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Related Experiment Videos

Immunolocalization of Zic2 expression in the developing mouse forebrain.

Lúcia Y Brown1, Andreas H Kottmann, Stephen Brown

  • 1Department of Obstetrics and Gynecology, Columbia University, New York, NY 10032, USA.

Gene Expression Patterns : GEP
|June 12, 2003
PubMed
Summary

Zic2, a key gene in brain development, is crucial for forebrain formation. This study maps Zic2 expression in the developing mouse forebrain and reveals sonic hedgehog

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Area of Science:

  • Developmental biology
  • Genetics
  • Neuroscience

Background:

  • Zic genes are transcription factors homologous to Drosophila odd-paired (opa).
  • Zic2 is essential for forebrain development, with its deficiency causing holoprosencephaly.
  • Previous studies noted Zic2 expression in the dorsal neural tube/spinal cord and hindbrain, but not the developing forebrain.

Purpose of the Study:

  • To describe the expression pattern of Zic2 in the developing mouse forebrain.
  • To investigate the role of sonic hedgehog (Shh) in regulating Zic2 expression.

Main Methods:

  • Utilized a Zic2-specific antiserum for expression analysis.
  • Examined Zic2 expression in wild-type and sonic hedgehog (Shh) null mouse models.

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Main Results:

  • Detailed the expression pattern of Zic2 within the developing mouse forebrain.
  • Observed altered Zic2 expression in Shh null mice, with ventral expansion in some areas and absence in others.
  • Indicated Shh influences Zic2 expression patterns.

Conclusions:

  • Zic2 exhibits a specific expression pattern in the developing forebrain.
  • Sonic hedgehog (Shh) plays a regulatory role in Zic2 expression.
  • Findings contribute to understanding the genetic mechanisms underlying forebrain development and holoprosencephaly.