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Related Concept Videos

Matrix Proteoglycans and Glycoproteins01:21

Matrix Proteoglycans and Glycoproteins

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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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Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
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Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
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Synthesis of Thermogelling PolyN-isopropylacrylamide-graft-chondroitin Sulfate Composites with Alginate Microparticles for Tissue Engineering
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Proteosaccharide combinations for tissue engineering applications.

Henna Cassimjee1, Pradeep Kumar1, Yahya E Choonara1

  • 1Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown, 2193, South Africa.

Carbohydrate Polymers
|March 4, 2020
PubMed
Summary

This review explores using natural proteins and polysaccharides to create biomaterials for tissue engineering. Combining these materials mimics the extracellular matrix, promoting cell growth and regeneration for better tissue repair.

Keywords:
AlginateBiomimicryChitosanCrosslinkingHyaluronic acidHydrogelProteosaccharide

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • The extracellular matrix (ECM) comprises proteoglycans and proteins, serving as a model for biomaterial design.
  • Polysaccharides offer biocompatibility, hydrophilicity, and biodegradability, making them suitable for regenerative scaffolds.
  • Modifying polysaccharides for enhanced properties is chemically intensive and time-consuming.

Purpose of the Study:

  • To review naturally occurring protein-polysaccharide combinations for biomaterials.
  • To highlight their application in tissue engineering for improved cell proliferation and regeneration.
  • To discuss strategies for mimicking the ECM to guide cell growth.

Main Methods:

  • Literature review focusing on naturally derived protein-polysaccharide biomaterials.
  • Analysis of studies utilizing these combinations in tissue engineering applications.
  • Examination of the role of these combinations in mimicking ECM properties.

Main Results:

  • Protein-polysaccharide combinations effectively mimic the natural ECM structure and function.
  • These composite biomaterials enhance cell proliferation, signaling, and tissue regeneration.
  • Combining proteins and polysaccharides improves mechanical strength and physiological response compared to single components.

Conclusions:

  • Naturally occurring protein-polysaccharide composites are promising biomaterials for tissue engineering.
  • Their synergistic properties facilitate cell growth and regeneration, offering advantages over modified polysaccharides alone.
  • Further research into these combinations can advance regenerative medicine strategies.