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Updated: May 17, 2025

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Role of m5C methylation in digestive system tumors (Review)
Li Zhang1, Jianbo Yuan2, Shun Yao1
1Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China.
Abstract:
Currently, the incidence of digestive system tumors has been increasing annually, thus becoming a prevalent cause of cancer‑related mortalities. Although significant strides have been made in targeting the molecular mechanisms that underpin the development of these tumors, their treatment and prognosis still pose substantial challenges. This is primarily due to the ambiguity of early diagnostic indicators and the fact that most digestive system tumors are detected at an advanced stage. However, epigenetic modifications are capable of altering the expression of oncogenes and regulating biological processes in cancer. In recent years, the study of methylation in relation to tumor pathogenesis has become a focus of prominent research. Among the various types of methylation, 5‑methylcytosine (m5C) methylation plays a crucial role in the development of digestive system tumors and is anticipated to serve as a novel therapeutic target. However, to date, a comprehensive and systematic review concerning the role of m5C methylation in digestive system tumors is lacking. Consequently, the present study reviewed the role of m5C methylation in digestive system tumors such as esophageal cancer, gastric cancer and hepatocellular carcinoma, with the aim of providing a valuable reference for future research endeavors.
Insights
5-methylcytosine (m5C) methylation is crucial in digestive system tumors like esophageal, gastric, and liver cancers. Understanding its role offers new therapeutic targets for these prevalent malignancies.
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Digestive system tumors are a leading cause of cancer mortality, with challenging treatment and prognosis.
- Early diagnosis is difficult, and tumors are often found at advanced stages.
- Epigenetic modifications, including DNA methylation, significantly influence cancer development.
Purpose of the Study:
- To systematically review the role of 5-methylcytosine (m5C) methylation in digestive system tumors.
- To highlight m5C methylation as a potential novel therapeutic target.
- To provide a reference for future research on m5C in digestive cancers.
Main Methods:
- Literature review of studies on m5C methylation in digestive system cancers.
- Analysis of the impact of m5C modifications on oncogene expression and biological processes.
- Focus on esophageal cancer, gastric cancer, and hepatocellular carcinoma.
Main Results:
- m5C methylation plays a critical role in the pathogenesis of digestive system tumors.
- Dysregulation of m5C is implicated in the development of esophageal, gastric, and liver cancers.
- m5C modifications are emerging as significant biomarkers and therapeutic targets.
Conclusions:
- m5C methylation is a key epigenetic mechanism in digestive system tumorigenesis.
- Targeting m5C pathways presents a promising strategy for novel cancer therapies.
- Further research is warranted to fully elucidate and exploit the therapeutic potential of m5C in digestive cancers.
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