沉默miR-107对乳腺癌细胞侵袭及上皮-间质转化的影响  

Effect of silencing miR-107 on invasion and epithelial-mesenchymal transformation of breast cancer cells

作　　者：代云峰[1] 曹春姚 李昂 任明[1] 魏环兵 贾翠英[1] 郎尉雅[3] 李鹏辉[3] 鲍红光[4] 刘云龙[4] 张旭东 潘洪明[3] DAI Yun-Feng;CAO Chun-Yao;LI Ang(Department of Clinical Laboratory,the Second Affiliated Hospital of Qiqihar Medical College,Qiqihar 161006,Heilongjiang,China)

机构地区：[1]齐齐哈尔医学院附属第二医院检验科,黑龙江齐齐哈尔161006 [2]齐齐哈尔医学院附属第二医院心血管内五科,黑龙江齐齐哈尔161006 [3]齐齐哈尔医学院基础医学院,黑龙江齐齐哈尔161006 [4]齐齐哈尔医学院附属第二医院胸外科,黑龙江齐齐哈尔161006 [5]齐齐哈尔医学院附属第二医院信息中心,黑龙江齐齐哈尔161006

出　　处：《中国老年学杂志》2022年第4期897-901,共5页Chinese Journal of Gerontology

基　　金：国家高技术研究发展计划(863计划)资助项目(2015AA021107);齐齐哈尔市科学技术计划项目(SFGG-201937);齐齐哈尔医学院科研基金项目(QY2016B-17)。

摘　　要：目的探究miR-107对乳腺癌细胞侵袭及上皮-间质转化(EMT)的影响和机制。方法利用荧光定量PCR方法分析miR-107在正常乳腺细胞及乳腺癌细胞系中的表达差异;HS578T细胞分别转染对照miRNA和miR-107抑制剂,利用划痕实验分析细胞迁移能力,用Transwell实验分析细胞侵袭能力,用实时荧光定量PCR方法检测细胞EMT标志物的表达水平,用蛋白质免疫印迹实验检测细胞PTEN/AKT信号通路。结果与正常乳腺细胞相比,miR-107在乳腺癌细胞株中高表达;沉默miR-107的表达抑制HS578T细胞的迁移、侵袭及EMT,促进PTEN/AKT信号通路。结论miR-107在乳腺癌细胞中高表达,沉默miR-107表达通过PTEN/AKT信号通路抑制乳腺癌细胞迁移、侵袭和EMT。Objective To explore the effect and mechanism of miR-107 on invasion and epithelial-mesenchymal transformation(EMT)of breast cancer cells.Methods Expression of miR-107 in normal breast cell and breast cancer cell lines were measured by qPCR;HS578T cells were transfected with control miRNA or miR-107 inhibitor,wound-healing assay was used to detect cell migration,and Transwell assay was used to measure cell invasion capability.The biomarkers of EMT progress were detected by qPCR,and the PTEN/AKT signal pathway were detected by immunoblotting assay.Results MiR-107 was highly expressed in breast cancer cell lines compared with normal breast cells.The migration,invasion and EMT of HS578T cells were inhibited by the silencing of Mir-107 expression,as well as the PTEN/AKT signaling pathway.Conclusions The expression of miR-107 is up-regulated in breast cancer cells.Silencing miR-107 suppress breast cancer cell migration,invasion and EMT through PTEN/AKT signals.

关 键 词：miR-107 乳腺癌 侵袭 上皮-间质转化 

分 类 号：R737.9[医药卫生—肿瘤]