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Related Concept Videos

The Extracellular Matrix01:29

The Extracellular Matrix

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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...
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The Extracellular Matrix01:42

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Extracellular Matrix01:26

Extracellular Matrix

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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...
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Overview of Cell-Matrix Interactions01:24

Overview of Cell-Matrix Interactions

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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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Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

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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...
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Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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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...
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Related Experiment Video

Updated: Dec 24, 2025

Production of Extracellular Matrix Fibers via Sacrificial Hollow Fiber Membrane Cell Culture
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Why regenerative medicine needs an extracellular matrix.

Glenn D Prestwich1, Kevin E Healy

  • 1The University of Utah, Department of Medicinal Chemistry , 419 Wakara Way, Suite 205, Salt Lake City, UT 84108-1257 , USA gprestwich@pharm.utah.edu.

Expert Opinion on Biological Therapy
|December 9, 2014
PubMed
Summary

Semisynthetic extracellular matrix (sECM) mimetics are crucial for effective cell therapy. Utilizing sECM, whether complex or minimalist, enhances therapeutic cell delivery and retention for improved regenerative medicine outcomes.

Keywords:
cell deliverycell differentiationcell retentioncell therapyclinical biomaterialextracellular matrixregulatory barriersstem-cell transplantationtissue engineeringtranslational medicine

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Cell Therapy Engineering

Background:

  • Cell therapy often faces challenges with efficacy, sometimes perceived as hype or unnecessary medical tourism.
  • Effective delivery and retention of therapeutic cells at the administration site are critical for successful cell-based therapies.

Discussion:

  • This editorial explores the use of semisynthetic extracellular matrix (sECM) mimetics to improve cell therapy outcomes.
  • Two design approaches for sECM are presented: 'design for optimal functionality' (tailored properties) and 'design for simplicity' (minimalist sECM for in situ customization).

Key Insights:

  • Semisynthetic extracellular matrix (sECM) mimetics are essential for enhancing therapeutic cell delivery and retention.
  • Both instructive and minimalist sECM designs contribute to improved cell therapy efficacy.
  • Tailoring sECM properties or allowing in situ biological customization are key strategies.

Outlook:

  • The integration of sECM mimetics represents a significant advancement in regenerative medicine.
  • Further research into sECM design and application will likely overcome current limitations in cell therapy.
  • sECM holds promise for making cell-based therapies more effective and reliable.