项目名称: 基于CE-ECL联用技术研究β-淀粉样蛋白以活性氧为通路的毒性机理
项目编号: No.21505091
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 高分子科学
项目作者: 韦秀华
作者单位: 商丘师范学院
项目金额: 21万元
中文摘要: 阿尔茨海默病(AD)是全球发病率最高的老年神经退行性疾病。β-淀粉样蛋白(Aβ)级联假说是被广泛接受的AD发病机制之一。目前,Aβ聚集体以活性氧(ROS)为通路的神经毒性机理尚不完全清楚。本课题拟通过毛细管电泳技术(CE)实现不同聚集形态Aβ的在线高效分离,联用电化学发光技术(ECL)实时检测Aβ结合Cu2+ 或诱导细胞产生的ROS,联用质谱技术(MS)精确测定经CE分离后的不同聚集形态的Aβ。结合实验数据,分析Aβ聚集形态、Cu2+ 浓度、细胞凋亡与ROS水平之间的相关性,据此探讨Aβ以ROS为通路的毒性作用机理,从而为AD病患的早期诊断及有效治疗提供参考。
中文关键词: 阿尔茨海默病;β-淀粉样蛋白;电化学发光;活性氧
英文摘要: Alzheimer's disease (AD) is the most common human age-related neurodegenerative disorder. One of the widely accepted pathogenesis of AD is amyloid-β(Aβ) cascade hypothesis. At present, the underlying mechanisms of Aβ toxicity induced by producing reactive oxygen species (ROS) are not fully understood. This research is aimed to separate Aβ aggregates from each other by capillary electrophoresis (CE) technique. Coupled with electrochemiluminescence (ECL) technique, the ROS generated by Aβ aggregates binding Cu2+ or inducing neuronal cells can be detected in real time. The mass and structural analysis of Aβ aggregates can be realized by coupling with mass spectrumetry (MS). The correlation between Aβ aggregation state, Cu2+ concentration, apoptosis and ROS level will be established. Then, the mechanism of Aβ toxicity induced by producing ROS can be explored, which will benefit to the diagnosis of AD in the earliest stages.
英文关键词: Alzheimer’s disease;amyloid β-peptide;electrochemiluminescence ;reactive oxygen species