Related Experiment Video
Updated: Mar 19, 2026
09:26
Planar Gradient Diffusion System to Investigate Chemotaxis in a 3D Collagen Matrix
Published on: June 12, 2015
9.0K
Computational model of mesenchymal migration in 3D under chemotaxis
F O Ribeiro1,2, M J Gómez-Benito2, J Folgado1
1a IDMEC , Instituto Superior Técnico, Universidade de Lisboa , Lisbon , Portugal.
Summary
This study introduces a computational model for mesenchymal cell migration, simulating fibroblast chemotaxis in 3D matrices. The model accurately predicts cell behavior under varying conditions, offering insights into cell movement regulation.
Area of Science:
- Computational Biology
- Cellular Dynamics
- Biophysics
Background:
- Cell chemotaxis is vital for biological processes, involving complex cellular migration.
- Understanding mesenchymal cell migration is crucial for development and disease research.
Purpose of the Study:
- To develop a novel in silico model for 3D mesenchymal cell migration under chemotaxis.
- To investigate the regulatory roles of chemosensing, protrusion dynamics, and cell-matrix interactions.
Main Methods:
- Developed a computational algorithm modeling three key stages of mesenchymal chemotaxis.
- Simulated fibroblast (cell type) migration in collagen and fibrin matrices under varying PDGF-bb (chemoattractant) concentrations.
- Validated model predictions against in vitro experimental data for cell trajectories and speeds.
Main Results:
- The model accurately predicted fibroblast migration speeds and trajectories in both collagen and fibrin matrices.
- Fibrin matrices showed significantly lower migration speeds due to their stiffness and entanglement.
- Fibroblast migration speed increased with PDGF-bb concentration up to 1 ng/mL, then decreased, indicating an optimal concentration.
Conclusions:
- The developed in silico model effectively simulates mesenchymal cell chemotaxis.
- Matrix properties and chemoattractant concentration critically influence cell migration dynamics.
- Fibrin matrices dampen migration efficiency, while PDGF-bb concentration exhibits a non-linear effect on speed.
Related Concept Videos
01:21Chemotaxis and Direction of Cell Migration
6.1K
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...
6.1K
01:32Cytoskeletal Coordination in Cell Migration
5.7K
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...
5.7K
01:09Cell Migration
19.1K
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.
19.1K
01:19Cell Migration
7.2K
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.
7.2K
01:18Role of Myosin in Cell Migration
3.6K
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....
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....
3.6K
01:27Chemotaxis in E. coli
1.2K
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...
1.2K