| Assay Method Information | |
| | FLIPR Assay |
| Description: | 1. Culture the cells in cell culture medium (DMEM containing 10% FBS 1× penicillin-streptomycin 300 μg/ml G418 and 100 μg/ml hygromycin B) at 37° C., 5% (v/v) CO2. One day before the assays, detach the cell using TrypLE Express and count cells using cell counter. Only cells with >85% viability are used for the assay. 3. Seed 20000 cells/well in 30 μl/well culture medium to a 384-well cell plate and incubate the cells overnight at 37° C., 5% (v/v) CO2. 4. On the assay day, prepare 2× dye solution following the manual of the FLIPR Calcium 6 Assay Kit: i. Dilute the dye with assay buffer (20 mM HEPES in 1×HBSS, PH7.4); ii. Add probenecid to the final concentration of 5 mM; iii. Vortex vigorously for 1-2 minutes. 5. Medium from cell plate by flicking the cell plate on towel papers. 6. Add 10 μl of assay buffer and 10 μl of 2× dye solution to each well of the cell plate. 7. Put the cell plate on plate shaker, agitate the plate at 600 rpm for 2 minutes. Incubate the plate at 37° C. for 2 hours followed by additional 15-minute incubation at 25° C. 8. Prepare 3× compound in assay buffer: a. Dilute reference compounds to required concentration with DMSO. Add the compounds to a 384-well compound plate; b. Perform serial dilutions; c. Add 10 mM test compounds to the compound plate, perform 3-fold serial dilutions. d. Transfer 60 nl/well of compounds from source plate to a 384-well compound plate (Corning, 3657) by using an Echo; e. Add 20 μl/well assay buffer to the compound plate; f. Mix the plate-on-plate shaker for 2 mins; 9. Put the cell plate, compound plate and tips into FLIPR, transfer 10 μl of 3× compound to the cell plate per well with FLIPR. I.d Data Analysis i. The normalized fluorescence reading (RFU) is calculated as shown follow, while Fmax and Fmin stand for maximum and minimum of calcium signal during defined time window: RFU=Fmax−Fmin |
| Affinity data for this assay | |
|---|---|
| If you find an error in this entry please send us an E-mail | |