癌变·畸变·突变 ›› 2015, Vol. 27 ›› Issue (6): 432-436.doi: 10.3969/j.issn.1004-616x.2015.06.005

• 论著 • 上一篇    下一篇

甲基丙烯酸环氧丙酯致16HBE细胞恶性转化不同时期METTL9基因甲基化状态分析

王全凯1,2, 谢广云1,2, 刘红梅1,2, 许建宁1,2   

  1. 1. 中国疾病预防控制中心职业卫生与中毒控制所, 北京 100050;
    2. 中国疾病预防控制中心化学污染与健康安全重点实验室, 北京 100050
  • 收稿日期:2015-07-21 修回日期:2015-10-10 出版日期:2015-11-30 发布日期:2015-11-30
  • 通讯作者: 许建宁,E-mail:jnx999@263.net E-mail:jnx999@263.net
  • 作者简介:王全凯,E-mail:kylewang@sina.com。
  • 基金资助:
    国家自然基金资助项目(81072318)

METTL9 methylation status in malignant transformation of 16HBE cells induced by glycidyl methacrylate

WANG Quankai1,2, XIE Guangyun1,2, LIU Hongmei1,2, XU Jianning1,2   

  1. 1. National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050;
    2. Key Laboratory of Chemical Safety and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
  • Received:2015-07-21 Revised:2015-10-10 Online:2015-11-30 Published:2015-11-30

摘要: 目的:分析甲基丙烯酸环氧丙酯(GMA)致人支气管上皮(16HBE)细胞恶性转化不同时期甲基转移酶样基因METTL9甲基化状态及其表达情况,并探讨其意义。方法:收获GMA染毒第10代(早期)、20代(中期)、30代(后期)的16HBE细胞,应用甲基化芯片检测METTL9基因在GMA诱导16HBE细胞恶性转化不同时期的甲基化状态,采用实时荧光定量PCR(qPCR)检测该基因在恶性转化不同时期的表达量,并与同期DMSO溶剂对照组细胞比较。结果:甲基化芯片结果显示,对照组第10代和第20代细胞未发生甲基化,第30代细胞发生甲基化;GMA染毒组16HBE细胞在第10代和第20代METTL9基因均发生甲基化(PeakScore>2),而第30代细胞未见甲基化。qPCR结果显示,与同期溶剂对照组相比,GMA染毒组16HBE细胞在第10代和第20代METTL9基因表达量上调(P<0.05);经甲基化转移酶抑制剂5-氮杂-2′-脱氧胞苷(5-Aza-cdr)处理后,该基因与同代龄GMA组细胞相比,第10代和第30代METTL9基因的表达量水平均上升(P<0.05),第20代表达水平下降(P<0.05)。结论:METTL9基因可作为GMA诱导16HBE细胞发生恶性转化前、中期的一个特异分子标志。

关键词: 甲基丙烯酸环氧丙酯, 人支气管上皮细胞, METTL9基因, 甲基化

Abstract: OBJECTIVE: To analyze the methyltransferase like 9(METTL9) methylation status at different stages of malignant transformation of human bronchial epithelial cells(16HBE) induced byglycidyl methacrylate(GMA) and to explore the effect of METTL9 methylation in the process of malignant transformation. METHODS: Cells were harvested th in the 10th generation(early stage),the 20th generation(mid stage) and the 30th generation(later period). To verify the methylation chip result of METTL9 methylation status in the process of malignant transformation,real-time fluorescence quantitative PCR(qPCR) was applied to measure the gene expression levels of METTL9 at different transformed stages,and compared wie control groups(treated with DMSO). RESULTS: Based on the result of methylation chip,methylation of METTL9 gene occurred in the 10th and 20th generations(PeakScore>2). qPCR showed that the levels of gene expression increased in the 10th and 20th generation in GMA group(P<0.05). The level of METTL9 gene expression increased in the 10th generation(P<0.05),while decreased in the 20th generation after treatment with 5-Aza-cdr(P<0.05). CONCLUSION: Methylation status of METTL9 gene promoter could be considered as a stable and specific biomarker in the lately and mid stages of transformation process.

Key words: glycidyl methacrylate, human bronchial epithelial cells, METTL9 gene, methylation

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