氧化应激损伤与HEI-OC1细胞株中Prestin表达的相关性分析

Prestin Expression in HEI-OC1 Cells With Oxidative Stress Damage

王军义;赖晓敏;龚丽娟;夏源;王致;

1:广东药科大学公共卫生学院

2:广州市第十二人民医院

摘要
目的观察氧化应激损伤对HEI-OC1细胞Prestin表达的影响,探讨感音性聋的发生机制。方法采用不同浓度(50、100、200μM)双氧水(H_2O_2)染毒培养的HEI-OC1细胞(染毒组),对照组细胞加入无药物培养液,24h后检测各组细胞超氧化物歧化酶(SOD)活力,实时荧光定量PCR检测Prestin mRNA表达水平,免疫荧光法分析Prestin表达水平。结果与对照组相比,氧化应激损伤后染毒组的HEI-OC1细胞SOD活力明显下降,尤以200μM H_2O_2染毒组下降更明显(F=9 926.293,P<0.01);氧化应激损伤的HEI-OC1细胞Prestin mRNA和Prestin蛋白表达水平均明显下降,200μM H_2O_2染毒组下降更明显(F=4 065.046、7 657.217,P<0.01)。结论氧化应激损伤可抑制Prestin的表达,此为感音性聋的重要病理学变化。
关键词
氧化应激;HEI-OC1细胞;Prestin
基金项目(Foundation):
广东省科技计划项目(2014A0202126);; 国家级大学生创新训练计划项目(201510573010)资助
作者
王军义;赖晓敏;龚丽娟;夏源;王致;
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