乳腺浸润性小叶癌组织中miR-211-5p、SETBP1的表达及其意义

Expression and significance of miR-211-5p and SETBP1 in the tissue of infiltrating lobular carcinoma of the breast

目的检测乳腺浸润性小叶癌(ILC)组织中与miR-211-5p,SET结合蛋白1(SETBP1)的表达情况,并探讨两者在ILC中表达的临床意义。方法收集2019年1月至2020年9月海南医学院第一附属医院诊治的82例女性ILC患者的临床病理资料。应用荧光定量PCR检测癌组织和癌旁组织中miR-211-5p、SETBP1的表达水平;分析miR-211-5p、SETBP1的表达与ILC患者临床病理特征的关系;采用Pearson线性相关分析miR-211-5p与SETBP1在ILC中表达的相关性。采用生物信息学软件预测miR-211-5p与SETBP1的结合位点。结果ILC中miR-211-5p的表达低于癌旁组织,差异有统计学意义(P<0.05)。ILC中SETBP1的表达高于癌旁组织,差异有统计学意义(P<0.05)。与肿瘤TNM分期Ⅰ~Ⅱ期ILC癌组织比较,肿瘤分期Ⅲ~Ⅳ期的ILC癌组织中miR-211-5p表达显著较低,而SETBP1的表达显著较高(P<0.05)。与无腋淋巴转移ILC癌组织比较,伴腋淋巴转移的ILC癌组织中miR-211-5p表达显著较低,而SETBP1的表达显著较高(P<0.05)。ILC癌组织中miR-211-5p与SETBP1的表达呈负相关(r=-0.573,P<0.05)。生物信息学软件预测SETBP1的3’UTR区第374至381个碱基处存在与miR-211-5p潜在的互补结合位点。结论miR-211-5p在ILC癌组织中表达降低,SETBP1在ILC癌组织中表达升高,miR-211-5p、SETBP1的表达均与乳腺癌患者的肿瘤分期及腋淋巴结转移相关,共同参与ILC的进展,可能是ILC的诊断治疗靶点。

Objective To detect the expression of miR-211-5p and SET binding protein 1(SETBP1)in the tissue of infiltrating lobular carcinoma(ILC)of the breast,and to explore the clinical significance of their expression in ILC.Methods The clinicopathological data of 82 female patients with ILC treated in the First Affiliated Hospital of Hainan Medical University from January 2019 to September 2020 were collected.Fluorescence quantitative PCR was used to detect the expression levels of miR-211-5p and SETBP1 in cancer tissues and adjacent tissues.The relationship between the expression of miR-211-5p and SETBP1 and the clinicopathological features of ILC patients was analyzed.Pearson linear correlation was used to analyze the correlation between miR-211-5p and SETBP1 expression in ILC.Bioinformatics software was used to predict the binding sites of miR-211-5p and SETBP1.Results The expression of miR-211-5p in ILC was lower than that in adjacent tissues,and the difference was statistically significant(P<0.05).The expression of SETBP1 in ILC was higher than that in adjacent tissues,and the difference was statistically significant(P<0.05).Compared with tumor TNM stageⅠtoⅡILC cancer tissues,miR-211-5p expression was significantly lower and SETBP1 expression was significantly higher in tumor TNM stageⅢtoⅣILC cancer tissues(P<0.05).Compared with ILC cancer tissues without axillary metastasis,miR-211-5p expression was significantly lower in ILC cancer tissues with axillary metastasis,while SETBP1 expression was significantly higher(P<0.05).The expression of miR-211-5p was negatively correlated with SETBP1 in ILC carcinoma tissues(r=-0.573,P<0.05).Bioinformatics software predicted the existence of potential complementary binding sites with miR-211-5p at bases 374 to 381 in the 3’UTR region of SETBP1.Conclusion The expression of miR-211-5p is decreased in ILC cancer tissues,and SETBP1 is increased in ILC cancer tissues.The expressions of miR-211-5p and SETBP1 are correlated with tumor stage and axillary lymph node metastasis in breast cancer patients,and they are both involved in the progression of ILC,which may be diagnostic and therapeutic targets of ILC.