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Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.

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Related Experiment Video

Updated: May 27, 2025

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins

Published on: June 15, 2018

Measuring plasma membrane fluidity using confocal microscopy.

Pablo Carravilla¹, Luca Andronico¹, Jan Schlegel¹

¹Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden.

Nature Protocols

|February 19, 2025

Summary

This summary is machine-generated.

This study presents a 4-hour protocol for measuring cell membrane fluidity using confocal imaging and environment-sensitive probes. This method provides a reliable way to quantify membrane fluidity, crucial for cell biology and disease research.

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Last Updated: May 27, 2025

Determination of Plasma Membrane Partitioning for Peripherally-associated Proteins

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Published on: June 15, 2018

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Area of Science:

Cell Biology
Biomedicine
Biophysics

Background:

Cell membrane fluidity is vital for cellular functions and varies across cell types, states, and diseases.
Accurate quantification of membrane fluidity is increasingly important in cell biology and biomedicine.
Recent advancements in chemical probes and imaging technologies have improved membrane fluidity measurements.

Purpose of the Study:

To present a detailed and robust protocol for measuring membrane fluidity in cells.
To establish a reliable pipeline for quantitative membrane fluidity assessment.
To facilitate easier and more dependable measurements for researchers.

Main Methods:

Utilizing environment-sensitive fluorescent probes for labeling cell membranes.
Employing confocal imaging for high-resolution visualization.
Implementing a comprehensive image analysis workflow.
The protocol integrates labeling, imaging, and analysis within approximately 4 hours.

Main Results:

A validated protocol for quantitative membrane fluidity measurement is established.
The protocol demonstrates successful application in multiple studies.
The method requires basic expertise in cell culture, wet lab techniques, and microscopy.

Conclusions:

The presented protocol offers a reliable and efficient method for assessing cell membrane fluidity.
This standardized approach will aid researchers in cell biology and biomedicine.
Quantitative membrane fluidity measurements are essential for understanding cellular physiology and disease states.