IR@PKUHSC  > 北京大学基础医学院  > 病原生物学系
学科主题基础医学
Aberrant expression of microRNA 155 may accelerate cell proliferation by targeting sex-determining region Y box 6 in hepatocellular carcinoma
Xie, Qing1,2; Chen, Xiangmei1,2; Lu, Fengmin1,2; Zhang, Ting1,2; Hao, Meili1,2,3; Wang, Yongfeng1,2; Zhao, Jingmin4; McCrae, Malcolm A.5; Zhuang, Hui1,2
关键词hepatocellular carcinoma microRNA miR-155 p53 p21waf1 cip1
刊名CANCER
2012-05-01
DOI10.1002/cncr.26566
118期:9页:2431-2442
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Oncology
研究领域[WOS]Oncology
关键词[WOS]CANCER ; MOUSE ; RNA ; MIR-155 ; CATENIN
英文摘要

BACKGROUND: Recent research has suggested that the oncomir microRNA 155 (miR-155) is up-regulated in hepatocellular carcinoma (HCC). In this study, the authors investigated the tumorigenic mechanism of this oncomir in the development of HCC. METHODS: Quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) was conducted to analyze the expressions of miR-155 and its potential target genes in paired tumor tissues and adjacent tumor-free tissues and in disease-free liver tissue samples. The in silico predicted target genes of miR-155 were assessed by dual-luciferase reporting assay, real-time RT-PCR, and Western blot analyses. U6 promoters that drive miR-155 precursor overexpression and miR-155 tough decoy knock-down constructs were used to study its affects on cell proliferation in vitro and on tumor formation in nude mice. RESULTS: Quantitative RT-PCR demonstrated a gradual ascension of miR-155 expression in cirrhotic liver tissues and in HCC tumor tissues compared with low expression levels in normal liver tissues. Ectopic expression of miR-155 in HepG2 cells enhanced its tumorigenesis, whereas depletion of the endogenous miR-155 reversed these tumorigenic properties. Ectopic expression of sex-determining region Y box 6 (SOX6) was able to reverse the growth-promoting property of miR-155. Concordantly, the results demonstrated for the first time that SOX6 is a direct target of miR-155. Further analysis revealed that SOX6 reduced cell growth by up-regulating p21waf1/cip1 expression in a p53-dependent manner. In addition, a decline in p21waf1/cip1 expression caused by miR-155 could be reversed by SOX6 expression. CONCLUSIONS: The current data indicated that SOX6 is a novel target of miR-155 and that miR-155 enhances liver cell tumorigenesis at least in part through the novel miR-155/SOX6/p21waf1/cip1 axis. These findings suggest that miR-155 may be a potential target for HCC treatment. Cancer 2012; 118: 2431-42. (C) 2011 American Cancer Society.

语种英语
WOS记录号WOS:000303044600013
项目编号2012ZX10002-007 ; 30771099
资助机构National S& ; T Major Project for Infectious Diseases Control ; Natural Science Foundation ; University of Massachusetts Medical School
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被引频次:69[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.bjmu.edu.cn/handle/400002259/58232
专题北京大学基础医学院_病原生物学系
北京大学基础医学院
北京大学第三临床医学院_眼科
北京大学临床肿瘤学院_核医学科
作者单位1.Peking Univ, Hlth Sci Ctr, Dept Microbiol, Beijing 100191, Peoples R China
2.Peking Univ, Hlth Sci Ctr, Ctr Infect Dis, Beijing 100191, Peoples R China
3.Harbin Med Univ, Dept Microbiol, Harbin, Peoples R China
4.302 Mil Hosp China, Dept Pathol, Beijing, Peoples R China
5.Univ Warwick, Dept Biol Sci, Coventry CV4 7AL, W Midlands, England
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GB/T 7714
Xie, Qing,Chen, Xiangmei,Lu, Fengmin,et al. Aberrant expression of microRNA 155 may accelerate cell proliferation by targeting sex-determining region Y box 6 in hepatocellular carcinoma[J]. CANCER,2012,118(9):2431-2442.
APA Xie, Qing.,Chen, Xiangmei.,Lu, Fengmin.,Zhang, Ting.,Hao, Meili.,...&Zhuang, Hui.(2012).Aberrant expression of microRNA 155 may accelerate cell proliferation by targeting sex-determining region Y box 6 in hepatocellular carcinoma.CANCER,118(9),2431-2442.
MLA Xie, Qing,et al."Aberrant expression of microRNA 155 may accelerate cell proliferation by targeting sex-determining region Y box 6 in hepatocellular carcinoma".CANCER 118.9(2012):2431-2442.
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