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| | Luciferase Assay |
| Description: | Estrogen receptor-negative CV-1 kidney cells are maintained in Dulbecco's modified Eagle's medium with 4.5 g/L glucose supplemented with 10% fetal bovine serum and 100 units/ml penicillin-streptomycin at 37° C. in a humidified 5% CO2 atmosphere. The cells are then plated in 6-well dishes at a density of 2×10^5 cells per well in phenol-red free Dulbecco's modified Eagle's medium containing 10% charcoal-dextran-stripped fetal bovine serum. CV-1 cells are transfected using LipofectAMINE reagent according to the manufacturer's protocol. Transfections containing 1.5 μg of reporter plasmid (containing ERE-tk-luciferase containing a single ERE cloned upstream of the thymidine kinase promoter and luciferase gene) and 0.5 μg of either ERα or ERβ expression vector (containing CMV-ERα or CMV-ERβ full length coding sequence respectively). The next day, cells receive no treatment (controls) or are treated with estradiol alone (1 nM) or estradiol plus a compound of the invention (at varying concentrations). After 16-24 hours, cells are harvested and assayed for luciferase activity. At the outset, cell monolayers are washed twice with ice-cold phosphate-buffered saline and incubated for 15 minutes in 250 μl of 1× cell culture lysis reagent (Promega, Madison, Wis.). Cell extracts are transferred to a fresh tube and assayed using the luciferase assay system (Promega). For each assay, 10 μl of extract is diluted with 90 μl of 1× cell culture lysis reagent. Luminescence is read using an AutoLumat LB953 luminometer. |
| Affinity data for this assay | |
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