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Targeting O-GlcNAcylation to develop novel therapeutics.

Yi Zhu1, Gerald W Hart2

  • 1Department of Biological Chemistry, Johns Hopkins University, School of Medicine, Baltimore, MD, 21205, USA; Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA.

Molecular Aspects of Medicine
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PubMed
Summary

O-linked β-D-N-acetylglucosamine (O-GlcNAc) is a crucial post-translational modification acting as a nutrient sensor. Dysregulation of O-GlcNAc is linked to diseases like cancer and diabetes, highlighting its therapeutic potential.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cellular Signaling

Background:

  • O-linked β-D-N-acetylglucosamine (O-GlcNAc) is a prevalent post-translational modification (PTM) on nuclear, cytoplasmic, and mitochondrial proteins.
  • O-GlcNAc functions as a key nutrient sensor, linking cellular metabolism to PTMs.
  • It exhibits significant crosstalk with protein phosphorylation, impacting cellular regulation.

Purpose of the Study:

  • To review the fundamental characteristics of O-GlcNAc modification.
  • To elucidate the O-GlcNAc signaling pathway and its regulatory mechanisms.
  • To explore the role of O-GlcNAc dysregulation in human diseases.

Main Methods:

  • Literature review of existing research on O-GlcNAc.
  • Analysis of O-GlcNAc's impact on protein function and cellular processes.
  • Examination of the association between O-GlcNAc and various human pathologies.

Main Results:

  • O-GlcNAc regulates diverse protein functions, including enzymatic and transcriptional activity, localization, interactions, and degradation.
  • Aberrant O-GlcNAcylation is implicated in diseases such as cancer, diabetes, and neurodegeneration.
  • O-GlcNAc signaling is sensitive to cellular metabolic status.

Conclusions:

  • O-GlcNAc is a vital PTM with broad regulatory roles in cellular physiology.
  • Its dysregulation contributes to significant human diseases, positioning it as a potential therapeutic target.
  • Further research into O-GlcNAc is crucial for understanding fundamental cell biology and disease mechanisms.