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Related Concept Videos

Integrins01:10

Integrins

Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM.
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Activation of Integrins01:15

Activation of Integrins

Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling."
In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding events provide an effective stimulus.
Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...
Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...

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Related Experiment Video

Updated: May 10, 2026

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
07:55

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads

Published on: March 8, 2017

Integrins in mechanotransduction.

Tyler D Ross1, Brian G Coon, Sanguk Yun

  • 1Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, United States.

Current Opinion in Cell Biology
|June 26, 2013
PubMed
Summary

Cellular forces are crucial for development and disease. Integrin-mediated adhesions translate these forces to regulate cell signaling pathways, with recent work revealing key molecular mechanisms.

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Last Updated: May 10, 2026

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
07:55

Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads

Published on: March 8, 2017

Ex Vivo Analysis of Mechanically Activated Ca2+ Transients in Urothelial Cells
05:35

Ex Vivo Analysis of Mechanically Activated Ca2+ Transients in Urothelial Cells

Published on: September 28, 2022

Tension Gauge Tether Probes for Quantifying Growth Factor Mediated Integrin Mechanics and Adhesion
09:56

Tension Gauge Tether Probes for Quantifying Growth Factor Mediated Integrin Mechanics and Adhesion

Published on: February 11, 2022

Area of Science:

  • Cell Biology
  • Biophysics
  • Molecular Biology

Background:

  • Forces significantly influence cellular functions, impacting development, physiology, and disease.
  • Integrin-mediated adhesions are critical for force transmission between the extracellular matrix and the actin cytoskeleton.
  • Understanding how cells sense and respond to mechanical forces is vital for comprehending cellular regulation.

Purpose of the Study:

  • To summarize the effects of physical forces on cells, tissues, and organs.
  • To discuss recent advancements in understanding the molecular mechanisms of force transduction through integrin-mediated adhesions.
  • To highlight how these adhesions regulate cellular signaling pathways in response to mechanical stimuli.

Main Methods:

  • Literature review of recent research on cellular mechanotransduction.
  • Analysis of molecular mechanisms governing integrin-mediated adhesions.
  • Synthesis of findings on force effects across different biological scales (molecular, cellular, tissue, organ).

Main Results:

  • Physical forces regulate critical cellular events throughout development and in disease.
  • Integrin-mediated adhesions act as key mechanotransducers, linking external forces to internal cellular responses.
  • Recent studies have elucidated specific molecular players and pathways involved in force sensing and signaling at adhesions.

Conclusions:

  • Cellular responses to mechanical forces are fundamental to biological processes.
  • Integrin-mediated adhesions provide a crucial interface for cells to perceive and respond to their mechanical environment.
  • Further research into these molecular mechanisms holds promise for understanding and treating diseases involving altered cellular mechanics.