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Gene expression profiling during the embryonic development of mouse brain using an oligonucleotide-based microarray

Tohru Matsuki1, Gen Hori, Teiichi Furuichi

  • 1Laboratory for Molecular Neurogenesis, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. matsuki@ninds.nih.gov

Brain Research. Molecular Brain Research
|May 17, 2005
PubMed
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Researchers analyzed gene expression in developing mouse brains, finding significant changes in over 1400 genes. A novel gene, Ebr kinase, was identified, highlighting key genetic factors in neural development.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genomics

Background:

  • Understanding the genetic regulation of brain development is crucial for identifying mechanisms underlying neural function and dysfunction.
  • Gene expression profiling provides a powerful tool to capture dynamic changes during critical developmental periods.

Purpose of the Study:

  • To comprehensively analyze gene expression patterns during mouse brain development.
  • To identify novel genes and pathways involved in neural development.
  • To elucidate the genetic underpinnings of cellular events in the developing brain.

Main Methods:

  • Utilized GeneChip microarray technology to analyze gene expression profiles.
  • Examined samples from embryonic day 12, 15, 18, and postnatal day 0 mouse brains.

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  • Applied differential expression analysis and gene clustering based on function and temporal patterns.

    • Main Results:

    • Identified significant differential expression in 1413 out of 12,422 genes (11.4%).
    • Focused analysis on 397 genes known for neural development and function.
    • Discovered a novel gene encoding Ebr kinase, a putative protein kinase with differential expression in the developing brain.

    Conclusions:

    • The study reveals a substantial portion of the genome is dynamically regulated during mouse brain development.
    • Gene expression patterns provide insights into the genetic basis of neural development.
    • The identification of Ebr kinase suggests its potential role in brain development and function.