Inhibition of ADAM17 in human A549 cells assessed as decrease in PMA-stimulated soluble TGFalpha level in cell supernatant at 10 uM preincubated for 1 hr followed by PMA stimulation measured after 1 hr by ELISA
Inhibition of full length recombinant ADAMTS4 (unknown origin) expressed in insect Sf9 cells after 6 hrs by alkaline phosphatase-based assay, IC50=10μM.
Inhibition of full length recombinant ADAMTS5 (unknown origin) expressed in insect Sf9 cells after 6 hrs by alkaline phosphatase-based assay, IC50=10μM.
重組人MMP2經(jīng)1 mM 4-氨基苯基乙酸乙酯在37℃活化1 h。在96孔熒光板里檢測(cè)濃度遞增抑制劑存在下的1 μM的熒光淬滅MMP底物((7-methoxycoumarin-4-yl)acetyl-Pro-Leu-Gly-Leu-[3-(2,4-dinitrophenyl)-L-2,3-diaminoproprionyl]-Ala-Arg-NH2)的裂解率,溶劑為37°C 100 mM Tris-HCl (pH 7.5)、100 mM NaCl、10 mM CaCl2、0.05% Brij 35,激發(fā)波長320 nm,發(fā)射光波長405 nm。曲線擬合和IC50的計(jì)算采用GraphPad Prism 5軟件。