[D-Leu-4]-OB3 inhibits expressions of pro-inflammatory, proliferative and metastatic genes and PD-L1 expression. [D-Leu-4]-OB3 stimulates expression of pro-apoptotic genes.

PD-1/PD-L1-IN-14 (compound 17) is a bifunctional inhibitor of PD-1/PD-L1 interactions, with an IC50 of 27.8 nM. PD-1/PD-L1-IN-14 (compound 17) inhibits PD-1/PD-L1 interactions and promotes dimerization, internalization, and degradation of PD-L1.

PD-1/PD-L1-IN-13 (Compound 43) is a potent immune checkpoint PD-1/PD-L1 inhibitor with an IC50 value of 10.2 nM. PD-1/PD-L1-IN-13 promots CD8+ T cell activation and delays the tumor growth in the Hepa1-6 syngeneic mouse model.

ARB-272572 is a potent small-molecule PD-L1 inhibitor with an IC50 value of 400 pM.

PD-L1-IN-1 is a potent PD-L1 inhibitor with an IC50 of 115 nM. PD-L1-IN-1 strongly binds with the PD-L1 protein and challenged it in a co-culture of PD-L1 expressing cancer cells (PC9 and HCC827 cells) and peripheral blood mononuclear cells enhanced antitumor immune activity of the latter. PD-L1-IN-1 significantly increased interferon γ release and apoptotic induction of cancer cells, with low cytotoxicity in healthy cells.

PD-1-IN-20 is the less active enantiomer of PD-1-IN-1. PD-1-IN-1 is an inhibitor of programmed cell dealth-1 (PD-1) extracted from patent WO 2015033299 A1, compound example 4.

PD-1-IN-17 TFA is a programmed cell death-1 (PD-1) inhibitor extracted from patent WO2015033301A1, Compound 12, inhibits 92% splenocyte proliferation at 100 nM.

PD-1/PD-L1-IN 3, a macrocyclic peptide, is a potent and selective inhibitor of the PD-1/PD-L1 and CD80/PD-L1 interactions extracted from patent WO2014151634A1, compound No.1. PD-1/PD-L1-IN 3 interferes with PD-L1 binding to PD-1 and CD80 by binding to PD-L1, with IC50s of 5.60 nM and 7.04 nM, respectively. PD-1/PD-L1-IN 3 can be used for the research of various diseases, including cancer and infectious diseases.

TPP-1 TFA is a potent inhibitor of the PD-1/PD-L1 interaction. TPP-1 TFA binds specifically to PD-L1 with a high affinity (KD=95 nM). TPP-1 TFA inhibits human tumor growth in vivo via reactivating T-cell function.

TPP-1 is a potent inhibitor of the PD-1/PD-L1 interaction. TPP-1 binds specifically to PD-L1 with a high affinity (KD=95 nM). TPP-1 inhibits human tumor growth in vivo via reactivating T-cell function.

Human PD-L1 inhibitor III is a human PD-L1 inhibitor.

Human PD-L1 inhibitor V, a polypeptide, is a competitive human PD-1 protein inhibitor with a Kd value of 3.32 μM. Human PD-L1 inhibitor V inhibit the interaction of hPD-1/hPD-L1.

Human PD-L1 inhibitor IV, a polypeptide, is a competitive human PD-1 protein inhibitor with a Kd value of 1.38 μM. Human PD-L1 inhibitor IV inhibits the interaction of hPD-1/hPD-L1.

Human PD-L1 inhibitor II is a potent PD-L1 inhibitor with anti-cancer activity.

PD-1-IN-1 is a small molecule inhibitor of programmed cell dealth-1 (PD-1) extracted from patent WO 2015033299 A1, compound example 4.

PD-1/PD-L1-IN 5 is a PD-1/PD-L1 protein/protein interaction inhibitor extracted from patent WO2017222976A1, compound Example 1, has an IC50 of ≤100 nM.

PD-1/PD-L1-IN 3 TFA is a PD-1/PD-L1 interaction inhibitor extracted from patent WO2014151634A1, compound 1. PD-1/PD-L1-IN 3 TFA inhibits the binding of human PD-1 to PD-Ll with an IC50 of 9 nM.