白细胞介素-1β引起胶质瘤细胞U251中蛋白聚集体形成、活性氧含量和线粒体膜电位增高

被引:4
作者
马国诏
陈生弟
陆国强
汪锡金
杨卉
机构
[1] 上海第二医科大学附属瑞金医院神经内科,上海第二医科大学附属瑞金医院神经内科,上海第二医科大学附属瑞金医院神经内科,上海第二医科大学附属瑞金医院神经内科,上海第二医科大学附属瑞金医院神经内科,,,,
关键词
白细胞介素1; 神经胶质瘤; 线粒体; 膜电位; 活性氧;
D O I
暂无
中图分类号
R749.16 [];
学科分类号
100203 ;
摘要
目的 探讨白细胞介素 1β (IL 1β)是否引起细胞内蛋白聚集体的形成以及细胞活性氧 (ROS)含量的变化和线粒体膜电位的改变。方法 用不同浓度的IL 1β处理神经胶质瘤U2 5 1细胞 2 4h ,四唑盐 (MTT)比色法测定线粒体氧化还原酶的活性 ,用硫磺素S染色研究细胞内蛋白聚集体形成情况 ,四氯四乙基苯并咪唑基羰花青碘化物 (JC 1)检测线粒体膜电位 ,二氯荧光黄双乙酸盐(DCFH DA)检测细胞内活性氧水平。结果  5ng/ml的IL 1β作用于U2 5 1小于 6h没有降低细胞活性。不同浓度IL 1β处理 2 4h后 ,与对照组比较 ,U2 5 1细胞活性在 5ng/ml时明显下降 (P <0 0 5 ) ,并随着IL 1β剂量继续加大 ,细胞存活率逐渐降低。IL 1β (5 0ng/ml)可导致细胞内蛋白聚集体形成增多 ,并且用JC 1荧光染色可检测到线粒体膜电位明显升高 ,用DCFH DA荧光染色和流式细胞仪定量检测显示 ,U2 5 1细胞内ROS含量增加。结论 IL 1β可引起U2 5 1细胞内蛋白聚集体形成 ,线粒体膜电位增高 ,ROS含量增加进而细胞氧化应激反应增强 ,最终导致细胞死亡
引用
收藏
页码:16 / 21
页数:6
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