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Ion Channels

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...

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Updated: Mar 6, 2026

Controllable Ion Channel Expression through Inducible Transient Transfection

Controllable Ion Channel Expression through Inducible Transient Transfection

Published on: February 17, 2017

Controllable Ion Channel Expression through Inducible Transient Transfection.

Matan Geron¹, Adina Hazan¹, Avi Priel²

¹The Institute for Drug Research (IDR), School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem (HUJI).

Journal of Visualized Experiments : Jove

|March 14, 2017

Summary

This study presents a novel transient transfection protocol for controlled expression of the Transient Receptor Potential cation channel subfamily V member 1 (TRPV1) gene. This method enables efficient ion channel analysis using calcium imaging and electrophysiology.

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Area of Science:

Molecular Biology
Cell Biology
Biophysics

Background:

Transfection is crucial for studying ion channels via electrophysiology and biochemical analysis.
Controlling gene expression levels is critical for accurate ion channel research.
Stable transfection offers reliable expression but is time-consuming and resource-intensive.

Purpose of the Study:

To develop an efficient transient transfection protocol for controlled expression of the Transient Receptor Potential cation channel subfamily V member 1 (TRPV1) gene.
To enable precise calibration of ion channel expression levels for various analytical techniques.
To provide a reproducible method for studying ion channel structure and function.

Main Methods:

Transient transfection of the TRPV1 gene using an inducible system.
Utilizing a controlled expression system for gene delivery.
Application of calcium imaging, whole-cell, and single-channel electrophysiological analysis.

Main Results:

Demonstrated efficient and controlled expression of TRPV1 protein.
Achieved precise control over channel expression levels suitable for different experimental analyses.
Successfully performed calcium imaging and whole-cell/single-channel electrophysiology with a single transfection.

Conclusions:

The developed transient transfection protocol offers an efficient and controllable method for ion channel research.
This technique facilitates the study of ion channel structure and function through various analytical approaches.
Provides a replicable method for calibrating gene expression to physiological levels for ion channel analysis.