Title: A genomic atlas of systemic interindividual epigenetic variation in humans

Abstract:

DNA methylation is thought to be an important determinant of human phenotypic variation, but its inherent cell type specificity has impeded progress on this question. At exceptional genomic regions, interindividual variation in DNA methylation occurs systemically.  Like genetic variants, systemic interindividual epigenetic variants are stable, can influence phenotype, and can be assessed in any easily biopsiable DNA sample. We describe an unbiased screen for human genomic regions at which interindividual variation in DNA methylation is not tissue-specific. For each of 10 donors from the NIH Genotype-Tissue Expression(GTEx) program, CpG methylation is measured by deep whole-genome bisulfite sequencing of genomic DNA from tissues representing the three germ layer lineages: thyroid (endoderm), heart (mesoderm), and brain (ectoderm). We develop a computational algorithm to identify genomic regions at which interindividual variation in DNA methylation is consistent across all three lineages. This approach identifies 9926 correlated regions of systemic interindividual variation(CoRSIVs). These regions, comprising just 0.1% of the human genome, are inter-correlated over long genomic distances, associated with transposable elements and subtelomeric regions, conserved across diverse human ethnic groups, sensitive to periconceptional environment, and associated with genes implicated in a broad range of human disorders and phenotypes. CoRSIV methylation in one tissue can predict expression of associated genes in other tissues. In addition to charting a previously unexplored molecular level of human individuality, this atlas of human CoRSIVs provides a resource for future population based investigations into how interindividual epigenetic variation modulates risk of disease.

Biography:

Student of cellular and molecular biology, Medical researcher, International degree in genetic engineering, Participated in the 3rd international neuroinflammation congress and the 3rd international student festival of neuroscience organized by neuroscience department, mashhad university of medical science,  Participated in the 3rd international biotechnology congress of Islamic republic of Iran, Participated in the 3rd international congress on biomedicine2019, Participated in the 8th International  Conference on Women’s Health, Tehran, Iran