Related Experiment Video
Updated: Jun 13, 2025
10:34
A High-content Assay for Monitoring AMPA Receptor Trafficking
Published on: January 28, 2019
7.6K
Rab10 inactivation promotes AMPAR trafficking and spine enlargement during long-term potentiation
Jie Wang1,2,3, Jun Nishiyama2,4, Paula Parra-Bueno2
1Department of Neurobiology, Duke University School of Medicine, Durham, NC, 27710, USA.
Biorxiv : the Preprint Server for Biology
|June 12, 2025
Summary
Rab proteins regulate synaptic plasticity. Inactivating Rab10 enhances long-term potentiation (LTP) and AMPA receptor trafficking, while Rab4 activation is transiently important for early LTP stages.
Area of Science:
- Neuroscience
- Cell Biology
- Molecular Biology
Background:
- Rab proteins are key regulators of membrane trafficking.
- Dendritic spine plasticity is crucial for learning and memory.
- Synaptic plasticity involves structural and functional changes in dendritic spines.
Purpose of the Study:
- To investigate the roles of Rab10 and Rab4 in synaptic plasticity.
- To monitor Rab protein activity in single dendritic spines during structural long-term potentiation (sLTP).
Main Methods:
- Development of sensitive sensors for Rab protein activity.
- Monitoring Rab activity in single dendritic spines in rodent organotypic hippocampal slices during sLTP.
- Inhibition and deletion of Rab proteins to assess their function.
Main Results:
- Rab10 was persistently inactivated during sLTP, while Rab4 was transiently activated.
- Inhibiting or deleting Rab10 enhanced sLTP, LTP, and AMPA receptor trafficking.
- Disrupting Rab4 impaired early sLTP and decreased AMPA receptor trafficking.
Conclusions:
- Rab10 and Rab4 oppositely regulate AMPA receptor trafficking during sLTP.
- Rab10 inactivation facilitates LTP induction and associated spine structural plasticity.
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