H2O2诱导H9c2细胞凋亡中circNFIX表达及作用

被引:1
|
作者
崔向伦
蒋梅青
杨维维
刘格格
孙淑琦
徐文华
机构
[1] 青岛大学医学部医学检验系
关键词
RNA,环状; 过氧化氢; 氧化性应激; 细胞凋亡; 心肌梗死;
D O I
暂无
中图分类号
R542.2 [心肌疾病];
学科分类号
摘要
目的探讨环状RNA NFIX(circNFIX)在H9c2细胞凋亡中的表达趋势和功能。方法将H9c2细胞应用200μmol/L的H2O2孵育0、1、3、6、12 h,应用荧光定量PCR方法检测H2O2诱导的H9c2细胞凋亡中circNFIX的表达趋势。将H9c2细胞分为空白对照组(未转染)、siRNA阴性对照组(转染siRNA阴性对照组)和siRNA组(转染siRNA),应用荧光定量PCR方法检测siRNA对circNFIX抑制效果。将H9c2细胞分为对照组(未转染)、H2O2组(应用200μmol/L H2O2孵育12 h)、H2O2+NC组(先转染siRNA阴性对照,余处理同H2O2组)和H2O2+siRNA组(先转染siRNA,余处理同H2O2组),用TUNEL和Western blot方法检测敲低circNFIX对H9c2细胞凋亡的影响。结果 circNFIX表达趋势检测显示,随着H2O2孵育时间的延长,circNFIX的表达水平逐渐下降(F=23.677,P<0.01);转染siRNA可显著降低circNFIX的表达水平(F=424.70,t=24.44~25.97,P<0.01)。TUNEL和Western blot检测结果表明,转染siRNA使TUNEL阳性细胞率和Bax/Bcl-2表达水平显著降低(t=3.27~17.22,P<0.01)。结论在H2O2诱导的H9c2细胞凋亡中circNFIX的表达水平减低,沉默circNFIX的表达抑制H9c2细胞凋亡。
引用
收藏
页码:389 / 393
页数:5
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