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Surface viscoelastic effects in cell cleavage.

D Zinemanas1, A Nir

  • 1Department of Chemical Engineering, Israel Institute of Technology, Haifa.

Journal of Biomechanics
|January 1, 1990
PubMed
Summary
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Passive surface traction significantly influences cell cleavage during cytokinesis. While rheological models vary, contractile filament interactions are the primary drivers of overall cell deformation.

Area of Science:

  • Cell biology
  • Biophysics
  • Biomechanics

Background:

  • Cell division (cytokinesis) involves complex physical forces.
  • The role of passive surface traction in cell cleavage is not fully understood.
  • Hydrodynamic models are crucial for studying cellular processes.

Purpose of the Study:

  • To investigate the impact of passive surface traction on cell cleavage.
  • To model surface tensions arising from cortical deformation using different rheological behaviors.
  • To analyze the influence of rheological properties on local and overall cell deformations.

Main Methods:

  • Incorporation of passive surface traction into the Zinemanas and Nir cytokinesis hydrodynamic model.
  • Modeling cortical deformation using Mooney-Rivlin, STZC, and viscoelastic materials.

Related Experiment Videos

  • Computational analysis of surface deformations and forces.

    • Main Results:

    • Passive surface tensions significantly affect local surface deformations and modulate surface forces.
    • Different rheological models showed limited impact on overall cell deformations.
    • Contractile filament interactions were identified as the dominant factor in overall deformations.

    Conclusions:

    • Passive surface traction plays a key role in the mechanics of cell cleavage.
    • Rheological properties of the cell cortex influence local mechanics but not global shape changes.
    • Contractile forces are the primary determinants of cell deformation during cytokinesis.