Construction of ceRNA co-expression network and screening of molecular targets in colorectal cancer

Abstract Objective to screen some RNAs that correlated with colorectal cancer (CRC).Methods Differentially expressed miRNAs, lncRNAs, and mRNAs between cancer tissues and normal tissues in CRC were identified using data from the Gene Expression Omnibus (GEO) database. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway and protein-protein interactions (PPIs) were performed to do the functioal enrichment analysis. And a lncRNA-miRNA-mRNA network was constructed wich correlated with CRC. RNAs in this network were subjecte to analyze the relationship with the patient prognosis.Results A total of 688, 241, and 103 differentially expressed genes (diff-mRNA), diff-lncRNA, and diff-miRNA were obtained. between cancer tissues and normal tissues. A total of 315 edges were obtained in the ceRNA network. lncRNA RP11-108K3.2 and mRNA ONECUT2 correlated with prognosis.Conclusion The identified RNAs and constructed ceRNA network could provide great sources for the reasearches of therapy the CRC. And the lncRNA RP11-108K3.2 and mRNA ONECUT2 may serve novel prognostic predictor of CRC.