CD80-IN-3 is a potent CD80 inhibitor and inhibits CD80/CD28 interaction (Kd: 125 nM; EC50: 630 nM).

PD-1/PD-L1-IN 3 TFA, a macrocyclic peptide, serves as a potent and selective inhibitor of PD-1/PD-L1 interaction. This compound disrupts PD-L1's binding with PD-1 and CD80 by directly binding to PD-L1, exhibiting IC50 values of 5.60 nM and 7.04 nM, respectively. It is utilized in the research of numerous illnesses, such as cancer and infectious diseases [1].

Macluraxanthone (3-Hydroxyblancoxanthone) has many biological activities including anticholinesterase, antioxidant, anticancer, antimalarial, anti-inflammatory and immunomodulatory effects. macluraxanthone promotes the polarization of M1-like pro-inflammatory macrophages by increasing the percentage of macrophages expressing CD86 while decreasing their expression of CD14, CD11b and CD80. Macluraxanthone significantly reduced the production of TNF-α and IL-10 cytokines in the presence of the pro-inflammatory stimulant lipopolysaccharide.