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Ganglioside Extraction, Purification and Profiling
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Keratan Sulfate Is a Multifunctional Brain Glycosaminoglycan With Instructive Capabilities.

James Melrose1,2

  • 1Raymond Purves Bone and Joint Research Laboratories, Kolling Institute of Medical Research, Faculty of Medicine and Health, The University of Sydney and the Northern Sydney Local Health District, Royal North Shore Hospital, Sydney, New South Wales, Australia.

Journal of Neurochemistry
|August 27, 2025
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Summary

Keratan sulfate (KS), a brain glycosaminoglycan, is vital for neural network formation, neurotransmission, and cognitive functions. Its dysfunction may lead to neurological disorders.

Keywords:
KSKS‐proteoglycansaxonal guidanceneuronal cell regulationperineuronal nets

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Glycobiology

Background:

  • Keratan sulfate (KS) is a glycosaminoglycan (GAG) integral to brain proteoglycans.
  • KS possesses unique electroconductive properties essential for neurotransmission.

Purpose of the Study:

  • To elucidate the multifaceted roles of KS in brain function and homeostasis.
  • To understand KS's involvement in neural network assembly, repair, and signaling.

Main Methods:

  • The study reviews existing literature on KS structure and function in the brain.
  • Analysis of KS's interactions with various signaling molecules and cellular components.

Main Results:

  • KS plays crucial roles in neural development, axonal guidance, neurotransmitter transport, and synaptic plasticity.
  • It is involved in cognition, memory, neuronal proliferation, and differentiation.
  • KS also contributes to the assembly of receptors and ion channels, influencing neuronal control.

Conclusions:

  • Keratan sulfate is a multifunctional, instructive GAG essential for brain function and repair.
  • Dysregulation of KS-mediated signaling pathways may contribute to neurological disease development.