Abstract
To investigate and analyze changes in the expression level and clinicopathological significance of miR-193b-3p in non-small cell lung cancer (NSCLC). In the present study, Gene Expression Omnibus (GEO), Targetscan, starBase, and Metastases databases were retrieved for bioinformatics analysis. qRT-PCR was conducted to determine the expression level of miR-193b-3p in the serum or tissues of NSCLC patients. The correlation between the expression level of serum miR-193b-3p and the clinical characteristics of NSCLC patients was analyzed, and receiver operating characteristic (ROC) curves were analyzed to assess the diagnostic significance of serum expression of miR-193b-3p in NSCLC. The GEO2R tool was used to analyze the GSE102286 dataset in the GEO database, indicating that miR-193b-3p is one of the overexpressed miRNAs in NSCLC. Databases, such as TargetScan and starBase, were used to predict miR-193b-3p target genes. Finally, 153 target genes were retrieved, and gene ontology (GO) and KEGG analyses were conducted based on the Metascape database, which indicated that all 153 target genes participated in multiple biological processes and signaling pathways closely correlated with the genesis and progression of NSCLC. miR-193b-3p is highly expressed in the serum and cancer tissues of patients with NSCLC. The high miR-193b-3p expression group had a lower degree of cancer differentiation, a higher proportion of late TNM stage, and a greater incidence of lymph node metastasis. ROC curve analysis reported that the area under the curve was 0.89 (95% CI: 0.85-0.92). High miR-193b-3p expression levels were detected in NSCLC patients and were closely correlated with the degree of malignancy in NSCLC. miR-193b-3p expression levels have a diagnostic effect on NSCLC.