癌变·畸变·突变 ›› 2009, Vol. 21 ›› Issue (1): 1-005.doi: 10.3969/j.issn.1004-616x.2009.01.001

• 论著 •    下一篇

甲基丙烯酸环氧丙酯致人支气管上皮恶性转化细胞DNA修复基因点突变的研究

董 琳,李 瑛,王全凯,孙金秀,许建宁   

  1. 中国疾病预防控制中心职业卫生与中毒控制所,北京 100050
  • 收稿日期:2008-08-29 修回日期:2008-11-16 出版日期:2009-01-30 发布日期:2009-01-30

Point Mutation of DNA Repair Genes of Human Bronchial Epithelial Cells Malignant Transformation Induced by Glycidyl Methacrylate

DONG Lin, LI Ying, WANG Quan-kai, SUN Jin-xiu, XU Jian-ning   

  1. National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention,Beijing 100050,China
  • Received:2008-08-29 Revised:2008-11-16 Online:2009-01-30 Published:2009-01-30

摘要: 背景与目的: 研究甲基丙烯酸环氧丙酯(glycidyl methacrylate,GMA)致人支气管上皮(16HBE)恶性转化细胞DNA修复基因点突变情况。 材料与方法: 采用聚合酶链式反应-限制性片段长度多态性方法(PCR-RFLP)检测GMA致16HBE恶性转化细胞DNA修复基因hMSH2、XRCC1、XPD及XRCC3的重要位点的突变情况,并以DNA测序方法加以验证。 结果: 16HBE细胞hMSH2 IVS12-6(T>C)位点发生了突变,由野生基因型TT型突变为TC基因型,其它位点未检测到突变。DNA测序结果相符。 结论: 错配修复基因hMSH2 IVS12-6(T>C)位点的突变可能为GMA诱导人支气管上皮细胞恶性转化过程中的重要起始分子事件之一。

关键词: 甲基丙烯酸环氧丙酯, DNA修复基因, 点突变, 恶性转化

Abstract: BACKGROUND AND AIM: To examine the mutation of DNA repair genes of human bronchial epithelial cells malignant transformation induced by glycidyl methacrylate. MATERIALS AND METHODS: To evaluate the mutation of DNA repair genes XRCC1, hMSH2, XPD and XRCC3 by polymerase chain reaction-restriction fragments length polymorphism(PCR-RFLP), and the result was verified by the DNA sequencing. RESULTS: The mutation of hMSH2 IVS12-6 (T>C) was observed, while mutations in the other genes were not found.The results from PCR-RFLP and DNA sequencing were consistent. CONCLUSION:The mutation of DNA repair genes hMSH2 IVS12-6 (T>C)might be important and an initation step during the malignant transformation of human bronchial epithelial cells induced by glycidyl methacrylate.

Key words: glycidyl methacrylate, DNA repair genes, point mutation, mglignant transformation