| Assay Method Information | |
| | LANCE Ultra TR-FRET Assay |
| Description: | The ability of compounds of Formula I to inhibit cFMS was determined by the following assay. cFMS enzymatic activity was measured using the LANCE Ultra TR-FRET assay technology from PerkinElmer (Waltham, Mass.). Incubation mixtures contained the following: 50 mM NaHEPES, pH 7.3, 10 mM MgCl2, 0.5 mM MnCl2, 0.01% Triton X-100, 1 mM DTT, 1% DMSO, 10 uM ATP, 25 nM LANCE Ultra ULight-poly GAT and 0.5 nM cFMS in a total volume of 10 uL. The concentration of compounds of Formula I was varied over 10-point, 3-fold dilution series with 10,000 nM typically being the highest dose. Incubations were carried out in white ProxyPlate-384 Plus plates (PerkinElmer) at 22 C. for 20 minutes, after which 10 uL of a quench/detection solution was added containing 1x LANCE Detection Buffer, 2 nM LANCE EuW1024 Anti-phosphotyrosine (PY20) and 36 mM EDTA. After an additional 60 minutes incubation at 22 C., the assay plate was read on an EnVision 2103 Multilabel Reader (PerkinElmer). |
| Affinity data for this assay | |
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