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Related Experiment Video

Updated: May 27, 2026

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

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Cell autonomy of DSCAM function in retinal development.

Peter G Fuerst1, Freyja Bruce, Ryan P Rounds

  • 1Department of Biological Sciences and WWAMI Medical Education Program, University of Idaho, Moscow, ID 83844, USA. Fuerst@uidaho.edu

Developmental Biology
|November 9, 2011
PubMed
Summary
This summary is machine-generated.

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Down Syndrome Cell Adhesion Molecule (DSCAM) regulates neural development and cell spacing. DSCAM mutations disrupt neuronal architecture and cell death, with dosage-dependent effects relevant to Down syndrome.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Cell adhesion molecules (CAMs) are crucial for neural development.
  • Down Syndrome Cell Adhesion Molecule (DSCAM) plays a role in neurodevelopment across species.
  • DSCAM exhibits multiple interaction mechanisms, including homophilic and heterophilic binding.

Purpose of the Study:

  • To investigate the role of DSCAM in retinal patterning and neuronal self-avoidance.
  • To develop a conditional Dscam allele for precise genetic manipulation.
  • To elucidate the cell-autonomous and non-cell-autonomous functions of DSCAM.

Main Methods:

  • Development of a conditional Dscam allele in mice.
  • Conditional and inducible deletion of Dscam in specific neuronal populations.

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Last Updated: May 27, 2026

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

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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

Isolation of Retinal Stem Cells from the Mouse Eye
07:22

Isolation of Retinal Stem Cells from the Mouse Eye

Published on: September 11, 2010

  • Analysis of chimeric retinas with mixed wild-type and Dscam mutant cells.
  • Examination of Dscam dosage effects on cell death and spacing.

    • Main Results:

    • Conditional Dscam deletion recapitulated defects in cell spacing, number, and dendrite arborization.
    • DSCAM-mediated cell spacing and neurite arborization occur cell-autonomously via homophilic binding.
    • Laminar stratification defects can arise in a non-cell-autonomous manner.
    • Dscam dosage influences developmental cell death and amacrine cell spacing.

    Conclusions:

    • DSCAM is essential for proper neuronal self-avoidance, cell spacing, and dendritic patterning in the retina.
    • DSCAM functions cell-autonomously in mediating cell body spacing and arborization.
    • Non-cell-autonomous mechanisms contribute to DSCAM's role in laminar organization.
    • Dosage-dependent effects of DSCAM are implicated in developmental cell death and spacing defects, relevant to Down syndrome.