[논문]Identification and Interaction Analysis of Molecular Markers in Colorectal Cancer by Integrated Bioinformatics Analysis

Han, Bin; Feng, Dan; Yu, Xin; Zhang, Yuanyuan; Liu, Yuanqi; Zhou, Liming

doi:10.12659/MSM.910106

Identification and Interaction Analysis of Molecular Markers in Colorectal Cancer by Integrated Bioinformatics Analysis 원문보기

Medical science monitor : international medical journal of experimental and clinical research, v.24, 2018년, pp.6067 - 6077

Han, Bin (Department of Pharmacology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, P.R. China) , Feng, Dan (Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, P.R. China) , Yu, Xin (Health Service Center of Southeast Community, Nanchong, Sichuan, P.R. China) , Zhang, Yuanyuan (Department of Pharmacology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, P.R. China) , Liu, Yuanqi (Department of Pharmacology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, P.R. China) , Zhou, Liming (Department of Pharmacology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, P.R. China)

Abstract ▼ AI-Helper

BackgroundColorectal cancer (CRC) is an extremely common gastrointestinal malignancy.Material/MethodsThree mRNA and 2 microRNA microarray datasets were downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) and microRNAs (DEMs) were obtained. The Database for Annotation, Visualization, and Integrated Discovery (DAVID) program was utilized to perform gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Protein–protein interaction (PPI) network analysis was performed with the Search Tool for the Retrieval of Interacting Genes (STRING) and Cytoscape and Molecular Complex Detection (MCODE). Kaplan-Meier curves were plotted to determine overall survival (OS) estimates. DEMs targets were predicted by miRWalk. Quantitative reverse transcription polymerase chain reaction (QRT-PCR) was utilized to detect the expression of genes and microRNAs.ResultsA total of 264 DEGs and 8 DEMs were obtained. GO analysis revealed that the DEGs were enriched in terms of cell structure, digestion, receptor binding, and extracellular material (ECM). KEGG pathway analysis showed that the DEGs were enriched in ECM interaction and mineral absorption. Additionally, a PPI network consisting of 181 nodes and 450 edges was established. Three modules with 38 high-degree hubs were extracted from the PPI network and found to be involved in pathways such as chemokine signaling. Five DEGs located in the network of DEM-DEG pairs were associated with the overall survival of CRC patients. Furthermore, hsa-miR-551b was demonstrated to be significantly down-regulated in CRC tissues.ConclusionsThe key biomarkers could provide new clues for CRC.

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Identification and Interaction Analysis of Molecular Markers in Colorectal Cancer by Integrated Bioinformatics Analysis 원문보기

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