项目名称: PEDF受体的鉴定及在心肌梗死中作用机制的研究
项目编号: No.81200150
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 医学一处
项目作者: 李继科
作者单位: 中国人民解放军第四军医大学
项目金额: 23万元
中文摘要: 近年来色素上皮衍生因子(PEDF)在心血管疾病中的研究成果显著,结合PEDF在心血管疾病中的基础实验和临床研究,我们的前期研究已经证实:细胞旁分泌的PEDF在治疗MI的过程中发挥重要作用,PEDF的靶向基因改造在提高衰老MSCs疗效过程中起到关键性作用;并且发现PEDF可以调节血管平滑肌细胞的功能;当前,在心脏还未发现PEDF的受体,而我们近期研究表明,在心肌细胞和心脏成纤维细胞均有PEDF的已知受体(LR和PLA2)蛋白;但是,并不能确定其为PEDF在心脏的受体。因此,本课题组拟在前期结果的基础上,拟通过酵母双杂交试验鉴定PEDF在心脏的受体(PEDF-R),通过Co-IP和在体动物MI模型探讨PEDF-R对MI心脏功能的影响及其生物学作用,并进一步阐明PEDF-R对心肌细胞和MI的影响过程。
中文关键词: 色素上皮衍生因子;心肌细胞;受体;凋亡;
英文摘要: According to recent research, pigment epithelium-derived factor (PEDF) has lots of functions in cardiovascular disease. In our previous study, we had found that paracrine factor PEDF plays a critical role in the regulatory effects of old MSCs against MI. The impaired therapeutic ability is predominantly caused by increased PEDF secretion. Besides that, PEDF can regulate the function of smooth muscle cells. While,no receptors of PEDF (PEDF-R)had been found at cardiac.But,we had recently found the recognized protein of PEDF-R (LR and PLA2) at cardiocyte and cardiac fibroblast. However, we were uncertain that protein was the PEDF-R at cardiac.Hence, we would to determine the PEDF-R at cardiac through yeast two-hybrid, and identify the functuon of it by Co-IP and other biological effect at cardiocytes and rat MI.
英文关键词: PEDF;cardiomyocytes;receptor;apoptosis;