Design, Synthesis, and Biological Evaluation of Linear Aliphatic Amine-Linked Triaryl Derivatives as Potent Small-Molecule Inhibitors of the Programmed Cell Death-1/Programmed Cell Death-Ligand 1 Interaction with Promising Antitumor Effects In Vivo
作者:Jialin Guo、Longlong Luo、Zhihong Wang、Naijing Hu、Wei Wang、Fei Xie、Erguang Liang、Xinlin Yan、Junhai Xiao、Song Li
DOI:10.1021/acs.jmedchem.0c01329
日期:2020.11.25
A series of novel linear aliphatic amine-linked triaryl derivatives as inhibitors of PD-1/PD-L1 were designed, synthesized, and evaluated in vitro and in vivo. In this chemical series, compound 58 showed the most potent inhibitory activity and binding affinity with hPD-L1, with an IC50 value of 12 nM and a KD value of 16.2 pM, showing a binding potency approximately 2000-fold that of hPD-1. Compound
设计,合成和评估了一系列新颖的线性脂肪族胺连接的三芳基衍生物作为PD-1 / PD-L1的抑制剂。在该化学系列中,化合物58与hPD-L1表现出最强的抑制活性和结合亲和力,IC 50值为12 nM,KD值为16.2 pM,结合力约为hPD-1的2000倍。化合物58可与细胞表面上的hPD-L1结合并竞争性阻断hPD-1与hPD-L1的相互作用。在T细胞功能测定中,58恢复了T细胞功能,导致IFN-γ分泌增加。此外,在人源化小鼠模型中,化合物58静脉注射后可显着抑制肿瘤生长而无明显毒性,并表现出中等的PK特性。这些结果表明58是进一步开发用于癌症治疗的小分子PD-1 / PD-L1抑制剂的有希望的先导。