Rationally Designed Small-Molecule Inhibitors Targeting an Unconventional Pocket on the TLR8 Protein–Protein Interface
作者:Shuangshuang Jiang、Hiromi Tanji、Kejun Yin、Shuting Zhang、Kentaro Sakaniwa、Jian Huang、Yi Yang、Jing Li、Umeharu Ohto、Toshiyuki Shimizu、Hang Yin
DOI:10.1021/acs.jmedchem.9b02128
日期:2020.4.23
Rational designs of small-molecule inhibitors targeting protein-protein interfaces have met little success. Herein, we have designed a series of triazole derivatives with a novel scaffold to specifically intervene with the interaction of TLR8 homomerization. In multiple assays, TH1027 was identified as a highly potent and specific inhibitor of TLR8. A successful solution of the X-ray crystal structure
针对蛋白质-蛋白质界面的小分子抑制剂的合理设计收效甚微。在本文中,我们设计了一系列具有新型支架的三唑衍生物,以特异性地干预TLR8均化的相互作用。在多种测定中,TH1027被鉴定为TLR8的高效强特异性抑制剂。TLR8的X射线晶体结构与TH1027配合使用的成功解决方案提供了对其结合模式的深入机理研究,验证了TH1027位于两个TLR8单体之间并被认为是一个非常规的口袋,从而阻止了TLR8的活化。进一步的生物学评估表明,TH1027剂量依赖性地抑制了人类单核细胞系,外周血单核细胞和TLR8介导的炎症反应,