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Subcellular Fractionation for the Isolation of Synaptic Components from the Murine Brain
Published on: September 14, 2022
Small-scale isolation of synaptic vesicles from mammalian brain
Saheeb Ahmed1, Matthew Holt, Dietmar Riedel
1Department of Neurobiology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany.
Nature Protocols
|April 27, 2013
Summary
This study presents an optimized protocol for isolating high-purity synaptic vesicles (SVs) from rodent brains. The method ensures minimal vesicle loss, enabling crucial biochemical analysis for neurotransmission research.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Synaptic vesicles (SVs) are critical for neurotransmitter release.
- Previous SV isolation protocols often compromise yield for purity.
- Understanding SV protein composition is key to studying neuronal function.
Purpose of the Study:
- To develop a small-scale protocol for high-purity synaptic vesicle isolation.
- To optimize existing fractionation techniques for minimal vesicle loss.
- To enable SV isolation from limited biological material, such as single mouse brains.
Main Methods:
- Utilized standard biochemical fractionation techniques.
- Incorporated differential centrifugation, rate-zonal centrifugation, and size-exclusion chromatography.
- Optimized the procedure for small-scale rodent brain samples.
Main Results:
- Achieved high purity of isolated synaptic vesicles.
- Maximized vesicle recovery with minimal loss during fractionation.
- Recovered approximately 150 μg of vesicle protein from a single mouse brain.
- Protocol completed in under 1 day.
Conclusions:
- The described protocol efficiently isolates pure synaptic vesicles from small brain samples.
- This method facilitates biochemical analysis of SVs, including from transgenic models.
- The optimized protocol supports research into neurotransmitter release and neuronal signaling.
