clustered according to their selectivity profiles. Selective BACE1 inhibitors were found to exhibit two distinct conformational features proximal to the flap and the S3 subpocket. Several new molecules were designed and tested to make use of this observation. The combination of a pyrimidinyl C-ring and a methylcyclohexyl element resulted in lead molecule 28, which exhibited ∼50-fold selectivity. Compared
BACE1负责APP蛋白
水解的第一步,导致有毒的Aβ产生,并且已被表明在Alzheimer病的发病机理中起关键作用。相关的亚型
BACE2被认为与色素细胞特异性黑素细胞蛋白的加工有关。为避免对色素沉着的潜在影响,我们研究了开发同工型选择性
BACE1
抑制剂的可行性。分析了47种化合物的共晶结构,并根据其选择性分布进行聚类。发现选择性的
BACE1
抑制剂在皮瓣和S3亚袋附近表现出两个不同的构象特征。利用这一观察结果,设计并测试了几种新分子。
嘧啶基C环和甲基环己基元素的结合产生了
铅分子28,表现出约50倍的选择性。与非选择性
BACE1 / 2
抑制剂相比,28抑制人黑素细胞对PMEL加工的抑制作用明显降低,表明该
抑制剂具有良好的功能选择性。