项目名称: 可溶性表氧化物水解酶在动脉粥样硬化中的作用及机制
项目编号: No.81470556
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 医药、卫生
项目作者: 庞炜
作者单位: 北京大学
项目金额: 73万元
中文摘要: 动脉粥样硬化是导致心脑血管疾病的共同病理学基础,也是引起心血管事件及人口死亡的主要原因。花生四烯酸(AA)代谢产物表氧-二十碳三烯酸(EETs)具有重要的心血管保护中功能,而可溶性表氧化物水解酶 (sEH) 可将其水解。在心血管系统疾病发生、发展和治疗中,sEH/EETs发挥了重要的作用。本项目组在预实验中发现,应用sEH抑制剂和sEH基因敲除能减少小鼠动脉粥样硬化斑块面积,但sEH在动脉粥样硬化中的具体作用机制仍不明确。本项目设想sEH在动脉粥样硬化中通过水解EETs,进而增加单核细胞向巨噬细胞的转化,促进炎症因子的产生和调控巨噬细胞的功能,从而影响动脉粥样硬化的进展。我们拟运用sEH和LDLR双基因敲除小鼠,构建动脉粥样硬化模型,同时运用分子生物学、细胞生物学和代谢组学技术,在整体和细胞水平探讨 sEH在动脉粥样硬化中的作用,力图阐明sEH在动脉粥样硬化中发挥作用的根本机制。
中文关键词: 可溶性表氧化物水解酶;表氧-二十碳三烯酸;动脉粥样硬化;单核细胞;巨噬细胞
英文摘要: Atherosclerosis is the common pathological basis of cardio-cerebral vascular diseases, also is the primary cause of cardiovascular events which lead deaths. epoxyeicosatrienoic acids (EETs) have important cardiovascular protection function, which are metabolites derived from arachidonic acid (AA) and metabolized by soluble epoxide hydrolase (sEH). sEH/EETs play an important role in occurrence, development and treatment of cardiovascular diseases. Our pre-experiments show that sEH inhibitor and sEH deficiency can decrease the area of atherosclerotic plaques. However, the mechanism of sEH in atherosclerosis remains unclear. The hypothesis of this proposal is that sEH plays a detrimental role in atherosclerosis through hydrolyzing EETs and increasing the transformation of monocytes into macrophages, promote inflammation and regulates macrophage function. We will use sEH and LDLR double knockout mice as model to investigate the role of sEH in atherosclerosis. Using techniques of molecular biology, cell biology and metabonomics to explore the effects of sEH on atherosclerosis at overall level and cellular level.. Therefore, the aim of this study is to reveal the mechanism of sEH in atherosclerosis.
英文关键词: soluble epoxide hydrolase;Epoxyeicosatrienoic acids;atherosclerosis;monocyte;macrophage