Cited by 133Neurotransmitter Receptor Influence on BehaviorAxon Guidance and Neuronal SignalingNeuroscience and Neuropharmacology Research

The netrin receptor DCC is required in the pubertal organization of mesocortical dopamine circuitry

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Manitt, C., Mimee, A., Eng, C., Pokinko, M., Stroh, T., Cooper, H. M., Kolb, B., Flores, C.·2011·Journal of Neuroscience

Abstract

Netrins are guidance cues involved in neural connectivity. We have shown that the netrin-1 receptor DCC (deleted in colorectal cancer) is involved in the functional organization of the mesocorticolimbic dopamine (DA) system. Adult mice with a heterozygous loss-of-function mutation in dcc exhibit changes in indexes of DA function, including DA-related behaviors. These phenotypes are only observed after puberty, a critical period in the maturation of the mesocortical DA projection. Here, we examined whether dcc heterozygous mice exhibit structural changes in medial prefrontal cortex (mPFC) DA synaptic connectivity, before and after puberty. Stereological counts of tyrosine-hydroxylase (TH)-positive varicosities were increased in the cingulate 1 and prelimbic regions of the pregenual mPFC. dcc heterozygous mice also exhibited alterations in the size, complexity, and dendritic spine density of mPFC layer V pyramidal neuron basilar dendritic arbors. Remarkably, these presynaptic and postsynaptic partner phenotypes were not observed in juvenile mice, suggesting that DCC selectively influences the extensive branching and synaptic differentiation that occurs in the maturing mPFC DA circuit at puberty. Immunolabeling experiments in wild-type mice demonstrated that DCC is segregated to TH-positive fibers innervating the nucleus accumbens, with only scarce DCC labeling in mPFC TH-positive fibers. Netrin had an inverted target expression pattern. Thus, DCC-mediated netrin-1 signaling may influence the formation/maintenance of mesocorticolimbic DA topography. In support of this, we report that dcc heterozygous mice exhibit a twofold increase in the density of mPFC DCC/TH-positive varicosities. Our results implicate DCC-mediated netrin-1 signaling in the establishment of mPFC DA circuitry during puberty.

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Crossref · 10.1523/jneurosci.0606-11.2011

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  • The dopaminergic innervation of the mPFC in rodent surges during adolescence, hallmarked by massive changes in the organization, shape and density of the dopaminergic fibers.

    “The dopaminergic innervation of the mPFC in rodent surges during adolescence hallmarked by massive changes in the organization, shape and density of the dopaminergic fibers [162–164].”

    From Development of prefrontal cortex (2022) · cites this paper as [162]

  • DCC is involved in the organization of dopaminergic circuits within the cortex.

    “DCC is involved in the organization of dopaminergic circuits within the cortex [108]”

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Authors
Manitt, C., Mimee, A., Eng, C., Pokinko, M., Stroh, T., Cooper, H. M., Kolb, B., & Flores, C.
Affiliations
  • Douglas Mental Health University Institute (CA)
  • Montreal Neurological Institute and Hospital (CA)
  • The University of Queensland (AU)
  • University of Lethbridge (CA)
Corresponding author
Flores, C.
Venue
Journal of Neuroscience
Published
2011-06-08
Volume
31
Issue
23
Pages
8381-8394
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1982830599
Cited by
133
References
89
Citations by year
2026: 1 · 2025: 8 · 2024: 17 · 2023: 14 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 6 · 2018: 8 · 2017: 14 · 2016: 5 · 2015: 5 · 2014: 10 · 2013: 11 · 2012: 6
FWCI
3.84
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
DCC receptor, netrin-1, mesocortical dopamine system, medial prefrontal cortex, puberty, synaptic connectivity, dendritic spine density, nucleus accumbens, tyrosine hydroxylase, varicosities, axon guidance, dendritic arbor development
MeSH terms
DCC Receptor, Analysis of Variance, Animals, Cell Count, Dopamine, Immunohistochemistry, Male, Mice, Transgenic, Nerve Net, Neurons, Receptors, Cell Surface, Synapses, Tyrosine 3-Monooxygenase, Prefrontal Cortex, Tumor Suppressor Proteins, Dendritic Spines, Mice

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