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Related Experiment Video

Updated: Jun 29, 2025

Differentiation of Mouse Embryonic Stem Cells into Cortical Interneuron Precursors
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Spatial enhancer activation influences inhibitory neuron identity during mouse embryonic development.

Elena Dvoretskova1,2, May C Ho1,2, Volker Kittke3,4,5

  • 1Max Planck Institute for Biological Intelligence, Martinsried, Germany.

Nature Neuroscience
|March 26, 2024
PubMed
Summary

Transcription factors MEIS2 and DLX5 promote projection neuron development in the embryonic brain. LHX6 acts to repress this pathway in interneurons, ensuring distinct cell fates.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • The mammalian telencephalon features diverse GABAergic projection neurons and interneurons originating from the embryonic basal ganglia germinal zone.
  • Mechanisms governing cell-type specification from this germinal zone remain incompletely understood.

Purpose of the Study:

  • To elucidate the genetic mechanisms controlling the development of distinct GABAergic neuron subtypes in the embryonic basal ganglia.
  • To investigate the role of transcription factors in cell fate specification within the mouse ganglionic eminence.

Main Methods:

  • In vivo CRISPR perturbation
  • Lineage tracing analyses
  • Chromatin immunoprecipitation sequencing (ChIP-sequencing)

Main Results:

  • The transcription factor MEIS2, in conjunction with DLX5, promotes projection neuron development by binding to enhancers of projection-neuron-specific genes.
  • The transcription factor LHX6 represses MEIS2-DLX5 activity on these enhancers in interneuron precursors.
  • Meis2 mutations impair enhancer activation and affect GABAergic neuron differentiation.

Conclusions:

  • A differential binding model is proposed, where transcription factor interactions at cis-regulatory elements dictate cell fate specification.
  • MEIS2 and DLX5 act as key drivers for projection neuron fate, while LHX6 ensures proper interneuron development.