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Related Concept Videos

Cell Migration01:09

Cell Migration

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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 Migration01:19

Cell Migration

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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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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
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Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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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.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
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Mechanism of Lamellipodia Formation01:31

Mechanism of Lamellipodia Formation

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Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
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Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

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Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration
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Crawling and Gliding: A Computational Model for Shape-Driven Cell Migration.

Ioana Niculescu1, Johannes Textor1, Rob J de Boer1

  • 1Theoretical Biology & Bioinformatics, Utrecht University, The Netherlands.

Plos Computational Biology
|October 22, 2015
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Summary
This summary is machine-generated.

This study introduces a new computational model for cell migration, simulating realistic cell shapes and movements. The model efficiently models complex tissue dynamics, aiding research in cell behavior and tissue engineering.

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Area of Science:

  • Computational biology
  • Biophysics
  • Cellular dynamics

Background:

  • Cell migration is crucial for development and disease, yet modeling its complexity is computationally intensive.
  • Existing models struggle to capture diverse cell morphologies and behaviors in tissue environments.

Purpose of the Study:

  • To develop a computationally efficient model for simulating realistic cell migration and tissue dynamics.
  • To incorporate an actin-inspired feedback mechanism into the Cellular Potts Model for enhanced cell behavior simulation.

Main Methods:

  • Extension of the Cellular Potts Model (CPM) with a novel actin-based feedback mechanism.
  • Phenomenological modeling approach to generate realistic cell protrusions and morphologies.
  • Simulation of various migration patterns including random, directed, squeezing, and collective migration.

Main Results:

  • The model successfully generates amoeboid and keratocyte-like cell behaviors with realistic crawling and gliding.
  • Simulated cells exhibit diverse behaviors like squeezing through crowded tissues and collective migration.
  • The model's computational efficiency enables the study of large, dense, and heterogeneous tissues.

Conclusions:

  • The developed Cellular Potts Model extension provides a powerful and efficient tool for studying complex cell migration in tissues.
  • This model facilitates research into tissue development, wound healing, and cancer metastasis by simulating realistic cellular behaviors.