Anti-inflammatory agent 121

Anti-inflammatory agent 121 is a protease inhibitor, with IC₅₀ values against different targets as follows: 1.3 μM (Staphylococcus aureus type I staphylokinase), 2.2 μM (Staphylococcus aureus type II staphylokinase), 2.3 μM (human MMP-1), 2.7 μM (human MMP-2), 1.4 μM (human MMP-8), 4.6 μM (human MMP-9), and 79 μM (human ADAM17). Anti-inflammatory agent 121 inhibits the activities of staphylococcal serine protease glutamyl endopeptidase (V8 protease) and cysteine protease staphylococcal protease B in Staphylococcus aureus cultures. Anti-inflammatory agent 121 inhibits protease activity in skin wash samples, metalloprotease (staphylokinase) activity in Staphylococcus aureus culture supernatants, and staphylokinase-mediated activation of pro-urokinase-type plasminogen activator (pro-uPA). Anti-inflammatory agent 121 can be used in the research of atopic dermatitis^[1].