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DNA Methylation Variation Is Identified in Monozygotic Twins Discordant for Congenital Heart Diseases

Congenital Heart Disease 2024年第2期19卷 247-256页

作者： shuliang Xia Huikang Tao shixin su Xinxin Chen Li Ma Jianru Li Bei Gao Xumei Liu Lei Pi Jinqing Feng Fengxiang Li Jia Li Zhiwei Zhang Guangdong Provincial People’s Hospital Southern Medical UniversityGuangzhou510100China Department of Cardiovascular surgery Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhou510623China Department of Pediatric Cardiology Guangdong Cardiovascular InstituteGuangdong Provincial Key Laboratory of South China Structural Heart DiseaseGuangzhou510100China clinical Physiology Laboratory Institute of PediatricsGuangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Key Laboratory of Research in Structural Birth Defect DiseaseGuangzhou510623China Department of Echocardiogram Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhou510623China Department of Pediatrics Washington University School of MedicineSt.LouisMO63130USA clinical biological resource bank of guangzhou women and children’s medical center Guangzhou Medical UniversityGuangzhou510623China

Aims:Multiple genes and environmental factors are known to be involved in congenital heart disease(CHD),but epigenetic variation has received little ***(MZ)twins with CHD provide a unique model for exploring this *** order to investigate the potential role of Deoxyribonucleic Acid(DNA)methyla-tion in CHD pathogenesis,the present study examined DNA methylation variation in MZ twins discordant for CHD,especially ventricular septal defect(VsD).Methods and Results:Using genome-wide DNA methylation profiles,we identified 4004 differentially methylated regions(DMRs)in 18 MZ twin pairs discordant for CHD,and 2826 genes were *** Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)analysis revealed a list of CHD-associated *** further investigate the role of DNA methylation in VsD,data from 7 pairs of MZ twins with VsD were *** identified 1614 DMRs corresponding to 1443 genes associated with arrhythmogenic right ventricular cardiomyopathy,cyclic guanosine monopho-sphate-protein kinase G(cGMP-PKG)signaling pathway by KEGG analysis,and cell-cell adhesion,calcium ion transmembrane transport by GO analysis.A proportion of DMR-associated genes were involved in calcium signaling *** methylation changes of calcium signaling genes might be related to VsD ***:CHD is associated with differential DNA methylation in MZ *** may be etiologically linked to DNA methylation,and methylation of calcium signaling genes may be involved in the development of VsD.

关键词： Congenital heart disease monozygotic twins methylation modification epigenetics

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R-loopAtlas:An integrated R-loop resource from 254 plant species sustained by a deep-learningbased tool

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Molecular Plant 2023年第3期16卷 493-496页

作者： Kuan Li Zhenzhen Wu Jincong Zhou Wei Xu Ling Li Chao Liu Wei Li Chengjun Zhang Qianwen sun center for Plant Biology School of Life SciencesTsinghua UniversityBeijing 100084China Germplasm bank of Wild species Kunming Institute of BotanyChinese Academy of ScienceKunming 650201China Tsinghua-Peking center for Life sciences Beijing 100084China shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China guangzhou women and children’s medical center Guangzhou Medical UniversityGuangzhou 510623China Haiyan Engineering&Technology center Zhejiang Institute of Advanced TechnologyJiaxing 314022China

R-loops are chromatin structures consisting of anRNA:DNA hybrid and the other single-stranded DNA,which widely exist among genomes from bacteria to higher eukaryotes and participate in a variety of biological processes(Zhou et al.,2022).Currently,a variety of approaches to detect genome-wide R-loops have been developed,and ssDRIP-seq(single-strand DNA ligation-based library preparation from DNA:RNA hybrid immunoprecipitation,followed by sequencing)is one of the widely utilized methods(Xu et al.,2022).However,there are many limitations to genome-wide R-loop mapping based on high-throughput *** example,the activity of restriction enzymes for genomic DNA fragmentation.

关键词： sustained Atlas

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