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Global Histone H3 lysine 4 trimethylation (H3K4me3) landscape changes in response to TGF-β1

ABSTRACT: Global Histone H3 lysine 4 trimethylation (H3K4me3) landscape changes in response to TGF-β1

PROVIDER: PRJNA718267 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14094430_1.fastq.gz	Fastqsanger.gz
	SRR14094430_2.fastq.gz	Fastqsanger.gz
	SRR14094431_1.fastq.gz	Fastqsanger.gz
	SRR14094431_2.fastq.gz	Fastqsanger.gz
	SRR14094432_1.fastq.gz	Fastqsanger.gz

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Global Histone H3 lysine 4 trimethylation (H3K4me3) landscape changes in response to TGF-β1

Project description:We performed Chromatin-Immunoprecipitation followed by Next-Generation Sequencing (ChIP-Seq) in PC-3 Cells stimulated with TGF-β1 for different duration. We used anti-H3K4me3 antibody to immunoprecipitate DNA fragment associated with H3K4me3. We found that a number of regions associated with H3K4me3 increased in a time-dependent manner upon TGF-β1 stimulation. Further the regions were classified into different Functional annotations.

2021-10-27 | GSE171058 | GEO

Global histone H3 lysine 9 trimethylation (H3K9me3) landscape changes in response to TGF-β1

Project description:Global histone H3 lysine 9 trimethylation (H3K9me3) landscape changes in response to TGF-β1

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Histone H3 lysine 4 trimethylation regulates RNA polymerase II promoter-proximal pause-release

Project description:Trimethylation of histone H3 lysine 4 (H3K4me3) is associated with transcriptional start sites and proposed to regulate transcription initiation. However, redundant functions of the H3K4 SET1/COMPASS methyltransferase complexes complicate elucidation of the specific role of H3K4me3 in transcriptional regulation. Here, we show that acute ablation of shared subunits of the SET1/COMPASS complexes leads to complete loss of all H3K4 methylation. H3K4me3 turnover occurs more rapidly than H3K4me1 and H3K4me2 and is dependent on KDM5 demethylases. Surprisingly, acute loss of H3K4me3 does not have detectable effects on transcriptional initiation but leads to a widespread decrease in transcriptional output, an increase in RNA polymerase II (RNAPII) pausing and slower elongation. Our study demonstrates a distinct role for H3K4me3 in transcriptional pause-release and elongation rather than transcriptional initiation.

2023-03-14 | PXD028858 | Pride

Context Dependency of Set1/COMPASS Mediated H3 Lysine 4 Trimethylation

Project description:The stimulation of trimethylation of histone H3 lysine 4 (H3K4) by H2B monoubiquitination (H2Bub) has been widely studied with multiple mechanisms proposed for this form of histone crosstalk. Cps35/Swd2 within COMPASS is considered to bridge these processes. However, a truncated form of Set1 (762-Set1) is reported to function in H3K4 trimethylation without interacting with Cps35/Swd2, and such crosstalk is attributed to the n-SET domain of Set1 and its interaction with the Cps40/Spp1 subunit of COMPASS. Here, we use biochemical, structural, in vivo, and ChIP-seq approaches to demonstrate that Cps40/Spp1 and the n-SET domain of Set1 are required for the stability of Set1 and not the crosstalk. Furthermore, the apparent wild-type levels of H3K4 trimethylation (H3K4me3) in the 762-Set1 strain is due to rogue methylase activity of this mutant resulting in the mislocalization of H3K4me3 from the promoter-proximal regions to gene bodies and intergenic regions. We have also performed detailed screens and identified yeast strains lacking H2Bub, but containing intact H2Bub enzymes, that have normal levels of H3K4me3, suggesting that ubiquitination may not directly stimulate COMPASS, but rather works in a context of the PAF and Rad6/Bre1 complexes. Our study demonstrates that the ubiquitination machinery and Cps35/Swd2 function to focus COMPASS’ H3K4me3 activity at promoter-proximal regions in a context dependent manner. ChIP-Seq for H3K4ME3 in S. cerevisie wild-type strains and strains expressing a truncated form of Set1: aa762-1080 Set1. H3K4ME3 ChIP-Seq was also compared for wild-type, leo1 knockout, and chd1 knockout strains

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Localization of histone H3 and histone H3 lysine 4 trimethylation at the start of pre-meiotic S phase

Project description:ChIP-on-chip analysis of histone H3 and histone H3 lysine 4 trimethylation in cells induced to undergo synchronous meiosis after growth in nitrogen-rich conditions or after nitrogen depletion. Comparison of H3 and H3k4Me3 in diploid pat1-114 cells grown in -N and +N conditions.

2014-02-20 | E-GEOD-53878 | biostudies-arrayexpress

Global histone H3 lysine 9 trimethylation (H3K9me3) landscape changes in response to TGF-β1

Project description:TGF-β plays an important part in the Epithelial to Mesenchymal Transition (EMT) in many malignancies. TGF-β may have pro- and anti-tumour effects in cancer cells, depending on the context and microenvironment. On the other hand, epigenetic alterations are becoming increasingly significant in a variety of biological activities. Aberrations in epigenetic processes can cause gene function to be disrupted, as well as malignant cellular change. Understanding the role of H3K9me3 in cancer survival is becoming increasingly popular. A worldwide drop in the heterochromatin mark H3 Lys9 dimethylation (H3K9me2), an increase in the euchromatin mark H3 Lys4 trimethylation (H3K9me3), and an increase in the transcriptional mark H3 Lys36 trimethylation were discovered during TGF-β induced EMT (H3K36me3). Our study focuses on locating globally H3K9me3 related regions in response to TGF-β since TGF-β and H3K9me3 play an essential role in carcinogenesis. To further understand the role and process of H3K9me3 alteration in TGF-β induced EMT, ChIP-Sequencing was done in PC-3 prostate cancer cells.

2022-08-10 | GSE191096 | GEO

Context Dependency of Set1/COMPASS Mediated H3 Lysine 4 Trimethylation

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Histone H3 lysine 27 trimethylation of miRNA genes in HMEC and HMF

Project description:Normal cell type specific histone H3 lysine 27 trimethylation of miRNA genes. HMEC and HMF represent two distinct differentiated cell type present in mammary gland each with a distinct phenotype, a distinct epigenotype as well as distinct miRNA expression pattern. The aim of the study was to determine how epigenetic modifications including histone H3 lysine 27 trimethylation affect miRNA expression. Two cell types HMEC vs. HMF. Biological replicates: 3 pairs of HMEC-HMF of 3 distinct genotypes. Immunoprecipitation using anti-histone H3 trimethylated at lysine 27 (07-449, Millipore).

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Histone H3 lysine 4 trimethylation of miRNA genes in HMEC and HMF

Project description:Normal cell type specific histone H3 lysine 4 trimethylation of miRNA genes. HMEC and HMF represent two distinct differentiated cell type present in mammary gland each with a distinct phenotype, a distinct epigenotype as well as distinct miRNA expression pattern. The aim of the study was to determine how epigenetic modifications including histone H3 lysine 4 trimethylation affect miRNA expression. Two cell types HMEC vs. HMF. Biological replicates: 3 pairs of HMEC-HMF of 3 distinct genotypes. Immunoprecipitation using anti-histone H3 trimethylated at lysine 4 (05-745, Upstate).

2011-04-05 | E-GEOD-28377 | biostudies-arrayexpress

SMYD5 catalyzes histone H3 lysine 36 trimethylation at promoters

Project description:SMYD5 catalyzes histone H3 lysine 36 trimethylation at promoters

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