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Preparation of Artificial Bilayers for Electrophysiology Experiments
Published on: October 31, 2008
Preparation of artificial bilayers for electrophysiology experiments
Ruchi Kapoor1, Jung H Kim, Helgi Ingolfson
1Department of Physiology and Biophysics, Weill Cornell Medical College, USA. ruchi.kapoor@med.cornell.edu
Journal of Visualized Experiments : Jove
|December 17, 2008
Summary
This study details the formation and preparation of planar lipid bilayers for studying ion channels. It also outlines methods for measuring lipid bilayer properties using gramicidin channels.
Area of Science:
- Biophysics
- Membrane Biology
- Biochemistry
Background:
- Planar lipid bilayers offer a controlled environment for studying ion channel function.
- These artificial lipid bilayers are crucial for characterizing peptides, reconstituting channels, and investigating bilayer property effects on channel function.
Purpose of the Study:
- To provide a detailed protocol for forming planar lipid bilayers.
- To demonstrate techniques for isolating bilayer patches for single-channel measurements.
- To present a method for assessing lipid bilayer elasticity using gramicidin channels.
Main Methods:
- Formation of planar lipid bilayers.
- Isolation of small bilayer patches.
- Preparation of bilayer chambers and electrodes.
- Testing bilayer suitability for single-channel recordings.
- Utilizing gramicidin channels to probe bilayer elastic properties.
Main Results:
- Successful formation of stable planar lipid bilayers.
- Demonstration of techniques for preparing bilayers for single-channel measurements.
- Establishment of a protocol to measure lipid bilayer elastic properties.
Conclusions:
- The presented methods enable robust formation and characterization of planar lipid bilayers.
- This protocol facilitates the investigation of ion channel function and lipid bilayer properties.
- The use of gramicidin channels provides a valuable tool for studying membrane mechanics.
