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Characterization of dynamic p300 enhancers in murine cardiomyocyte development [HiC]

ABSTRACT: Characterization of dynamic p300 enhancers in murine cardiomyocyte development [HiC]

PROVIDER: PRJNA799015 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17681562_1.fastq.gz	Fastqsanger.gz
	SRR17681562_2.fastq.gz	Fastqsanger.gz
	SRR17681563_1.fastq.gz	Fastqsanger.gz
	SRR17681563_2.fastq.gz	Fastqsanger.gz
	SRR17681564_1.fastq.gz	Fastqsanger.gz

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Characterization of dynamic p300 enhancers in murine cardiomyocyte development [HiC]

Project description:We report the application of bioChIP-seq, bulk RNA-seq, Hi-C, and Massively parallel reporter assays (MPRAs) to characterize the p300-bound regulatory regions in murine cardiomyocytes (CMs). By obtaining ChIP-seq data of coactivator p300 from seven developmental stages of mouse CMs, we defined the dynamic p300 enhancers from embryonic CMs to adult CMs. We then validated the activity of dynamic p300 enhancers with AAV9-based MPRAs, we found dynamic p300 enhancers show dynamic activity from postnatal day 0 (P0) CMs to 4-week-old CMs. In addition, MRPA results suggest nuclear receptor motifs are required for the activity of some p300 late enhancers. With Hi-C data of E12.5, P0 and adult CMs, we identified chromatin structure changes such as chromatin loops, compartment switch, and new TAD boundaries are associated with dynamic p300 binding. This study provides data source of CM-selective p300 enhancers, chromatin 3D structure and gene expression during CM development and maturation.

2023-01-19 | GSE194087 | GEO

Characterization of dynamic p300 enhancers in murine cardiomyocyte development

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Characterization of dynamic p300 enhancers in murine cardiomyocyte development [RNA-seq]

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Characterization of dynamic p300 enhancers in murine cardiomyocyte development [ChIP-seq]

Project description:Characterization of dynamic p300 enhancers in murine cardiomyocyte development [ChIP-seq]

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Characterization the crosstalk between P300 enhancers and 3D genome in murine cardiomyocyte development and maturation by H3K27ac HiChIP.

Project description:We report the application of bioChIP-seq, bulk RNA-seq, Hi-C, H3K27ac HiChIP, and Massively parallel reporter assays (MPRAs) to characterize the p300-bound regulatory regions in murine cardiomyocytes (CMs). By obtaining ChIP-seq data of coactivator p300 from seven developmental stages of mouse CMs, we defined the dynamic p300 enhancers from embryonic CMs to adult CMs. We then validated the activity of dynamic p300 enhancers with AAV9-based MPRAs, we found dynamic p300 enhancers show dynamic activity from postnatal day 0 (P0) CMs to 4-week-old CMs. In addition, MRPA results suggest nuclear receptor motifs are required for the activity of some p300 late enhancers. With Hi-C and H3K27ac HiChIP data of E12.5, P0 and adult CMs, we identified chromatin structure changes such as chromatin loops, compartment switch, and new TAD boundaries are associated with dynamic p300 binding. This study provides data source of CM-selective p300 enhancers, chromatin 3D structure and gene expression during CM development and maturation.

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Project description:Histone modifications are now well-established regulators of transcriptional programs that distinguish distinct cell states. However, the kinetics of histone modification and their role in mediating rapid, signal-responsive changes in gene expression have been little studied on a genome-wide scale. Vascular endothelial growth factor A (VEGF), a major regulator of angiogenesis, rapidly triggers changes in transcriptional activity of human umbilical vein endothelial cells (HUVECs). Here we used chromatin immunoprecipitation and high throughput sequencing (ChIP-seq) to measure genome-wide changes in histone H3 acetylation at lysine 27 (H3K27ac), a marker of active enhancers {Kharchenko et al., 2011, Nature, 471, 480-5;Zentner et al., 2011, Genome Res, 21, 1273-83;Rada-Iglesias et al., 2011, Nature, 470, 279-83; Creyghton et al., 2010, Proc Natl Acad Sci U S A, 107, 21931-6 }, after 0, 1, 4, and 12 hours of VEGF stimulation. We show that sites with greatest H3K27ac changes were associated tightly with p300, a histone acetyltransferase. This dynamic H3K27ac signature defined transcriptional elements that are functionally linked to angiogenesis, participate in rapid VEGF-stimulated changes in chromatin conformation, and mediate VEGF-induced transcriptional responses. Dynamic H3K27ac deposition required p300 activity and did not involve altered nucleosome occupancy. Our results demonstrate that capture of dynamic changes in H3K27ac provides a new approach to define the activity of functional genomic elements and implicate epigenetic modifications in rapid signal-responsive transcriptional regulation. ChiP-seq timecourse of H3K27ac, ETS1, p300 chromatin occupancy, mRNA expression and DNA hypersensitivity of HUVEC cells stimulated with VEGF for 0, 1, 4, and 12 hours

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Characterization the crosstalk between P300 enhancers and 3D genome in murine cardiomyocyte development and maturation by H3K27ac HiChIP.

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