Download MendeleyDiscovery and Crystallography Study of Novel Resorcinol Dibenzyl Ether-Based PD-1/PD-L1 Inhibitors with Improved Drug-like and Pharmacokinetic Properties for Cancer Treatment.
Yang, Z., Yang, P., Xu, J., Yang, X., Zhou, J., He, H., Li, L., Ren, Y., Chen, M., Xiao, Y., Chen, J.(2025) J Med Chem 68: 12593-12614
- PubMed: 40518797
- DOI: https://doi.org/10.1021/acs.jmedchem.5c00344
- Primary Citation of Related Structures:
9LJ3 - PubMed Abstract:
Current studies on PD-1/PD-L1 small-molecule inhibitors mainly focus on modifying the linker region between the biphenyl ring and amino acid side chains, or transforming the biphenyl ring into a benzodioxane structure. Herein, we designed and synthesized a series of compounds by introducing a tail at the terminal phenyl ring as small-molecule PD-1/PD-L1 inhibitors. Among them, compound NPH16 exhibited the most potent PD-L1 inhibitory activity (IC 50 = 24.4 nM). The X-ray crystal structure further confirmed the high binding affinity of NPH16 to PD-L1 dimer. In the HepG2/Jurkat T cell coculture model, NPH16 promoted HepG2 cell apoptosis dose-dependently. In addition, NPH16 showed excellent in vivo antitumor efficacy (TGI = 92.1%) in a Hepa1-6 mouse tumor model and increased CD8 + cells in tumor microenvironment. Importantly, NPH16 possessed favorable pharmacokinetic properties with an oral bioavailability of 15.9%. Collectively, compound NPH16 represents a promising PD-1/PD-L1 inhibitor worthy of further investigation as a potential anticancer agent.
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
Organizational Affiliation:
