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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...
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...
Flagella and Motility in Bacteria01:18

Flagella and Motility in Bacteria

Flagella are specialized, thread-like structures that extend from a bacteria's cell envelope. They play a crucial role in motility and chemotaxis. Their structural organization and functioning exemplify sophisticated biological engineering, enabling bacterial survival and adaptability in diverse environments.Structure of the FlagellumA bacterial flagellum consists of three key components: the filament, the hook, and basal body. The filament, a long, helical structure composed of repeating...
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.
Molecular Models02:00

Molecular Models

Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
Actin Polymerization and Cell Motility01:13

Actin Polymerization and Cell Motility

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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Related Experiment Video

Updated: Jul 8, 2026

C. elegans Chemotaxis Assay
06:28

C. elegans Chemotaxis Assay

Published on: April 27, 2013

Navigating through models of chemotaxis.

Pablo A Iglesias1, Peter N Devreotes

  • 1Department of Electrical & Computer Engineering, Johns Hopkins University, Baltimore, MD 21218, USA. pi@jhu.edu

Current Opinion in Cell Biology
|January 22, 2008
PubMed
Summary

Eukaryotic cell chemotaxis involves motility, polarization, and gradient sensing. Current models address only one aspect, highlighting the need for an integrated approach to fully understand cell movement.

Area of Science:

  • Cell Biology
  • Biophysics
  • Mathematical Biology

Background:

  • Chemotaxis is crucial for eukaryotic cell functions.
  • It involves motility, polarization, and gradient sensing.
  • Existing mathematical models often isolate these processes.

Purpose of the Study:

  • To review current mathematical models of chemotaxis.
  • To analyze the strengths and weaknesses of existing models.
  • To advocate for the development of integrated chemotaxis models.

Main Methods:

  • Literature review of mathematical models of chemotaxis.
  • Comparative analysis of model strengths and limitations.
  • Synthesis of findings to identify research gaps.

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

Published on: September 14, 2016

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior
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Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

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Related Experiment Videos

Last Updated: Jul 8, 2026

C. elegans Chemotaxis Assay
06:28

C. elegans Chemotaxis Assay

Published on: April 27, 2013

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

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior
10:07

Generating Controlled, Dynamic Chemical Landscapes to Study Microbial Behavior

Published on: January 31, 2020

Main Results:

  • Models effectively describe individual chemotaxis processes (motility, polarization, gradient sensing).
  • No single model comprehensively explains the integrated nature of chemotaxis.
  • Significant limitations exist in current models' ability to capture the interplay between processes.

Conclusions:

  • A unified mathematical framework is needed to model eukaryotic cell chemotaxis.
  • Integrated models will provide deeper insights into cell migration dynamics.
  • Future research should focus on developing holistic models of chemotaxis.