DNA methylation microarray-based screening of epigenetically masked genes in patients with anti-tuberculosis drug-induced liver injury

Yuhong LI; Lianli JIAO; Mingyuan HAO; Qi REN; Lihua CUI; Tiesheng HAN; Guoying ZHENG; Fumin FENG

doi:10.16016/j.1000-5404.201810029

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DNA methylation microarray-based screening of epigenetically masked genes in patients with anti-tuberculosis drug-induced liver injury

Clinical Medicine | 更新时间：2026-01-09

- DNA methylation microarray-based screening of epigenetically masked genes in patients with anti-tuberculosis drug-induced liver injury
- Journal of Third Military Medical University Vol. 41, Issue 4, Pages: 353-359(2019)
- 作者机构：
  
  1.063210 河北唐山, 华北理工大学公共卫生学院，河北省煤矿卫生与安全重点实验室
  2.162650 内蒙古呼伦贝尔，呼伦贝尔市传染病医院检验科
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(81670525);Graduate Student Innovation Fund of North China University of Science and Technology(CXZZBS2017128)
- DOI：10.16016/j.1000-5404.201810029
  CLC： R394-33;R446.7;R575
- Received：09 October 2018，
  
  Revised：2018-12-07，
  
  Published：28 February 2019
- 稿件说明：
移动端阅览
Yuhong LI, Lianli JIAO, Mingyuan HAO, et al. DNA methylation microarray-based screening of epigenetically masked genes in patients with anti-tuberculosis drug-induced liver injury[J]. Journal of Third Military Medical University, 2019, 41(4): 353-359.
DOI：

Yuhong LI, Lianli JIAO, Mingyuan HAO, et al. DNA methylation microarray-based screening of epigenetically masked genes in patients with anti-tuberculosis drug-induced liver injury[J]. Journal of Third Military Medical University, 2019, 41(4): 353-359. DOI： 10.16016/j.1000-5404.201810029.

摘要

目的

采用基因甲基化芯片技术筛选抗结核药物性肝损伤(anti-tuberculosis drug induced liver injury，ADLI)患者与非肝损伤患者间DNA差异甲基化基因位点。探讨DNA甲基化与ADLI发病机制的关系。

方法

选取2016年1月至2017年7月间唐山市第四医院治疗的肺结核初治患者共137例，分为ADLI组(

=65)、非ADLI组(

=72)。收集研究对象的临床一般资料及全血标本。选择其中14例(7例ADLI，7例非ADLI)患者，提取全血标本的DNA，利用Illumina 850K芯片技术检测病例组和对照组DNA的差异甲基化情况。对芯片筛选出差异较大的甲基化基因DUSP22、HLA-C，进一步在剩余的65例病例组和58例对照组中采用甲基化特异PCR(MSP)方法验证甲基化水平，并采用荧光定量PCR检测DUSP22、HLA-C基因的mRNA水平。

结果

共检测853 307个CpG位点，病例组和对照组差异显著的位点共1 012个，其中高甲基化位点254个，低甲基化位点758个，主要位于基因体区。聚类分析结果显示，在细胞黏附、金属离子结合等过程中存在大量甲基化差异基因。病例组与对照组人类双特异性磷酸酶DUSP22基因、人类白细胞抗原HLA-C基因的甲基化率差异均有统计学意义(65.6%

36.9%、37.9%

58.5%，

0.05)，对照组中DUSP22 mRNA表达水平高于病例组，而HLA-C mRNA表达水平低于病例组。

结论

外周血中DUSP22、HLA-C基因DNA甲基化与ADLI的发生相关。

Abstract

Objective

To investigate the differentially methylated genes between patients with anti-tuberculosis drug induced liver injury (ADLI) and patients without hepatic injury using DNA methylation microarrays and explore the relationship between DNA methylation and ADLI.

Methods

This study was conducted among 137 patients with newly diagnosed pulmonary tuberculosis (including 65 patients with ADLI and 72 without ADLI) treated in the Fourth Hospital of Tangshan City between January

2016 and July

2017. The clinical data were collected and whole blood samples were obtained from all the patients

and 14 patients

including 7 with ADLI and 7 without ADLI

were selected for examination of DNA methylation status using Illumina 850K bead-chip. The methylation status of the 2 differentially methylated genes

DUSP22 and HLA-C

which were identified by analysis of the microarray data

were verified in the remaining cases using methylation-specific PCR (MSP); RT-PCR was used to detect the mRNA levels of DUSP22 and HLA-C genes in all the patients.

Results

We analyzed a total of 853 307 loci and identified 1 012 differential methylated loci between ADLI group and non-ADLI group

including 254 hypermethylated and 758 hypomethylated loci

located mainly in the gene body regions. Cluster analysis showed that a large number of differentially methylated genes were involved in the process of cell adhesion and metal ion binding. MSP verified that the methylation rates of DUSP22 and HLA-C genes differed significantly between ADLI group and non-ADLI group (65.6%

36.9%; 37.9%

58.5%; both

0.05). The mRNA expression of DUSP22 was higher and that of HLA-C was lower in non-ADLI group than in ADLI group.

Conclusion

DNA methylation of DUSP22 and HLA-C in the peripheral blood is associated with the development of ADLI.

关键词

Keywords

references

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