首都医科大学学报 ›› 2015, Vol. 36 ›› Issue (6): 929-935.doi: 10.3969/j.issn.1006-7795.2015.06.017

• 基础研究 • 上一篇    下一篇

MiR-886-5p对宫颈鳞状上皮细胞克隆形成和宫颈癌细胞化学药物治疗的影响

李晶华1, 王明2, 张瑞1, 冯力民1   

  1. 1. 首都医科大学附属北京天坛医院妇产科, 北京 100050;
    2. 首都医科大学附属北京佑安医院妇产科, 北京 100069
  • 收稿日期:2015-07-07 出版日期:2015-12-21 发布日期:2015-12-18
  • 通讯作者: 冯力民 E-mail:lucyfeng1966@163.com
  • 基金资助:
    国家自然科学基金(81101969)。

Effect of the miR-886-5p on the cervical squamous epithelial cell clone formation and cervical cancer chemotherapy

Li Jinghua1, Wang Ming2, Zhang Rui1, Feng Limin1   

  1. 1. Department of Obstetrics and Gynecology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China;
    2. Department of Obstetrics and Gynecology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
  • Received:2015-07-07 Online:2015-12-21 Published:2015-12-18
  • Supported by:
    This study was supported by National Natural Science Foundation of China(81101969).

摘要: 目的 探讨microRNA-886-5p(MiR-886-5p)对宫颈鳞状上皮细胞克隆形成及宫颈癌细胞化学药物治疗(以下简称化疗)的影响。方法 应用基因芯片技术检测宫颈癌及其癌周组织microRNA的表达,筛选出MiR-886-5p在宫颈癌组织中高表达。生物信息系技术分析发现miRNA-886-5p靶向P53通路中多个基因的表达。用MiR-886-5p mimics和带有GFP标签的MiR-886-5p过表达载体稳定转染高危型人乳头瘤病毒(human papilomavirus,HPV16)阳性的永生化人宫颈鳞状上皮细胞H8细胞,应用Western blotting方法检测P53和P14的蛋白表达情况;应用平板克隆形成技术,观察对细胞克隆形成的影响。在宫颈癌SiHa细胞中,加入化疗药物紫杉醇和VP16后,应用real time RT-PCR技术,检测MiR-886-5p的表达情况。结果 过表达 MiR-886-5p后,H8细胞的克隆形成率明显高于阴性对照组,并且降调P53通路中P14和P53蛋白的表达。加入化疗药紫杉醇和VP16后,SiHa细胞中MiR-886-5p表达明显升高。结论 MiR-886-5p与宫颈鳞状细胞增生相关,它降调P14和P53两种蛋白的表达,且与宫颈癌细胞化疗抵抗相关。

关键词: 宫颈鳞状上皮细胞, 宫颈癌, MiR-886-5p, 克隆形成, 化学治疗

Abstract: Objective To explore the effect of the miR-886-5p on the cervical squamous epithelial cell clone formation and cervical cancer chemotherapy. Methods Microassay was carried out for cervical squamous cell carcinoma tissues(CSCCs) and adjacent non-tumor tissues. One of them is miR-886-5p that overexpression in CSCCs. Bioinformatics analysis suggests that P53 pathway genes(Bax, P14, GADD45B and 14-3-3δ) are miR-886-5p target genes. With a GFP tag overexpression of miR-886-5p plasmid we evaluated the formation of cervical epithelial cell clone. Downstream target validation was performed for miR-886-5p. MiR-886-5p was validated by RT-PCR after chemotherapy in SiHa cell. Results Forced expression of one miRNA, miR-886-5p, overexpressed in CSCC tissues lowered expression of the protein P14 and P53, promoted cell clone formation in H8, an HPV16-immortalized human cervical squamous epithelial cell line. After the cervical squamous carcinoma cell line was cultured with different amounts of paclitaxel and VP16, the expression of miR-886-5p was significantly upregulated with the increasing concentration of paclitaxel and VP16. Conclusion MiR-886-5p promotes proliferation of cervical cancer cells and contributes to cervical cancer chemotherapy resistance.

Key words: cervical squamous epithelial cell, cervical cancer cell, MiR-886-5p, clone formation, chemotherapy

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