采用免疫荧光细胞化学和Western印迹法,探讨晚期糖基化终产物(AGE)对人脐静脉内皮细胞的ERM(ezrin/radixin/moesin)蛋白磷酸化水平和定位的影响及其机制。AGE以时间和剂量依赖性地增加ERM蛋白磷酸化水平(均P〈0.05),并促进其转位至胞浆内。AGE通过与其受体结合刺激ERM蛋白的磷酸化,Rho激酶及p38丝裂原活化蛋白激酶通路参与了此过程。
The effects of advanced glycation end products ( AGE ) on phosphorylation of ezrin/radixin/ moesin (ERM)protein in human umbilical vein endothelial cells were detected by immunofluorescence cytochemistry and its mechanism was explored. AGE stimulated the phosphorylation of ERM protein in dose- and time-dependent manners ( all P〈0.05 ) , which was involved in AGE receptor, Rho kinase, and p38 mitogen-activated protein kinase pathways.