O-glycosylation in Cancer: Emerging Paradigms and Prospects for Precision Oncology

Area of Science:

• Biochemistry and Molecular Biology
• Cancer Research
• Glycomics

Background:

• O-glycosylation is a critical post-translational modification influencing tumor progression, metastasis, and immune evasion.
• Aberrant O-glycosylation, characterized by truncated glycans (Tn, sialyl-Tn) and dysregulated glycosyltransferases, drives oncogenesis across various cancers.

Purpose of the Study:

• To review recent advancements in understanding O-glycosylation's role in cancer.
• To highlight O-glycosylation's impact on cell-surface glycoproteins, intracellular signaling, and RNA modifications.
• To discuss the integration of multi-omics and machine learning for cancer classification and personalized treatment.

Main Methods:

• Literature review of recent progress in O-glycosylation research in cancer.
• Analysis of multi-omics data and machine learning applications in glycosylation signature identification.
• Examination of emerging RNA modification studies and advanced high-throughput tools (mass spectrometry, enzymatic methods).

Main Results:

• O-glycosylation significantly impacts cancer cell proliferation, metastasis, and immune evasion.
• Aberrant glycosylation patterns are linked to oncogenesis and can serve as distinct prognostic signatures.
• Newly discovered O-glycosylation of RNA adds regulatory complexity, broadening the scope of glycosylation research.
• Targeted interventions like glycosyltransferase inhibitors and combination therapies show therapeutic promise.

Conclusions:

• O-glycosylation plays a multifaceted role in cancer progression and treatment response.
• Integration of advanced tools and interdisciplinary collaboration is crucial for translating findings into precision oncology.
• Further research into O-glycosylation, including RNA modifications, is essential for improving patient outcomes.