项目名称: 过表达ERBB4的衰老间充质干细胞对心梗后心肌再生的保护作用
项目编号: No.81500207
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 医药、卫生
项目作者: 梁小婷
作者单位: 同济大学
项目金额: 18万元
中文摘要: 骨髓间充质干细胞(mesenchymal stem cells,MSCs)在心力衰竭的治疗中极具潜力,但目前效果尚未达理想,尤其老年个体的MSCs功能严重衰退,干细胞的治疗效果受到严重影响。因此,修复衰老的MSCs,延长移植细胞的体内存留时间及存活率,并优化其分泌因子谱,使其更好地发挥治疗效果,是函待解决的关键问题。本项目拟于用分子生物学技术改造衰老的MSCs,通过衰老的MSCs中导入关键性的基因ERBB4,复活衰老的MSCs,一方面优化衰老MSCs的生物学特性,使其更能耐受缺氧环境,以提高移植后的存活率;另一方面优化其旁分泌效应,通过保护受损的心肌细胞和招募心肌干细胞进一步发挥及巩固治疗效果。本项目结合了干细胞和基因治疗的优点,突出研究并优化了干细胞在老年个体中的应用,有望为老年个体的干细胞疗法提供新的思路,成为新的治疗策略。
中文关键词: 心肌缺血;间充质干细胞;细胞衰老
英文摘要: Mesenchymal stem cell (MSC) therapy holds great promise to repair and regenerate myocardium post-myocardial infarction (MI). However, the therapeutic value of MSC in aged individual is hampered by diminished MSC function. Therefore, many attempts have been made to rejuvenate aged-MSCs, improve aged-MSCs survival in the post MI- environment and optimize the secretome of aged-MSCs. In this project, we intend to combine stem cell and gene therapy by manipulating ERBB4 into aged-MSCs, investigate whether ERBB4 overexpression has effects on rejuvenation of aged MSCs in proliferative capacity and paracrine functions, and if so, whether aged-MSC carrying exogenous ERBB4 exerts better cardioprotective effects than naïve aged-MSCs. This study will provide new insights into the mechanisms of ERBB4 control of MSC viability and paracrine factors, which is fundamental for potential cardiac therapy and the bases for development of therapeutic agents to promote MSC-mediated myocardial regeneration.
英文关键词: myocardial infarction;Mesenchymal stem cell;aging