中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (2): 220-224.doi: 10.3969/j.issn.2095-4344.2015.02.011

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

在Hela细胞中验证miRNA-21对TLR4的调控

赵  婧1,岳  鹏2,黄家芳1,汪玉涛1,马  婷1,陈宝荣1   

  1. 1北京航天总医院检验科,北京市  100076;2防化学院门诊部,北京市  102205
  • 收稿日期:2014-10-23 出版日期:2015-01-08 发布日期:2015-01-08
  • 通讯作者: 陈宝荣,主任技师,北京航天总医院检验科,北京市 100076
  • 作者简介:赵婧,女,1985年生,宁夏回族自治区银川市人,汉族,2012年宁夏医科大学毕业,硕士,医师,主要从事临床检验工作。 并列第一作者:岳鹏,男,1983年生,河北省秦皇岛市人,汉族,2006年解放军第四军医大学毕业,医师。

MicroRNA-21 for regulation of TLR4 in Hela cells

Zhao Jing1, Yue Peng2, Huang Jia-fang1, Wang Yu-tao1, Ma Ting1, Chen Bao-rong1   

  1. 1Department of Clinical Laboratory, Beijing Aerospace General Hospital, Beijing 100076, China; 2The Clinic of the Institute of Chemical Defence, Beijing 102205, China
  • Received:2014-10-23 Online:2015-01-08 Published:2015-01-08
  • Contact: Chen Bao-rong, Chief technician, Department of Clinical Laboratory, Beijing Aerospace General Hospital, Beijing 100076, China
  • About author:zhao Jing, Master, Physician, Department of Clinical Laboratory, Beijing Aerospace General Hospital, Beijing 100076, China Yue Peng, Physician, the Clinic of the Institute of Chemical Defence, Beijing 102205, China Zhao Jing and Yue Peng contributed equally to this work.

摘要:

背景:miRNA通过调节特异靶基因的表达,在疾病的发展及预后中起着重要作用。
目的:探索miRNA-21在宫颈癌Hela细胞中对TLR4基因的调控关系。
方法:通过miRNA靶基因预测网站寻找可能与miRNA-21相互作用的靶基因,利用已构建的携带pri-miRNA-21基因重组腺病毒载体,包装并大量扩增病毒感染Hela细胞,检测荧光蛋白的表达水平,提取感染48 h蛋白,通过Western印迹检测TLR4蛋白表达。从蛋白水平验证在Hela细胞中miRNA-21与靶基因TLR4的靶向调控关系。
结果与结论:100 MOI的重组腺病毒pAd/pri-miRNA-21、pAd/neg可以成功感染Hela细胞。生物信息学方法显示miRNA-21和TLR4存在可能的结合位点。发现感染pAd/pri-miRNA-21组与对照组pAd/neg及空白组相比,TLR4蛋白的表达量明显降低。证实了miRNA-21可以负调节靶基因TLR4的表达。

 


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 组织工程, 重组腺病毒载体, pri-miRNA-21, TLR4基因, Hela细胞, 靶基因

Abstract:

BACKGROUND: MicroRNAs (miRNA) through regulating specific target gene mRNA expression play important roles in different processes of diseases.
OBJECTIVE: To study the interaction of miRNA-21 with its target gene TLR4 in Hela cells.
METHODS: The candidate target gene of miRNA-21 was determined according to miRNA analysis databases. The constructed recombinant adenovirus vector carrying pri-miRNA-21 gene was used, which could package and amplify viruses to transfect Hela cells. Then, the expression of fluorescent proteins was detected. Forty-eight hours after transfection of miRNA-21 or control, extracted proteins were used for detection of TLR4 protein using western blot assay.
RESULTS AND CONCLUSION: Recombinant adenoviruses pAd/pri-miRNA-21 and pAd/neg at 100 MOI could successfully infect Hela cells. Bioinformatic analysis suggested several possible binding sites between miRNA-21 and TLR4. The experimental results showed that miRNA-21 down-regulated TLR4 at protein levels, indicating that miRNA-21 can interfere with the expression of TLR4 target gene.

 


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: Genes, Toll-Like Receptor 4, Hela Cells, MicroRNAs

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