Lipid Bilayer Vesicle Generation Using Microfluidic Jetting

作者： Christopher W. Coyne1, Karan Patel1, Johanna Heureaux1, Jeanne Stachowiak3, Daniel A. Fletcher4,5, Allen P. Liu1,2 1Department of Mechanical Engineering,University of Michigan, 2Department of Biomedical Engineering,University of Michigan, 3Department of Biomedical Engineering, Institute for Cellular and Molecular Biology,The University of Texas at Austin, 4Department of Bioengineering,University of California, Berkeley, 5Physical Biosciences Division,Lawrence Berkeley National Laboratory

简介：

Overview

This article discusses a method for generating phospholipid bilayer vesicles using microfluidic jetting against a droplet interface lipid bilayer. The technique allows for precise control over membrane asymmetry, transmembrane protein incorporation, and encapsulation of materials.

Key Study Components

Area of Science

• Neuroscience
• Biophysics
• Biotechnology

Background

• Phospholipid bilayer vesicles are essential for studying compartmentalized biomolecules.
• Microfluidic techniques enhance the reproducibility and control of vesicle formation.
• Understanding membrane properties is crucial for various biological applications.
• Jetting technology can streamline the process of vesicle generation.

Purpose of Study

• To generate vesicles with controlled membrane characteristics.
• To facilitate the incorporation of specific proteins into the bilayer.
• To enable the encapsulation of various materials for research purposes.

Methods Used

• Manufacturing a chamber from acrylic sheets and natural rubber.
• Producing a suspended lipid bilayer by loading the chamber with lipids and solution.
• Setting up an inkjet apparatus for encapsulating solutions.
• Establishing appropriate settings for jetted fluid pulses to create vesicles.

Main Results

• Microfluidic jetting produces repeatable, mono-dispersed bilayer vesicles.
• The method allows for precise control over vesicle properties.
• Encapsulation of materials is achieved effectively.
• Vesicles can be tailored for various biological studies.

Conclusions

• Microfluidic jetting is a reliable technique for vesicle generation.
• Control over membrane asymmetry and protein incorporation is enhanced.
• This method has significant implications for studying compartmentalized biomolecules.

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