肺癌患者MPDZ基因异常甲基化的研究

doi:10.3969/j.issn.1004-616x.2015.06.006

癌变·畸变·突变 ›› 2015, Vol. 27 ›› Issue (6): 437-440.doi: 10.3969/j.issn.1004-616x.2015.06.006

肺癌患者MPDZ基因异常甲基化的研究

封杰^1,2, 刘文斌¹, 陈洪强¹, 黄永胜¹, 韩飞¹, 曹佳¹, 刘晋祎¹

1. 第三军医大学军事预防医学院毒理研究所, 重庆 400038;
2. 重庆市人民医院, 重庆 400013

收稿日期:2015-09-09 修回日期:2015-10-21 出版日期:2015-11-30 发布日期:2015-11-30
通讯作者: 刘晋祎,E-mail:jinyiliutmmu@163.com E-mail:jinyiliutmmu@163.com
作者简介:封杰,E-mail:nanbufc@hotmail.com。
基金资助:
国家自然科学基金(81573179)

DNA hypermethylation status of MPDZ gene in lung cancer

FENG Jie^1,2, LIU Wenbin¹, CHEN Hongqiang¹, HUANG Yongsheng¹, HAN Fei¹, CAO Jia¹, LIU Jinyi¹

1. Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing 400038;
2. Chongqing General Hospital, Chongqing 400013, China

Received:2015-09-09 Revised:2015-10-21 Online:2015-11-30 Published:2015-11-30

摘要/Abstract

摘要： 目的:探讨肺癌组织以及相应的外周血浆和痰液中MPDZ基因异常甲基化的情况,以及其在肺癌诊断中的作用。方法:采用甲基化特异性PCR(MSP)方法检测49例肺癌组织、20例癌旁正常组织以及相应的外周血浆和痰液中MPDZ基因甲基化发生情况。结果:49例肺癌组织中MPDZ基因甲基化发生率为67%(33/49),癌旁正常组织中的MPDZ基因甲基化发生率为0(0/20)(P=0.00)。MPDZ基因甲基化检出率与临床分期相关(P=0.039),但与患者的年龄、性别、是否吸烟、肿瘤的分化程度以及肿瘤的病理分类无显著相关(P>0.05)。33例癌组织MPDZ基因发生了甲基化的肺癌患者相应血浆的DNA标本中有25例发生了甲基化,甲基化检出率为76%(25/33);痰液标本中有18例发生了甲基化,甲基化检出率为55%(18/33)。16例癌组织MPDZ基因未甲基化的肺癌患者其对应的血浆和痰液标本未检出该基因甲基化。提示痰液和血浆标本中MPDZ基因甲基化能较好地反映肿瘤组织中该基因的甲基化状况。结论:MPDZ基因在肺癌患者的癌组织中、血浆中及痰液中均有较高比例甲基化检出率,提示MPDZ基因甲基化可能在肺癌的诊断中具有一定的价值。

关键词: MPDZ基因, 肺癌, DNA甲基化, 甲基化特异性PCR

Abstract: OBJECTIVE: To study MPDZ gene hypermethylation in lung cancer tissue,peripheral plasma and sputum,and to explore its relationship with clinicopathologic features. METHODS: Methylation specific PCR was used to detect the methylation of MPDZ gene in 49 cases of lung cancer tissue,20 cases of normal tissue and corresponding blood plasma and sputum samples. RESULTS: The frequency of methylation of MPDZ gene promoter was 67%(33/49) in lung cancer tissues,but not in normal tissues 0(0/20)(P=0.00). The methylation of MPDZ gene was significantly correlated with clinic stages of lung cancer patients(P=0.039),but not correlated with patient's age,sex,smoking,tumor differentiation and pathological classification(P>0.05). In 33 patients with MPDZ hypermethylation in tumor tissue,the same aberrant methylation was detected in 25(76%) of the corresponding plasma and 18(55%) of sputum samples,whereas hypermethylation of MPDZ was not found in the sputum and plasma from the patients with MPDZ unmethylation in tumor sample. CONCLUSION: MPDZ gene has highly methylated in lung cancer tissue,corresponding blood plasma and sputum. The methylation of MPDZ gene may have a certain value in the diagnosis of lung cancer.

Key words: MPDZ gene, lung cancer, DNA methylation, methylation specific PCR

中图分类号:

R730.2

封杰, 刘文斌, 陈洪强, 黄永胜, 韩飞, 曹佳, 刘晋祎. 肺癌患者MPDZ基因异常甲基化的研究[J]. 癌变·畸变·突变, 2015, 27(6): 437-440.

FENG Jie, LIU Wenbin, CHEN Hongqiang, HUANG Yongsheng, HAN Fei, CAO Jia, LIU Jinyi. DNA hypermethylation status of MPDZ gene in lung cancer[J]. Carcinogenesis, Teratogenesis & Mutagenesis, 2015, 27(6): 437-440.

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肺癌患者MPDZ基因异常甲基化的研究

DNA hypermethylation status of MPDZ gene in lung cancer

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