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DOI: 10.3971/j.issn.1000-8578.2018.17.0931
Keywords: A Meta-analysis,Effect of Down-regulation of MLLT3/AF9 Expression on Proliferation and Invasion Abilities of Hepatoma SMMC-7721 Cells,Advances of CXCL12-CXCR4/CXCR7 Biological Axis in Hepatocellular Carcinoma,Effect of IL-4/IL-4R on Biological Behavior of Hepatocellular Carcinoma and Its Underlying Mechanism,Primary Hepatocellular Carcinoma with Isolated Sinonasal Metastasis: One Case Report and Literature Review,Expression of PTEN and EMMPRIN in Lung Adenocarcinoma Tissues and Their Correlation with EGFR Mutation,NDRG2 Inhibits Migration of Breast Cancer Cells Through Upregulating PTEN Expression,Mechanism of Ibuprofen Regulating Migration and Invasion of Liver Cancer QGY-7703 Cells Through PI3K/Akt/mTOR Signaling Pathway,Effects of Silencing B7-H3 Gene on Invasion of Human Hepatocellular Carcinoma Cells
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摘要 目的 检测microRNA-155(miR-155)在肝细胞癌中的表达并探讨其生物学作用及机制。方法 采用荧光定量PCR法检测miR-155在30对肝细胞癌和癌旁组织中的表达。在体外实验中,采用miR-155 mimic过表达miR-155,利用CCK-8和Transwell实验检测细胞增殖和迁移的变化。采用生物信息学和荧光素酶报告基因实验预测和验证miR-155的靶基因人第10号染色体缺失的磷酸酶及张力蛋白同源物基因(PTEN),并分析其生物学作用。应用cBioPortal数据库分析miR-155及PTEN对肝癌患者预后的影响。结果 miR-155在肝癌组织中较癌旁组织表达升高(P<0.0001),过表达miR-155能促进肝癌细胞的增殖和迁移。miR-155高表达患者的疾病无进展生存期(DFS)较低表达组显著降低(P=0.021)。miR-155直接负性调控PTEN的表达,并增强胞内磷脂酰肌醇激酶(PI3K)通路信号。PTEN表达缺失患者的疾病无进展生存期较PTEN表达正常组差(P=0.0133)。结论 miR-155/PTEN调控轴对肝癌的进展发挥促进作用
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