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NP19 is an inhibitor of the protein-protein interaction between programmed cell death 1 (PD-1) and its ligand PD-L1 (IC50 = 12.5 nM in a homogenous time-resolved fluorescence (HTRF) assay).1 It increases IFN-γ production by isolated human peripheral blood mononuclear cells (PBMCs) in co-culture with anti-CD3 single-chain variable fragment- and PD-L1-expressing Hep3B hepatoma cells (EC50 = ~3 µM). NP19 (25, 50, and 100 mg/kg) reduces tumor growth in a B16/F10 murine melanoma model and an H22 murine hepatocellular carcinoma model.
WARNING This product is not for human or veterinary use.
1. Discovery of novel resorcinol dibenzyl ethers targeting the programmed cell death-