硒蛋白硫氧还蛋白还原酶3对肿瘤患者生存预后的影响

目的 探讨硒蛋白硫氧还蛋白还原酶3(TXNRD3)在人类33种恶性肿瘤中的表达情况,并分析其对33种肿瘤生存预后的影响。方法 利用基因型-组织表达研究项目数据库、癌症细胞系百科全书数据库和癌症基因组图谱数据库,从硒蛋白基因TXNRD3出发,探讨其在人类33种恶性肿瘤中的表达情况,并分析其对33种肿瘤生存预后的影响,探讨TXNRD3与肿瘤微环境中的免疫细胞及免疫浸润的相关性,以及与免疫新抗原、免疫检查点、肿瘤突变负荷和微卫星不稳定性等的相关性,根据TXNRD3基因表达水平将人类肿瘤样本分为高、低表达组,并且对其进行生物功能和信号通路的富集分析。结果 多个数据库的差异分析结果显示TXNRD3在15种肿瘤中高表达。生存分析显示TXNRD3与胰腺癌患者预后不良显著相关。此外,TXNRD3的表达水平与肿瘤免疫浸润相关,也与免疫新抗原、免疫检查点基因、肿瘤突变负荷、微卫星不稳定性相关。TXNRD3影响DNA错配修复基因的表达。通过基因集富集分析显示TXNRD3参与调节许多涉及肿瘤代谢和肿瘤免疫的信号通路。结论 TXNRD3在肿瘤中广泛表达,TXNRD3对多种肿瘤的生存预后和治疗具有临床价值,揭示了TXNRD3在肿瘤靶向治疗中的潜力,表明TXNRD3在多种肿瘤中是一种很有前景的肿瘤预测生物标志物。

Effect of Selenoprotein Thioredoxin Reductase 3 on the Survival Prognosis of Tumor Patients

Objective To investigate the expression of thioredoxin reductase 3(TXNRD3),a selenoprotein,in 33 human malignant tumors and then analyze its effect on the survival prognosis. Methods We employed the genotype-tissue expression project database,the cancer cell line encyclopedia,and the cancer genome atlas to explore the expression of TXNRD3 gene in 33 human malignant tumors and analyze its impact on the survival prognosis.Further,we explored the correlations of TXNRD3 with immune cells and immune infiltration in the tumor microenvironment,as well as with neoantigens,immune checkpoint genes,tumor mutational burden,and microsatellite instability.Subsequently,human samples were classified into high-and low-expression groups according to TXNRD3 gene expression levels,and the enrichment analysis of biological functions and signaling pathways was performed. Results The analysis with multiple databases showed that TXNRD3 was highly expressed in 15 tumors.The survival analysis showed that TXNRD3 was significantly associated with poor prognosis in pancreatic cancer patients.In addition,the expression level of TXNRD3 was correlated with immune infiltration in tumor microenvironment,neoantigens,immune checkpoint genes,tumor mutational burden,and microsatellite instability.TXNRD3 affected the expression of DNA mismatch repair genes.The gene set enrichment indicated that TXNRD3 was involved in regulating multiple signaling pathways associated with tumor metabolism and tumor immunity. Conclusion TXNRD3 is widely expressed in tumors and has a clinical value for the survival prognosis prediction and treatment of multiple tumors,demonstrating the potential of being a promising biomarker for targeted treatment of multiple tumors.