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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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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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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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Related Experiment Video

Updated: Dec 10, 2025

Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation
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All Roads Lead to Directional Cell Migration.

Adam Shellard1, Roberto Mayor1

  • 1Department of Cell and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK.

Trends in Cell Biology
|September 3, 2020
PubMed
Summary
This summary is machine-generated.

External signals like chemical, mechanical, or electrical cues guide directional cell migration. Despite diverse inputs, cells utilize common molecular mechanisms, primarily small GTPases and the actin cytoskeleton, suggesting unified physical principles govern cell movement.

Keywords:
chemotaxisdurotaxisgalvanotaxisgradientshaptotaxismigration

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Area of Science:

  • Cell Biology
  • Biophysics
  • Mechanobiology

Background:

  • Directional cell migration is crucial for development and disease.
  • External cues (chemical, mechanical, electrical) guide cell movement.
  • Understanding how diverse signals direct migration is essential.

Purpose of the Study:

  • Compare how different stimuli direct cell movement.
  • Investigate the underlying molecular mechanisms of directional cell migration.
  • Explore how cells respond to multiple simultaneous cues.

Main Methods:

  • Review of existing literature on cell migration.
  • Comparative analysis of different external stimuli (gradients).
  • Examination of downstream effector pathways.

Main Results:

  • Different external signals are often spatially distributed as gradients.
  • Common downstream effectors, including small GTPases and the actin cytoskeleton, are regulated by diverse cues.
  • Suggests convergence of signaling pathways.

Conclusions:

  • Cell migration mechanisms are likely closely related across different external signals.
  • Cell migration operates via common physical principles, regardless of the input cue.
  • Provides insights into complex in vivo cell navigation.