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Implementation of actin polymerization and depolymerization in a two-dimensional cell migration model and its
1Department of Mathematics, University of Akron, Akron, OH 44325, USA.
Journal of Theoretical Biology
|November 7, 2024
Summary
This study introduces a 2D model of cell migration using actin dynamics. The model reveals how monomeric actin (G-actin) influences cell shape and movement, improving our understanding of this vital biological process.
Area of Science:
- Biophysics
- Cell Biology
- Computational Biology
Background:
- Cell migration is crucial for healing, immunity, and metastasis.
- Mathematical models help understand complex cell migration dynamics.
- Previous models simplified actin dynamics.
Purpose of the Study:
- Develop a 2D immersed boundary model for mammalian cell migration.
- Incorporate filamentous actin (F-actin) and monomeric actin (G-actin) dynamics.
- Investigate the impact of G-actin on cell velocity and morphology.
Main Methods:
- Developed a two-dimensional immersed boundary model.
- Explicitly modeled actin polymerization and depolymerization (F-actin and G-actin).
- Compared 1D and 2D model predictions for cell migration.
Main Results:
- The 2D model captures cell shape evolution and transverse actin variations.
- G-actin significantly influences cell morphology.
- Actin velocity direction impacts cell elongation and spreading.
Conclusions:
- The 2D model provides a more comprehensive view of cell migration than 1D models.
- G-actin plays a critical role in determining cell shape.
- This work links microscopic actin dynamics to macroscopic cell behavior.
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