A multi-database based ceRNA regulatory network for gastric cancer prognosis

ObjectiveCircular RNA(circRNA) is a kind of endogenous non-coding RNA, which may be related to the occurrence and development of cancer. Based on the GEO database, this paper constructs a circRNA as a competitive endogenous RNAs(ceRNAs) that binds with microRNAs (miRNAs) to affect and regulate the expression of target genes. The ceRNA regulatory network based on circRNA-miRNA-mRNA model plays an important role in tumor prognosis and treatment. This paper explores the mechanism of circRNA-related ceRNA regulatory network in gastric cancer. MethodCircRNA, miRNA and mRNA data sets related to gastric cancer were downloaded from The Gene Expression Omnibus (GEO), and the limma package of R software (R 4.2.1 version) was used to identify the differences between gastric cancer tissues and adjacent normal tissues of gastric cancer. DEcircRNA, DEmiRNAs, and DEmRNAs. Based on circBase database, we explored the interactions among circRNA, miRNA and mRNA, and constructed the circRNA-miRNA-mRNA ceRNA network by using Cytoscape_v3.8.0. Then KEGG, GO and survival analysis of ceRNA-related genes were performed. Then, the prognostic data of gastric cancer were extracted from the TCGA database to construct the prognostic subnetwork of gastric cancer. ResultsKEGG analysis of ceRNAs mRNA showed that the pathway was mainly enriched in IL-17 signaling pathway, TNF signaling pathway and so on, which affected the prognosis of gastric cancer. hsa_circ_0055521/hsa-miR-204-5p/FAP, (hsa_circ_0005051, hsa_circ_0007613, hsa_circ_0045602, hsa_circ_0034398, hsa_circ_0006089) /hsa-miR-32-3p/FNDC1 were the ceRNA networks related to the prognosis of gastric cancer collaterals. ConclusionThis study found that IL-17 signaling pathway and TNF signaling pathway may affect the occurrence, development and prognosis of gastric cancer. And hsa_circ_0055521/hsa-miR-204-5p/FAP, (hsa_circ_0005051, hsa_circ_0007613, hsa_circ_0045602, hsa_circ_0034398, hsa_circ_0006089) /hsa-miR-32-3p/FNDC1 two circrNa-based stomachs The cancer ceRNA prognostic network is a new prognostic related ceRNA network for gastric cancer. FNDC1 and FAP may be potential therapeutic targets for gastric cancer.