Cited by 158Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsGenetics and Neurodevelopmental Disorders

Neurogranin enhances synaptic strength through its interaction with calmodulin

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Zhong, Ling, Cherry, Tiffani, Bies, Christine E, Florence, Matthew A, Gerges, Nashaat Z·2009·The EMBO Journal

Abstract

Learning-correlated plasticity at CA1 hippocampal excitatory synapses is dependent on neuronal activity and NMDA receptor (NMDAR) activation. However, the molecular mechanisms that transduce plasticity stimuli to postsynaptic potentiation are poorly understood. Here, we report that neurogranin (Ng), a neuron-specific and postsynaptic protein, enhances postsynaptic sensitivity and increases synaptic strength in an activity- and NMDAR-dependent manner. In addition, Ng-mediated potentiation of synaptic transmission mimics and occludes long-term potentiation (LTP). Expression of Ng mutants that lack the ability to bind to, or dissociate from, calmodulin (CaM) fails to potentiate synaptic transmission, strongly suggesting that regulated Ng-CaM binding is necessary for Ng-mediated potentiation. Moreover, knocking-down Ng blocked LTP induction. Thus, Ng-CaM interaction can provide a mechanistic link between induction and expression of postsynaptic potentiation.

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Crossref · 10.1038/emboj.2009.236

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Authors
Zhong, L., Cherry, T., Bies, C. E., Florence, M. A., & Gerges, N. Z.
Affiliations
Medical College of Wisconsin (US)
Corresponding author
Gerges, Nashaat Z
Venue
The EMBO Journal
Published
2009-08-27
Volume
28
Issue
19
Pages
3027-3039
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2161262899
Cited by
158
References
84
Citations by year
2026: 10 · 2025: 15 · 2024: 11 · 2023: 6 · 2022: 17 · 2021: 5 · 2020: 17 · 2019: 12 · 2018: 9 · 2017: 11 · 2016: 5 · 2015: 9 · 2014: 6 · 2013: 5 · 2012: 8
FWCI
2.73
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Association
  • Extendicare Foundation
  • National Institute on Aging (AG032320, R01AG032320)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
neurogranin, calmodulin, synaptic plasticity, long-term potentiation, NMDA receptor, hippocampal CA1, postsynaptic potentiation, synaptic transmission
MeSH terms
Animals, Calcium, Calmodulin, Cells, Cultured, Hippocampus, Synaptic Transmission, Neuronal Plasticity, Neurons, Protein Binding, Spine, Gene Expression, Receptors, N-Methyl-D-Aspartate, Long-Term Potentiation, Receptors, AMPA, Rats, Neurogranin, Calcium-Calmodulin-Dependent Protein Kinase Type 2

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