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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...
Cell Migration01:09

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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.
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.
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.
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...

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Measurement of Cellular Chemotaxis with ECIS/Taxis
11:37

Measurement of Cellular Chemotaxis with ECIS/Taxis

Published on: April 1, 2012

A computational model of chemotaxis-based cell aggregation.

Manolya Eyiyurekli1, Prakash Manley, Peter I Lelkes

  • 1Drexel University, Department of Computer Science, Philadelphia, PA 19104, United States. me52@cs.drexel.edu

Bio Systems
|July 8, 2008
PubMed
Summary

This study introduces a computational model simulating 2D cell aggregation, accurately replicating live cell behaviors. The model

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Area of Science:

  • Computational Biology
  • Cellular Dynamics
  • Biophysics

Background:

  • Cell aggregation is crucial for development and tissue formation.
  • Understanding the complex behaviors governing cell aggregation is essential.
  • Existing models may not fully capture the dynamic interplay of cellular actions.

Purpose of the Study:

  • To develop and validate a computational model of 2D cell aggregation.
  • To accurately simulate key cell behaviors including movement, division, and attachment.
  • To compare in silico simulations with in vitro experimental data for model refinement.

Main Methods:

  • Developed a discrete, agent-based computational model with parameterized virtual cells.
  • Incorporated cell behaviors: chemoattractant sensing/emission, movement, attachment, division, aging, and death.
  • Validated the model against 24-hour in vitro aggregation experiments using PC12 pheochromocytoma cells.
  • Utilized Earth Mover's Distance (EMD) for quantitative comparison of aggregate size distributions.

Main Results:

  • The computational model successfully captured essential cell behaviors for 2D aggregation.
  • Simulated aggregation outcomes closely matched experimental data from PC12 cells after iterative parameter tuning.
  • The model demonstrated the ability to recreate large-scale aggregation patterns observed in live cell experiments.

Conclusions:

  • The developed computational model provides a robust platform for studying 2D cell aggregation dynamics.
  • The model's validation against experimental data confirms its predictive power.
  • This in silico approach facilitates a deeper understanding of the mechanisms driving cell aggregation.