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Published on: February 24, 2026
O-GlcNAc signaling in cancer metabolism and epigenetics
Jay Prakash Singh1, Kaisi Zhang2, Jing Wu3
1Program in Integrative Cell Signaling and Neurobiology of Metabolism, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06519, USA; Section of Comparative Medicine, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06519, USA.
Abstract:
The covalent attachment of β-D-N-acetylglucosamine monosaccharides (O-GlcNAc) to serine/threonine residues of nuclear and cytoplasmic proteins is a major regulatory mechanism in cell physiology. Aberrant O-GlcNAc modification of signaling proteins, metabolic enzymes, and transcriptional and epigenetic regulators has been implicated in cancer. Relentless growth of cancer cells requires metabolic reprogramming that is intertwined with changes in the epigenetic landscape. This review highlights the emerging role of protein O-GlcNAcylation at the interface of cancer metabolism and epigenetics.
Insights
Protein O-GlcNAcylation, the addition of O-GlcNAc sugars to proteins, is crucial for cell regulation. Aberrant O-GlcNAc modification is linked to cancer, impacting cell metabolism and epigenetics.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Protein O-GlcNAcylation (O-GlcNAc) is a dynamic post-translational modification regulating cellular processes.
- Aberrant O-GlcNAc is implicated in various cancers, affecting key cellular functions.
- Cancer cell growth depends on metabolic reprogramming and epigenetic alterations.
Purpose of the Study:
- To review the critical role of O-GlcNAcylation in cancer.
- To highlight the interplay between cancer metabolism and epigenetics.
- To discuss the emerging significance of protein O-GlcNAcylation in this context.
Main Methods:
- Literature review of studies on O-GlcNAcylation, cancer metabolism, and epigenetics.
- Analysis of the regulatory mechanisms linking O-GlcNAc to cancer progression.
- Synthesis of current research findings.
Main Results:
- O-GlcNAcylation modifies signaling proteins, metabolic enzymes, and epigenetic regulators.
- Altered O-GlcNAc levels are associated with metabolic reprogramming in cancer.
- O-GlcNAcylation influences the epigenetic landscape, impacting cancer development.
Conclusions:
- Protein O-GlcNAcylation is a key player at the nexus of cancer metabolism and epigenetics.
- Understanding O-GlcNAcylation offers potential therapeutic strategies for cancer.
- Further research is needed to fully elucidate the role of O-GlcNAcylation in cancer.
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