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Updated: Dec 16, 2025

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Cancer Epigenetics for the 21st Century: What's Next?
1Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), 08908 L'Hospitalet, Barcelona, Catalonia, Spain.
Abstract:
The discovery of global DNA hypomethylation events in human tumors in the early 1980s and the identification of CpG island promoter hypermethylation of tumor suppressor genes in cancer cells in the mid 1990s opened the door to the current excitement about the contribution of epigenetic disruption to human disease. The recent gigantic advances in technology make it possible to obtain complete DNA methylomes, histonomes, and non-coding RNA transcriptomes for many biological settings and their associated disorders. Furthermore, whole genome sequencing analyses yields an increasing number of mutated epigenetic genes in neoplasia. It is time to sit back, enjoy the show with a little help of friendly bioinformatic tools, and wonder about what will happen next.
Insights
Epigenetic alterations, including DNA hypomethylation and hypermethylation, are crucial in human diseases. Advances in technology now allow comprehensive analysis of these epigenetic changes and mutations in cancer.
Area of Science:
- Epigenetics
- Cancer Biology
- Genomics
Background:
- Global DNA hypomethylation was discovered in human tumors in the 1980s.
- CpG island promoter hypermethylation of tumor suppressor genes was identified in cancer cells in the 1990s.
- These discoveries highlighted the role of epigenetic disruption in human disease.
Purpose of the Study:
- To review the advancements in understanding epigenetic contributions to human disease.
- To highlight the impact of technological progress on epigenetic research.
- To discuss the integration of multi-omics data in cancer research.
Main Methods:
- Technological advancements enabling complete DNA methylomes, histonomes, and non-coding RNA transcriptomes.
- Whole genome sequencing for identifying mutated epigenetic genes in neoplasia.
- Bioinformatic tools for analyzing complex epigenetic data.
Main Results:
- Comprehensive epigenetic profiling is now feasible across various biological settings and disorders.
- Whole genome sequencing reveals an increasing number of mutated epigenetic genes in cancers.
- Epigenetic data integration provides deeper insights into disease mechanisms.
Conclusions:
- Epigenetic disruption is a significant factor in human disease, particularly cancer.
- Technological innovations have revolutionized the study of epigenetics.
- Future research will likely focus on integrating multi-omics data and utilizing advanced bioinformatics to unravel complex epigenetic landscapes in disease.
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