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Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (BS-seq)

ABSTRACT: Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (BS-seq)

PROVIDER: PRJNA1041848 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26866054_1.fastq.gz	Fastqsanger.gz
	SRR26866054_2.fastq.gz	Fastqsanger.gz
	SRR26866055_1.fastq.gz	Fastqsanger.gz
	SRR26866055_2.fastq.gz	Fastqsanger.gz
	SRR26866056_1.fastq.gz	Fastqsanger.gz

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Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters.

Project description:Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters.

| PRJNA1041846 | ENA

A role for H3K4 mono-methylation in facultative heterochromatin assembly and partitioning of chromatin readers

Project description:Mono-methylation of lysine 4 on histone H3 (H3K4me1) is a well-established feature of enhancers and promoters, although its function is unknown. Remarkably, we find H3K4me1 at the promoter regions of conditionaly-repressed muscle and stimulus-dependent inflammatory response genes in myoblasts. During myogenesis, muscle genes are activated and become H3K4-trimethylated. On the promoters of active genes, we find that H3K4me1 spatially restricts the recruitment of “readers” of H3K4me3, including ING1, which, in turn, recruits Sin3A. Our findings point to a unique role for H3K4 mono-methylation in establishing boundaries that restrict the recruitment of chromatin-modifying enzymes to defined regions within promoters.

2014-03-29 | GSE50590 | GEO

A role for H3K4 mono-methylation in facultative heterochromatin assembly and partitioning of chromatin readers

2014-03-29 | E-GEOD-50590 | biostudies-arrayexpress

Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (BS-seq)

Project description:Mixed-lineage leukemia 1 (MLL1) introduces 1-, 2- and 3-methylation into histone H3K4 through the evolutionarily conserved set domain. In this study, bovine embryonic stem cells (bESCs, known as bESCs-F7) were established from in vitro-fertilized (IVF) embryos via Wnt signaling inhibition; however, their contribution to the endoderm in vivo is limited. To improve the quality of bESCs, MM-102, an inhibitor of MLL1, was applied to the culture. The results showed that MLL1 inhibition along with GSK3 and MAP2K inhibition (3i) at the embryonic stage did not affect bESCs’ establishment and pluripotency. MLL1 inhibition improved the pluripotency and differentiation potential of bESCs via the up-regulation of stem cell signaling pathways such as PI3K-Akt and WNT. MLL1 inhibition decreased H3K4me1 modification at the promoters and altered the distribution of DNA methylation in bESCs. In summary, MLL1 inhibition gives bESCs better pluripotency, and its application may provide high-quality pluripotent stem cells for domestic animals.

2023-11-19 | GSE248156 | GEO

Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (RNA-seq)

Project description:Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (RNA-seq)

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Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (ChIP-seq)

Project description:Mixed-Lineage Leukemia 1 Inhibition Enhances the Differentiation Potential of Bovine Embryonic Stem Cells by Increasing H3K4 Mono-Methylation at Active Promoters. (ChIP-seq)

| PRJNA1041849 | ENA

Enhancer-associated H3K4 mono-methylation by Drosophila Trithorax-related, the Drosophila homolog of Mll3/Mll4

Project description:Mono-methylation of histone H3 on lysine 4 (H3K4me1) and acetylation of histone H3 on lysine 27 (H3K27ac) are histone modifications that are highly enriched over the body of actively transcribed genes and enhancers. Although in yeast all H3K4 methylation patterns including H3K4me1 are implemented by Set1/COMPASS, there are three classes of COMPASS-like complexes in Drosophila that could carry out H3K4me1 on enhancers: dSet1, Trithorax and Trithorax-related (Trr). Here, we report that Trr, the Drosophila homolog of mammalian Mll3/4, can function as a major H3K4 mono-methyltransferase on enhancers in vivo. Loss of Trr results in a global decrease of H3K4me1 and H3K27ac in various tissues. Assays with the cut wing margin enhancer imply a functional role for Trr in enhancer-mediated processes. A genome-wide analysis demonstrates that Trr is required for H3K4me1 and H3K27ac on chromatin signatures that resemble the histone modification patterns described for enhancers. Since Trr and mammalian Mll3/4 complexes are distinguished by bearing a unique subunit, the H3K27 demethylase UTX, we propose a model in which the H3K4 mono-methyltransferase Trr, and the H3K27 demethylase, UTX, cooperate to regulate the transition from inactive/poised to active enhancers.

2012-12-01 | GSE41440 | GEO