Feb 2, 2019

Comprehensive bioinformation analysis of methylated and differentially expressed genes in esophageal squamous cell carcinoma

Molecular Omics
Hao PengXiao-Bin Cui


Differentially methylated genes (DMGs) play a crucial role in the etiology and pathogenesis of esophageal squamous cell carcinoma (ESCC). This study aimed to ascertain aberrant DMGs and pathways by comprehensive bioinformatics analysis. We downloaded the gene expression microarray of GSE51287 from the Gene Expression Omnibus (GEO). Aberrant DMGs were obtained using the GEO2R tool. Gene ontology (GO) analysis and Kyoto Encyclopedia of Gene and Genome pathway enrichment analyses were performed on selected genes by using the Database for Annotation Visualization and Integrated Discovery. A protein-protein interaction (PPI) network was constructed with the Retrieval of Interacting Genes (STRING) and visualized in Cytoscape. Then, the modules in the PPI networks were analyzed with Molecular Complex Detection, and the hub genes derived from the PPI networks were verified by using the Cancer Genome Atlas. A total of 271 DMGs, including 173 hypermethylated genes, were enriched in the biological processes of peptidyl-tyrosine phosphorylation, positive regulation of transcription from RNA polymerase II promoters, and autophosphorylation. Pathway analysis enrichment revealed cancer, PI3K-Akt, and Ras signaling pathways, and 98 hypomethyla...Continue Reading

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Mentioned in this Paper

Biological Markers
Antigens, Differentiation
Immune Response
Biochemical Pathway
Proton Pump Inhibitors

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