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Related Experiment Video

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A gene regulatory network for neural induction.

Katherine E Trevers1, Hui-Chun Lu1, Youwen Yang1

  • 1Department of Cell and Developmental Biology, University College London, London, United Kingdom.

Elife
|March 3, 2023
PubMed
Summary
This summary is machine-generated.

Neural induction, the process of forming a nervous system from embryonic ectoderm, is more complex than a single event. This study reveals a detailed gene regulatory network governing neural plate development in chick embryos.

Keywords:
cell fate determinationchickendevelopmental biologyembryonic inductiongene regulatory networkneural inductionneurulationorganizer

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Area of Science:

  • Developmental biology
  • Molecular biology
  • Genomics

Background:

  • Neural induction establishes the vertebrate nervous system.
  • The organizer region of the embryo is crucial for this process.
  • Previous models viewed neural induction as a singular signaling event.

Purpose of the Study:

  • To comprehensively analyze the temporal dynamics of neural induction.
  • To construct a gene regulatory network (GRN) governing this process.
  • To compare responses to an experimental organizer with natural neural plate development.

Main Methods:

  • Chick embryo model system.
  • Transcriptomics and epigenomics for GRN construction.
  • In situ hybridization, single-cell RNA-sequencing, and reporter assays for validation.

Main Results:

  • A GRN of 175 transcriptional regulators and 5614 interactions was generated.
  • The GRN captures temporal dynamics from initial signaling to neural plate marker expression.
  • The response to a grafted organizer mirrors natural neural plate development.

Conclusions:

  • Neural induction involves a complex, temporally dynamic gene regulatory hierarchy.
  • The findings provide a detailed map of early neural development.
  • The study offers insights into conserved regulatory mechanisms across vertebrates.