Related Experiment Video
Updated: Jun 3, 2026

10:07
High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels
Published on: January 27, 2013
Screening technologies for ion channel drug discovery
Georg C Terstappen1, Renza Roncarati, John Dunlop
1Siena Biotech S.p.A., Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy. gterstappen@sienabiotech.com
Future Medicinal Chemistry
|March 24, 2011
Summary
Ion channels are crucial for bodily functions and disease. Novel screening technologies are advancing ion channel drug discovery for future medicines.
Area of Science:
- Biochemistry
- Pharmacology
- Molecular Biology
Background:
- Ion channels regulate essential physiological processes like movement, heartbeat, and neural signaling.
- Malfunctioning ion channels are implicated in numerous serious diseases.
- Currently, only about 10% of drugs target ion channels, representing a significant untapped therapeutic potential.
Purpose of the Study:
- To provide an overview of current screening technologies for ion channel drug discovery.
- To highlight advances in understanding ion channel structure and function.
- To discuss the potential for rational drug design targeting ion channels.
Main Methods:
- Review of existing literature on ion channel assay technologies.
- Analysis of recent advancements in structural and mechanistic biology of ion channels.
- Exploration of novel screening platforms for drug discovery.
Main Results:
- Significant progress has been made in assay technologies for ion channel screening.
- Improved understanding of ion channel function facilitates rational drug design.
- The field is poised for the development of new therapeutics targeting ion channels.
Conclusions:
- Novel assay technologies and mechanistic insights are driving ion channel drug discovery.
- Exploitation of ion channels as drug targets is expanding.
- Future drug discovery efforts will benefit from these advancements to develop novel medicines.
Related Concept Videos
Patch Clamp
Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
Genetic Screens
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Drug Discovery: Overview
Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
Ion Channels
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
Ion-Exchange Chromatography
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...

