Somatostatin receptor-4 (SST4) is highly expressed in brain regions affiliated with learning and memory. SST4 agonist treatment may act to mitigate Alzheimer's disease (AD) pathology. An integrated approach to SST4 agonist lead optimization is presented herein. High affinity and selective agonists with biological efficacy were identified through iterative cycles of a structure-based design strategy
生长抑素受体 4 (S
ST 4 ) 在与学习和记忆相关的大脑区域中高度表达。S
ST 4激动剂治疗可起到减轻阿尔茨海默病 (AD) 病理学的作用。本文介绍了 S
ST 4激动剂先导优化的综合方法。通过包含计算方法、
化学和临床前药理学的基于结构的设计策略的迭代循环,确定了具有
生物功效的高亲和力和选择性激动剂。我们先前报道的命中 ( 4 )的
1,2,4-三唑衍
生物显示出增强的 S
ST 4结合亲和力、活性和选择性。35 种化合物显示出低纳摩尔范围的 S
ST 4结合亲和力,12 种具有K i < 1 nM。与 S
ST 2A相比,这些化合物对 S
ST 4的亲和力 > 500 倍。S
ST 4活性与各自的 S
ST 4结合亲和力一致(34 种化合物的
EC 50 < 10 nM)。化合物208(S
ST 4 K i = 0.7 nM;
EC 50 = 2.5 nM;比 S
ST 2A高 600 倍以上的选择性)显