Identification of orally bioavailable small-molecule inhibitors of hematopoietic prostaglandin D2 synthase using X-ray fragment based drug discovery
作者:Gordon Saxty、David Norton、Karen Affleck、Dave Clapham、Anne Cleasby、Joe Coyle、Philip Day、Martyn Frederickson、Ashley Hancock、Heather Hobbs、Jonathan Hutchinson、Joelle Le、Melanie Leveridge、Rachel McMenamin、Paul Mortenson、Lee Page、Caroline Richardson、Linda Russell、Emma Sherriff、Simon Teague、Sorif Uddin、Simon Hodgson
DOI:10.1039/c3md00280b
日期:——
Using X-ray crystallographic screening, fragments 4 and 6 were identified as inhibitors of hematopoietic prostaglandin D2 synthase (H-PGDS). Both fragments induced a small protein movement in the X-ray crystal structure relative to the apo structure, where the highly polar nature of the ligand complemented the induced protein conformation. The manuscript describes the fragment optimisation of 4 and 6 followed by fragment growth to lead molecule 10. This showed favourable physicochemical properties and evidence of oral activity in blocking PGD2 generation in vivo.
通过 X 射线晶体学筛选,4 号和 6 号片段被确定为造血前列腺素 D2 合酶(H-PGDS)的抑制剂。这两个片段都诱导了 X 射线晶体结构中蛋白质相对于 apo 结构的微小移动,配体的高极性与诱导的蛋白质构象相辅相成。手稿介绍了对 4 和 6 的片段优化,然后将片段发展为先导分子 10。这显示了良好的理化特性,并证明了在体内阻断 PGD2 生成的口服活性。