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Related Concept Videos

Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
Contact-dependent Signaling01:19

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
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Cell Adhesion in Plants01:14

Cell Adhesion in Plants

Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
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Cell Adhesion Molecules - Types and Functions01:20

Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
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Overview of Cell Signaling01:23

Overview of Cell Signaling

Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
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Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

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Related Experiment Video

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A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro
09:50

A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro

Published on: August 27, 2015

Cell-cell mechanical communication through compliant substrates.

Cynthia A Reinhart-King1, Micah Dembo, Daniel A Hammer

  • 1Department of Biomedical Engineering, Cornell University, Ithaca, New York 14853, USA.

Biophysical Journal
|September 9, 2008
PubMed
Summary
This summary is machine-generated.

Cells can sense and respond to mechanical cues from neighboring cells through matrix mechanics. This matrix-dependent communication influences cell migration and promotes tissue formation by facilitating cell-cell contacts.

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

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Cell behavior and migration are influenced by the mechanical properties of the extracellular matrix.
  • The role of matrix mechanics in stable cell-cell contact and tissue formation remains largely unexplored.

Purpose of the Study:

  • To investigate how matrix mechanics and cell-generated forces contribute to cell-cell contact and tissue formation.
  • To determine if cells can detect and respond to mechanical signals from neighboring cells via the matrix.

Main Methods:

  • Utilized matrices with varying stiffness (elasticity).
  • Measured endothelial cell migration and traction stresses.
  • Analyzed the response of paired endothelial cells compared to individual cells.

Main Results:

  • Endothelial cell migration was hindered on softer gels (elasticity < 5500 Pa), suggesting mechanical sensing of neighboring cells.
  • Cells demonstrated the ability to detect and respond to substrate strains induced by neighboring cells.
  • Matrix stiffness significantly influenced this cell-cell mechanical communication.

Conclusions:

  • Matrix mechanics can promote tissue formation by modulating cell-cell interactions and contact.
  • Cells possess the capability for mechanical communication through their surrounding matrix.
  • Findings are crucial for understanding cell adhesion in tissue development, disease, and biomaterial design.