CHEMBL3707500

In Vitro Uptake Transporter Assay: To assess the inhibition of the OAT1B1 and OAT1B3 uptake transporters, an in vitro uptake transporter assay from Solvo Biotechnology Inc. was used. Uptake experiments with Test Article (TA) at 0.068, 0.2, 0.62, 1.8, 5.5, 16.7 and 50 uM, were performed on CHO cells stably expressing human SLC transporters OATP1B1 and OATP1B3. Parental cell line CHO-K was used as negative control. Cells (1x105 in 200 ul 1:1 mixture of Dulbecco's Modified Eagle's Medium and Ham's F-12 DMEM (F-12, Lonza, N.J., US) supplemented with 5 mM sodium butyrate) were plated on standard 96-well tissue culture plates and incubated 24 hours before the experiment at 37 C. in an atmosphere of 5% CO2 and 95% air. Before experiments the medium was aspirated by vacuum suction, cells were washed with 2x100 ul of Krebs-Henseleit buffer pH 7.3 (prepared from Sigma chemicals, Sigma-Aldrich, St Louis, Mo.). Uptake experiments were carried out at 37 C. in 50 ul of Krebs-Henseleit buffer.