摘要:目的观察过表达NR2E1能否保护MIN6细胞抵抗棕榈酸(palmitate,PA)所致的内质网应激凋亡,为糖尿病分子流行病学研究策略提供新的思路。方法建立过表达NR2E1小鼠胰岛细胞系MIN6细胞株,随后给予500μmol/L PA处理24h,利用流式细胞仪检测细胞凋亡率,实时定量PCR(RT-PCR)法检测CCAAT/增强子结合蛋白同源蛋白(C/EBP-homologous protein,CHOP)和重链结合蛋白(heavy-chain binding protein,BiP)mRNA的表达变化。结果过表达NR2E1能减少PA诱导的MIN6细胞凋亡率(P〈0.01)和CHOP mRNA表达(P〈0.01),增加BiP mRNA表达(P〈0.05)。结论过表达NR2E1可以抵抗PA诱导的胰岛β细胞内质网应激凋亡,在分子水平为预防糖尿病发生发展提供了一些参考。
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