Objective To investigate the expression of topoisomeraseⅡα (TOP2α) in hepatocellular carcinoma (HCC) and its role in predicting prognosis of HCC patients. Methods We used HCC-related datasets in UALCAN, HCCDB, and cBioPortal databases to analyze the expression and mutation of TOP2α and its co-expressed genes in HCC tissues. GO function and KEGG pathway enrichment of TOP2α and its co-expressed genes were identified. The TIMER database was used to analyze infiltration levels of immune cells in HCC. The impacts of TOP2α and its co-expression genes and the infiltrated immune cells on the survival of HCC patients were assayed by Kaplan-Meier plotter analysis. Results TOP2α and its co-expression genes were highly expressed in HCC (P < 0.001) and detrimental to overall survival of HCC patients (P < 0.001). TOP2α and its co-expression genes were mainly involved in cell mitosis and proliferation, and cell cycle pathway (ID: hsa04110, P = 0.001945). TOP2α and its co-expression genes were mutated in HCC and the mutations were significantly detrimental to overall survival (P = 0.0247) and disease-free survival (P = 0.0265) of HCC patients. High TOP2α expression was positively correlated with the infiltration of B cell (r = 0.459, P < 0.01), CD8+ T cell (r = 0.312, P < 0.01), CD4+ T cell (r = 0.370, P < 0.01), macrophage (r = 0.459, P < 0.01), neutrophil (r = 0.405, P < 0.01), and dendritic cell (r = 0.473, P < 0.01) in HCC. The CD8+ T cell infiltration significantly prolonged the 3- and 5-year survival of HCC patients (all P < 0.05), and CD4+ T cell infiltration significantly shortened the 3-, 5-, and 10-year survival of HCC patients (all P < 0.05) Conclusion TOP2α may be an oncogene, which was associated with poor prognosis of HCC patients and could be used as a biomarker for the prognostic prediction of HCC.

Jin Lu;Shaoguang An;Junjie Ma;Yue Yang;Lei Zhang;Peng Yu;Heng Tao;Yunfan Chen;Haoxuan Zhang

School of Basic Medicine,Bengbu Medical College,Bengbu,Anhui 233030,China;Anhui Key Laboratory of Computational Medicine and Intelligent Health,Bengbu Medical College,Bengbu,Anhui 233030,China;Clinical Medical College,Bengbu Medical College,Bengbu,Anhui 233030,China;Department of Otolaryngology,First Affliated Hospital,Bengbu Medical College,Bengbu,Anhui 233030,China;Department of Surgical Oncology,Second Affliated Hospital,Bengbu Medical College,Bengbu,Anhui 233030,China

中国医学科学杂志（英文版）

[1]Jin Lu;Shaoguang An;Junjie Ma;Yue Yang;Lei Zhang;Peng Yu;Heng Tao;Yunfan Chen;Haoxuan Zhang-.Topoisomerase Ⅱα Gene as a Marker for Prognostic Prediction of Hepatocellular Carcinoma: A Bioinformatics Analysis)[J].中国医学科学杂志（英文版）,2022(04):331-339

Topoisomerase,hsa04110

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