Abstract
Alterations in DNA methylation play an important pathophysiological role in the development and progression of colorectal cancer. We comprehensively profiled DNA methylation alterations in 165 Korean patients with colorectal cancer (CRC), and conducted an in-depth investigation of cancer-specific methylation patterns. Our analysis of the tumor samples revealed a significant presence of hypomethylated probes, primarily within the gene body regions; few hypermethylated sites were observed, which were mostly enriched in promoter-like and CpG island regions. The CpG Island Methylator Phenotype-High (CIMP-H) exhibited notable enrichment of microsatellite instability-high (MSI-H). Additionally, our findings indicated a significant correlation between methylation of the MLH1 gene and MSI-H status. Furthermore, we found that the CIMP-H had a higher tendency to affect the right-side of the colon tissues and was slightly more prevalent among older patients. Through our methylome profile analysis, we successfully verified the methylation patterns and clinical characteristics of Korean patients with CRC.
Original language | English |
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Pages (from-to) | 110-115 |
Number of pages | 6 |
Journal | BMB Reports |
Volume | 57 |
Issue number | 2 |
DOIs | |
State | Published - 2024 |
Bibliographical note
Publisher Copyright:© 2024 by the The Korean Society for Biochemistry and Molecular Biology. All Rights Reserved.
Keywords
- Colorectal cancer
- CpG island methylator phenotype (CIMP)
- DNA methylation
- MutL homolog 1 (MLH1)