叔丁基双氧水诱导HEI-OC1细胞株凋亡与STATs mRNA表达的相关性分析

Analysis of the Relevance between t-BHP Induced Apoptosis and STATs mRNA Expression in HEI-OC1 Cells

曾梓豪;罗璇;姚裕恒;王军义;

1:广东药科大学公共卫生学院

摘要

目的通过分析氧化应激损伤的凋亡HEI-OC1细胞各信号转导及转录激活子(signal transducers and activators of transcription,STATs)的表达,探讨酪氨酸激酶-信号转导及转录激活子(janus kinase-signal transducers and activators of transcription,JAK-STATs)信号通路在毛细胞凋亡中的生物学作用。方法采用不同浓度(0、20、40、60 μM)叔丁基过氧化氢(tert-butyl hydroperoxide,t-BHP)染毒构建HEI-OC1细胞株凋亡模型(0μM浓度为对照组),Annexin V-FITC/PI法检测20、40、60 μM浓度t-BHP染毒组细胞凋亡水平,实时荧光定量PCR检测STATs mRNA表达水平。结果对照组及20、40、60 μM t-BHP染毒组的细胞凋亡率分别为3.9%、7.4%、32.0%、91.2%;与对照组相比,各浓度T-BHP染毒组STAT1mRNA、STAT3mRNA、STAT5mRNA、STAT6 mRNA的表达水平均显著性下降(分别为F=5 534.302,P<0.01;F=146.038,P<0.01;F=685.929,P<0.01;F=516.11,P<0.01),各浓度t-BHP染毒组间差异无统计学意义(P>0.05);与对照组相比各浓度t-BHP染毒组STAT2mRNA的表达水平均有显著变化(F=1 259.148,P<0.01),20 μM染毒组STAT2 mRNA的表达水平明显下降(P<0.01),但40、60 μM染毒组均明显升高(P<0.01);STAT4 mRNA在HEI-OC1细胞株中未见表达。结论 JAK-STAT2信号通路具有促进毛细胞氧化应急损伤凋亡的生物学作用,JAK-STAT1/STAT3/STAT5/STAT6信号通路有抑制毛细胞氧化应急损伤凋亡的生物学作用。

关键词

氧化应激;HEI-OC1细胞株;凋亡;JAK-STAT信号通路;信号传导及转录激活因子

基金项目(Foundation):

广东省科技计划项目(2014A0202126)

作者

曾梓豪;罗璇;姚裕恒;王军义;

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