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Updated: Dec 26, 2025

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Epigenetic modifications in gastric cancer: Focus on DNA methylation
Vida Ebrahimi1, Alireza Soleimanian2, Tahereh Ebrahimi3
1Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract:
Gastric cancer is a complex heterogeneous disease which is the fourth prevalent malignancy worldwide. Although, several diagnosis and treatment are available for the gastric cancer patients, however the malignancy is still the third leading cause of cancer-related death in the world. Beside the genetic and environmental factors, epigenetic alterations are also involved in the emergence of gastric cancer. Epigenetics alterations are heritable changes which regulate gene expression without occurring changes in DNA sequence. Epigenetic changes mostly include DNA methylation, histon post-translational modifications, chromatin remodeling and non-coding RNAs. Among the mentioned epigenetic modifications, DNA methylation is a major epigenetic process that plays a key role in different stages of evolution and cancer development. In this review, we address all types of related epigenetic modifications in gastric cancer by focus on DNA methylation by reviewing the recent literatures. Understanding of molecular mechanisms of epigenetics alterations in gastric cancer development helps researchers to identify new epigenetic drugs against the malignancy.
Insights
Gastric cancer, a major global malignancy, involves epigenetic alterations like DNA methylation. Understanding these changes is key to developing new epigenetic drugs for cancer treatment.
Area of Science:
- Oncology
- Epigenetics
- Molecular Biology
Background:
- Gastric cancer is a prevalent malignancy and a leading cause of cancer death worldwide.
- Both genetic and environmental factors contribute to gastric cancer, alongside epigenetic alterations.
- Epigenetic modifications, including DNA methylation, regulate gene expression without altering DNA sequence.
Purpose of the Study:
- To review epigenetic modifications involved in gastric cancer development.
- To focus on the role of DNA methylation in gastric cancer.
- To explore the potential for developing new epigenetic drugs.
Main Methods:
- Literature review of recent studies on epigenetic modifications in gastric cancer.
- Focus on DNA methylation as a key epigenetic process.
- Analysis of molecular mechanisms underlying epigenetic alterations.
Main Results:
- Epigenetic alterations, particularly DNA methylation, play a significant role in gastric cancer.
- DNA methylation is implicated in various stages of cancer evolution and development.
- Understanding these mechanisms is crucial for identifying therapeutic targets.
Conclusions:
- Epigenetic modifications are integral to gastric cancer pathogenesis.
- DNA methylation is a critical factor in gastric cancer development.
- Further research into epigenetic mechanisms can lead to novel therapeutic strategies and epigenetic drugs.
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