干扰素诱导基因IFIT1与卵巢癌免疫浸润及预后的相关性  

Correlation of interferon-induced gene IFIT1 with immune infiltration and prognosis in ovarian cancer

作　　者：王瑞伟 李凤杰 梁小龙 周鑫 刘丽萍 李秋蓉 何明敏 李宇迪 WANG Ruiwei;LI Fengjie;LIANG Xiaolong;ZHOU Xin;LIU Liping;LI Qiurong;HE Mingmin;LI Yudi(Department of Obstetrics and Gynecology,First Affiliated Hospital,Army Medical University(Third Military Medical University),Chongqing,400038,China)

机构地区：[1]陆军军医大学(第三军医大学)第一附属医院妇产科,重庆400038

出　　处：《陆军军医大学学报》2024年第10期1132-1141,共10页Journal of Army Medical University

基　　金：重庆市卫生适宜技术推广项目(2021jstg010)。

摘　　要：目的探讨干扰素诱导基因IFIT1与卵巢癌免疫浸润及预后的相关性。方法通过GEO数据库筛选肿瘤免疫相关基因,Kaplan-Meier与Prognoscan预后数据库筛选与卵巢癌预后显著相关的差异基因。GEPIA、Human Protein Atlas与Timer数据库分析IFIT1在卵巢癌组织与正常组织中的表达差异。UALCAN数据库分析IFIT1在不同分级和分期的卵巢癌组织中的表达情况。David数据库对String和Genemania数据库筛选的相互作用基因与蛋白进行GO富集分析。Timer和Tisidb数据库相互验证IFIT1与免疫细胞的相关性。IFIT1干扰质粒成功构建后,利用IFIT1干扰稳转株构建裸鼠移植瘤模型,观察IFIT1敲降后肿瘤生长情况,免疫组化检测中性粒细胞浸润。结果GEO数据库、Kaplan-Meier与Prognoscan预后数据库筛选出IFIT1是与卵巢癌预后显著负相关的肿瘤免疫基因。GEPIA、Human Protein Atlas、Timer数据库以及UALCAN数据库表明IFIT1在卵巢癌组织中表达显著高于正常卵巢组织(P<0.05),但与肿瘤的分期、分级并不存在显著相关性。String、Genemania、David数据库分析发现IFIT1的互作基因与蛋白富集于2’-5’寡聚腺苷酸合成酶的活化、病毒防御、先天性免疫等过程。Timer数据库表明IFIT1与卵巢癌中CD8+T细胞、B细胞、树突状细胞、中性粒细胞和巨噬细胞浸润呈正相关,其中与中性粒细胞相关性最为明显(P<0.001)。Tisidb与GSCA均验证了IFIT1与卵巢癌组织的中性粒细胞浸润呈高度正相关(P<0.05)。RT-qPCR和Western blot证明卵巢癌细胞中IFIT1被成功敲降后,IFIT1干扰细胞的移植瘤生长显著减缓(P<0.05),肿瘤中性粒细胞浸润减少。结论IFIT1可能促进中性粒细胞浸润影响卵巢癌的恶性进程。Objective To analyze the correlation of interferon-induced protein with tetratricopeptide repeats 1(IFIT1)with immune infiltration and prognosis of ovarian cancer(OC).Methods GEO database was employed to select the tumor immune related genes,and Kaplan-Meier and Prognoscan databases were used to identify the genes significantly associated with OC prognosis.The differential expression of IFIT1 between OC tissue and normal tissue were confirmed with GEPIA,Human Protein Atlas,and Timer databases.The expression level of IFIT1 in OC tissues with different grades and stages were analyzed in the UALCAN database.In addition,based on David database,GO enrichment analysis was used to analyze the interacting genes and proteins of IFIT1 in the String and Genemania databases.Timer and Tisidb databases verified the correlation between IFIT1 and immune cells mutually.Finally,after IFIT1 knockdown xenograft model was constructed based on lentiviral vector of IFIT1 shRNA,the tumor growth was observed in the transplanted nude mice,and infiltration of neutrophils was observed with immunohistochemical assay.Results FIT1,a tumor immune gene,selected from the GEO database,Kaplan-Meier and Prognoscan databases,was negatively correlated with the OC prognosis.GEPIA,Human Protein Atlas,Timer database,and UALCAN database indicated that the expression level of IFIT1 was significantly higher in the OC tissues than the normal ovarian tissues,and had no obvious correlation with tumor stage and grade.Analysis in String,Genemania,and David database found the interaction genes and proteins of IFIT1 were enriched in activation of 2’-5’oligonucleotide synthase,virus defense,and innate immunity,and other processes.The Timer database presented that IFIT1 was positively correlated with the infiltration of CD8+T cells,B cells,dendritic cells,neutrophils,and macrophage in OC,with neutrophils having the most significant correlation.Tisidb and GSCA also confirmed the positive correlation between IFIT1 and neutrophil infiltration in OC(P<0.05).RT-qPCR

关 键 词：卵巢癌 干扰素诱导的四肽重复蛋白1 生信分析 免疫浸润 中性粒细胞 

分 类 号：R394.3[医药卫生—医学遗传学] R73-37[医药卫生—基础医学] R737.31