Regulatory Activities of Dopamine and Its Derivatives toward Metal-Free and Metal-Induced Amyloid-β Aggregation, Oxidative Stress, and Inflammation in Alzheimer’s Disease
作者:Eunju Nam、Jeffrey S. Derrick、Seunghee Lee、Juhye Kang、Jiyeon Han、Shin Jung C. Lee、Su Wol Chung、Mi Hee Lim
DOI:10.1021/acschemneuro.8b00122
日期:2018.11.21
involvement of DA and its structural analogues in the pathogenesis of Alzheimer's disease (AD), the most common form of dementia, composed of multiple pathogenic factors has not been clear. Herein, we report that DA and its rationally designed structural derivatives (1-6) based on DA's oxidative transformation are able to modulate multiple pathological elements found in AD [i.e., metal ions, metal-free amyloid-β
儿茶酚胺神经递质多巴胺(DA)被认为与痴呆症的病理有关。然而,尚不清楚DA及其结构类似物是否参与由多种致病因素组成的痴呆症最常见的形式-阿尔茨海默氏病(AD)的发病机理。本文中,我们报道了DA及其基于DA的氧化转化而合理设计的结构衍生物(1-6)能够调节AD中发现的多种病理元素[即金属离子,无金属淀粉样β(Aβ),金属-结合Aβ(金属-Aβ)和活性氧(ROS)],并证明了详细的分子水平机制。我们的多学科研究证实,DA及其衍生物对Aβ聚集和Aβ介导的毒性的保护作用是由其在有氧条件下氧化转化并伴随产生ROS诱导的。特别地,DA和衍生物(即3和4)显示出它们对不含金属的Aβ和/或金属-Aβ的显着的抗淀粉样蛋白生成能力,经证实是通过它们的促进Aβ氧化的氧化转化而发生的。此外,在初级泛小胶质细胞标记物(CD11b)阳性细胞中,大脑中炎症介质的主要产生者DA及其衍生物通过减少炎症介质的诱导以及脂多糖和