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Related Concept Videos

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...
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

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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.
Mechanism of Lamellipodia Formation01:31

Mechanism of Lamellipodia Formation

Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
Role of Myosin in Cell Migration01:18

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Related Experiment Video

Updated: Jun 4, 2026

Single Cell Durotaxis Assay for Assessing Mechanical Control of Cellular Movement and Related Signaling Events
08:30

Single Cell Durotaxis Assay for Assessing Mechanical Control of Cellular Movement and Related Signaling Events

Published on: August 27, 2019

Adhesion dynamics and durotaxis in migrating cells.

Ben Harland1, Sam Walcott, Sean X Sun

  • 1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.

Physical Biology
|February 9, 2011
PubMed
Summary
This summary is machine-generated.

Cellular durotaxis, or directed migration towards stiffer environments, is explained by a simple cell model. This model, considering F-actin bundles and adhesions, predicts optimal migration velocity at intermediate stiffness, offering insights into mechanosensation.

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Related Experiment Videos

Last Updated: Jun 4, 2026

Single Cell Durotaxis Assay for Assessing Mechanical Control of Cellular Movement and Related Signaling Events
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Published on: August 27, 2019

A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro
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Assessment of Dictyostelium discoideum Response to Acute Mechanical Stimulation
10:40

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Area of Science:

  • Cell Biology
  • Biophysics
  • Mechanobiology

Background:

  • Cells respond to mechanical cues from their environment.
  • Durotaxis, the directed migration of cells towards stiffer regions, is a key cellular response.
  • Mechanical signals influence cell differentiation, development, and cancer metastasis.

Purpose of the Study:

  • To introduce a simple biophysical model of a cell to explain durotaxis.
  • To investigate the mechanical basis of cell mechanosensation and durotaxis.
  • To identify the physical factors underlying stiffness-dependent cellular adaptations.

Main Methods:

  • Developed a theoretical model of a cell based on F-actin bundle contraction and adhesion dynamics.
  • Simulated cell behavior on a flexible substrate with a linear stiffness gradient.
  • Analyzed the relationship between cell migration and substrate stiffness.

Main Results:

  • The model successfully exhibited durotaxis on a stiffness gradient.
  • Predicted that cell velocity peaks at an intermediate substrate stiffness.
  • Demonstrated that stress fiber formation and adhesion sliding are critical for durotaxis.

Conclusions:

  • Durotaxis and stiffness-dependent cellular adaptations (mechanosensation) are mechanistically linked.
  • A simple model incorporating F-actin bundles and adhesions can explain durotaxis.
  • The findings provide a physical basis for understanding cell mechanosensation and migration.