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Updated: Jul 23, 2025
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Methyl-binding DNA capture Sequencing for Patient Tissues
Published on: October 31, 2016
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Promoter Methylation-Regulated Differentially Expressed Genes in Breast Cancer
Samar Sindi1, Norah Hamdi1,2, Sabah Hassan1,3
1Department of Biological Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
Breast Cancer (Dove Medical Press)
|July 12, 2023
Summary
Aberrant DNA methylation in breast cancer is linked to altered gene expression. This study identified 81 differentially methylated and expressed genes, including PUM1 and ZFAND2B, suggesting potential prognostic biomarkers.
Area of Science:
- Genomics
- Epigenetics
- Oncology
Background:
- Breast cancer is a prevalent malignancy in women.
- Aberrant DNA methylation patterns are increasingly recognized as key regulators of gene expression in cancer.
- Understanding these epigenetic alterations is crucial for identifying novel diagnostic and therapeutic targets.
Purpose of the Study:
- To investigate the role of differential DNA methylation in gene dysregulation in breast cancer.
- To identify specific genes and molecular pathways affected by aberrant promoter methylation.
- To explore the potential of these epigenetic changes as prognostic biomarkers.
Main Methods:
- Whole-genome bisulfite sequencing was employed to identify differentially methylated regions (DMRs) in breast cancer patients.
- Gene expression analysis was performed using the Illumina NovaSeq platform.
- Bioinformatic analyses, including Gene Ontology (GO) and KEGG pathway analysis, were used to interpret the data.
Main Results:
- The study identified 81 differentially promoter-methylated and expressed genes (DMGs/DEGs) in breast cancer.
- Key affected pathways included ubiquitin-protein transferase activity, ubiquitin-mediated proteolysis, and oxidative phosphorylation.
- Significant genes identified were Pumilio RNA binding family member 1 (PUM1) and Zinc finger AN1-type containing 2B (ZFAND2B).
Conclusions:
- Aberrant hypermethylation of critical genes in breast cancer pathways may serve as a valuable prognostic biomarker.
- The findings highlight the significant association between global hypomethylation and breast cancer in the studied Saudi population.
- Further research into these epigenetic alterations could lead to improved breast cancer management strategies.
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