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Assay Method Information

Assay Name:  Receptor Binding Assay
Description:  [3H] citalopram binding was assayed according to the method of Owens et al. [Owens M. J. et al., J. Pharm. Exp. Ther., 283, 1305-1322 (1997)]. Specifically, 50 ul of [3H] citalopram (final concentration: approximately 2 nM) diluted with SERT buffer, 149 ul of the h-SERT/CHO membrane preparation (40 ug/well in terms of the amount of the protein), and 1 ul of a solution of a test drug dissolved in DMSO were added to prepare 200 ul in total of a solution. This solution was reacted at room temperature for 60 minutes and then immediately suction-filtered at a low pressure using a glass fiber filter paper coated with a 0.05% aqueous polyethyleneimine solution. The glass fiber filter paper was washed twice with 250 ul of SERT buffer and then transferred to a glass vial containing 4 ml of ACS-II (manufactured by GE Healthcare (formerly Amersham Biosciences)). Radioactivity remaining on the filter paper was measured using a liquid scintillation counter.
Affinity data for this assay
 

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Last update November 1, 2007
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