缺氧诱导因子1α对大鼠血管内皮细胞通透性的调控作用及相关机制  

Regulation of hypoxia inducible factor-1α on permeability of vascular endothelial cells and the mechanism

作　　者：胡德林[1] 余又新[1] 梁荣 周舜英[1] 段声梁 蒋智永 孟承颖 蒋薇 王欢[1] 孙业祥[1] 方林森[1] Hu Delin;Yu Youxin;Liang Rong;Zhou Shunying;Duan Shengliang;Jiang Zhiyong;Meng Chengying;Jiang Wei;Wang Huan;SunYexiang;Fang Linsen(Department of Burns,the First Affiliated Hospital of Anhui Medical University,Hefei 230022,China;Department of Burns,Health-center of Shangpai Town,Feixi County,Anhui Province,Feixi 231200,China)

机构地区：[1]安徽医科大学第一附属医院烧伤科,合肥230022 [2]安徽省肥西县上派镇中心卫生院烧伤科,231200

出　　处：《中华烧伤杂志》2019年第3期209-217,共9页Chinese Journal of Burns

基　　金：安徽省自然科学基金(1508085SMH231);安徽省重点研究与开发计划(1804h08020230).

摘　　要：目的探讨缺氧诱导因子1α(HIF-1α)对大鼠血管内皮细胞通透性的调控作用及相关机制。方法取12只雄性SD大鼠,35~38d龄,分离主动脉培养血管内皮细胞,4d后观察细胞形态,并取第2或3代细胞进行以下实验。(1)取大鼠血管内皮细胞,采用随机数字表法(分组方法下同)分为空白对照组、阴性对照组、HIF-1α干扰序列1组、HIF-1α干扰序列2组和HIF-1α干扰序列3组,每组3孔。阴性对照组和HIF-1α干扰序列1组、HIF-1α干扰序列2组和HIF-1α干扰序列3组细胞经脂质体2000分别转染GV248空质粒和含HIF-1α干扰序列1、干扰序列2、干扰序列3的GV248重组质粒,空白对照组细胞仅加入脂质体2000。转染24h后,采用实时荧光定量反转录PCR法和蛋白质印迹法(检测方法下同)分别检测各组细胞HIF-1α的mRNA和蛋白的表达,选取干扰效率最高的序列。(2)另取大鼠血管内皮细胞,分为空白对照组、阴性对照组和HIF-1α低表达组,每组3孔。空白对照组细胞仅加入脂质体2000,阴性对照组和HIF-1α低表达组细胞经脂质体2000分别转染GV248空质粒及实验(1)中筛选的低表达HIF-1α重组质粒。培养14d,检测各组细胞HIF-1α的mRNA和蛋白表达水平。(3)另取大鼠血管内皮细胞,分为空白对照组、阴性对照组、HIF-1α高表达组,每组3孔。空白对照组细胞仅加入脂质体2000,阴性对照组、HIF-1α高表达组细胞经脂质体2000分别转染GV230空质粒和HIF-1α高表达重组质粒。培养14d,检测各组细胞HIF-1α的mRNA和蛋白表达水平。(4)取实验(1)中3组、实验(2)中3组细胞,检测肌球蛋白轻链激酶(MLCK)、磷酸化肌球蛋白轻链(p-MLC)和带状闭合蛋白1(ZO-1)的mRNA和蛋白表达水平。对数据行单因素方差分析、t检验。结果培养4d,细胞呈梭形,成功培养出大鼠血管内皮细胞。(1)HIF-1α干扰序列1组、HIF-1α干扰序列2组和HIF-1α干扰序列3组细胞HIF-1α的干扰效率分别为47.66%、45.79%、62.Objective To investigate the regulation of hypoxia-inducible factor-1α(HIF-1α) on permeability of rat vascular endothelial cells and the mechanism. Methods Twelve male Sprague-Dawley rats aged 35 to 38 days were collected and vascular endothelial cells were separated and cultured. The morphology of cells was observed after 4 days of culture, and the following experiments were performed on the 2nd or 3rd passage of cells.(1) Rat vascular endothelial cells were collected and divided into blank control group, negative control group, HIF-1α interference sequence 1 group, HIF-1α interference sequence 2 group, and HIF-1α interference sequence 3 group according to the random number table (the same grouping method below), with 3 wells in each group. Cells in negative control group, HIF-1α interference sequence 1 group, HIF-1α interference sequence 2 group, and HIF-1α interference sequence 3 group were transfected with GV248 empty plasmid, recombinant plasmid respectively containing HIF-1α interference sequence 1, interference sequence 2, and interference sequence 3 with liposome 2000. Cells in blank control group were only transfected with liposome 2000. After transfection of 24 h, expression levels of HIF-1α mRNA and protein of cells in each group were respectively detected by reverse transcription real-time fluorescent quantitative polymerase chain reaction and Western blotting (the same detecting methods below). The sequence with the highest interference efficiency was selected.(2) Another batch of rat vascular endothelial cells were collected and divided into blank control group, negative control group, and HIF-1α low expression group, with 3 wells in each group. Cells in blank control group were only transfected with liposome 2000, and cells in negative control group and HIF-1α low expression group were respectively transfected with GV248 empty plasmid and low expression HIF-1α recombinant plasmid selected in experiment (1) with liposome 2000. After 14 days of culture, the mRNA and protein expressions o

关 键 词：缺氧诱导因子 α亚基 血管 通透性 内皮细胞 肌球蛋白轻链激酶 磷酸化肌球蛋白轻链 带状闭合蛋白1 

分 类 号：R644[医药卫生—外科学]