BMS-1166 是PD-1/PD-L1免疫检查点抑制剂。它促使 PD-L1 形成 PD-L1 同源二聚体，进而阻断其与 PD-1 的相互作用，其IC50为 1.4 nM。它阻断了 PD-1/PD-L1 免疫检查点对 T 细胞活化的抑制作用。

BMS-1166 is a potent PD-1/PD-L1 interaction inhibitor.

BMS-1166 alleviate the inhibitory effect of the soluble PD-L1 on the T-cell receptor-mediated activation of T-lymphocytes. Moreover, the compounds were effective in attenuating the inhibitory effect of the cell surface-associated PD-L1.

Purified proteins in 10 mM Tris (pH 8.0) containing 20 mM NaCl, were concentrated to 5 mg/ml, mixed with the inhibitor in 1:3 molar ratio (protein:compound) and clarified by centrifugation at 15 000 × g for 10 min. Supernatant was used for screening using a sitting-drop vapor diffusion method. Diffraction-quality crystals were obtained at room temperature from 0.1 M Tris pH 8.5 containing 0.2 M magnesium chloride and 30% (w/v) PEG 4000 for the hPD-L1/BMS-1001 complex and from 0.01 M Tris pH 8.4 containing 0.28 M sodium chloride and 27% (w/v) PEG 4000 for hPD-L1/BMS-1166 complex.

1818314-88-3

C36H33ClN2O7

641.12

DMSO:125 mg/mL (194.97 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years