Assay Method Information |
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| Functional Calcium Flux Assay |
Description: | For functional assays, HEK293 cells stably expressing recombinant rat mGluR5 were seeded in 384-well plates and dye loaded using Fluo-8. Cells were then washed to remove the un-incorporated dye. Antagonist evaluation was performed following a 15 min incubation of the test compound followed by the addition of submaximal concentration of glutamate. Intracellular calcium ([Ca2+]i) measurements were performed using a fluorometric imaging plate reader (FLIPR, Molecular Devices). The glutamate-evoked increase in [Ca2+]i in the presence of the test compounds was compared to the response to glutamate alone (the positive control). Antagonist inhibition curves were fitted with a 4-parameter logistic equation giving IC50 values, and Hill coefficients using an iterative nonlinear curve fitting algorithm. |
Affinity data for this assay | |
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