胃癌组织SERPINH1基因表达水平与其病理及预后关系研究

Association between SERPINH1 gene expression level in gastric cancer tissue with pathology and prognosis

目的探讨胃癌组织SERPINH1基因表达水平与其病理及预后的关系;探讨SERPINH1在胃癌中的作用机制。方法收集TCGA和GEO公共数据库的胃癌数据,对胃癌组织样本的SERPINH1基因表达数据及其对应的临床信息进行病理指标的回顾性分析和生存分析;利用基因集富集分析(GSEA)方法分析与SERPINH1表达相关的功能性基因集合,探究SERPINH1的作用机制。结果 421例胃癌样本中,SERPINH1高表达组与低表达组之间肿瘤分级、N分期、转移无显著性差异(P>0.05),但SERPINH1高表达与肿瘤浸润深度(T分期)显著相关(P=0.049),表达水平越高,浸润深度越大。生存分析中,SERPINH1高表达患者的预后明显差于低表达患者[P<0.001,HR(95%CI):1.97(1.61~2.41)]。基因集富集分析发现,SERPINH1高表达的样本中富集了肿瘤信号通路、肿瘤微环境等相关基因集。69例胃癌及癌旁组织的基因表达芯片数据也提示,SERPINH1在胃癌组织中的表达明显升高(P<0.000 1),且具有较大诊断价值(AUC=0.988 1)。结论 SERPINH1基因高表达与胃癌的发生、发展相关,具有较大的临床意义。

Objective To investigate the association between SERPINH1 gene expression in gastric cancer tissue with the pathology and prognosis and its action mechanism in gastric cancer.Methods The gastric cancer data in the TCGA and GEO public databases were collected,and the retrospective analysis and survival analysis were conducted on the SERPINH1 expression data of the tumor tissue samples and related clinical information;the gene set enrichment analysis（GSEA） was used to analyze the SERPINH1 expression related functional gene sets and to investigate the SERPINH1 action mechanism.Results In 421 cases of gastric cancer sample,the SERPINH1 expression level had no significant differences with the tumor grade,N stage and metastasis.However,its high expression was significantly correlated with the tumor invasion depth（T stage）（P=0.049）.The higher the expression level,the preater the invasion depth.In the survival analysis,the patients with high SERPINH1 expression showed a poorer prognosis than those with low SERPINH1 expression[P〈0.001,HR（95%CI）：1.97 （1.61-2.41）].The gene set enrichment analaysis found that the related gene sets such as tumor signal pathway and tumor microenvironment were enriched in the SERPINH1 high expression samples.The gene expression chip data in 69 cases of gastric cancer and paracancerous tissue also suggested that SERPINH1 was highly expressed in gastric cancer （P〈0.000 1） with a greater diagnostic value （AUC=0.988 1）.Conclusion High expression of SERPINH1 is correlated with the occurrence and development of gastric cancer,and has a greater clinical significance.