Cited by 992Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsNeurogenesis and neuroplasticity mechanisms

Inhibition of activity-dependent arc protein expression in the rat hippocampus impairs the maintenance of long-term potentiation and the consolidation of long-term memory

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Guzowski, John F., Lyford, Gregory L., Stevenson, Gail D., Houston, Frank P., McGaugh, James L., Worley, Paul F., Barnes, Carol A.·2000·The Journal of Neuroscience

Abstract

It is widely believed that the brain processes information and stores memories by modifying and stabilizing synaptic connections between neurons. In experimental models of synaptic plasticity, such as long-term potentiation (LTP), the stabilization of changes in synaptic strength requires rapid de novo RNA and protein synthesis. Candidate genes, which could underlie activity-dependent plasticity, have been identified on the basis of their rapid induction in brain neurons. Immediate-early genes (IEGs) are induced in hippocampal neurons by high-frequency electrical stimulation that induces LTP and by behavioral training that results in long-term memory (LTM) formation. Here, we investigated the role of the IEG Arc (also termed Arg3.1) in hippocampal plasticity. Arc protein is known to be enriched in dendrites of hippocampal neurons where it associates with cytoskeletal proteins (Lyford et al., 1995). Arc is also notable in that its mRNA and protein accumulate in dendrites at sites of recent synaptic activity (Steward et al., 1998). We used intrahippocampal infusions of antisense oligodeoxynucleotides to inhibit Arc protein expression and examined the effect of this treatment on both LTP and spatial learning. Our studies show that disruption of Arc protein expression impairs the maintenance phase of LTP without affecting its induction and impairs consolidation of LTM for spatial water task training without affecting task acquisition or short-term memory. Thus, Arc appears to play a fundamental role in the stabilization of activity-dependent hippocampal plasticity.

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Crossref · 10.1523/jneurosci.20-11-03993.2000

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Authors
Guzowski, J. F., Lyford, G. L., Stevenson, G. D., Houston, F. P., McGaugh, J. L., Worley, P. F., & Barnes, C. A.
Affiliations
  • University of California, Irvine (US)
  • Johns Hopkins University (US)
  • University of Arizona (US)
Venue
The Journal of Neuroscience
Published
2000-06-01
Volume
20
Issue
11
Pages
3993-4001
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2167423431
Cited by
992
References
38
Citations by year
2026: 4 · 2025: 18 · 2024: 27 · 2023: 16 · 2022: 31 · 2021: 36 · 2020: 33 · 2019: 30 · 2018: 34 · 2017: 58 · 2016: 42 · 2015: 49 · 2014: 62 · 2013: 62 · 2012: 65
FWCI
9.18
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k05mh001227-04)
  • National Institute on Aging (AG09219, R01AG009219)
  • National Institute of Mental Health (K02MH001152, MH-01227, MH 53603, R01MH012526, R56MH012526)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
Arc protein, immediate early genes, long-term potentiation, long-term memory consolidation, hippocampus, synaptic plasticity, spatial learning, antisense oligodeoxynucleotides, dendrites, RNA and protein synthesis, short-term memory
MeSH terms
Animals, Behavior, Animal, Cytoskeletal Proteins, Electrophysiology, Gene Expression Regulation, Hippocampus, Male, Memory, Nerve Tissue Proteins, Neuronal Plasticity, Rats, Inbred F344, Synapses, Blotting, Western, Long-Term Potentiation, Maze Learning, Oligodeoxyribonucleotides, Antisense, Rats

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