Int J Med Sci 2019; 16(4):576-582. doi:10.7150/ijms.32773

Research Paper

Decreased DNA methyltransferases expression is associated with coronary artery lesion formation in Kawasaki disease

Ying-Hsien Huang 1,2, Kuang-Den Chen2,3, Mao-Hung Lo1,2, Xin-Yuan Cai1,2, Ling-Sai Chang1,2, Yu-Hsia Kuo2, Wei-Dong Huang4✉, Ho-Chang Kuo1,2✉

1. Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
2. Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.
3. Institute for Translational Research in Biomedicine, Liver Transplantation Center and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
4. Baoan Maternity and Child Health Hospital, Shenzhen, Guangdong Province, China. 518100.

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Citation:
Huang YH, Chen KD, Lo MH, Cai XY, Chang LS, Kuo YH, Huang WD, Kuo HC. Decreased DNA methyltransferases expression is associated with coronary artery lesion formation in Kawasaki disease. Int J Med Sci 2019; 16(4):576-582. doi:10.7150/ijms.32773. Available from http://www.medsci.org/v16p0576.htm

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Abstract

Background: Kawasaki disease (KD) is the most common acute coronary vasculitis to occur in children. Although we have uncovered global DNA hypomethylation in KD, its underlying cause remains uncertain. In this study, we performed a survey of transcript levels of DNA methyltransferases and demethylases in KD patients.

Materials and Methods: We recruited 145 participants for this study. The chip studies consisted of 18 KD patients that were analyzed before undergoing intravenous immunoglobulin (IVIG) treatment and at least 3 weeks after IVIG treatment, as well as 36 control subjects, using Affymetrix GeneChip® Human Transcriptome Array 2.0. An additional study of 91 subjects was performed in order to validate real-time quantitative PCR.

Results: In our microarray study, the mRNA levels of DNMT1 and DNMT3A were significantly lower while TET2 was higher in acute-stage KD patients compared to the healthy controls. Through PCR validation, we observed that the expression of DNMT1 and TET2 are consistent with the Transcriptome Array 2.0 results. Furthermore, we observed significantly lower DMNT1 mRNA levels following IVIG treatment between those who developed CAL and those who did not.

Conclusion: Our findings provide an evidence of DNA methyltransferases and demethylases changes and are among the first report that transient DNA hypomethylation is induced during acute inflammatory phase of Kawasaki disease.