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Related Concept Videos

Overview of Cell-Matrix Interactions01:24

Overview of Cell-Matrix Interactions

The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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...
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).
CAM Families
The Integrin family of proteins is primarily  involved in a...
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).
CAM Families
The Integrin family of proteins is primarily  involved in a...
Anchoring Junctions01:03

Anchoring Junctions

Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
Tension Response at Adherens Junctions01:26

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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.
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The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...

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Updated: May 27, 2026

Examining the Dynamics of Cellular Adhesion and Spreading of Epithelial Cells on Fibronectin During Oxidative Stress
10:57

Examining the Dynamics of Cellular Adhesion and Spreading of Epithelial Cells on Fibronectin During Oxidative Stress

Published on: October 13, 2019

Cell-substrate interaction with cell-membrane-stress dependent adhesion.

H Jiang1, B Yang

  • 1Department of Mechanical and Aerospace Engineering, Florida Institute of Technology, Melbourne, FL 32901, USA. hjiang2008@my.fit.edu

Journal of Biomechanics
|November 29, 2011
PubMed
Summary
This summary is machine-generated.

This study models cell-substrate interactions using mechanics, revealing how cell-membrane stress influences adhesion. Substrate stiffness significantly impacts cell adhesion direction, offering insights into cell mechanics.

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Area of Science:

  • Biophysics
  • Cell Mechanics
  • Materials Science

Background:

  • Cell-substrate interaction is crucial for biological processes.
  • Existing models often lack detailed consideration of internal cell stress.
  • Understanding mechanical influences on cell adhesion is vital.

Purpose of the Study:

  • To develop a mechanics model for cell-substrate interaction.
  • To incorporate cell-membrane stress into adhesion laws.
  • To investigate the effect of substrate properties on cell adhesion.

Main Methods:

  • A 2D mechanics model treating cells as shells and substrates as elastic solids.
  • Nonlinear springs model cell-substrate adhesion, incorporating cell-membrane stress.
  • Coupled finite and boundary element methods for numerical solution.

Main Results:

  • Cell-membrane stress influences focal adhesion site density.
  • Substrate stiffness significantly affects cell adhesion behavior and direction.
  • Model predictions align with experimental observations.

Conclusions:

  • The model provides a unified framework for cell mechanics.
  • Cell-membrane stress is a key factor linking cell biology and mechanical stimuli.
  • This approach aids in predicting cell responses to mechanical environments.