首都医科大学学报 ›› 2011, Vol. 32 ›› Issue (5): 645-649.doi: 10.3969/j.issn.1006-7795.2011.05.012

• 基础研究 • 上一篇    下一篇

RNAi构建parp-1基因低表达的石英恶性转化细胞模型

郭伟, 宋珊珊, 田琳, 高艾, 牛丕业, 左昕, 朱钟慧, 吴惠慧   

  1. 首都医科大学公共卫生与家庭医学学院劳动卫生与环境卫生学系,北京 100069
  • 收稿日期:2011-04-22 修回日期:1900-01-01 出版日期:2011-10-21 发布日期:2011-10-21
  • 通讯作者: 田 琳

Construction of parp-1 gene low expression in silica-associated malignant transformation of human bronchial epithelial cells by RNA interference

GUO Wei, SONG Shan-shan, TIAN Lin, GAO Ai, NIU Pi-ye, ZUO Xin, ZHU Zhong-hui, WU Hui-hui   

  1. Department of Occupational and Environmental Health, School of Public Health and Family Medicine, Capital Medical University, Beijing 100069, China
  • Received:2011-04-22 Revised:1900-01-01 Online:2011-10-21 Published:2011-10-21

摘要: 目的 构建多聚腺苷酸二磷酸核糖聚合酶-1〔poly(ADP-ribose)polymerase-1,PARP-1〕基因低表达的石英恶性转化人支气管上皮细胞(M-16HBE)模型。方法 利用RNA干扰(RNA interferencing,RNAi)技术建立parp-1基因低表达的M-16HBE模型;采用反转录PCR(reverse transcription-PCR,RT-PCR)法检测不同组别(空白对照组、阴性对照组和质粒转染组)M-16HBE的parp-1基因mRNA表达情况;应用MTT方法检测细胞的增生活性;应用流式细胞术检测细胞周期的变化情况。结果 质粒转染组M-16HBE的parp-1基因mRNA表达水平较空白对照组及阴性对照组降低,差异有统计学意义(P<0.05),表达量约为正常细胞的45%;阴性对照组与空白对照组M-16HBE的parp-1基因mRNA表达量相比,差异无统计学意义(P>0.05)。与空白对照组相比,质粒转染细胞的增生能力显著增强,S期细胞比例升高了7.8%,G2期细胞比例下降了5.8%,差异均有统计学意义(P<0.05)。结论 Parp-1基因低表达M-16HBE模型构建成功。

关键词: RNA干扰, 多聚腺苷酸二磷酸核糖聚合酶-1基因, 细胞周期

Abstract: Objective To construct poly(ADP-ribose) polymerase-1(PARP-1) gene low expression model in malignant transformation of human bronchial epithelial cell line(M-16HBE) induced by silica. Methods Parp-1 gene low expression model in M-16HBE was constructed by silencing of parp-1 with RNAi, and parp-1 mRNA expression was detected by RT-PCR. The effect of proliferation of cells was detected by MTT assay. Cell cycle was monitored by flow cytometry. Results The expression of parp-1 gene in transfected cells decreased(about 45% of normal cells) significantly, compared with normal cells and the cells transfected with empty vector(P<0.05). The expression of parp-1 gene in normal cells was equal to the cells transfected with empty vector(P>0.05). Compared with normal cells, the effect of proliferation of transfected cells was significantly increased(P<0.05); and the S phase ratio increased by 7.8%(P<0.05) and the G2 phase ratio decreased by 5.8%(P<0.05). Conclusion Parp-1 gene low expression model in M-16HBE was successfully constructed.

Key words: RNA interfering, poly(ADP-ribose) polymerase-1 gene, cell cycle

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