International Journal of General Medicine (May 2023)
The Role of RNA Methylation Modification Related Genes in Prognosis and Immunotherapy of Colorectal Cancer
Abstract
Ruoyang Lin,1 Renpin Chen,1 Lechi Ye,2 Zhiming Huang,1 Xianfan Lin,1 Tanzhou Chen1 1Department of Gastroenterology and Hepatology, the First Affiliated Hospital of Wenzhou, Medical University, Wenzhou, People’s Republic of China; 2Department of Colorectal and Anal Surgery, the First Affiliated Hospital of Wenzhou, Medical University, Wenzhou, People’s Republic of ChinaCorrespondence: Tanzhou Chen, Tel +8613706661269, Email [email protected]: Researches showed RNA methylation genes can affect the prognosis of tumors. Thus, the study aimed to comprehensively analyze the effects of RNA methylation regulatory genes in prognosis and treatment of colorectal cancer (CRC).Methods: Prognostic signature associated with CRCs were constructed by differential expression analysis, Cox and Least Absolute Shrinkage and Selection Operator (LASSO) analyses. Receiver operating characteristic (ROC) and Kaplan–Meier survival analyses were used to validate the reliability of the developed model. Gene Ontology (GO), Gene set variation analysis (GSVA), and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed for functional annotation. Finally, normal and cancerous tissue were collected to validate gene by quantitative real-time PCR (qRT-PCR).Results: A prognostic risk model based on leucine rich pentatricopeptide repeat containing (LRPPRC) and ubiquitin-like with PHD and ring finger domains 2 (UHRF2) was constructed and relevant to the overall survival (OS) of CRC. Functional enrichment analysis revealed that collagen fibrous tissue, ion channel complex and other pathways were significantly enriched, which might help explain the underlying molecular mechanisms. There were significant differences in ImmuneScore, StromalScore, ESTIMATEScore between high- and low-risk groups (p < 0.05). Ultimately, qRT-PCR validation showed that a significant upregulation in the expression of LRPPRC and UHRF2 in cancerous tissue, which verified the effectiveness of our signature.Conclusion: In conclusion, 2 prognostic genes (LRPPRC and UHRF2) related to RNA methylation were identified by bioinformatics analysis, which might supply a new insight into the treatment and evaluation of CRC.Keywords: colorectal cancer, prognosis, RNA methylation regulatory genes, tumor microenvironment, immunotherapy
