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Updated: Jun 15, 2026
10:43
Preparation, Purification, and Use of Fatty Acid-containing Liposomes
Published on: February 9, 2018
Reactivity and fusion between cationic vesicles and fatty acid anionic vesicles
Filippo Caschera1, Pasquale Stano, Pier Luigi Luisi
1Biology Department, University of RomaTre, Viale G. Marconi 446, I-00146 Rome, Italy.
Journal of Colloid and Interface Science
|February 26, 2010
Summary
Synthetic vesicles with opposite charges fuse, creating compartments for origins of life research. Fusion efficiency improves in low ionic strength buffers, clarifying vesicle fusion terminology.
Area of Science:
- Biochemistry and Biophysics
- Synthetic Biology
- Origins of Life Research
Background:
- Vesicle fusion is crucial for constructing complex cellular compartments.
- Understanding fusion between oppositely charged vesicles is essential for advanced synthetic biology and origin of life models.
- The precise definition and mechanisms of vesicle fusion are not always clearly established in scientific literature.
Purpose of the Study:
- To investigate the fusion process between anionic fatty acid vesicles and cationic surfactant (DDAB) vesicles.
- To determine the yield and conditions favoring fusion between oppositely charged vesicles.
- To clarify the terminology and processes involved in vesicle-vesicle interactions.
Main Methods:
- Utilized fluorescence spectroscopy to monitor fusion events.
- Employed turbidity measurements over time to track reaction kinetics.
- Analyzed vesicle size distribution using dynamic light scattering (DLS).
Main Results:
- Demonstrated successful fusion between POPC/oleate anionic vesicles and POPC/DDAB cationic vesicles with approximately 20% yield.
- Observed that reducing the ionic strength of the buffer significantly enhances vesicle fusion efficiency.
- Identified concurrent non-fusion processes occurring alongside fusion events.
Conclusions:
- Fusion between oppositely charged synthetic vesicles is achievable and can be optimized by controlling ionic strength.
- This study provides a quantitative yield for a specific oppositely charged vesicle fusion system.
- Emphasized the need for precise terminology when describing vesicle fusion and related reactions.
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