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Isolation of Synaptic Vesicles from Mammalian Brain
Marcelo Ganzella1, Momchil Ninov2,3, Dietmar Riedel4
1Laboratory of Neurobiology, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany. marcelo.ganzella@mpibpc.mpg.de.
Methods in Molecular Biology (Clifton, N.J.)
|January 31, 2022
Summary
Researchers developed a rapid 12-hour protocol to isolate synaptic vesicles (SVs) from rodent brains. This method efficiently purifies SVs for biochemical analysis, aiding neurotransmission research.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Synaptic vesicles (SVs) are crucial for neurotransmission, storing and releasing neurotransmitters.
- Characterizing SV molecular properties requires pure vesicle preparations.
- Existing isolation protocols can be time-consuming.
Purpose of the Study:
- To present a modified, time-efficient protocol for isolating synaptic vesicles from rodent brain tissue.
- To enable rapid biochemical characterization of synaptic vesicles.
Main Methods:
- Isolation of nerve terminals from rodent brain tissue.
- Release of SVs via osmotic shock.
- Enrichment through sequential centrifugation and size exclusion chromatography.
Main Results:
- A 22-fold enrichment of SVs compared to starting material.
- A yield of approximately 20 μg of SV protein per gram of mouse brain.
- Minimal contamination by other organelles, comparable to classical protocols.
Conclusions:
- The described protocol provides a rapid (~12 hours) and efficient method for synaptic vesicle isolation.
- This optimized protocol facilitates biochemical studies of synaptic vesicle function and composition.
- The method yields highly purified SVs suitable for detailed molecular analysis.
