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Related Concept Videos

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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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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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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Actin Polymerization and Cell Motility01:13

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Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
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Chemotaxis and Direction of Cell Migration01:21

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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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Cell Polarization by Rho Proteins01:21

Cell Polarization by Rho Proteins

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Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
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Related Experiment Video

Updated: Sep 9, 2025

Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration
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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

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Inferring Nonlinear Dynamics of Cell Migration.

Pedrom Zadeh1, Brian A Camley2

  • 1William H. Miller III Department of Physics & Astronomy, Johns Hopkins University, Baltimore, Maryland 21205, USA.

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Summary
This summary is machine-generated.

Cell motility differs in confined environments. A computational model explains how cell size, stiffness, and substrate geometry influence migration patterns like hopping or bistability.

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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
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Related Experiment Videos

Last Updated: Sep 9, 2025

Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration
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Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
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Area of Science:

  • Cell Biology
  • Biophysics
  • Computational Biology

Background:

  • Eukaryotic cell motility is sensitive to environmental confinement.
  • Cancerous (MDA-MB-231) and healthy (MCF10A) cells exhibit distinct migration behaviors on micropatterns.

Purpose of the Study:

  • To develop a unified computational model explaining diverse cell motility patterns.
  • To investigate how cell properties and substrate geometry influence migration.

Main Methods:

  • Utilized a computational phase field model of crawling cells.
  • Incorporated the assumption that non-adhesive substrate contact inhibits cell front protrusion.
  • Employed data-driven methods to extract cell equations of motion.

Main Results:

  • The model successfully captured persistent hopping in MDA-MB-231 cells and bistability in MCF10A cells on two-state micropatterns.
  • Model predictions indicate larger, softer cells favor persistent hopping, while smaller, stiffer cells exhibit bistability.
  • Protrusion frequency and noise magnitude were identified as key factors in cell migration control.

Conclusions:

  • Simple assumptions about cell geometry sensing can explain varied cell migration behaviors.
  • Data-driven approaches are powerful tools for analyzing experimental and simulation data in cell migration studies.