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Related Concept Videos

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.
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,...
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...
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...
Chemotaxis in E. coli01:27

Chemotaxis in E. coli

Chemotaxis in Escherichia coli is a sensory-driven motility mechanism that enables bacteria to navigate chemical gradients, moving toward beneficial environments while avoiding harmful conditions. This process relies on a signal transduction system integrating external chemical cues with flagellar motor control.Chemoreceptors and Signal DetectionE. coli detects chemical gradients through methyl-accepting chemotaxis proteins (MCPs), which are membrane-bound chemoreceptors that sense attractants...

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Related Experiment Video

Updated: Jul 14, 2026

Imaging G-protein Coupled Receptor (GPCR)-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum
09:40

Imaging G-protein Coupled Receptor (GPCR)-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum

Published on: September 20, 2011

Chemotaxis: signalling the way forward.

Peter J M Van Haastert1, Peter N Devreotes

  • 1Department of Biochemistry, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands. haastert@chem.rug.nl

Nature Reviews. Molecular Cell Biology
|September 16, 2004
PubMed
Summary

Human neutrophils and amoebae migrate using dynamic cell extensions. Signaling molecules guide these extensions during directed cell migration, revealing complex cellular communication networks.

Area of Science:

  • Cell biology
  • Biochemistry
  • Biophysics

Background:

  • Cells like neutrophils and amoebae exhibit dynamic cytoplasmic extensions during movement.
  • Directed cell migration, or chemotaxis, involves pseudopodia formation at the leading edge in response to signaling molecules.

Purpose of the Study:

  • To elucidate the intricate signaling networks mediating directed cell migration.
  • To understand the mechanisms of signaling molecule localization within migrating cells.

Main Methods:

  • Observation of neutrophil and Dictyostelium discoideum locomotion.
  • Analysis of actin and myosin dynamics during cell movement.
  • Investigation of signaling molecule involvement in chemotaxis.

Main Results:

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Imaging G Protein-coupled Receptor-mediated Chemotaxis and its Signaling Events in Neutrophil-like HL60 Cells
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Imaging G Protein-coupled Receptor-mediated Chemotaxis and its Signaling Events in Neutrophil-like HL60 Cells

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Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation
10:40

Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation

Published on: November 9, 2017

Related Experiment Videos

Last Updated: Jul 14, 2026

Imaging G-protein Coupled Receptor (GPCR)-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum
09:40

Imaging G-protein Coupled Receptor (GPCR)-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum

Published on: September 20, 2011

Imaging G Protein-coupled Receptor-mediated Chemotaxis and its Signaling Events in Neutrophil-like HL60 Cells
08:24

Imaging G Protein-coupled Receptor-mediated Chemotaxis and its Signaling Events in Neutrophil-like HL60 Cells

Published on: September 14, 2016

Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation
10:40

Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation

Published on: November 9, 2017

  • Identified dynamic extension and retraction of cytoplasmic processes during random and directed migration.
  • Demonstrated pseudopodia formation at the leading edge is crucial for chemotaxis.
  • Highlighted the role of actin and myosin in enabling directed cell movement.

Conclusions:

  • Complex signaling networks orchestrate directed cell migration.
  • Understanding signaling molecule localization is key to deciphering cell movement mechanisms.