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Genome-wide maps of chromatin state in HSC, HPC7 and lineage-committed cells

ABSTRACT: Genome-wide maps of chromatin state in HSC, HPC7 and lineage-committed cells

PROVIDER: PRJNA419184 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6308620_1.fastq.gz	Fastqsanger.gz
	SRR6308620_2.fastq.gz	Fastqsanger.gz
	SRR6308621_1.fastq.gz	Fastqsanger.gz
	SRR6308621_2.fastq.gz	Fastqsanger.gz
	SRR6308622_1.fastq.gz	Fastqsanger.gz

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Genome-wide maps of chromatin state in pluripotent and lineage-committed cells

Project description:Genome-wide maps of chromatin state (H3K4me3, H3K9me3, H3K27me3, H3K36me3, H4K20me3) in pluripotent and lineage-committed cells We report the application of single-molecule-based sequencing technology for high-throughput profiling of histone modifications in mammalian cells. By obtaining over four billion bases of sequence from chromatin immunoprecipitated DNA, we generated genome-wide chromatin-state maps of mouse embryonic stem cells, neural progenitor cells and embryonic fibroblasts. We find that lysine 4 and lysine 27 trimethylation effectively discriminates genes that are expressed, poised for expression, or stably repressed, and therefore reflect cell state and lineage potential. Lysine 36 trimethylation marks primary coding and non-coding transcripts, facilitating gene annotation. Trimethylation of lysine 9 and lysine 20 is detected at satellite, telomeric and active long-terminal repeats, and can spread into proximal unique sequences. Lysine 4 and lysine 9 trimethylation marks imprinting control regions. Finally, we show that chromatin state can be read in an allele-specific manner by using single nucleotide polymorphisms. This study provides a framework for the application of comprehensive chromatin profiling towards characterization of diverse mammalian cell populations. Histone H3 or H4 tri-methylation ChIP-Seq in singlicate from murine embryonic stem (ES) cells, ES-derived neural precursor cells, and embryonic fibroblasts.

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Genome-wide maps of chromatin state in HSC, HPC7 and lineage-committed cells

Project description:The correct balance between self-renewal and differentiation of hematopoietic stem cells (HSC) is orchestrated by the crosstalk between extrinsic and intrinsic factors. A combination of transcriptional regulators and chromatin-based epigenetic changes provide a fine-tuning mechanism to determine HSC fate. We report that the histone H4 lysine 16 (H4K16) specific lysine acetyl-transferase MOF (KAT8) shows dynamic chromatin occupancy during HSC differentiation. MOF regulates erythroid commitment by regulating the expression of key haematopoietic genes. Indeed, loss of just one copy of Mof perturbs HSC commitment, leading to skewed granulocytic lineage commitment and impaired erythroid maturation in mice. Wild-type MOF and strikingly, enforced expression of the transcription factor GATA-1, rescued hematopoietic skewing of this granulocytic fate bias. Furthermore, single-cell RNA-seq of Mof haploinsufficient HSCs revealed an enrichment of a novel immature heterogeneous sub-population of cells with increased proliferation potential, indicative of an enhanced pro-leukemic state. Therefore, our results demonstrate an unprecedented role of MOF in the regulation of HSC plasticity, identity and differentiation.

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