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Hyaluronan biology: A complex balancing act of structure, function, location and context.

Stavros Garantziotis1, Rashmin C Savani1

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Matrix Biology : Journal of the International Society for Matrix Biology
|February 26, 2019
PubMed
Summary

Hyaluronan (HA), a key extracellular matrix component, regulates tissue development and repair. Its complex biological activity depends on size, concentration, fragmentation, and interactions with binding proteins and cell receptors.

Keywords:
DegradationHyaluronanReceptorsSignalingStructureSynthesis

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Area of Science:

  • Extracellular Matrix Biology
  • Hyaluronan Biology
  • Tissue Engineering

Background:

  • Cell-matrix interactions are crucial for development, homeostasis, immunity, and pathology.
  • Hyaluronan (HA) is a vital extracellular matrix (ECM) component influencing structural integrity and tissue responses.
  • HA plays a significant role in tissue injury, repair, and regeneration processes.

Purpose of the Study:

  • To review the multifaceted factors governing hyaluronan's biological activity.
  • To highlight the complex interplay of HA's molecular characteristics and its signaling pathways.
  • To introduce key themes of a special issue on hyaluronan in Matrix Biology.

Main Methods:

  • Literature review focusing on hyaluronan's role in biological processes.
  • Analysis of factors influencing HA's biological activity, including size, concentration, and degradation.
  • Examination of HA interactions with binding proteins and cell receptors.

Main Results:

  • HA's biological effects are complex, influenced by molecular size and concentration.
  • Synthesis, degradation (enzymatic/oxidative-nitrative fragmentation), and HA-protein interactions modulate HA activity.
  • Cell context-specific signaling is critical for HA's diverse biological functions.

Conclusions:

  • Understanding the intricate regulation of HA activity is essential for comprehending its diverse biological roles.
  • The interplay of HA's biophysical properties and cellular interactions dictates its impact on tissue dynamics.
  • This review provides a framework for further research into hyaluronan's therapeutic potential in various conditions.