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Updated: Jul 10, 2026

A High-content Assay for Monitoring AMPA Receptor Trafficking
Published on: January 28, 2019
Recycling endosomes supply AMPA receptors for LTP
Mikyoung Park1, Esther C Penick, Jeffrey G Edwards
1Department of Neurobiology, Duke University Medical Center, Box 3209, Durham, NC 27710, USA.
Abstract:
Long-term potentiation (LTP) of synaptic strength, the most established cellular model of information storage in the brain, is expressed by an increase in the number of postsynaptic AMPA receptors. However, the source of AMPA receptors mobilized during LTP is unknown. We report that AMPA receptors are transported from recycling endosomes to the plasma membrane for LTP. Stimuli that triggered LTP promoted not only AMPA receptor insertion but also generalized recycling of cargo and membrane from endocytic compartments. Thus, recycling endosomes supply AMPA receptors for LTP and provide a mechanistic link between synaptic potentiation and membrane remodeling during synapse modification.
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