Polarity-driven three-dimensional spontaneous rotation of a cell doublet - Archive ouverte HAL Access content directly
Preprints, Working Papers, ... Year : 2022

Polarity-driven three-dimensional spontaneous rotation of a cell doublet

Linjie Lu
  • Function : Author
Tristan Guyomar
  • Function : Author
Quentin Vagne
  • Function : Author
Rémi Berthoz
  • Function : Author
Alejandro Torres-Sánchez
  • Function : Author
Michèle Lieb
  • Function : Author
Cecilie Martin-Lemaitre
  • Function : Author
Kobus van Unen
  • Function : Author
Alf Honigmann
  • Function : Author
Olivier Pertz
  • Function : Author
Guillaume Salbreux

Abstract

Abstract Cell mechanical interactions play a fundamental role in the self-organisation of organisms. How these interactions drive coordinated cell movement in three-dimensions remains unclear. Here we report that cell doublets embedded in a 3D extracellular matrix undergo spontaneous rotations and we investigate the rotation mechanism using live cell imaging, quantitative measurements, mechanical perturbations, and theory. We find that rotation is driven by a polarized distribution of myosin within cell cortices. The mismatched orientation of this polarized distribution breaks the doublet mirror symmetry. In addition, cells adhere at their interface through adherens junctions and with the extracellular matrix through focal contacts near myosin clusters. Using a physical theory describing the doublet as two interacting active surfaces, we find that rotation is driven by myosin-generated gradients of active tension, whose profiles are dictated by interacting cell polarity axes. We show that interface three-dimensional shapes can be understood from the Curie principle: shapes symmetries are related to broken symmetries of myosin distribution in cortices. To test for the rotation mechanism, we suppress myosin clusters using laser ablation and we generate new myosin clusters by optogenetics. Our work clarifies how polarity-oriented active mechanical forces drive collective cell motion in three dimensions.

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Dates and versions

hal-04285909 , version 1 (14-11-2023)

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Linjie Lu, Tristan Guyomar, Quentin Vagne, Rémi Berthoz, Alejandro Torres-Sánchez, et al.. Polarity-driven three-dimensional spontaneous rotation of a cell doublet. 2023. ⟨hal-04285909⟩
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