作者:Mi-Sun Kim、Lauriane A. Buisson、Dean A. Heathcote、Haipeng Hu、D. Christopher Braddock、Anthony G. M. Barrett、Philip G. Ashton-Rickardt、James P. Snyder
DOI:10.1039/c4ob01874e
日期:——
A structure-based design campaign for non-covalent small molecule inhibitors of human granzyme B was carried out by means of a virtual screening strategy employing three constraints and probe site-mapping with FTMAP to identify ligand “hot spots”. In addition, new scaffolds of diverse structures were subsequently explored with ROCS shape-based superposition methods, following by Glide SP docking, induced fit docking and analysis of QikProp molecular properties. Novel classes of moderately active small molecule blockers (≥25 μM IC50 values) from commercially available libraries were identified, and three novel scaffolds have been synthesized by multi-step procedures. Furthermore, we provide an example of a comprehensive structure-based drug discovery approach to non-covalent inhibitors that relies on the X-ray structure of a covalently bound ligand and suggest that the design path may be compromised by alternative and unknown binding poses.
针对人类颗粒酶B的非共价小分子抑制剂进行了一项基于结构的设计活动,采用了一种虚拟筛选策略,结合三个约束条件和FTMAP探针位点映射,以识别配体“热点”。此外,随后利用ROCS基于形状的叠加方法探索了多样结构的新骨架,接着进行了Glide SP对接、诱导适合对接及QikProp分子性质分析。识别出来自商业可获取库的新型中等活性小分子拮抗剂(IC50值≥25 μM),并通过多步骤合成了三种新骨架。此外,我们提供了一个全面的结构基础药物发现方法的例子,用于非共价抑制剂,该方法依赖于共价结合配体的X射线结构,并指出设计路径可能会因替代和未知的结合姿势而受到影响。