Structure-Guided Discovery of Novel, Potent, and Orally Bioavailable Inhibitors of Lipoprotein-Associated Phospholipase A2
作者:Qiufeng Liu、Fubao Huang、Xiaojing Yuan、Kai Wang、Yi Zou、Jianhua Shen、Yechun Xu
DOI:10.1021/acs.jmedchem.7b01530
日期:2017.12.28
inhibitors derived from a relatively weak fragment. Similarity searching on this fragment followed by molecular docking leads to the discovery of a micromolar inhibitor with a 300-fold potency improvement. Subsequently, by the application of a structure-guided design strategy, a successful hit-to-lead optimization was achieved and a number of Lp-PLA2 inhibitors with single-digit nanomolar potency were obtained
脂蛋白相关的磷脂酶A2(Lp-PLA2)是动脉粥样硬化,阿尔茨海默氏病和糖尿病性黄斑水肿的有希望的治疗靶标。在这里,我们报告鉴定衍生自相对较弱的片段的新型磺酰胺支架Lp-PLA2抑制剂。在该片段上进行相似搜索,然后进行分子对接,导致发现了一种微摩尔抑制剂,其效价提高了300倍。随后,通过应用结构指导的设计策略,成功实现了从头至尾的优化,并获得了许多具有单位数纳摩尔效价的Lp-PLA2抑制剂。在初步评估了体内和体外的药物相似性后,将化合物37该同类抑制剂系列在雄性Sprague-Dawley大鼠中具有良好的抑制活性和良好的口服生物利用度,从而脱颖而出,为进一步开发提供了良好的候选者。因此,本研究清楚地证明了在有效的铅发现项目中整合使用片段筛选,晶体结构确定,虚拟筛选和药物化学的功能和优势,为基于结构的药物设计提供了一个很好的例子。