Synthesis and biological evaluation of thieno[3,2-c]pyrazol-3-amine derivatives as potent glycogen synthase kinase 3β inhibitors for Alzheimer’s disease
作者:Ning Yan、Fei Xie、Long-Qian Tang、De-Feng Wang、Xiang Li、Chao Liu、Zhao-Peng Liu
DOI:10.1016/j.bioorg.2023.106663
日期:2023.9
as a potent GSK-3β inhibitor with an IC50 of 3.4 nM and an acceptable kinase selectivity profile. In the rat primary cortical neurons, compound 54 showed neuroprotective effects on Aβ-induced neurotoxicity. Western blot analysis indicated that 54 inhibited GSK-3β by up-regulating the expression of phosphorylated GSK-3β at Ser9 and down-regulating the expression of phosphorylated GSK-3β at Tyr216. Meanwhile
糖原合成酶激酶 3β (GSK-3β) 是抗阿尔茨海默病 (AD) 药物开发的潜在靶标。在这项研究中,合成了一系列新型噻吩并[3,2- c ]吡唑-3-胺衍生物,并通过基于结构的药物设计评估其作为潜在的GSK-3β抑制剂的效果。具有 4-甲基吡唑部分的噻吩并[3,2- c ]吡唑-3-胺衍生物54通过 π-阳离子相互作用与 Arg141 相互作用,被鉴定为有效的 GSK-3β 抑制剂,IC 50为 3.4 nM,可接受的激酶选择性谱。在大鼠原代皮质神经元中,化合物54对 Aβ 诱导的神经毒性表现出神经保护作用。 Western blot分析表明54通过上调Ser9位点磷酸化GSK-3β的表达并下调Tyr216位点磷酸化GSK-3β的表达来抑制GSK-3β。同时, 54以剂量依赖性方式降低 Ser396 tau 磷酸化。在星形胶质细胞和小胶质细胞中, 54抑制诱导型一氧化氮合酶(iNOS)的