苏木乙酸乙酯提取液通过miRNA-129-5p/Beclin1信号对血管内皮细胞自噬的影响Effect of Sappan Acetic Ether Extract on Autophagy of Vascular Endothelial Cells via miRNA-129-5p/Beclin1 Signal
李鑫峰;袁星星;周亚滨;杨建飞;王倩;
摘要(Abstract):
目的观察苏木乙酸乙酯提取液对内皮细胞miRNA-129-5p/Beclin1信号通路及其介导的自噬的影响。方法人脐静脉内皮细胞分为空白组、模型组、苏木组、模拟剂组及苏木+模拟剂组,除空白组外,余下各组细胞采用氧化低密度脂蛋白(ox-LDL)诱导建立内皮细胞损伤模型并给予相应药物干预。分别采用光学显微镜和透射电镜检测内皮细胞形态及自噬水平,MTT法检测细胞增殖能力,荧光素酶报告基因实验检测miRNA-129-5p和Beclin1的结合活性,RT-PCR法检测miRNA-129-5p及Beclin1 mRNA的表达,Western blotting检测Beclin1、LC3Ⅰ、LC3Ⅱ蛋白的表达。结果与模型组相比,苏木组脐静脉内皮细胞的自噬水平、Beclin1蛋白的表达和LC3Ⅱ/LC3Ⅰ的比值显著增加,miRNA-129-5p的表达水平显著降低,差异均具有统计学意义(P <0.05)。结论苏木乙酸乙酯提取液通过抑制miRNA-129-5p的表达促进Beclin1基因转录后翻译水平,进而促进细胞自噬,发挥抗动脉粥样硬化的作用。
关键词(KeyWords): 动脉粥样硬化;苏木乙酸乙酯提取液;miRNA-129-5p/Beclin1信号;细胞自噬
基金项目(Foundation): 黑龙江中医药管理局中医药科研项目(ZHY18-029);; 黑龙江省教育厅青年创新人才培养项目(UNPYSCT-2018228);; 贵州中医药大学博士启动基金(2019-98)
作者(Authors): 李鑫峰;袁星星;周亚滨;杨建飞;王倩;
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