Cited by 172Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchMemory Processes and Influences

Inducible and Reversible NR1 Knockout Reveals Crucial Role of the NMDA Receptor in Preserving Remote Memories in the Brain

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Cui, Zhenzhong, Wang, Huimin, Tan, Yuansheng, Zaia, Kimberly A, Zhang, Shuqin, Tsien, Joe Z·2004·Neuron

Abstract

Long-term storage of information is a hallmark feature of the brain, yet routine turnover of synaptic receptors appears to be intrinsically paradoxical to this capability. To investigate how the brain preserves its delicate synaptic efficacies, we generated inducible and reversible knockout mice in which the NMDA receptor can be temporarily switched off in the forebrain specifically during the storage stage. Retention of 9-month contextual and cued fear memories is severely disrupted by prolonged, but not transient, loss of the NMDA receptor that occurs 6 months after initial training and at least 2 months prior to memory retrieval. Normal learning and memory function in subsequent tasks following the 9-month retention tests suggest that the observed retention deficits did not result from recall or performance impairment. Thus, our study reveals a hitherto unrecognized role of the NMDA receptor in dynamically maintaining the long-term synaptic stability of memory storage circuits in the brain.

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Crossref · 10.1016/s0896-6273(04)00072-8

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  • Studies using inducible and reversible NMDA receptor knockouts have demonstrated that NMDA receptor reactivation is required to sustain remote memory storage.

    “Studies using inducible and reversible NMDA receptor knockouts have demonstrated that such NMDA receptor reactivation, which may also in part result from spontaneous neuronal activity, is required to sustain remote memory storage73,74.”

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Authors
Cui, Z., Wang, H., Tan, Y., Zaia, K. A., Zhang, S., & Tsien, J. Z.
Affiliations
Princeton University (US)
Corresponding author
Tsien, Joe Z
Venue
Neuron
Publisher
Elsevier BV
Published
2004-03
Volume
41
Issue
5
Pages
781-793
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2120938812
Cited by
172
References
62
Citations by year
2026: 2 · 2025: 4 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 6 · 2016: 15 · 2015: 7 · 2014: 8 · 2013: 17 · 2012: 3
FWCI
7.21
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Israel National Road Safety Authority
  • Burroughs Wellcome Fund
  • East China Normal University
  • W. M. Keck Foundation
  • National Institute of Mental Health
  • National Institute on Aging
  • Arnold and Mabel Beckman Foundation
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
NMDA receptor, NR1 subunit, long-term memory retention, fear memory, contextual fear, cued fear, memory storage, synaptic plasticity, inducible knockout mice, forebrain, memory consolidation
MeSH terms
Animals, Brain, Fear, Female, Male, Memory, Mice, Inbred CBA, Mice, Transgenic, Synapses, Receptors, N-Methyl-D-Aspartate, Mice, Knockout, Excitatory Postsynaptic Potentials, Mice

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