Cited by 214Neuroscience and Neuropharmacology ResearchNeurogenesis and neuroplasticity mechanismsNeural dynamics and brain function

Structural basis for the role of inhibition in facilitating adult brain plasticity

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Chen, Jerry L, Lin, Walter C, Cha, Jae Won, So, Peter T, Kubota, Yoshiyuki, Nedivi, Elly·2011·Nature Neuroscience

Abstract

Although inhibition has been implicated in mediating plasticity in the adult brain, the underlying mechanism remains unclear. Here we present a structural mechanism for the role of inhibition in experience-dependent plasticity. Using chronic in vivo two-photon microscopy in the mouse neocortex, we show that experience drives structural remodeling of superficial layer 2/3 interneurons in an input- and circuit-specific manner, with up to 16% of branch tips undergoing remodeling. Visual deprivation initially induces dendritic branch retractions, and this is accompanied by a loss of inhibitory inputs onto neighboring pyramidal cells. The resulting decrease in inhibitory tone, also achievable pharmacologically using the antidepressant fluoxetine, provides a permissive environment for further structural adaptation, including addition of new synapse-bearing branch tips. Our findings suggest that therapeutic approaches that reduce inhibition, when combined with an instructive stimulus, could facilitate restructuring of mature circuits impaired by damage or disease, improving function and perhaps enhancing cognitive abilities.

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  • Fluoxetine activates iPlasticity in adult rat visual cortex in a way that closely resembles the natural critical period and the effects of ChABC or an enriched environment.

    “recent findings have shown that the antidepressant fluoxetine activates iPlasticity in the adult rat visual cortex in a manner very similar to that found at the peak of the natural critical period and to that produced by ChABC or enriched environment5,104,141.”
  • Fluoxetine increases structural plasticity in mouse visual cortex and promotes turnover of synaptic sites.

    “Fluoxetine has also been shown to produce enhanced structural plasticity in the mouse visual cortex, promoting turnover of synaptic sites141.”

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Authors
Chen, J. L., Lin, W. C., Cha, J. W., So, P. T., Kubota, Y., & Nedivi, E.
Affiliations
  • Massachusetts Institute of Technology (US)
  • Harvard University (US)
  • The Graduate University for Advanced Studies, SOKENDAI (JP)
Corresponding author
Nedivi, Elly
Venue
Nature Neuroscience
Published
2011-04-10
Volume
14
Issue
5
Pages
587-594
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2024880767
Cited by
214
References
50
Citations by year
2026: 3 · 2025: 5 · 2024: 7 · 2023: 9 · 2022: 13 · 2021: 13 · 2020: 16 · 2019: 7 · 2018: 13 · 2017: 17 · 2016: 18 · 2015: 22 · 2014: 16 · 2013: 25 · 2012: 20
FWCI
9.27
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-sa)
  • PMC
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • Stanley Center for Psychiatric Research, Broad Institute
  • Japan Society for the Promotion of Science
  • National Eye Institute (R01EY017656)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
inhibition, adult brain plasticity, visual deprivation, experience-dependent plasticity, pyramidal neurons, inhibitory tone, fluoxetine, synaptogenesis, neocortex, circuit reorganization
MeSH terms
Animals, Dendrites, Fluorescent Dyes, Fluoxetine, Gene Expression Regulation, Interneurons, Functional Laterality, Mice, Transgenic, Models, Biological, Neural Inhibition, Neuronal Plasticity, Sensory Deprivation, Synapses, Time Factors, Visual Pathways, Nonlinear Dynamics, Antidepressive Agents, Second-Generation, Statistics, Nonparametric, Thy-1 Antigens, Neocortex, Green Fluorescent Proteins, Vesicular Inhibitory Amino Acid Transport Proteins, Vesicular Glutamate Transport Protein 1, Mice

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