Glutamate Receptor, Metabotropic 4 cell line

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Figure 1. Response of ACTOne GRM4 cell line & parental cell line to L-(+)-2-Amino-4-phosphonobutyric acid. ACTOne GRM4 cells and parental cells (AG-10200-238) 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 L-(+)-2-Amino-4-phosphonobutyric acid. Ratios of the two readings (F/F0) are plotted in the figure. A. Dose response curve of L-(+)-2-Amino-4-phosphonobutyric acid in ACTOne GRM4 cell line. EC50 = 0.80 mM in the presence of PDE inhibitor Ro20-1724 and b-adrenoceptor agonist isoproterenol. B. Parental cells do not respond to L-(+)-2-Amino-4-phosphonobutyric acid.