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Related Experiment Videos

Generative rules for the morphogenesis of epithelial tubes.

L V Beloussov1, A V Lakirev

  • 1Department of Biology, Faculty of Biology, Moscow State University.

Journal of Theoretical Biology
|October 21, 1991
PubMed
Summary

This study introduces a finite element model of epithelial morphogenesis, revealing how cell pressure and geometry influence tubular shapes. The model generates realistic structures without pre-existing cell differences, aiding in understanding developmental biology.

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Area of Science:

  • Developmental Biology
  • Computational Biology
  • Cell Biology

Background:

  • Epithelial morphogenesis involves complex shape changes in tubular structures.
  • Cell-cell interactions, particularly lateral pressure, are hypothesized to drive these changes.
  • Understanding the biophysical mechanisms is crucial for developmental biology.

Purpose of the Study:

  • To develop a finite element model simulating tubular epithelial morphogenesis.
  • To investigate the influence of cell pressure, geometry, and material properties on shape.
  • To explore how these factors contribute to realistic epithelial structures.

Main Methods:

  • A finite element model was developed based on lateral pressure between epithelial cells.
  • The model incorporated initial geometry, curvature-dependent radial pressure, and visco-elastic cell linkages.

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  • Simulations explored various temporal pressure regimes and modeling durations.

    • Main Results:

    • The model successfully generated biologically realistic tubular epithelial shapes, predominantly a "trefoiled" archetype.
    • Shaping was significantly influenced by visco-elastic coefficients, temporal pressure regimes, and overall modeling duration.
    • Complex shapes emerged without assuming initial regional cell differences.

    Conclusions:

    • Finite element modeling of cell pressure can accurately simulate epithelial morphogenesis.
    • Biophysical factors like cell-cell interactions and material properties are key drivers of shape.
    • This model provides insights into genetic and epigenetic regulation of tissue development.