fnins-13-00712 July 15, 2019 Time: 15:26 # 1 ORIGINAL RESEARCH published: 17 July 2019 doi: 10.3389/fnins.2019.00712 Genome-Wide DNA Methylation Analysis Reveals Epigenetic Pattern of SH2B1 in Chinese Monozygotic Twins Discordant for Autism Spectrum Disorder Shuang Liang1, Zhenzhi Li2, Yihan Wang3, Xiaodan Li1, Xiaolei Yang1, Xiaolei Zhan1, Yan Huang1, Zhaomin Gao1, Min Zhang3, Caihong Sun1, Yan Zhang3* and Lijie Wu1* 1 Department of Child and Adolescent Health, School of Public Health, Harbin Medical University, Harbin, China, 2 Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC, United States, 3 College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder. Aberrant Edited by: DNA methylation has been observed in ASD but the mechanisms remain largely Leonard C. Schalkwyk, unknown. Here, we employed discordant monozygotic twins to investigate the University of Essex, United Kingdom contribution of DNA methylation to ASD etiology. Genome-wide DNA methylation Reviewed by: analysis was performed using samples obtained from five pairs of ASD-discordant Claus Jürgen Scholz, Labor Dr. Wisplinghoff, Germany monozygotic twins, which revealed a total of 2,397 differentially methylated genes. Emma Louise Dempster, Further, such gene list was annotated with Kyoto Encyclopedia of Genes and Genomes University of Exeter, United Kingdom and demonstrated predominant activation of neurotrophin signaling pathway in ASD- *Correspondence: Lijie Wu discordant monozygotic twins. The methylation of SH2B1 gene was further confirmed
[email protected] in the ASD-discordant, ASD-concordant monozygotic twins, and a set of 30 pairs of Yan Zhang sporadic case-control by bisulfite-pyrosequencing.