项目名称: microRNA-137调节线粒体自噬的机制及其在帕金森病中的作用
项目编号: No.31301104
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 生物科学
项目作者: 胡喆
作者单位: 广东医学院
项目金额: 23万元
中文摘要: 线粒体自噬功能失调可导致帕金森病,microRNA作为新近发展的疾病相关标志物很有希望能运用于帕金森病的早期诊断。Nix和Fundc1是线粒体自噬受体作用的关键蛋白,但调节它们的microRNA一直未被报导。我们通过分析PD病人血液样本中10个可能与PD相关的microRNA,发现其中miR-137高表达,并能同时靶向调控Fundc1和Nix的表达,我们推测"miR-137可能通过调控Fundc1和Nix调节线粒体自噬而介入帕金森病"。本课题拟采用生化与分子生物学方法、光学显微镜、电镜等技术手段,验证miR-137对Fundc1和Nix的调控,研究miR-137对低氧和Parkin/FCCP诱导的线粒体自噬的抑制情况,并扩大临床样本考察miR-137作为PD病人特异分子探针的可行性。本研究将阐明miR-137通过抑制线粒体自噬介入PD的机制,为寻找有效的PD分子诊断标记提供理论依据。
中文关键词: 自噬;微小RNA;帕金森;神经变性疾病;线粒体自噬
英文摘要: Dysregulation of mitochondrial autophagy may result in Parkinson's disease. microRNA as a kind of disease mark is promising to be applied in Clinical diagnosis for parkinson's disease. Mitophagy receptors Nix and Fundc1 play key roles in mitochondrial autophagy, but microRNAs that regulate mitophagy receptor were not identified. We examined the expression of 10 PD-related microRNAs in the blood samples from Parkinson's disease patients and found high expression level of miR-137,furthermore,we found that miR-137 can target both mitophagy receptors Fundc1 and Nix. We are therefore interested in the mechanisms of miR-137 in regulating mitochondrial autophagy through targeting mitophagy receptor. In this study, we will investigate the regulation of miR-137 on Fundc1 and Nix, use two successfully established mitochondrial autophagy induction system hypoxia and Parkin/FCCP to further probe the functional role of miR-137 in mitochondrial autophagy regulation and Parkinson's disease. Our study may provide the theory basis and the target for clinical therapy of Parkinson's disease.
英文关键词: autophagy;microRNA;parkinson;neurodegenerative diseases;mitophagy