PD-L1 inhibitor 4

PD-L1 inhibitor 4 is a small molecule inhibitor of PD-1/PD-L1 with SPR KD of 0.079 nM.PD-L1 inhibitor 4 exhibited substantially increased binding affinity to hPD-L1, as well as PD-1/PD-L1 inhibitory activity in physiological conditions.PD-L1 inhibitor 4 also showed a dose-dependent increase in IFN-γ secretion levels in a mixed lymphocyte reaction assay.

1. Kawashita S, et al. Bioorg Med Chem Lett. 2019 Sep 1;29(17):2464-2467.