Cited by 74Neuroscience and Neuropharmacology ResearchSleep and Wakefulness ResearchMemory and Neural Mechanisms

Removal of Synaptic Ca 2+ -Permeable AMPA Receptors during Sleep

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Lanté, Fabien, Toledo-Salas, Juan-Carlos, Ondrejcak, Tomas, Rowan, Michael J., Ulrich, Daniel·2011·The Journal of Neuroscience

Abstract

There is accumulating evidence that sleep contributes to memory formation and learning, but the underlying cellular mechanisms are incompletely understood. To investigate the impact of sleep on excitatory synaptic transmission, we obtained whole-cell patch-clamp recordings from layer V pyramidal neurons in acute slices of somatosensory cortex of juvenile rats (postnatal days 21–25). In animals after the dark period, philanthotoxin 74 (PhTx)-sensitive calcium-permeable AMPA receptors (CP-AMPARs) accounted for ∼25% of total EPSP size, and current–voltage ( I–V ) relationships of the underlying EPSCs showed inward rectification. In contrast, in similar experiments after the light period, EPSPs were PhTx insensitive with linear I–V characteristics, indicating that CP-AMPARs were less abundant. Combined EEG and EMG recordings confirmed that slow-wave sleep-associated delta wave power peaked at the onset of the more quiescent, lights-on phase of the cycle. Subsequently, we show that burst firing, a characteristic action potential discharge mode of layer V pyramidal neurons during slow-wave sleep has a dual impact on synaptic AMPA receptor composition: repetitive burst firing without synaptic stimulation eliminated CP-AMPARs by activating serine/threonine phosphatases. Additionally, repetitive burst-firing paired with EPSPs led to input-specific long-term depression (LTD), affecting Ca 2+ impermeable AMPARs via protein kinase C signaling. In agreement with two parallel mechanisms, simple bursts were ineffective after the light period but paired bursts induced robust LTD. In contrast, incremental LTD was generated by both conditioning protocols after the dark cycle. Together, our results demonstrate qualitative changes at neocortical glutamatergic synapses that can be induced by discharge patterns characteristic of non-rapid eye movement sleep.

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Crossref · 10.1523/jneurosci.3210-10.2011

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  • Results from a recent study suggest that discharge patterns of pyramidal neurons during SWS promote the removal of synaptic Ca2+-permeable AMPA receptors in the somatosensory cortex of juvenile rats.

    “Correspondingly, results from a recent study suggest that discharge patterns of pyramidal neurons during SWS promote the removal of synaptic Ca 2ϩ -permeable AMPA receptors in the somatosensory cortex of juvenile rats (701).”

    From About Sleep's Role in Memory (2013) · cites this paper as [701]

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Authors
Lanté, F., Toledo-Salas, J.-C., Ondrejcak, T., Rowan, M. J., & Ulrich, D.
Affiliations
Trinity College Dublin (IE)
Corresponding author
Ulrich, Daniel
Venue
The Journal of Neuroscience
Published
2011-03-16
Volume
31
Issue
11
Pages
3953-3961
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2084082820
Cited by
74
References
57
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 4 · 2019: 6 · 2018: 3 · 2017: 5 · 2016: 3 · 2015: 7 · 2014: 7 · 2013: 13 · 2012: 10
FWCI
4.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
sleep, AMPA receptors, calcium-permeable AMPA receptors, synaptic plasticity, long-term depression, slow-wave sleep, layer 5 pyramidal neurons, somatosensory cortex, burst firing, protein kinase C, serine/threonine phosphatase, delta oscillations, NREM sleep, memory consolidation
MeSH terms
Action Potentials, Analysis of Variance, Animals, Calcium, Electroencephalography, Electromyography, Electrophysiology, Neurons, Phenols, Polyamines, Sleep, Somatosensory Cortex, Synapses, Rats, Wistar, Receptors, AMPA, Excitatory Postsynaptic Potentials, Rats

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