| Assay Method Information | |
| | Cell-based Functional Assay |
| Description: | Measurement of [Ca2+]i using a FLIPR: CHO-OX1 or CHO-OX2 cells are seeded into black-walled clear-base 384-well plates (Costar) at a density of 20,000 cells per well in F12-K medium supplemented with 10% FBS and selection antibiotic (500 ug/ml G418 or 15 ug/ml Blasticidin) and cultured overnight. The cells are incubated with equal volume of calcium4 loading buffer (Molecular Devices, Inc.) containing 2.5 mM probenecid at 37° C. for 30 min, followed by putative OX1 or OX2 receptor antagonists (dose-range 0.1 nM-10 μM) for another 30 min. |
| Affinity data for this assay | |
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