项目名称: 利用新型吡唑衍生物研究血管内皮细胞自噬与血管生成的关联机制
项目编号: No.31200859
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 生理学与整合生物学
项目作者: 孟宁
作者单位: 济南大学
项目金额: 23万元
中文摘要: 自噬参与了血管生成,但是,血管内皮细胞(VEC)自噬与血管生成关联机制尚未搞清。本课题组研究发现新型吡唑衍生物MPD在体外诱导血管生成的条件下,对VEC凋亡没有影响,但促进VEC自噬,并且MPD能够使干扰素诱导蛋白10(IP10)和膜整联蛋白β4 (integrin β4)的水平下调;另外,integrin β4在调节VEC自噬中具有重要作用。在此基础上,我们推测MPD可能通过诱导VEC自噬来调节血管生成,IP10和integrinβ4可能是关联两者的关键因子。本项目中,拟首先阻断MPD诱导的自噬,确定自噬在MPD诱导的血管生成中的作用;利用功能阻断和功能增强的技术和方法,明确IP10在MPD诱导的自噬中的功能,确定integrinβ4与IP10之间的关系;利用MPD结合基因组学技术,发掘参与血管生成的新因子,为阐明VEC自噬与血管生成相关联机制提供实验证据,为心血管疾病的治疗提供新策略。
中文关键词: 血管内皮细胞;自噬;血管生成;;
英文摘要: Autophagy plays an important role in angiogenesis, however, the mechanisms of vascular endothelial cell autophagy associate with angiogenesis are not clear. We previously found that ethyl 3-(o-chlorophenyl)-5-methyl-1-phenyl-1H-pyrazole-4-carboxylate (MPD) could induce angiogenesis in vitro, moreover, the interferon-inducible protein 10 (IP10) and integrin β4 protein levels decreased in MPD-treated VECs; Our recent results showed that MPD induced VEC autophagy; Furthermore, we found that integrin β4 regulate autophagy in VECs. Based on the backgrounds mentioned above, autophagy might mediate MPD-induced angiogenesis; IP10 and integrin β4 might be the key regulators in autophagy-induced angiogenesis. In this study, to investigate whether autophagy modulate MPD-induced angiogenesis,we use the autophagy inhibitor and the ATG siRNA to inhibite the MPD-induced autophagy; Then, RNAi and overexpression methods are used to confirm the role of IP10 in MPD-induced autophagy;We also determine the relationship of integrin β4 and IP10;The gene chip was uesd to determine the new components in MPD-induced angiogenesis.This research would provide a theoretical basis for studying the molecular mechanisms of autophagy-induced angiogenesis and provide an important new tool for treating cardiovascular disease.
英文关键词: vascular endothelial cell;autophagy;angiogenesis;;