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Related Concept Videos

Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

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 towards...
Cell Migration01:09

Cell Migration

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.
Cell Migration01:19

Cell Migration

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.
Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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 proteins that...
Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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. It is...
Cell Polarization by Rho Proteins01:21

Cell Polarization by Rho Proteins

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: Jun 21, 2026

Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
07:27

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

Published on: May 13, 2012

Random versus directionally persistent cell migration.

Ryan J Petrie1, Andrew D Doyle, Kenneth M Yamada

  • 1Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland 20892, USA. e-mails: myriam.hemberger@bbsrc.ac.uk

Nature Reviews. Molecular Cell Biology
|July 16, 2009
PubMed
Summary
This summary is machine-generated.

Directional cell migration relies on multiple factors stabilizing cell structures. These include extracellular matrix topography, cell polarity, and signaling pathways converging on Rho GTPases to control cell movement.

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Area of Science:

  • Cell Biology
  • Biophysics

Background:

  • Cell motility is crucial for biological processes.
  • While random cell movement is understood, directional migration regulation remains complex.
  • A unified model for directional cell migration is lacking.

Purpose of the Study:

  • To elucidate the regulatory mechanisms governing directional cell migration.
  • To identify key factors involved in stabilizing lamellipodia during directed movement.

Main Methods:

  • Literature review and synthesis of existing research on cell migration.
  • Analysis of signaling pathways and molecular players involved in cell motility.

Main Results:

  • Directional migration involves intricate regulation at multiple steps.
  • Factors like extracellular matrix (ECM) topography, cell polarity, and receptor signaling are critical.
  • Integrin dynamics, co-receptors, and actomyosin contraction converge on Rho GTPases.
  • Rho GTPases regulate lamellipodial protrusions essential for directed movement.

Conclusions:

  • Complex interplay of factors governs directional cell migration.
  • Rho GTPases are central regulators of lamellipodia stability and cell directionality.
  • Understanding these mechanisms is key to comprehending cell motility.