Opioid Receptor, Mu 1 cell line

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Figure 1. Response of ACTOne OPRM1 cell line & parental cell line to DAMGO. ACTOne OPRM1 cells and parental cells (AG-10200-200) were plated overnight in 20 ml culture medium on a BD Biocoat 384 well plate. The next day, cells were dye-loaded with 20 ml/well of 1X Dye-loading solution (ACTOne Membrane Potential Assay Kit). After 2 hours of incubation at room temperature, two readings were obtained prior to and 45 min after the addition of DAMGO. Ratios of the two readings (F/F0) are plotted in the figure. A. Dose response curve of DAMGO in ACTOne OPRM1 cell line. EC50 = 1.9 nM in the presence of PDE inhibitor Ro20-1724 and b-adrenoceptor agonist isoproterenol. B. Parental cells do not respond to DAMGO.