UBD is a potential diagnostic and prognostic biomarker in glioma

Author:

Wu Tao1,Yang Yachuan1,Xie Xuangui1,Zhang Hongliang1,Cai Decheng1,Li Peng1,Chen Tao1,Cai Yixiao1

Affiliation:

1. Chengdu First People's Hospital

Abstract

Abstract Background: Several studies had shown that the ubiquitin D (UBD) could be a potential prognostic factor in various cancers. However, the prognostic value of UBD in glioma remained unknown. Materials and Methods: The differences of UBD expression in glioma were analyzed based on the datasets of the Cancer Genome Atlas database (TCGA) and Chinese Glioma Genome Atlas (CGGA) and identified by qRT-PCR and western blot. Gene Ontology (GO) enrichment, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, and Gene set enrichment analysis (GSEA) were used to determine the functions of UBD. Moreover, the protein network of UBD was constructed using Cytoscape software. A spearman’s correlation analysis was performed to determine the association between UBD expression and immune cell infiltration. Additionally, a logistic regression analysis was performed to analyze the association between UBD expression and the clinicopathological characteristics of the glioma patients. The diagnostic and prognostic predictive values of UBD were evaluated using the Kaplan–Meier survival curves, Cox regression analysis, diagnostic receiver operating characteristic (ROC) curves, and nomogram model. Finally, the biological function of UBD was determined by wound healing assays, transwell assays, EdU and colony formation assays. Results: UBD expression in glioma samples was considerably increased, which was associated with the P53 pathway, angiogenesis, inflammatory response, TNFα -NF-κB signaling, IL-6-JAK-STAT3 signaling, PI3K-AKT-mTOR signaling, TGF-β signaling, KRAS signaling, as well as hypoxia, and epithelial-mesenchymal transition (EMT). UBD expression correlated with the infiltration level of immune cells through the ssGSEA method. High UBD expression was an independent prognostic factor of glioma in TCGA. ROC curve analysis showed good diagnostic efficacy of UBD in glioma. Furthermore, UBD could increase the migration, invasion and proliferation ability of glioma cells. Conclusion: UBD may be a potential prognostic marker and therapeutic target in glioma.

Publisher

Research Square Platform LLC

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