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Related Concept Videos

The Extracellular Matrix01:42

The Extracellular Matrix

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Extracellular Matrix01:26

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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

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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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Cell-matrix's Response to Mechanical Forces01:13

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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. 
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Matrix Proteoglycans and Glycoproteins01:21

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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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Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
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Updated: Oct 10, 2025

Isolation of Whole Cell Protein Lysates from Mouse Facial Processes and Cultured Palatal Mesenchyme Cells for Phosphoprotein Analysis
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Extracellular Matrix in Human Craniofacial Development.

D A Cruz Walma1,2, K M Yamada1

  • 1Cell Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.

Journal of Dental Research
|December 8, 2021
PubMed
Summary
This summary is machine-generated.

The extracellular matrix (ECM) dynamically shapes craniofacial development through biochemical and biomechanical signaling. Understanding ECM

Keywords:
cell-matrix interactionscraniofacial biologycraniofacial geneticsdevelopmental biologyembryologymatrix biology

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Area of Science:

  • Developmental Biology
  • Biochemistry
  • Tissue Engineering

Background:

  • The extracellular matrix (ECM) is crucial for tissue development and function.
  • The craniofacial complex is intricate, comprising diverse tissues essential for vertebrate form.
  • Cell-ECM interactions guide cellular behaviors during organogenesis.

Purpose of the Study:

  • To review the ECM's role in craniofacial development.
  • To highlight recent advances in understanding ECM's orchestration of craniofacial morphogenesis.
  • To discuss ECM dysregulation in disease and its potential for regeneration.

Main Methods:

  • Literature review focusing on ECM's biochemical and biomechanical functions.
  • Synthesis of current research on ECM dynamics in craniofacial development.
  • Analysis of ECM's contribution to congenital disorders and regenerative strategies.

Main Results:

  • ECM's quantitative and qualitative changes are essential for tissue maturation.
  • ECM orchestrates cell movements, differentiation, and gene expression in craniofacial development.
  • Dysregulated ECM dynamics are implicated in craniofacial abnormalities.

Conclusions:

  • ECM plays a pivotal role in shaping craniofacial organs and tissues.
  • Further understanding of ECM functionality can inform regenerative medicine approaches.
  • Targeting ECM dynamics offers potential for treating craniofacial disorders.