CHEMBL3887716

Inhibition Assay: This test was performed by partially modifying the method of Philip et. al. (J. Biomol. Screen. Vol. 11, pp 481-487, 2006). HEK293 cells that stably express human DAAO were suspended in Cellbanker solution at 5×106 cells/ml and cryopreserved at −80° C. At the time of measurement, the cells were centrifuged at 1000 rpm for one min and the Cellbanker solution was removed. The cells were resuspended at 5×106 cells/ml in FAD-containing buffer (50 mM sodium phosphate [pH 7.5], 18 μM FAD, 0.02% CHAPS). A 4% DMSO buffer solution (50 mM sodium phosphate [pH 7.5], 0.02% CHAPS) of the test compound (4 μL) was added to a 384-well black, low volume plate, the cell suspension (4 μL) was added, and the mixture was incubated at room temperature for 15 min. After incubation, a mixed buffer (4 μL) of 150 mM D-alanine, 1.5 U/mL HRP and 240 μM Amplex red was added to the plate, and the mixture was incubated at room temperature for 30 min, and the fluorescence (excitation w