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The Extracellular Matrix

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.

The Extracellular Matrix

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...

Extracellular Matrix

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...

Role of Matrix Metalloproteases in Degradation of ECM

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...

Cell-matrix's Response to Mechanical Forces

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...

Overview of Cell-Matrix Interactions

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...

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Related Experiment Video

Updated: Jun 20, 2026

Production of Extracellular Matrix Fibers via Sacrificial Hollow Fiber Membrane Cell Culture

Production of Extracellular Matrix Fibers via Sacrificial Hollow Fiber Membrane Cell Culture

Published on: February 2, 2019

Extracellular matrix biomaterials for soft tissue repair.

Kevin G Cornwell¹, Adam Landsman, Kenneth S James

¹TEI Biosciences Inc., 7 Elkins Street, Boston, MA 02127, USA.

Clinics in Podiatric Medicine and Surgery

|September 26, 2009

Summary

Extracellular matrix (ECM) implants offer biological and physical benefits, with processing methods influencing their integration into the body. Different ECM devices can be resorbed, encapsulated, or regenerate new tissue (gTissue).

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Last Updated: Jun 20, 2026

Production of Extracellular Matrix Fibers via Sacrificial Hollow Fiber Membrane Cell Culture

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Published on: February 2, 2019

Processing of Human Cardiac Tissue Toward Extracellular Matrix Self-assembling Hydrogel for In Vitro and In Vivo Applications

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Published on: December 4, 2017

Fabricating a Kidney Cortex Extracellular Matrix-Derived Hydrogel

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Published on: October 13, 2018

Area of Science:

Biomaterials Science
Tissue Engineering
Regenerative Medicine

Background:

Extracellular matrix (ECM) derived implants are increasingly utilized in regenerative medicine.
Conventional biomaterial wisdom is challenged by the diverse biological and physical augmentation ECM implants provide.
Post-implantation responses vary significantly based on ECM processing.

Purpose of the Study:

To review clinically available ECM devices.
To highlight the impact of tissue source and processing on ECM implant properties.
To discuss host-implant interactions and surgical considerations for ECM devices.

Main Methods:

Review of current clinical ECM devices.
Analysis of tissue processing methodologies and their effect on ECM properties.
Evaluation of host-implant interactions and surgical applications.

Main Results:

ECM processing dictates host responses, including foreign body encapsulation, degradation/resorption, or tissue regeneration (gTissue).
Tissue source and processing significantly influence ECM physicomechanical properties.
Varied host-implant interactions are observed depending on the ECM device and its application.

Conclusions:

ECM implant performance is highly dependent on tissue source and processing techniques.
Understanding these factors is crucial for optimizing surgical applications and clinical outcomes.
ECM technology offers diverse strategies for tissue augmentation and regeneration.