项目名称: 心源性猝死新致病基因致病机制及功能研究
项目编号: No.31301024
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: 田莉
作者单位: 华中科技大学
项目金额: 23万元
中文摘要: 心源性猝死是由于心脏病发作而导致的突然死亡。其病因包括长QT综合征(LQTs),Brugada综合征等,目前其发病机制尚不明确。近来研究表明,这些疾病很多都具有遗传特质,且所发现的已知致病基因大部分均为LQTs致病基因。因此,研究LQTs的致病基因,对研究心源性猝死的发病机制具有重要意义。LQTs是一种易产生恶性心律失常的症候群,死亡率较高。我们在一个LQTs中国大家系中,通过全基因组连锁和基因突变筛选,从遗传学角度初步确定了一个LQTs新的致病基因-YME1L1基因,但其基因突变致病的病理生理学机制亟待进一步研究阐明。基于此本课题设计以YME1L1基因突变对自身亚细胞定位及蛋白表达的影响的研究为切入点,运用分子生物学及细胞电生理学等技术,从不同层面探讨YME1L1基因突变致病的病理生理学机制,功能反证其为LQTs新的致病基因,并拓宽了YME1L1基因的功能学研究。
中文关键词: 心源性猝死;致病基因;细胞电生理学;;
英文摘要: Sudden cardiac death (SCD) is generally defined as unexpected death as the result of cardiovascular causes.At present, the pathogenesis is not clear. Recent studies show that a large percentage of SCDs occur in the setting of gene mutations responsible for inherited abnormalities such as the long QT syndromes(LQTs), Brugada syndrome et. And a large percentage of the pathogenic genes of SCD were genes of LQTs. So, advances in studies on the genes of LQTs have important implications for studies on pathogenesis of SCD. LQTs is an genetic disease causing sudden cardiac death with Torsade de Pointes. In a large family of LQTs. it have identified a novel delicate gene-YME1L1 gene. The pathophysiological mechanisms of gene mutation remains to be further studied. Combined with our preliminary study, we would further study the influence on the ultrastructural localization and protein expression, which was due to the gene mutation. And it is revealed the pathophysiological mechanism of gene mutation leaded to cardiac sudden death from different aspects.
英文关键词: Sudden cardiac death;Virulence gene;Electrophysiology;;