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Related Concept Videos

The Extracellular Matrix01:29

The Extracellular Matrix

Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
The Extracellular Matrix01:42

The Extracellular Matrix

In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.Composition of the Extracellular MatrixThe extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse molecules.
Extracellular Matrix01:26

Extracellular Matrix

Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
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...
Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...

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Related Experiment Video

Updated: Jun 6, 2026

Fabrication of Extracellular Matrix-derived Foams and Microcarriers as Tissue-specific Cell Culture and Delivery Platforms
11:19

Fabrication of Extracellular Matrix-derived Foams and Microcarriers as Tissue-specific Cell Culture and Delivery Platforms

Published on: April 11, 2017

The surface molecular functionality of decellularized extracellular matrices.

Christopher A Barnes1, Jeremy Brison, Roger Michel

  • 1University of Washington Engineered Biomaterials, Seattle, WA 98195, USA.

Biomaterials
|November 9, 2010
PubMed
Summary
This summary is machine-generated.

Decellularized tissue scaffolds retain unique molecular fingerprints, differentiating esophagus, bladder, and intestine matrices. This extracellular matrix (ECM) analysis aids tissue engineering by revealing scaffold composition for cell interaction.

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Development and Characterization of Decellularized Lung Extracellular Matrix Hydrogels
06:12

Development and Characterization of Decellularized Lung Extracellular Matrix Hydrogels

Published on: December 8, 2023

Related Experiment Videos

Last Updated: Jun 6, 2026

Fabrication of Extracellular Matrix-derived Foams and Microcarriers as Tissue-specific Cell Culture and Delivery Platforms
11:19

Fabrication of Extracellular Matrix-derived Foams and Microcarriers as Tissue-specific Cell Culture and Delivery Platforms

Published on: April 11, 2017

Development and Characterization of Decellularized Lung Extracellular Matrix Hydrogels
06:12

Development and Characterization of Decellularized Lung Extracellular Matrix Hydrogels

Published on: December 8, 2023

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Decellularization creates tissue scaffolds for regenerative medicine.
  • Scaffold success is linked to extracellular matrix (ECM) molecular signals.
  • Understanding ECM composition is crucial for optimizing tissue regeneration.

Purpose of the Study:

  • To characterize the molecular composition of decellularized rat esophagus, bladder, and small intestine scaffolds.
  • To investigate the retention of basement membrane components (collagen IV, laminin) after decellularization.
  • To establish distinct molecular fingerprints for different decellularized tissue types using surface analysis.

Main Methods:

  • Decellularization of rat esophagus, bladder, and small intestine.
  • Immunostaining for collagen IV and laminin.
  • Scanning electron microscopy for surface topography.
  • Time-of-flight secondary ion mass spectrometry (ToF-SIMS) for surface molecular analysis.
  • Principal component analysis (PCA) for data interpretation.

Main Results:

  • Distinct molecular fingerprints were generated for decellularized esophagus, bladder, and small intestine scaffolds using ToF-SIMS and PCA.
  • PCA scores showed clear separation between esophagus and small intestine derived scaffolds.
  • Decellularized bladder scaffolds exhibited molecular profiles intermediate to esophagus and small intestine.
  • Basement membrane components were assessed, and surface topography was visualized.

Conclusions:

  • Decellularized tissue scaffolds possess unique molecular signatures based on their tissue of origin.
  • ToF-SIMS combined with PCA provides a powerful method for differentiating ECM composition in tissue-engineered scaffolds.
  • These findings contribute to understanding how ECM molecular cues influence cell behavior in regenerative medicine applications.