Author/Editor		Černe, Rok; Wakulchik, Mark; Li, Baolin; Burris, Kevin D.; Priest, Birgit T.
Title		Optimization of a high-throughput assay for calcium channel modulators on IonWorks Barracuda
Type		članek
Vol. and No.		Letnik 14, št. 2
Publication year		2016
Volume		str. 75-83
ISSN		1540-658X - Assay and drug development technologies
Language		eng
Abstract		Voltage-gated calcium channels represent important drug targets. The implementation of higher throughput electrophysiology assays is necessary to characterize the interaction of test compounds with several conformational states of the channel, but has presented significant challenges. We report on the development of a high-throughput, automated electrophysiology assay for Cav2.2 on the IonWorks Barracuda platform. The assay provides an assessment of the potency of the test compound on the resting/closed and inactivated states of the channel in the same assay run. Inclusion of the heavy metal chelator 2,3-bis(sulfanyl)propane-1-sulfonate in the assay solutions improved the data quality by reversing a loss of current seen in wells directly above the ground electrodes. We hypothesize that the loss of current is caused by block of Cav2.2 currents by silver ions originating from the electrodes.
Keywords		drugs electrophysiology assays calcium channels zdravila kalcijevi kanali