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Dissection of the Drosophila Pupal Retina for Immunohistochemistry, Western Analysis, and RNA Isolation
08:47

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Published on: March 15, 2019

Retinal patterning by Pax6-dependent cell adhesion molecules.

Elisabeth Rungger-Brändle1, Jürgen A Ripperger, Kurt Steiner

  • 1Cell Biology Laboratory, University Eye Clinic, HUG, Rue Alcide Jentzer, Geneva, Switzerland.

Developmental Neurobiology
|June 18, 2010
PubMed
Summary
This summary is machine-generated.

Pax6 is crucial for central nervous system and retina development. This study shows Pax6 directly regulates cell adhesion molecules, essential for proper eye patterning and retinal lamination.

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Live-imaging of the Drosophila Pupal Eye
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Last Updated: Jun 12, 2026

Dissection of the Drosophila Pupal Retina for Immunohistochemistry, Western Analysis, and RNA Isolation
08:47

Dissection of the Drosophila Pupal Retina for Immunohistochemistry, Western Analysis, and RNA Isolation

Published on: March 15, 2019

Live-imaging of the Drosophila Pupal Eye
09:54

Live-imaging of the Drosophila Pupal Eye

Published on: January 12, 2015

Area of Science:

  • Developmental Biology
  • Neuroscience
  • Genetics

Background:

  • Pax6 is known to be involved in central nervous system and retina patterning.
  • Direct evidence linking Pax6 to specific cell adhesion molecules in these processes was lacking.

Purpose of the Study:

  • To provide direct evidence for Pax6's role in regulating cell adhesion molecules.
  • To investigate the mechanism by which Pax6 influences retinal patterning through these molecules.

Main Methods:

  • Morpholino antisense knockdown of Pax6, maternal N-cadherin (mNcad), N-cadherin (Ncad), and neural cell adhesion molecule (NCAM) in Xenopus embryos.
  • Analysis of phenotypic similarities and differences.
  • Quantitative assessment of mRNA levels.
  • Pax6 overexpression for rescue experiments.
  • Bioinformatic analysis of gene promoters for Pax6 binding sites.
  • Chromatin immunoprecipitation assays.

Main Results:

  • Knockdown of Pax6, mNcad, Ncad, and NCAM resulted in similar phenotypes, including reduced eye formation and disorganized retinal lamination.
  • Pax6 knockdown led to decreased mRNA levels of these cell adhesion molecules.
  • Overexpression of Pax6 rescued the Pax6 knockdown phenotype and restored target gene expression.
  • Pax6 was shown to directly bind to the promoter regions of genes encoding these cell adhesion molecules.

Conclusions:

  • Several cell adhesion molecules are direct target genes of Pax6.
  • These Pax6-regulated cell adhesion molecules play a cooperative role in retinal patterning.