A role of glypican4 and wnt5b in chondrocyte stacking underlying craniofacial cartilage morphogenesis

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Updated: Apr 1, 2026

Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage
06:40

Visualization of Chondrocyte Intercalation and Directional Proliferation via Zebrabow Clonal Cell Analysis in the Embryonic Meckel’s Cartilage

Published on: October 21, 2015

9.7K

Barbara E Sisson1, Rodney M Dale2, Stephanie R Mui3

  • 1Northwestern University Feinberg School of Medicine, Department of Pediatrics, Stanley Manne Children's Research Institute, Chicago, IL 60611, USA; Ripon College, Department of Biology, 300 Seward St., Ripon, WI 54971, USA.

Mechanisms of Development
|October 14, 2015
PubMed

Insights

Glypican 4 (Gpc4) and Wnt5b are crucial for craniofacial cartilage development in zebrafish by organizing chondrocytes. Their function is independent of the core Wnt/Planar Cell Polarity pathway.

Area of Science:

  • Developmental Biology
  • Cell Biology
  • Genetics

Background:

  • The Wnt/Planar Cell Polarity (PCP) pathway regulates cell behavior during development.
  • Perturbations in Wnt/PCP signaling are linked to craniofacial formation defects.
  • Zebrafish mutants with altered Wnt/PCP signaling offer insights into craniofacial development.

Purpose of the Study:

  • To investigate the role of Wnt/PCP pathway mutants in craniofacial development.
  • To identify specific mutants that disrupt chondrocyte morphology and head cartilage formation.
  • To elucidate the mechanisms underlying craniofacial defects in these mutants.

Main Methods:

  • Analysis of zebrafish mutants including vangl2, wnt11, scrib, gpc4, and wnt5b.
  • Assessment of craniofacial morphogenesis and chondrocyte organization.
  • Examination of neural crest cell specification, migration, and differentiation.
  • Cell-autonomous requirement analysis for Gpc4 function.

Main Results:

  • vangl2, wnt11, and scrib mutants show craniofacial defects but lack chondrocyte stacking/intercalation issues.
  • gpc4 and wnt5b mutants exhibit impaired chondrocyte organization despite normal neural crest development.
  • Gpc4 acts cell autonomously in chondrocytes; double heterozygotes of gpc4 and wnt5b show enhanced phenotypes.

Conclusions:

  • Gpc4 and Wnt5b are essential for chondrocyte organization in craniofacial cartilage development.
  • This regulation mechanism is distinct from the core Wnt/PCP pathway.
  • A novel pathway involving Wnt5b and Gpc4 regulates chondrocyte behavior independently of canonical PCP signaling.
Keywords:
Growth plateWnt/PCP pathwayknypekpipe tail

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