摘要
目的探究非小细胞肺癌(non-small-cell lung cancer,NSCLC)中程序性死亡配体1(programmed death-ligand 1,PDL1)的表达情况及其与患者临床病理特征之间的关系。方法采用免疫组织化学检测107例NSCLC组织中的PD-L1表达,结合临床资料分析PD-L1表达和临床病理特征的关系。利用癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库里的NSCLC数据分析肿瘤组织和癌旁组织中PD-L1 mRNA表达差异。结果107例NSCLC中,肺腺癌74例,肺鳞癌33例。肺腺癌和肺鳞癌组织中PD-L1的表达阳性率分别为18.9%(14/74)和57.6%(19/33)。生物信息学分析表明,与癌旁组织比较,PD-L1在肺腺癌中表达发生下调(logFC=-0.703,P<0.01),而在肺鳞癌中PD-L1差异无统计学意义(P=0.078)。74例肺腺癌患者的PD-L1表达在T分期(χ^(2)=8.955,P=0.011)和TNM分期(χ^(2)=6.166,P=0.046)方面比较,差异均具有统计学意义,而33例肺鳞癌患者的PD-L1表达在N分期(χ^(2)=3.860,P=0.049)和TNM分期(χ^(2)=7.649,P=0.022)方面比较,差异均具有统计学意义。结论肺鳞癌中PD-L1表达阳性率高于肺腺癌。在2种不同的NSCLC亚型中PD-L1表达水平在不同TNM分期中有差异。
Objective To explore the expression of programmed death-ligand 1(PD-L1)in non-small-cell lung cancer(NSCLC)and its correlation with the clinicopathological characteristics of patients.Methods Immunohistochemistry was used to detect the expression of PD-L1 in 107 NSCLC tissues,and the relationship between PD-L1 expression and clinicopathological characteristics was analyzed based on the clinical data.The NSCLC data in The Cancer Genome Atlas(TCGA)database were used to analyze the difference of PD-L1 mRNA expression in tumor tissues and adjacent tissues.Results Among the 107 NSCLC cases,74 cases were lung adenocarcinoma and 33 were lung squamous cell carcinoma.The positive rates of PD-L1 expression in lung adenocarcinoma and lung squamous cell carcinoma were 18.9%(14/74)and 57.6%(19/33),respectively.Bioinformatics analysis showed that PD-L1 expression was down-regulated in lung adenocarcinoma compared with adjacent tissues(logFC=-0.703,P<0.01),but there was no statistically significant difference in the change of PD-L1 in lung squamous cell carcinoma(P=0.078).Combined with the clinicopathological data,the PD-L1 expression in lung adenocarcinoma was compared in terms of T stage(χ^(2)=8.955,P=0.011)and TNM stage(χ^(2)=6.166,P=0.046),and the difference was statistically significant.The PD-L1 expression in lung squamous cell carcinoma was compared in terms of N stage(χ^(2)=3.860,P=0.049)and TNM stage(χ^(2)=7.649,P=0.022),and the difference was statistically significant.Conclusions The positive rate of PD-L1 expression in lung squamous cell carcinoma is higher than that in lung adenocarcinoma.The PD-L1 expression level in both subtypes of NSCLC is different in terms of TNM stage.
作者
游星兰
任建敏
毛卫波
黄建胜
You Xinglan;Ren Jianmin;Mao Weibo;Huang Jiansheng(Department of Clinical Laboratory,Lishui Central Hospital,Lishui 323000,China;Department of Pathology,Lishui Central Hospital,Lishui 323000,China)
出处
《实用肿瘤杂志》
CAS
2021年第6期520-524,共5页
Journal of Practical Oncology
基金
浙江省自然科学基金(LY18H160059)
浙江省自然科学青年基金(LQ17H080001)。
关键词
非小细胞肺癌
肺腺癌
肺鳞癌
程序性死亡配体1
non-small-cell lung cancer
lung adenocarcinoma
lung squamous cell carcinoma
programmed death-ligand 1