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Assessing chromatin accessibility in WT and STAT4-/- ILC1s

ABSTRACT: Assessing chromatin accessibility in WT and STAT4-/- ILC1s

PROVIDER: PRJNA548943 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9304720_1.fastq.gz	Fastqsanger.gz
	SRR9304720_2.fastq.gz	Fastqsanger.gz
	SRR9304721_1.fastq.gz	Fastqsanger.gz
	SRR9304721_2.fastq.gz	Fastqsanger.gz
	SRR9304722_1.fastq.gz	Fastqsanger.gz

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Assessing chromatin accessibility in WT and STAT4-/- ILC1s

Project description:STAT4 dynamically interacts with the genomic landscape and functions in modulating chromatin accessibility to influence gene expression. We aimed to evaluate the impact of STAT4 on chromatin accessibility of colonic lamina propria ILC1s. To address this aim, we sorted ILC1s from the colonic LP of unmanipulated C57BL/6 and STAT4-/- mice and performed the assay for transposase-accessible chromatin using sequencing (ATAC-seq).

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Discrete Roles of STAT4 and STAT6 Transcription Factors in Tuning Epigenetic Modifications and Transcription during Helper T Cell Differentiation (ChIP-Seq)

Project description:Signal transducer and activator of transcription 4 (STAT4) and STAT6 are key factors in the specification of helper T cells; however, their direct roles in driving differentiation are not well understood. Using chromatin immunoprecipitation and massive parallel sequencing, we quantitated the full complement of STAT-bound genes, concurrently assessing global STAT-dependent epigenetic modifications and gene transcription using cells from cognate STAT-deficient mice. STAT4 and STAT6 each bound over 4000 genes with distinct binding motifs. Both played critical roles in maintaining chromatin configuration and transcription of a core subset of genes through the combination of different epigenetic patterns. Globally, STAT4 had a more dominant role in promoting active epigenetic marks, whereas STAT6 had a more prominent role in antagonizing repressive marks. Clusters of genes negatively regulated by STATs were also identified, highlighting previously unappreciated repressive roles. Therefore, STAT4 and STAT6 play wide regulatory roles in T helper specification. The roles of STAT proteins to shape T helper cell phenotype was investigated by comparing DNA binding profiles of STAT4 and STAT6 in Th1 and Th2 conditions. The functional outcome of STAT bindings was further evaluated by profiling histone epigenetic marks and gene expression changes between WT and STAT-deficient T cells in Th1 and Th2 conditions.

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