Cited by 151Neurogenesis and neuroplasticity mechanismsAxon Guidance and Neuronal SignalingDevelopmental Biology and Gene Regulation

Layer acquisition by cortical GABAergic interneurons is independent of Reelin signaling

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Pla, Ramón, Borrell, Víctor, Flames, Nuria, Marín, Oscar·2006·The Journal of Neuroscience

Abstract

Functioning of the cerebral cortex requires the coordinated assembly of circuits involving glutamatergic projection neurons and GABAergic interneurons. Despite their segregated origin in different regions of the telencephalon, projection neurons and interneurons born synchronically end up adopting the same cortical layer, suggesting that layer acquisition is highly coordinated for both neuronal types. The radial migration and laminar arrangement of projection neurons depends on Reelin, a secreted glycoprotein expressed near the pial surface during embryogenesis. In contrast, the mechanisms controlling layer acquisition by cortical interneurons remain essentially unknown. Here, we have used an ultrasound-guided transplantation approach to analyze the mechanisms underlying the acquisition of laminar locations by cortical interneurons. We found that layer acquisition by cortical GABAergic interneurons does not directly depend on Reelin signaling. Moreover, interneurons invade their target layers well after synchronically generated projection neurons reach their final destination. These results suggest a model in which cues provided by projection neurons guide cortical interneurons to their appropriate layer, and reveal that, at least for some neuronal types, long-range radial migration does not directly require Reelin.

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Crossref · 10.1523/jneurosci.0245-06.2006

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  • MGE-derived interneurons adopt their laminar distribution following an inside-out sequence correlated with birthdate, similar to pyramidal cells.

    “MGE-derived interneurons adopt their laminar distribution following an ‘inside-out’ sequence that correlates with their birthdate, similar to pyramidal cells”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Pla et al., 2006

  • Interneurons acquire their laminar position after the corresponding pyramidal cells have begun to differentiate into a particular cortical layer.

    “First, interneurons systematically acquire their laminar position after the corresponding pyramidal cells have begun to differentiate into a particular cortical layer (Hevner et al., 2004; Miyoshi and Fishell, 2011; Pla et al., 2006).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Pla et al., 2006

  • Disrupting normal pyramidal cell layering changes the normal laminar distribution of interneurons.

    “Second, disruption of the normal layering of pyramidal cells modifies the normal laminar distribution of interneurons (Lodato et al., 2011; Pla et al., 2006).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Pla et al., 2006

  • Interneurons adopt their laminar distribution in response to cues from pyramidal cells.

    “Several lines of evidence suggest that the interneurons adopt their laminar distribution in response to cues provided by pyramidal cells.”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Pla et al., 2006

  • Interneurons lacking the reelin receptor Dab1 migrate to the appropriate layer when transplanted into the cortex of wild-type mice.

    “interneurons lacking the reelin receptor Dab1 migrate to the appropriate layer when transplanted into the cortex of wild-type mice”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [913]

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Authors
Pla, R., Borrell, V., Flames, N., & Marín, O.
Affiliations
Consejo Superior de Investigaciones Científicas (ES)
Venue
The Journal of Neuroscience
Published
2006-06-28
Volume
26
Issue
26
Pages
6924-6934
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2042566086
Cited by
151
References
57
Citations by year
2026: 4 · 2025: 4 · 2024: 6 · 2023: 4 · 2022: 4 · 2021: 7 · 2020: 8 · 2019: 10 · 2018: 8 · 2017: 13 · 2015: 7 · 2014: 10 · 2013: 9 · 2012: 11
FWCI
2.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, other-oa)
Funders
  • National Alliance for Research on Schizophrenia and Depression
  • European Commission (005139)
  • Ministerio de Economía y Competitividad
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
GABAergic interneurons, Reelin signaling, radial migration, cortical lamination, projection neurons, interneuron migration, telencephalon, embryonic brain development
MeSH terms
Reelin Protein, Animals, Animals, Newborn, Cell Movement, Cerebral Cortex, Embryo, Mammalian, gamma-Aminobutyric Acid, Interneurons, Mice, Transgenic, Nerve Tissue Proteins, Synaptic Transmission, Neurons, Serine Endopeptidases, Time Factors, Signal Transduction, Cell Adhesion Molecules, Neuronal, Extracellular Matrix Proteins, Mice, Knockout, Mice

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