TREM1在食管癌中的表达意义及促进食管癌转移的相关机制研究

Expression Significance of TREM1 in Esophageal Cancer and the Related Mechanisms of Promoting Esophageal Cancer Metastasis

目的分析髓样细胞触发受体1(triggering receptors expressed on myeloid cells-1,TREM1)在食管癌中的表达情况以及与患者总体生存率的关系,并探究其对食管癌KYSE30细胞迁移能力的影响。方法通过生物信息学及临床标本分析TREM1在肿瘤组织中的表达情况及与患者预后的关系;选择KYSE30细胞,将细胞分为阴性对照(NC)组、阴性对照+脂多糖(NC+LPS)组、干扰TREM1组、干扰TREM1+脂多糖组。采用Transwell实验比较不同组别细胞增殖和迁移能力的变化;采用Western blot法检测不同组别间上皮间充质转化(epithelial-mesenchymal transition,EMT)相关蛋白的变化;采用实时荧光定量聚合酶链反应(real-time quantitative polymerase chain reaction,RT-qPCR)比较不同组别细胞白细胞介素-1β(interleukin-1β,IL-1β)、白细胞介素-6(interleukin-6,IL-6)、白细胞介素-8(interleukin-8,IL-8)的变化;过表达TREM1的同时干扰IL-6,比较此时EMT相关蛋白的变化。结果TREM1在食管癌组织和患者血清中表达丰度较高,并与患者的淋巴结转移和总体生存率有关;TREM1可以促进KYSE30细胞的侵袭和转移,相关机制可能是通过促进IL-6的表达进而启动食管癌细胞EMT。结论TREM1在食管癌组织中高表达并通过上调IL-6促进肿瘤EMT从而有利于食管癌的侵袭和转移,导致患者预后不良。

Objective To analyze the expression of triggering receptors expressed on myeloid cells-1(TREM1)in esophageal cancer and its relationship with the overall survival rate of patients,and to explore its effect on the migration ability of KYSE30 cell in e-sophageal cancer.Methods The expression of TREM1 in tumor tissue and its relationship with patient prognosis were analyzed by bioin-formatics and clinical specimens.KYSE30 cells were selected and divided into negative control(NC)group,negative control+lipopo-lysaccharide(NC+LPS)group,interference TREM1 group,interference TREM1+lipopolysaccharide group.Compare the changes in cell proliferation and migration ability of different groups using Transwell method;Western blot was used to detect changes in EMT-relat-ed proteins among different groups;real-time quantitative polymerase chain reaction(RT-qPCR)was used to compare interleukin-1β(IL-1β),interleukin-6(IL-6)and interleukin-8(IL-8)of different groups of cells;overexpression of TREM1 interfered with IL-6,and the changes in EMT-related proteins were compared at this time.Results TREM1 was highly expressed in esophageal cancer tissue and serum,and was associated with lymph node metastasis and overall survival rate in patients;TREMl can promote the in-vasion and metastasis of KYSE30 cells,and the related mechanism may be by promoting the expression of IL-6,thereby initiating EMT in esophageal cancer cells.Conclusion TREMl is highly expressed in esophageal cancer tissue,and promotes tumor EMT through up-regulation of IL-6,which is beneficial for the invasion and metastasis of esophageal cancer,leading to poor prognosis in patients.