Cited by 496Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsNeurotransmitter Receptor Influence on Behavior

Emotion Enhances Learning via Norepinephrine Regulation of AMPA-Receptor Trafficking

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Hu, Hailan, Real, Eleonore, Takamiya, Kogo, Kang, Myoung-Goo, Ledoux, Joseph, Huganir, Richard L., Malinow, Roberto·2007·Cell

Abstract

Emotion enhances our ability to form vivid memories of even trivial events. Norepinephrine (NE), a neuromodulator released during emotional arousal, plays a central role in the emotional regulation of memory. However, the underlying molecular mechanism remains elusive. Toward this aim, we have examined the role of NE in contextual memory formation and in the synaptic delivery of GluR1-containing alpha-amino-3-hydroxy-5-methyl-4-isoxazoleproprionic acid (AMPA)-type glutamate receptors during long-term potentiation (LTP), a candidate synaptic mechanism for learning. We found that NE, as well as emotional stress, induces phosphorylation of GluR1 at sites critical for its synaptic delivery. Phosphorylation at these sites is necessary and sufficient to lower the threshold for GluR1 synaptic incorporation during LTP. In behavioral experiments, NE can lower the threshold for memory formation in wild-type mice but not in mice carrying mutations in the GluR1 phosphorylation sites. Our results indicate that NE-driven phosphorylation of GluR1 facilitates the synaptic delivery of GluR1-containing AMPARs, lowering the threshold for LTP, thereby providing a molecular mechanism for how emotion enhances learning and memory.

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Crossref · 10.1016/j.cell.2007.09.017

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  • High levels of noradrenaline acting at α1- and β-receptors enhance memory consolidation processes in the hippocampus and increase the signal/noise ratio in primary sensory cortices.

    “For example, high levels of noradrenaline acting at α1- and β-receptors enhance memory consolidation processes in the hippo-campus82,83 and increase the signal/noise ratio in primary sensory cortices84–86.”

    From Stress signalling pathways that impair prefrontal cortex structure and function (2009) · cites this paper as [83]

    No passage from our copy was returned for hippocampal memory consolidation, α1- or β-adrenergic receptors, or signal-to-noise ratio in sensory cortex. Searches for “hippocampus,” “memory consolidation,” “adrenergic,” and “sensory” also returned no passages, so there is no section or page on which to assess the attribution. (LLM, conf=0.70)

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Authors
Hu, H., Real, E., Takamiya, K., Kang, M.-G., Ledoux, J., Huganir, R. L., & Malinow, R.
Affiliations
  • Cold Spring Harbor Laboratory (US)
  • Howard Hughes Medical Institute (US)
  • New York University (US)
Corresponding author
Malinow, Roberto
Venue
Cell
Publisher
Elsevier BV
Published
2007-10
Volume
131
Issue
1
Pages
160-173
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2102170165
Cited by
496
References
75
Citations by year
2026: 6 · 2025: 16 · 2024: 14 · 2023: 22 · 2022: 26 · 2021: 21 · 2020: 21 · 2019: 35 · 2018: 35 · 2017: 26 · 2016: 24 · 2015: 29 · 2014: 37 · 2013: 32 · 2012: 38
FWCI
10.88
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
National Institute of Mental Health (R01MH049159)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
norepinephrine, GluR1, AMPA receptor trafficking, GluR1 phosphorylation, long-term potentiation, emotional memory, contextual memory, emotional stress, learning and memory, neuromodulation
MeSH terms
Adrenergic alpha-Agonists, Animals, Behavior, Animal, Emotions, Hippocampus, Learning, Male, Memory, Mice, Transgenic, Synaptic Transmission, Norepinephrine, Synapses, Long-Term Potentiation, Receptors, AMPA, Patch-Clamp Techniques, Mice, Rats

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