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Related Experiment Videos

Keratan sulfate: structure, biosynthesis, and function.

J L Funderburgh1

  • 1Department of Ophthalmology, University of Pittsburgh, 203 Lothrop Street, Pittsburgh, PA 15213, USA.

Glycobiology
|October 13, 2000
PubMed
Summary

Recent research reveals keratan sulfate (KS) is crucial for corneal transparency and has diverse roles in cellular biology, including development and wound healing. This adaptable polysaccharide is found in many tissues and linked to over 15 proteins.

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Area of Science:

  • Biochemistry
  • Glycobiology
  • Cellular Biology

Background:

  • Keratan sulfate (KS) research has surged in the past five years, expanding our understanding of its associated molecules.
  • Over 15 KS-linked proteins have been identified, with many encoding genes successfully cloned.
  • KS is present in epithelial and neural tissues, with expression varying during development, physiological changes, and wound healing.

Purpose of the Study:

  • To review recent advancements in keratan sulfate (KS) research.
  • To explore the diverse roles and molecular interactions of KS in various biological processes.
  • To highlight the significance of KS in tissue function and cellular biology.

Main Methods:

  • Identification of over 15 KS-linked proteins and cloning of their genes.
  • Development of a corneal cell culture system for sustained KS biosynthesis.
  • Utilizing mouse knockout models to investigate KS function in corneal transparency.

Main Results:

  • KS-containing molecules are found in numerous epithelial and neural tissues.
  • A mouse knockout model provided the first experimental evidence for KS's role in corneal transparency.
  • Functional roles for KS in cellular recognition, axonal guidance, cell motility, and embryo implantation have been supported.

Conclusions:

  • Keratan sulfate (KS) is a highly adaptable polysaccharide with expanding roles in cellular biology.
  • KS plays a significant role in maintaining corneal transparency and influences various cellular processes.
  • Further research continues to uncover the complex functions of KS in diverse physiological and pathological contexts.

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