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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...

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.

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...

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...

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...

Matrix Proteoglycans and Glycoproteins

Matrix Proteoglycans and Glycoproteins

Proteoglycans are extensively glycosylated proteins, commonly found in the extracellular matrix, interwoven with collagen fibers. Hyaline cartilage, the most common type of cartilage in the body, consists of short and dispersed collagen fibers associated with large amounts of proteoglycans. These proteoglycans have long negative charges that attract cations, which in turn attract water molecules. This influx of ions and water molecules swells up the proteoglycan like a water-soaked gel that can...

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Related Experiment Video

Updated: Jun 26, 2026

Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

Published on: April 3, 2015

Extracellular matrix, leukocyte migration and laminitis.

¹Department of Veterinary and Animal Sciences, University of Massachusetts, 161 Holdsworth Way, Amherst, MA 01003, USA. sblack@vasci.umass.edu

Veterinary Immunology and Immunopathology

|December 27, 2008

Summary

The extracellular matrix (ECM) is dynamic in healthy and diseased tissues. This study focuses on the ECM within equine digital laminae, crucial for hoof health.

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Last Updated: Jun 26, 2026

Concentric Gel System to Study the Biophysical Role of Matrix Microenvironment on 3D Cell Migration

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Published on: April 3, 2015

Laminar Flow-based Assays to Investigate Leukocyte Recruitment on Cultured Vascular Cells and Adherent Platelets

Laminar Flow-based Assays to Investigate Leukocyte Recruitment on Cultured Vascular Cells and Adherent Platelets

Published on: April 9, 2018

Area of Science:

Biochemistry
Veterinary Medicine
Tissue Engineering

Background:

The extracellular matrix (ECM) provides structural and biochemical support to tissues.
Dysregulation of ECM dynamics is implicated in various pathological conditions.
The equine digital laminae are specialized structures critical for equine locomotion and health.

Purpose of the Study:

To discuss the structure and dynamic nature of the ECM.
To contextualize ECM changes in healthy versus diseased states.
To specifically examine the ECM within equine digital laminae.

Main Methods:

Literature review on ECM structure and function.
Analysis of studies on tissue pathology.
Focus on research pertaining to equine lamellar tissue.

Main Results:

The ECM exhibits complex structural organization and dynamic remodeling.
Alterations in ECM composition and turnover are characteristic of disease states.
Specific ECM characteristics of equine digital laminae are highlighted.

Conclusions:

Understanding ECM dynamics is vital for comprehending tissue health and disease.
The equine digital laminae present a unique model for studying ECM pathologies.
Further research into ECM modulation could offer therapeutic strategies for equine lameness.