Prognostic value of RNF113A shows a correlation with immune infiltrates in colorectal cancer

Objective: To explore the prognostic role of RNF113A in colorectal cancer (CRC) and its relationship with immune infiltration. Methods: Data from publicly available datasets were collected and analyzed to evaluate RNF113A expression in different tumors compared with normal samples and investigate the relationship between RNF113A and CRC survival. The protein expression of RNF113A among colorectal cancer cell lines (HCT116, Caco2, Colon3) and human colorectal mucosa cell (FHC) was detected as well. Pathway enrichment analysis was performed to identify signaling pathways associated with RNF113A. The diagnostic and prognostic values of RNF113A expression in CRC and its correlation with cancer immune characteristics were analyzed by using the TIMER and TISIDB databases. Results: RNF113A is predominantly overexpressed in CRC, which has diagnostic and prognostic value. The protein expression of RNF113A in Colon3 cells was significantly higher than that of FHC cells (P<0.05). The rRNA processing signaling pathway-related gene SNU13 was positively correlated with RNF113A (R=0.245, P<0.001). The area under the ROC curve (AUC) of RNF113A expression for diagnosis of CRC was 0.885. The nomogram showed that RNF113A expression outperformed traditional clinical features such as age in predicting prognosis. RNF113A expression was negatively correlated with the infiltration level of memory B cells, NK cells, Th2 cells, and CD8(+) T cells. Moreover, RNF113A expression was negatively correlated with the expression of CCL4, CXCL16, CCR5, and CXCR4. Conclusion: RNF113A may regulate CRC through the rRNA processing pathway and negatively correlate with the infiltration level of immune cells, serving as a prognostic biomarker for CRC.