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Simultaneous profiling of chromatin accessibility and methylation on human cell lines with nanopore sequencing
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Simultaneous profiling of chromatin accessibility and methylation on human cell lines with nanopore sequencing
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Simultaneous profiling of chromatin accessibility and methylation on human cell lines with nanopore sequencing
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Journal Article
Simultaneous profiling of chromatin accessibility and methylation on human cell lines with nanopore sequencing
2020
Overview
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 and MDA-MB-231). The single-molecule resolution allows footprinting of protein and nucleosome binding, and determination of the combinatorial promoter epigenetic signature on individual molecules. Long-read sequencing makes it possible to robustly assign reads to haplotypes, allowing us to generate a 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 noncancerous cells.
Using nanopore sequencing as readout, nanoNOMe–seq enables chromosome-level allele-specific profiles of CpG methylation and chromatin accessibility on human cells, in which the chromatin accessibility is profiled through exogenous GpC methylation introduced by a GpC methyltransferase.
Publisher
Nature Publishing Group US,Nature Publishing Group
