目的 探讨亲环蛋白B(cyclophilin B,PPIB)在脑胶质瘤中的表达与临床病理特征、患者生存期的关系,以及与肿瘤相关巨噬细胞浸润的相关性.方法 基于癌症基因组数据集(The Cancer Genome Atlas,TCGA)数据库资料,比对正常、低级别和高级别脑胶质瘤中PPIB的表达情况,采用免疫组织化学染色方法检测脑胶质瘤病理组织中PPIB的表达;基于TCGA数据库临床病例资料,分析脑胶质瘤PPIB表达与临床病理特征的关系;采用Kaplan-Meier法评估PPIB表达差异对脑胶质瘤患者生存期的影响;免疫荧光法分析脑胶质瘤病理组织中PPIB表达及其与肿瘤相关巨噬细胞浸润的相关性.结果 高级别脑胶质瘤中PPIB的表达明显高于正常组织及低级别脑胶质瘤;PPIB与胶质瘤级别、IDH野生型、1p/19q非共缺失等显著相关(P＜0.001);PPIB高表达患者的总生存期、无进展间隔期均低于PPIB低表达患者;除高级别脑胶质瘤病理组织中PPIB表达升高外,PPIB高表达区域伴随大量肿瘤相关巨噬细胞浸润.结论 相较于低级别胶质瘤,高级别胶质瘤PPIB表达水平更高,且PPIB表达区域存在明显肿瘤相关巨噬细胞浸润.提示PPIB可能作为脑胶质瘤患者独立预后因素,为患者预后判断提供参考.
Expression and Significance of PPIB in Glioma
Objective To investigate the relationship between the expression of cyclophilin B(PPIB)in glioma and clinicopatholog-ical features,patient survival,and the infiltration of tumor-associated macrophages.Methods Based on the Cancer Genome Atlas(TCGA)database,the expression of PPIB in normal,low-grade,and high-grade gliomas was compared,and the expression of PPIB in glioma pathological tissues was detected by immunohistochemical staining.Based on the clinical case data of TCGA database,the relation-ship between PPIB expression and clinicopathological features of glioma was analyzed.Kaplan-Meier method was used to evaluate the im-pact of PPIB expression differences on the survival of glioma patients.Immunofluorescence method was used to analyze the expression of PPIB in the pathological tissues of glioma and its correlation with the infiltration of tumor-associated macrophages.Results The expres-sion of PPIB in high-grade glioma was significantly higher than that in normal tissue and low-grade glioma;PPIB was significantly cor-related with glioma grade,IDH wild type,and 1p/19q non-co-deletion(P＜0.001).The overall survival and progression-free inter-val of patients with high expression of PPIB were lower than those of patients with low expression of PPIB.In addition to the elevated ex-pression of PPIB in the pathological tissues of high-grade glioma,the high-expression area of PPIB was accompanied by a large number of tumor-associated macrophage infiltration.Conclusion Compared with low-grade gliomas,the expression levels of PPIB were higher in high-grade gliomas,and there were significant tumor-associated macrophage infiltration in PPIB-expressing areas.It is suggested that PPIB may serve as an independent prognostic factor for patients with glioma,providing reference for the prognosis of patients judg-ment.
万方数据
维普
