葡萄糖调节蛋白75在缺糖损伤PC12细胞中的表达

目的观察葡萄糖调节蛋白75(GRP75)在缺糖条件下在PC12细胞中的表达。方法体外模拟能量代谢障碍建立细胞缺糖模型,MTT检测PC12细胞活率;LDH测定细胞膜损伤程度;流式细胞仪PI单染色法和An-nexinV/PI双染色法检测细胞的损伤形式;RT-PCR和W estern b lot分别检测GRP75基因在RNA和蛋白水平上的表达。结果随着缺糖时间的延长细胞活力逐渐降低,LDH释放率明显增加,缺糖死亡的细胞有部分凋亡细胞,并出现明显的凋亡峰,GRP75 mRNA在24 h内表达上调,同时蛋白表达上调。结论GRP75在缺糖损伤PC12细胞中有一定的保护作用。

Glucose regulates protein 75 expression in PC12 cell line under glucose deprivation

Objective To identify the effect of glucose regulating protein 75 expression in PC12 cells under glucose deprivation.Methods MTT method was used to monitor the cell viability.The leakage of LDH was represented as the index of cell injury.Flow cytometry was applied for cell cycle analysis,apoptosis and necrosis.Using RT-PCR detected and quantified mRNA.Western blot to measure relative amounts of the protein.Results Cell viability decreased and the LDH leakage increased.While the treated PC12 cells had two main forms of apoptosis and necrosis.GRP75 mRNA and protein levels were upregulated.Conclusion GRP75 has protective function during glucose deprivation.