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Cadherins in Tissue Organization

Cadherins in Tissue Organization

The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...

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Related Experiment Video

Updated: Jul 4, 2026

Microbead Implantation in the Zebrafish Embryo

Microbead Implantation in the Zebrafish Embryo

Published on: July 30, 2015

Cadherin-6 function in zebrafish retinal development.

Qin Liu¹, Richard Londraville, James A Marrs

¹Department of Biology, University of Akron, Akron, OH 44325, USA. qliu@uakron.edu

Developmental Neurobiology

|May 29, 2008

Summary

This summary is machine-generated.

Cadherin-6 is vital for zebrafish retina development. Knockdown disrupts neural differentiation and reduces eye size, highlighting its role in visual system formation.

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Area of Science:

Developmental Biology
Neuroscience
Molecular Biology

Background:

Cadherin cell-adhesion molecules are essential for vertebrate development, particularly the visual system.
Research has primarily focused on type I cadherins, with limited understanding of type II cadherins like cadherin-6 in visual system development.

Purpose of the Study:

To investigate the role of cadherin-6 in the formation and differentiation of the zebrafish retina.
To analyze the impact of cadherin-6 knockdown on retinal neuron development, including retinal ganglion cells, amacrine cells, and photoreceptors.

Main Methods:

Zebrafish embryos were injected with cadherin-6 specific antisense morpholino oligonucleotides to create knockdown models (cdh6 morphants).
Retinal neuron differentiation was assessed using multiple molecular markers.
Analysis included evaluating transcription factor expression, Notch-Delta and ath5 gene expression, cell proliferation, and retinal lamination.

Main Results:

Cadherin-6 knockdown led to significantly reduced expression of key retinal development transcription factors.
Expression patterns of Notch-Delta genes and the proneural gene ath5 were altered in cdh6 morphants.
While retinal lamination was present, cdh6 morphants exhibited smaller eyes due to decreased cell proliferation and severely disrupted differentiation of RGCs, amacrine cells, and photoreceptors, marked by delayed neural differentiation.

Conclusions:

Cadherin-6 plays a critical role in the normal development and cellular differentiation within the zebrafish retina.
These findings underscore the importance of type II cadherins in vertebrate visual system formation.