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Related Experiment Video

Updated: Jun 9, 2026

Homochronic Transplantation of Interneuron Precursors into Early Postnatal Mouse Brains
10:08

Homochronic Transplantation of Interneuron Precursors into Early Postnatal Mouse Brains

Published on: June 8, 2018

GABAergic interneuron lineages selectively sort into specific cortical layers during early postnatal development.

Goichi Miyoshi1, Gord Fishell

  • 1Neuroscience Program and the Department of Cell Biology, Smilow Research Center, New York University School of Medicine, New York, NY 10016, USA.

Cerebral Cortex (New York, N.Y. : 1991)
|August 25, 2010
PubMed
Summary
This summary is machine-generated.

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Diverse GABAergic interneurons from MGE and CGE precursors sort into distinct cortical layers postnatally. This radial sorting mechanism ensures proper integration of these crucial inhibitory neurons into the developing cerebral cortex network.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cellular Biology

Background:

  • Understanding the precise integration of diverse γ-aminobutyric acid (GABA)-ergic interneuron subtypes into the cerebral cortex network is crucial.
  • Interneurons are vital for cortical function, regulating network activity through inhibition.

Purpose of the Study:

  • To investigate how different subtypes of GABAergic interneurons, originating from distinct embryonic sources, achieve layer-specific integration within the cerebral cortex.
  • To elucidate the mechanisms underlying the radial sorting and layer-specific positioning of these interneurons during early postnatal development.

Main Methods:

  • Employed inducible in vivo genetic fate mapping techniques to trace the developmental trajectories of interneuron precursors.
  • Analyzed the migration patterns and layer distribution of medial ganglionic eminence (MGE) and caudal ganglionic eminence (CGE)-derived interneurons from embryonic day E12.5 and E16.5.

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Subtype-selective Electroporation of Cortical Interneurons
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Subtype-selective Electroporation of Cortical Interneurons

Published on: August 18, 2014

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons
09:50

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons

Published on: April 20, 2018

Related Experiment Videos

Last Updated: Jun 9, 2026

Homochronic Transplantation of Interneuron Precursors into Early Postnatal Mouse Brains
10:08

Homochronic Transplantation of Interneuron Precursors into Early Postnatal Mouse Brains

Published on: June 8, 2018

Subtype-selective Electroporation of Cortical Interneurons
06:42

Subtype-selective Electroporation of Cortical Interneurons

Published on: August 18, 2014

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons
09:50

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons

Published on: April 20, 2018

Main Results:

  • MGE and CGE interneuron precursors migrate tangentially into the cortex simultaneously but populate deep and superficial layers complementarily in the mature cortex.
  • Despite similar initial layer distribution at postnatal day P1, these populations subsequently segregate into distinct cortical layers.
  • Radial sorting initiation correlates with the upregulation of the potassium/chloride cotransporter KCC2, and layer sorting is subtype-specific.

Conclusions:

  • Radial sorting within the early postnatal cortex is a fundamental mechanism for achieving layer-specific integration of GABAergic interneurons.
  • This process ensures the proper assembly of functional cortical circuits by positioning diverse interneuron subtypes into their appropriate layers.