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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
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Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration
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Modeling cell migration regulated by cell extracellular-matrix micromechanical coupling.

Yu Zheng1, Hanqing Nan2, Yanping Liu3

  • 1Department of Physics, Arizona State University, Tempe, Arizona 85287, USA.

Physical Review. E
|November 28, 2019
PubMed
Summary
This summary is machine-generated.

This study models cell migration by coupling cell mechanics with the fibrous extracellular matrix (ECM). The computational model reveals how cell-ECM interactions drive migration behaviors like durotaxis and contact guidance, influencing collective cell dynamics.

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Area of Science:

  • Biophysics
  • Computational Biology
  • Cell Biology

Background:

  • Cell migration through the extracellular matrix (ECM) is vital for tissue repair and disease progression.
  • Cellular forces transmitted to the ECM influence cell movement and communication.
  • ECM properties like stiffness and structure guide cell behavior.

Purpose of the Study:

  • To develop a computational model of cell migration incorporating cell-ECM micromechanical coupling.
  • To investigate how cellular forces and ECM remodeling affect single-cell and collective migration.
  • To understand emergent behaviors like durotaxis and contact guidance.

Main Methods:

  • Developed a 2D computational model of cell migration.
  • Incorporated focal adhesion dynamics, actomyosin contraction, and ECM force transmission.
  • Simulated cell-ECM interactions and ECM remodeling.
  • Validated model with MCF-10A breast cancer cell migration on collagen gels.

Main Results:

  • The model accurately reproduced single-cell migration dynamics, including durotaxis and contact guidance.
  • Predicted correlated multicellular migration driven by ECM-mediated mechanical coupling.
  • Experimental validation confirmed the model's predictions of collective cell behavior.

Conclusions:

  • The developed computational model effectively captures cell-ECM micromechanical interactions.
  • This model provides insights into emergent collective cell migration dynamics.
  • The tool can aid in designing microenvironments to control cellular self-organization and behavior.