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Cell Potential and Free Energy02:58

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Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
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Related Experiment Video

Updated: Jun 16, 2026

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Proposed spring network cell model based on a minimum energy concept.

Yoshihiro Ujihara1, Masanori Nakamura, Hiroshi Miyazaki

  • 1Division of Bioengineering, Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho Toyonaka, Osaka 560-8531, Japan.

Annals of Biomedical Engineering
|January 29, 2010
PubMed
Summary

We created a computational model of cell mechanics, simulating tensile tests. The model shows actin filaments drive cell stiffness and non-linear behavior through passive reorientation during stretching.

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Area of Science:

  • Biophysics
  • Computational Biology
  • Cell Mechanics

Background:

  • Understanding cellular mechanical properties is crucial for cell biology and disease research.
  • Existing models often simplify complex cellular structures and their interactions.

Purpose of the Study:

  • To develop a computational model simulating cellular mechanical behavior under tensile load.
  • To investigate the contributions of cellular components, including actin filaments, to overall cell stiffness.

Main Methods:

  • A mechano-cell model was developed using spring elements to represent the cell membrane, nuclear envelope, and actin filaments.
  • The model incorporates elastic resistance, inter-component interactions, and incompressibility principles.
  • Cell shape and mechanical response were determined using a quasi-static approach minimizing total elastic energy.

Main Results:

  • The simulation accurately reproduced experimentally observed load-deformation curves for cells under tension.
  • The model identified actin filaments as the primary contributors to the stored elastic energy within the cell.
  • Passive reorientation of randomly oriented actin fibers along the stretching direction was observed.

Conclusions:

  • The developed computational model effectively simulates cell mechanics during tensile tests.
  • The non-linear load-deformation behavior of cells is largely attributable to the passive reorientation of actin filaments.
  • This model provides insights into the mechanical role of the cytoskeleton in cellular responses.