Novel 8-hydroxyquinoline derivatives targeting β-amyloid aggregation, metal chelation and oxidative stress against Alzheimer’s disease
作者:Xuelian Yang、Pei Cai、Qiaohong Liu、Jiajia Wu、Yong Yin、Xiaobing Wang、Lingyi Kong
DOI:10.1016/j.bmc.2018.04.043
日期:2018.7
A series of multitargeted 8-hydroxyquinoline derivatives were designed and synthesized for the treatment of Alzheimer's disease (AD). In vitro studies indicated that most of the prepared compounds exhibited significant inhibitory effects against self-induced Aβ1-42 aggregation and potential antioxidant properties especially compound 5b (IC50 = 5.64 μM for self-induced Aβ aggregation; the oxygen radical
设计和合成了一系列多目标的8-羟基喹啉衍生物,用于治疗阿尔茨海默氏病(AD)。体外研究表明,大多数制备的化合物对自诱导的Aβ1-42聚集和潜在的抗氧化性能均表现出显着的抑制作用,尤其是化合物5b(自诱导的Aβ聚集的IC50 = 5.64μM;使用荧光素的氧自由基吸收能力(ORAC -FL)值为2.63 Trolox等效项)。值得注意的是,5b可以螯合生物金属并抑制Cu2 + / Zn2 +诱导的Aβ1-42聚集。细胞分析表明,5b对PC2细胞中的氧化毒素H2O2具有极好的保护作用,并具有较低的神经毒性。此外,5b可以在体外穿透血脑屏障(BBB),并且在体内剂量高达2000 mg / kg的小鼠中未显示任何急性毒性。我们的发现为化合物5b作为先导化合物在AD治疗中的潜在应用提供了理论依据。