MMPinhibitor I is a peptide inhibitor of matrix metalloproteinase-1 (MMP-1), MMP-2, and MMP-3 (IC50s = 1.3, 30, and 150 μM, respectively). It is selective for MMP-1, MMP-2, and MMP-3 over the proteases thermolysin, urease, trypsin, α-chymotrypsin, plasmin, and elastase at concentrations up to 4 mM.
MMP-9 inhibitor I is an inhibitor of matrix metalloproteinase-9 (MMP-9) that is selective over MMP-1 and MMP-13 (IC50s = 5, 1,050, and 113 nM, respectively). It also decreases the activity of TNF-α converting enzyme (TACE) in a dose-dependent manner (IC50 = 0.54 μM). MMP-9 inhibitor I decreases TNF-α secretion stimulated by LPS in BV-2 microglial cells when used at concentrations of 50 and 100 μM.
(R)-ND-336 is a highly potent and selective MMP-9 inhibitor, displaying a K i value of 19 nM. It also exhibits inhibitory activity against MMP-2 (K i = 127 nM) and MMP-14 (K i =119 nM). With its significant potential, (R)-ND-336 is being investigated in the field of diabetic foot ulcers (DFUs) research [1].