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Related Experiment Video

Updated: Apr 21, 2026

An Assay for Lateral Line Regeneration in Adult Zebrafish
09:38

An Assay for Lateral Line Regeneration in Adult Zebrafish

Published on: April 8, 2014

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Itch is required for lateral line development in zebrafish.

Annie Angers1, Pierre Drapeau2

  • 1Department of Biological Sciences, University of Montreal, Montreal, Quebec, Canada.

Plos One
|November 5, 2014
PubMed
Summary

Zebrafish lateral line development relies on precise signaling pathways. Itch gene knockdown disrupts these pathways, leading to abnormal development and migration of the posterior lateral line primordium.

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Area of Science:

  • Developmental biology
  • Molecular genetics
  • Zebrafish model organism

Background:

  • The zebrafish posterior lateral line primordium (PLP) forms neuromasts during development.
  • PLP migration and organization involve Fgf, Wnt/β-catenin signaling, and chemokine receptors (cxcr4b, cxcr7b).
  • Itch proteins regulate Wnt and Cxcr4 signaling pathways.

Purpose of the Study:

  • To investigate the role of zebrafish Itch genes (itcha, itchb) in lateral line development.
  • To determine how Itch influences cxcr4b and cxcr7b expression and Wnt signaling during PLP migration.

Main Methods:

  • Identification of two homologous itch genes in zebrafish: itcha and itchb.
  • Morpholino knockdown of itchb to reduce its expression.
  • Analysis of cxcr4b and cxcr7b expression patterns and Wnt signaling activity in itchb knockdown zebrafish.

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Related Experiment Videos

Last Updated: Apr 21, 2026

An Assay for Lateral Line Regeneration in Adult Zebrafish
09:38

An Assay for Lateral Line Regeneration in Adult Zebrafish

Published on: April 8, 2014

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Activity of Posterior Lateral Line Afferent Neurons during Swimming in Zebrafish
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Activity of Posterior Lateral Line Afferent Neurons during Swimming in Zebrafish

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Main Results:

  • Itch knockdown perturbed cxcr4b and cxcr7b expression domains in the PLP.
  • Itch knockdown led to a failure in Wnt signaling downregulation and cxcr4b overexpression.
  • These molecular changes resulted in slowed PLP migration and abnormal lateral line development.

Conclusions:

  • Itch is a crucial regulator of zebrafish posterior lateral line development.
  • Itch controls PLP migration by modulating chemokine receptor expression and Wnt signaling.
  • Disruption of Itch function leads to significant developmental defects in the lateral line system.