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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration
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Collective migration under hydrodynamic interactions: a computational approach.

W Marth1, A Voigt2

  • 1Institut für Wissenschaftliches Rechnen , TU Dresden , 01062 Dresden , Germany.

Interface Focus
|October 7, 2016
PubMed
Summary
This summary is machine-generated.

This study models cell motility, revealing that cell collisions trigger collective migration. Cell vortices annihilate upon impact, causing alignment and persistent movement, especially at low Reynolds numbers.

Keywords:
active polar gel theorycollective cell migrationhydrodynamic interactions

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Area of Science:

  • Physics
  • Biophysics
  • Computational Biology

Background:

  • Cell motility is crucial for biological processes but complex to model.
  • Existing models often simplify interactions or omit key physical mechanisms.

Purpose of the Study:

  • To develop a comprehensive physical model for cell motility.
  • To investigate the emergence of collective cell migration from individual cell behaviors and interactions.

Main Methods:

  • A whole-cell physical model incorporating actin polymerization, actin-myosin dynamics, and cell-cell interactions (steric and hydrodynamic).
  • Modeling cells as active polar gels with internal vortices.
  • Simulating inelastic collisions between cells.

Main Results:

  • The model predicts spontaneous collective cell migration driven by cell collisions.
  • Cell collisions lead to vortex annihilation, cell reorientation, and actin filament alignment.
  • This alignment results in persistent, translational collective migration.

Conclusions:

  • The physical model successfully captures the emergence of collective cell migration.
  • Hydrodynamic interactions influence the strength of collective migration, decreasing with higher Reynolds numbers.