Related Experiment Video
Updated: Jan 11, 2026
09:33
An Optical Assay for Synaptic Vesicle Recycling in Cultured Neurons Overexpressing Presynaptic Proteins
Published on: June 26, 2018
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Brain-derived synaptic vesicles have an intrinsic ability to sequester tubulin
Tiago Mimoso1, Aleksandr Korobeinikov2, Alexander Stein3
1Institute for X-Ray Physics, University of Göttingen, Göttingen, Germany.
BMC Biology
|November 14, 2025
Summary
Synaptic vesicles actively recruit soluble tubulin, forming tubulin-rich regions. This finding clarifies the role of synaptic vesicles in regulating tubulin availability within the synaptic compartment.
Area of Science:
- Neuroscience
- Cell Biology
Background:
- Microtubules and their function in synaptic boutons are under investigation.
- Evidence links synaptic vesicle clusters to microtubule dynamics.
- The influence of vesicles on synaptic tubulin availability remains unclear.
Purpose of the Study:
- To determine if synaptic vesicles influence tubulin availability in the synaptic compartment.
- To investigate the interaction between synaptic vesicles and tubulin.
Main Methods:
- Analysis of published live imaging experiments.
- Isolation of vesicles from mouse brain.
- In vitro imaging of isolated vesicles with fluorescent tubulin.
Main Results:
- Tubulin is significantly enriched in synaptic vesicle clusters.
- In vitro, synaptic vesicles collect soluble tubulin.
- Tubulin-rich regions (TRRs) form on vesicle clusters.
Conclusions:
- Synaptic vesicle clusters recruit soluble tubulin.
- Synaptic vesicles play a role in regulating local tubulin concentration.
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