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Vertex remodeling during epithelial morphogenesis.

Kaoru Sugimura1, Tetsuhisa Otani2

  • 1Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan; Universal Biology Institute, The University of Tokyo, Tokyo, Japan; Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.

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|September 27, 2024
PubMed
Summary
This summary is machine-generated.

Epithelial cells remodel tricellular contacts (vertices) by reorganizing adhesion and the cytoskeleton. New modeling and imaging reveal the active role of vertices in epithelial morphogenesis.

Keywords:
Cell adhesionEpitheliumMechanicsModelingTricellular junction

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Area of Science:

  • Cell Biology
  • Biophysics
  • Developmental Biology

Background:

  • Epithelial cells form tissues through intercellular junctions, including bicellular junctions and tricellular contacts (vertices).
  • Epithelial morphogenesis, the process of tissue shaping, involves cell rearrangement and remodeling of these junctions.
  • While bicellular junction mechanics are well-studied, vertex remodeling mechanisms are a recent focus.

Purpose of the Study:

  • To review recent advancements in understanding vertex remodeling during epithelial morphogenesis.
  • To explore how cells reorganize adhesion and cytoskeleton to manage cell vertices.
  • To discuss the balance between vertex flexibility and stability, and introduce new analytical frameworks.

Main Methods:

  • Literature review of recent research on epithelial morphogenesis and cell vertex dynamics.
  • Discussion of cellular mechanisms involving cell adhesion and cytoskeletal reorganization.
  • Introduction of new computational modeling frameworks for vertex mechanics analysis.

Main Results:

  • Cells actively reorganize adhesion and cytoskeleton to displace and resolve tricellular vertices.
  • Cells maintain an optimal balance between structural flexibility and stability at vertices.
  • Integration of live imaging and modeling provides new insights into vertex roles.

Conclusions:

  • Vertex remodeling is crucial for epithelial morphogenesis, involving active cellular processes.
  • Advanced imaging and modeling are key to deciphering the mechanics of cell vertices.
  • Understanding vertex dynamics offers new perspectives on tissue development and stability.