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Published on: October 21, 2018
Detergent resistance as a tool in membrane research.
1Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany.
Nature Protocols
|September 15, 2007
Summary
This study details protocols for analyzing detergent-resistant membranes (DRMs), which are artifactual and not true lipid rafts. DRMs are useful for assessing raft-association potential when linked to biological events.
Area of Science:
- Biochemistry
- Cell Biology
- Membrane Biophysics
Background:
- Biological membranes contain diverse lipid microenvironments.
- Ordered lipid domains, or lipid rafts, are biochemically characterized by detergent resistance.
- Understanding these domains is crucial for cell function.
Purpose of the Study:
- To outline laboratory protocols for analyzing detergent-resistant membranes (DRMs).
- To clarify the artifactual nature of DRMs and their relationship to lipid rafts.
- To establish the utility of DRMs in studying biochemically relevant events.
Main Methods:
- Development and description of specific laboratory protocols for DRM isolation.
- Biochemical analysis of DRM composition.
- Comparison of DRM composition under different physiological conditions.
Main Results:
- Protocols for DRM analysis are efficient, completed in 1-2 days.
- DRMs are artifactual and should not be directly equated with native lipid rafts.
- Changes in DRM composition correlate with biochemically relevant events, indicating their potential utility.
Conclusions:
- DRM analysis provides a valuable, albeit artifactual, method for inferring lipid raft association.
- The utility of DRMs is maximized when their composition changes are linked to physiological or biochemical stimuli.
- These protocols offer a rapid and effective approach to studying membrane domain dynamics.
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