血管紧张素Ⅱ调控人脐静脉内皮细胞表达血凝素样氧化低密度脂蛋白受体

被引:4
作者
张磊
黄元伟
姚航平
机构
[1] 浙江大学医学院附属第一医院
[2] 浙江大学医学院免疫学研究所 浙江杭州
[3] 浙江杭州
关键词
血管紧张素Ⅱ; 内皮,血管; 血凝素样氧化低密度脂蛋白受体;
D O I
暂无
中图分类号
R341 [];
学科分类号
1001 ;
摘要
目的 :研究血管紧张素 (Ang )对人脐静脉内皮细胞血凝素样氧化低密度脂蛋白受体 (LOX- 1)基因转录和蛋白表达的影响。方法 :将不同浓度 Ang (10 -5mol/ L~ 10 -10 mol/ L)与人脐静脉内皮细胞系 (HUVECs)共孵育 2 4 h,将 10 -6mol/ L Ang 与 HUVECs作用不同时间 (0、3、6、12、2 4、36、4 8h)后 ,用细胞酶联免疫法和半定量 RT- PCR分别检测 LOX- 1蛋白和 m RNA表达。结果 :10 -5mol/ L~ 10 -10 mol/ L Ang 作用 2 4 h,使内皮细胞LOX- 1蛋白表达的 OD值与对照组相比显著增加 (P<0 .0 0 1) ,其中 Ang 浓度为 10 -5mol/ L~ 10 -9mol/ L 时 ,LOX- 1表达增加呈浓度依赖性。 10 -10 mol/ L Ang 的作用结果与 10 -9mol/ L Ang 的作用结果差异无显著性 ;10 -5mol/ L~ 10 -8mol/ L Ang 可以使内皮细胞 L OX- 1m RNA的表达增加 ,分别为对照组的 4 .4 3、4 .2 5、2 .71和1.84倍。 10 -9mol/ L、10 -10 mol/ L Ang 作用 2 4 h,L OX- 1m RNA表达与对照组相比无显著变化 (P>0 .0 5 )。用10 -6mol/ L Ang 作用 HUVECs不同时间 ,发现共孵育 3h后 ,内皮细胞 L OX- 1m RNA的表达和 L OX- 1蛋白表达的 OD值与对照组相比都有显著增加 (P<0 .0 0 1) ;随着时间延长 ,LOX- 1m RNA的表达至 2 4 h左右达最高峰 ;LOX- 1蛋白表
引用
收藏
页码:16 / 20
页数:5
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