| Assay Method Information | |
| | Kinase Inhibitory Activity Assay |
| Description: | The inhibitory activity of some of the compounds described above against FLT3-ITD, FLT3 wild type (WT), VEGFR2 (KDR), and SYK kinase was measured.The inhibitory activity of the compounds against mutant proteins, such as FLT3 WT and ITD, was evaluated based on the LanthaScreen technology developed by Thermo Fisher Scientific Inc. This assay is based on the binding of Alexa Fluor 647-labeled, ATP-competitive kinase inhibitor (kinase tracer-236) to kinase, and signals of fluorescence resonance energy transfer (FRET) were measured in the presence of europium-conjugated antibody. This experiment was carried out on a 384-well plate in conditions including 50 mM HEPES pH 7.5, 0.01% BRIJ-35, 10 mM MgCl2, 1 mM EGTA, and 1% DMSO. After measuring the background signal in the absence of proteins such as FLT3 or FLT3-ITD and measuring the non-inhibition signal by adding only the solvent (1% DMSO), an evaluation compound was used at a set concentration (for example, 50 nM to 0.05 nM, 1:10 dilution) to calculate the kinase inhibitory activity of the evaluation compound as IC50. |
| Affinity data for this assay | |
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