CHEMBL3705682

Inhibitor Screening Assay: The primary assay for compound inhibitory activity was the LSD1 Inhibitor Screening Assay Kit (Cayman Chemical Company, Ann Arbor, Mich.; Cayman Chemical Item Number 700120). Briefly, test compounds were diluted to 20.times. the desired test concentration in 100% DMSO and 2.5 .mu.L of the diluted drug sample was added to a black 384-well plate. The LSD1 enzyme stock was diluted 17-fold with assay buffer and 40 .mu.M of the diluted LSD1 enzyme was added to the appropriate wells. The reaction mixture comprised horseradish peroxidase, dimethyl K4 peptide (corresponding to the first 21 amino acids of the N-terminal tail of histone H3), and 10-acetyl-3,7-dihydroxyphenoxazine was then added to wells. Generation of resorufin (generated by reacting with H.sub.2O.sub.2 produced in the reaction) was analyzed on an Envision microplate reader with an excitation wavelength of 530 nm and an emission wavelength of 595 nm.