This protocol demonstrates real-time recording of full dose-response relationships for agonist-induced GPCR activation from a single cell layer grown on a single microelectrode using label-free impedance measurements. The new dosing scheme significantly increases throughput without loss in time resolution.
Stolwijk, J. A., Mildner, A., Kade, C., Skiba, M., Bernhardt, G., Buschauer, A., Huebner, H., Gmeiner, P., Wegener, J. Stepwise Dosing Protocol for Increased Throughput in Label-Free Impedance-Based GPCR Assays. J. Vis. Exp. (156), e60686, doi:10.3791/60686 (2020).