Original Article
Bioinformatics analysis and significance of key genes for oxaliplatin resistance in colorectal cancer
Xu Jianbo, Zhou Xingyu, Xie Qinqin, Ou Xinde, Ye Jinning, Peng Jianjun, Wu Hui
Published 2020-10-01
Cite as Chin Arch Gen Surg(Electronic Edition), 2020, 14(5): 349-354. DOI: 10.3877/cma.j.issn.1674-0793.2020.05.007
Abstract
ObjectiveTo identify the gene signatures and pathways associated with oxaliplatin (OXA) resistance in colorectal cancer (CRC).
MethodsThe gene expression profile of GSE76092 was analyzed from the Gene Expression Omnibus (GEO) database. Via GEO2R tool, differentially expressed genes (DEGs) between OXA-sensitive and OXA-resistant cell lines of CRC were sorted. Then the DAVID online tool was used to analyze Gene Ontology (GO) and Kyoto Encyclopedia of Gene and Genome (KEGG) pathway. Next, protein-protein interaction (PPI) networks were constructed by STRING and modified by Cytoscape. The hub genes were selected via MCODE plugin and the survival analysis was performed on the GEPIA. Finally, the miRWalk was used to predict the gene-related miRNAs.
ResultsA total of 474 DEGs were obtained. The DEGs-related GO and KEGG pathways were identified and the PPI networks were built. Among them, 15 hub genes were screened out, 7 of which were significantly involved in NF-kappa B signaling pathway and Chemokine signaling pathway. The survival analysis of the 7 key genes indicated that CXCL8, IL-1β and PTGS2 expression levels were associated with overall survival. Finally, hsa-miR-6893-5p, hsa-miR-7851-3p and hsa-miR-96-3p were predicted as the core miRNAs.
ConclusionOn the basis of bioinformatical methods, key genes and pathways in OXA-resistant CRC were identified, which could provide a deeper understanding of underlying mechanisms of OXA resistance in CRC.
Key words:
Colorectal Neoplasms; Oxaliplatin; Resistance; Bioinformatics analysis
Contributor Information
Xu Jianbo
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
Zhou Xingyu
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
Xie Qinqin
School of Nursing, Sun Yat-sen University, Guangzhou 510080, China
Ou Xinde
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
Ye Jinning
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
Peng Jianjun
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
Wu Hui
Department of Gastrointestinal Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China