CDKN3在口腔鳞状细胞癌中的预后价值及免疫细胞浸润分析

Prognostic value of CDKN3 and analysis of immune cell infiltration in oral squamous cell carcinoma

目的分析细胞周期蛋白依赖性激活因子3(CDKN3)对口腔鳞状细胞癌(OSCC)预后的预测价值及其与免疫细胞浸润的关系,探索CDKN3在OSCC发生发展中发挥的生物学功能。方法从癌症基因组图谱和基因表达综合数据库中获取OSCC相关RNAseq数据,通过R语言和统计学方法整合分析CDKN3的表达水平、预后价值及与临床病理特征、免疫细胞浸润的关系。通过基因富集分析CDKN3在OSCC中的生物学作用。结果与正常组织比较,CDKN3在OSCC肿瘤组织中高表达(P<0.01),受试者工作特征曲线的曲线下面积为0.955。CDKN3高表达的OSCC患者预后差(P=0.024),CDKN3的表达与病理分期(P<0.05)和组织学分级(P<0.001)存在相关性。免疫细胞浸润分析发现CDKN3的高、低表达组间免疫细胞浸润水平比较,差异有统计学意义(P<0.05)。功能富集分析结果显示,CDKN3与细胞周期密切相关。结论CDKN3可能是OSCC潜在的致癌风险因子,与患者临床病理特征、预后及免疫细胞浸润有关,可能是OSCC的诊断生物标志物和潜在治疗靶点。

Objective To analyze the predictive value of cyclin-dependent activator 3(CDKN3)in the prognosis of oral squamous cell carcinoma(OSCC)and its relationship with immune cell infiltration,and to explore the biological function of CDKN3 in the occurrence and development of OSCC.Methods RNAseq data related to OSCC were obtained from the Cancer Genome Atlas and Gene Expression Omnibus database.The expression level of CDKN3,prognostic value,clinicopathological features and immune cell infiltration were analyzed by R language and statistical methods.Gene enrichment analysis was used to analyze the biological role of CDKN3 in OSCC.Results Compared with normal tissues,CDKN3 was highly expressed in OSCC tumor tissues(P<0.01),and the area under curve for the receiver operating characteristic curve was 0.955.The patients with high expression of CDKN3 had a poor prognosis(P=0.024).The expression of CDKN3 was correlated with pathological stage(P<0.05)and histological grade(P<0.001).There was a significant difference in the level of immune cell infiltration between the CDKN3 high and low expression groups(P<0.05).Functional enrichment analysis showed that CDKN3 was closely related to cell cycle.Conclusion CDKN3 may be a potential carcinogenic risk factor of OSCC,which is related to the clinicopathological characteristics,prognosis and immune cell infiltration of patients.CDKN3 may be a diagnostic biomarker and a potential therapeutic target for OSCC.