Discovery of 1,3,4-oxadiazole derivatives as potential antitumor agents inhibiting the programmed cell death-1/programmed cell death-ligand 1 interaction
作者:Lincheng Fang、Jiping Tian、Kaixuan Zhang、Xiaoyi Zhang、Yingqiao Liu、Zhibo Cheng、Jinpei Zhou、Huibin Zhang
DOI:10.1016/j.bmc.2021.116370
日期:2021.9
(PD-1)/programmed cell death-ligand 1 (PD-L1) interaction by small-molecule inhibitors is emerging cancer immunotherapy. A series of novel 1,3,4-oxadiazole derivatives were designed, synthesized, and evaluated for their activities in vitro and vivo to find potent inhibitors of the PD-1/PD-L1 interaction. Among them, compound Ⅱ-14 exhibited outstanding biochemical activity, with an IC50 of 0.0380 μM. Importantly
小分子抑制剂对程序性细胞死亡-1 (PD-1)/程序性细胞死亡-配体 1 (PD-L1) 相互作用的抑制是新兴的癌症免疫疗法。一系列新型 1,3,4-恶二唑衍生物被设计、合成并评估其体外和体内活性,以寻找 PD-1/PD-L1 相互作用的有效抑制剂。其中,化合物Ⅱ-14表现出优异的生化活性,IC 50为0.0380 μM。重要的是,化合物II-14的 TGI 值为 35.74%,与对照组相比,在小鼠肿瘤模型中具有更有效的功效。令人惊讶的是,当化合物II-14与5-FU结合时 在小鼠肿瘤模型中,TGI值为64.59%,显示出潜在的抗肿瘤协同作用。此外,免疫组织化学分析表明, 化合物II-14通过促进 CD4 + T 细胞浸润到肿瘤组织中来激活免疫微环境。这些结果表明,化合物II-14是一种有前景的先导化合物,可用于进一步开发用于癌症治疗的小分子 PD-1/PD-L1 抑制剂。