TRB3在同型半胱氨酸抑制内皮细胞增殖中的作用研究
TRB3 Mediates Homocysteine-induced Inhibition of Endothelial Cells Proliferation
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摘要: 目的 研究TRB3对介导同型半胱氨酸的血管内皮细胞抑制的影响.方法 用[3H]-胸腺嘧啶脱氧核苷掺入法测定细胞DNA合成率,基因表达测定采用RT-PCR,蛋白质磷酸化采用Western blotting.结果 同型半胱氨酸处理人脐静脉内皮细胞导致细胞增殖被抑制;同型半胱氨酸诱导的内质网应激,导致CHOP和ATF4表达升高;同型半胱氨酸上调TRB3表达,导致Akt的去磷酸化.结论 TRB3是同型半胱氨酸介导的血管内皮细胞的细胞周期停滞的关键分子.Abstract: Objective To investigate the effect of TRB3 on homocysteine-induced inhibition of endothelial cells proliferation.Methods DNA synthesis in cells was determined by using -thymidine incorporation.The expression of tested genes was detected by real-time PCR.The phosphorylation of proteins was measured by Westren blotting.Results(1)Homocysteine inhibited the proliferation of human umbilical vein endothelial cells(HUVECs).(2)Homocysteine induced endoplasmic reticulum stress,and up-regulated the expression of CHO...
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