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Mechanical force-driven cell competition ensures robust morphogen gradient formation.

Kana Aoki1, Tohru Ishitani2

  • 1Department of Homeostatic Regulation, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan.

Seminars in Cell & Developmental Biology
|April 12, 2025
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Summary
This summary is machine-generated.

Mechanical forces correct noisy morphogen gradients through cell competition. This ensures robust tissue patterning by eliminating cells that disrupt signaling pathways, maintaining developmental integrity.

Keywords:
CadherinCell competitionMechanical forceMorphogenPiezoShhWnt

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Area of Science:

  • Developmental Biology
  • Cell Mechanics
  • Tissue Patterning

Background:

  • Morphogen gradients are crucial for cell fate determination and tissue organization.
  • Dynamic morphogenetic movements generate mechanical forces that can interfere with morphogen signaling.
  • The interplay between mechanical forces and morphogen gradients is not well understood.

Purpose of the Study:

  • To investigate how mechanical forces influence morphogen gradients.
  • To elucidate the mechanism by which cell competition ensures robust tissue patterning.
  • To explore the role of mechanical force-mediated cell competition in development.

Main Methods:

  • Utilized Wnt/β-catenin signaling as a model system for morphogen gradient formation.
  • Investigated cadherin-actomyosin interactions to understand intercellular tension gradients (mechano-gradients).
  • Examined the role of Piezo mechanosensitive calcium channels and annexinA1 in cell competition.

Main Results:

  • Noisy Wnt/β-catenin gradients caused by unfit cells deform local mechano-gradients.
  • Fit cells detected mechano-gradient deformation, activating Piezo channels.
  • AnnexinA1 secretion by fit cells eliminated unfit cells, restoring morphogen gradients.

Conclusions:

  • Mechanical force-mediated cell competition is essential for robust morphogen gradient formation.
  • This mechanism ensures accurate tissue patterning despite cellular noise.
  • The findings suggest potential roles in organogenesis and cancer biology.