by LCSM. Hoechst 33258 staining assay showed thick granulated fluorescence in condensed nuclei and cytoplasm, and the number of apoptotic bodies was increased with increasing of juglone concentration. The level of ROS at the dose of 5, 10, 15 and 20μM of juglone was 34.83±1.45%, 42.43±1.36%, 53.73±1.38% and 68.67±1.33%, respectively, which were significantly higher than that in control group (P<0.01). The concentration of Ca~(2+) in cells exposed to juglone for 24 h was increased significantly in a dose dependent manner compared with control group (P<0.01). ΔΨ_m of treatment groups was 85.53±1.82%, 53.57±2.48%, 46.33±1.46%, 36.43±2.64%, respectively, which were significantly lower than that in control group (P<0.01). Therefore, juglone can increase intracellular level of ROS and concentration of Ca~(2+), decrease ΔΨ_m and induce the cells apoptosis.

分类号： G202-53