Abstract
The nuclear pore membrane protein 121 (POM121) is an important member of the nuclear pore complex which regulates nucleocytoplasmic transport, but little is known about the role of POM121 in laryngeal cancer. In this study, quantitative real-time polymerase chain reaction and immunohistochemistry were performed to detect POM121 expression in laryngeal tissues. The associations between POM121 and clinicopathological characteristics and overall survival in laryngocarcinoma patients were also analyzed. The mechanism of POM121 was preliminarily explored through gene set enrichment analysis (GSEA). mRNA and protein expression of POM121 in laryngocarcinoma tissues were higher than those in nontumor tissues. High POM121 expression was positively correlated with poor differentiation (χ²=42.391, P<0.001), advanced distant metastases (χ²=20.346, P<0.001) and TNM stage (χ²=23.436, P<0.001). Laryngocarcinoma patients with high POM121 level tended to have poor overall survival. GSEA confirmed that the mechanism of POM121 in laryngeal cancer may relate to sphingolipid metabolism, lysosome, fatty acid metabolism, ribosome, nucleotide excision repair and the PPAR signaling pathway. Overall, POM121 expression might be a prognostic biomarker in laryngeal cancer, and POM121 has the potential to present as a therapeutic target for laryngocarcinoma patients.
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