Abstract

Ion channels mediate and regulate crucial electrical functions throughout the body. They are therapeutic drug targets for a variety of disorders and, in some cases, the direct cause of unwanted side-effects. Advances in medical genetics have increased our knowledge of ion channel structure–function relationships and identified disease-causing mutations in ion channel genes. The recognized importance of these proteins in health and disease has led to an active search for ion channel targets in the multi-billion-dollar worldwide drug discovery market. Trends in ion channel screening technologies have focused on increasing throughput and enhancing information content of assays through electrophysiological approaches. The ability to study ion channels by voltage clamp and their time-, voltage- and state-dependent drug interactions with enhanced throughput will ultimately play a key role in the development of novel, safe ion channel-targeted drugs.

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