PD-1/PD-L1-IN-10 (compound B2) is an orally active PD-1/PD-L1 inhibitor (IC50 of 2.7 nM) with potent anticancer efficacy[1].
PD-1/PD-L1-IN-10 (compound B2) significantly promotes interferongamma secretion in a dose-dependent manner in vitro even at the low concentration of 1 nM[1].PD-1/PD-L1-IN-10 (compound B2) does not affect cell viability of LLC cells and lymph node T-cells[1].PD-1/PD-L1-IN-10 (compound B2, 0-100 nM) stabilizes the PD-L1 protein in mouse Lewis lung carcinoma (LLC) cells. In particular, PD-1/PD-L1-IN-10 (compound B2) maintains the PD-L1 stability in a dose-dependent manner at 58 °C. Suggesting that PD-1/PD-L1-IN-10 (compound B2) could enter LLC cells and then directly binds to the PD-L1 protein[1].
PD-1/PD-L1-IN-10 (compound B2, 5 mg/kg, intragastric gavage) exhibits potent in vivo anticancer efficacy in an LLC-bearing allograft mouse model. PD-1/PD-L1-IN-10 (compound B2) effectively blocks tumor cell proliferation and induces apoptosis in LLC tumor tissues.[1].
[1]. Yiqiang OuYang, et al. Design, Synthesis, and Evaluation of o-(Biphenyl-3-ylmethoxy)nitrophenyl Derivatives as PD-1/PD-L1 Inhibitors with Potent Anticancer Efficacy In Vivo. J Med Chem. 2021 May 26.