1. Simultaneous profiling of chromatin accessibility and methylation on human cell lines with nanopore sequencing
- Author
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Michael Molnar, Fritz J. Sedlazeck, Roham Razaghi, Ariel Gershman, Kasper D. Hansen, Isac Lee, Jared T. Simpson, Winston Timp, Timothy Gilpatrick, and Norah Sadowski
- Subjects
Breast Neoplasms ,Computational biology ,Biology ,Biochemistry ,Article ,Epigenome ,03 medical and health sciences ,chemistry.chemical_compound ,Cell Line, Tumor ,Humans ,Epigenetics ,Promoter Regions, Genetic ,Molecular Biology ,030304 developmental biology ,0303 health sciences ,Nucleosome binding ,Genome, Human ,DNA ,Methyltransferases ,Sequence Analysis, DNA ,Cell Biology ,Methylation ,DNA Methylation ,Chromatin ,Nanopore Sequencing ,chemistry ,DNA methylation ,MCF-7 Cells ,CpG Islands ,Female ,Nanopore sequencing ,Biotechnology - Abstract
Probing epigenetic features on DNA has tremendous potential to advance our understanding of the phased epigenome. In this study, we use nanopore sequencing to evaluate CpG methylation and chromatin accessibility simultaneously on long strands of DNA by applying GpC methyltransferase to exogenously label open chromatin. We performed nanopore sequencing of Nucleosome Occupancy and Methylome (nanoNOMe) on four human cell lines (GM12878, MCF-10A, MCF-7, MDA-MB-231). The single-molecule resolution allows footprinting of protein and nucleosome binding and determining the combinatorial promoter epigenetic signature on individual molecules. Long-read sequencing makes it possible to robustly assign reads to haplotypes, allowing us to generate the first fully phased human epigenome, consisting of chromosome-level allele-specific profiles of CpG methylation and chromatin accessibility. We further apply this to a breast cancer model to evaluate differential methylation and accessibility between cancerous and non-cancerous cells.
- Published
- 2020