| Assay Method Information | |
| | Binding Assay |
| Description: | DA transporter binding assay for evaluating binding of the compound to the dopamine transporter was carried out using human recombinant dopamine transporter membrane (PerkinElmer Life and Analytical Sciences, USA) expressed in CHO-K1 cells and radioisotope [3H]WIN35,428 (PerkinElmer).That is, the test drug, 8 nM [3H]WIN35,428, dopamine transporter membrane (23 ug/well), and 50 mM Tris-HCl buffer (pH 7.4) containing 100 mM NaCl were added to obtain a reaction mixture with a final volume of 0.25 ml. After incubation for 120 minutes at 4° C., the mixture was quickly passed through a Filtermat A glass fiber filter pre-soaked with 0.5% (w/v) PEI (polyethyleneimine) using Inotech Harvester (Inotech) to terminate the reaction. After washing with cold washing buffer (50 mM Tris-HCl, pH 7.4, 0.9% NaCl) solution, the filter was covered with MeltiLex and sealed in a sample bag. After drying in an oven, radioactivity was counted using MicroBeta Plus (Wallac). |
| Affinity data for this assay | |
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