ZFIN ID: ZDB-PUB-180405-9
Gon4l regulates notochord boundary formation and cell polarity underlying axis extension by repressing adhesion genes
Williams, M.L.K., Sawada, A., Budine, T., Yin, C., Gontarz, P., Solnica-Krezel, L.
Date: 2018
Source: Nature communications   9: 1319 (Journal)
Registered Authors: Budine, Terin, Sawada, Atsushi, Solnica-Krezel, Lilianna, Williams, Margot, Yin, Chunyue
Keywords: none
Microarrays: GEO:GSE96575, GEO:GSE96576
MeSH Terms:
  • Animals
  • Body Patterning
  • Cell Adhesion
  • Cell Communication
  • Chromatin/chemistry
  • Crosses, Genetic
  • Erythroid-Specific DNA-Binding Factors/genetics*
  • Erythroid-Specific DNA-Binding Factors/physiology*
  • Gene Expression Regulation, Developmental*
  • Membrane Glycoproteins/physiology
  • Mutation
  • Notochord/physiology
  • Sequence Analysis, RNA
  • Signal Transduction
  • Xenopus
  • Zebrafish
  • Zebrafish Proteins/genetics*
  • Zebrafish Proteins/physiology*
PubMed: 29615614 Full text @ Nat. Commun.
FIGURES
ABSTRACT
Anteroposterior (AP) axis extension during gastrulation requires embryonic patterning and morphogenesis to be spatiotemporally coordinated, but the underlying genetic mechanisms remain poorly understood. Here we define a role for the conserved chromatin factor Gon4l, encoded by ugly duckling (udu), in coordinating tissue patterning and axis extension during zebrafish gastrulation through direct positive and negative regulation of gene expression. Although identified as a recessive enhancer of impaired axis extension in planar cell polarity (PCP) mutants, udu functions in a genetically independent, partially overlapping fashion with PCP signaling to regulate mediolateral cell polarity underlying axis extension in part by promoting notochord boundary formation. Gon4l limits expression of the cell-cell and cell-matrix adhesion molecules EpCAM and Integrin╬▒3b, excesses of which perturb the notochord boundary via tension-dependent and -independent mechanisms, respectively. By promoting formation of this AP-aligned boundary and associated cell polarity, Gon4l cooperates with PCP signaling to coordinate morphogenesis along the AP embryonic axis.
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