Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA123545 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR039652.fastq.gz | Fastqsanger.gz | |||
| SRR039653.fastq.gz | Fastqsanger.gz | |||
| SRR039654.fastq.gz | Fastqsanger.gz | |||
| SRR039655.fastq.gz | Fastqsanger.gz | |||
| SRR039656.fastq.gz | Fastqsanger.gz |
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Project description:This SuperSeries is composed of the following subset Series: GSE17850: Genome-wide detection of STAT6 binding sites in IL-4 treated naive human CD4+ T cells GSE17851: Genome-wide analysis of STAT6 target genes in IL-4 treated human cord blood CD4+ cells GSE17974: Genome-wide analysis of early transcriptional events induced by cytokine IL-4 in human cord blood CD4+ T cells Refer to individual Series
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2010-06-25 | E-GEOD-17850 | biostudies-arrayexpress
Project description:STAT6 is a major transcription factor driving the polarization of Th2 cells in response to IL-4. STAT6 is phosphorylated by Jak1 and Jak3 kinases at the IL-4 receptor, after which phosphorylated STAT6 forms a homodimer and translocates into the nucleus. There STAT6 binds to specific DNA sequences, regulating the transcription of its target genes. Here we have analyzed on a genome wide level the STAT6 binding sites, after 1h and 4h of IL-4 induction, in naive human CD4+ T cells. Keywords: SRA
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Project description:STAT6 is a major transcription factor driving the polarization of Th2 cells in response to cytokine IL-4. Here we have analyzed on a genome wide level the STAT6 mediated gene expression after IL-4 induction in naive human CD4+ T cells. RNAi mediated STAT6 knockdown was used to reveal the genes specifically regulated by STAT6. Total RNA from STAT6 siRNA treated cord blood CD4+ T cells 12, 24, 48 or 72 hours after culturing the cells in activating (antiCD3+antiCD28) plus or minus IL-4 conditions was compared to total RNA from nonspecific control siRNA treated cells. All together 18 samples were analyzed and 3 biological replicates of the culture were performed for a total of 54 samples.
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Project description:STAT6 is a major transcription factor driving the polarization of Th2 cells in response to cytokine IL-4. Here we have analyzed on a genome wide level the STAT6 mediated gene expression after IL-4 induction in naive human CD4+ T cells. RNAi mediated STAT6 knockdown was used to reveal the genes specifically regulated by STAT6.
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Project description:Endothelial cell activation and dysfunction underlie many vascular disorders, including atherosclerosis and inflammation. Here, we show that interleukin (IL)-4 markedly induced vascular cell adhesion molecule (VCAM)-1, both in cultured endothelial cells and in the intact endothelium in mice. Combined treatment with IL-4 and tumor necrosis factor (TNF)- alpha resulted in further, sustained induction of VCAM-1 expression. IL-4-mediated induction of VCAM-1 and secondary monocyte adhesion was predominantly regulated by the transcription factor, STAT6. Genome-wide survey of IL-4-mediated STAT6 binding from sequential chromatin-immunoprecipitation with deep-sequencing (ChIP-seq) in endothelial cells revealed regions of transient and sustained transcription factor binding. By combining DNA microarrays and ChIP-seq at the same time points, the majority of IL-4-responsive genes were shown to be STAT6-dependent and associated with direct STAT6 binding to their promoter. IL-4-mediated stable binding of STAT6 led to sustained target gene expression. Moreover, our strategy led to the identification of a novel functionally important STAT6 binding site within -16 kb upstream of the VCAM-1 gene. Taken together, these findings support a critical role for STAT6 in mediating IL-4 signal transduction in endothelial cells. Identification of a novel IL-4-mediated VCAM-1 enhancer may provide a foundation for targeted therapy in vascular disease (ChIP-seq data not submitted to GEO). Total 13 samples were derived from [1] HUVEC treated in the absence (0h) or presence of IL-4 (1,2,4,8, and 16h) to determine IL-4 regulated gene in endotherial cells, [2] control-siRNA or si-STAT6 transfected HUVEC cells treated in the absence or presenceof IL-4 [3] Ad-control or Ad-CA-STAT6 transfected HUVEC cells for the identification of STAT-6 dependent genes in endothelial cells.
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Project description:IL-10 production by Th17 cells is critical for limiting autoimmunity and inflammatory responses. Gene array analysis on Stat6 and T-bet double deficient Th17 cells identified the Th2 transcription factor c-Maf to be synergistically up-regulated by IL-6 plus TGFbeta, and associated with Th17 IL-10 production. Both c-Maf and IL-10 induction during Th17 polarization depended on Stat3, but not Stat6 or Stat1, and mechanistically differed from IL-10 regulation by Th2 or IL-27 signals. TGFbeta was also synergistic with IL-27 to induce c-Maf, and induced Stat1 independent IL-10 expression in contrast to IL-27 alone. Retroviral transduction of c-Maf was able to induce IL-10 expression in Stat6 deficient CD4 and CD8 T cells, and c-Maf directly transactivated IL-10 gene expression through binding to a MARE motif in the IL-10 promoter. Together, these data reveal a novel role for c-Maf in regulating T effector development, and suggest that TGFbeta may antagonize Th17 immunity by IL-10 production through c-Maf induction. Our recent studies showed that IL-6 combined with TGFbeta differed from IL-6 combined with IL-23 for IL-10 production and pathogenic activities in CD4 T cells deficient in Stat6 and T-bet, despite similar IL-17 production. We performed gene array analysis on Stat6 and T-bet double deficient cells. We rationalized that by comparing gene expression in cells treated with IL-6 plus TGFbeta versus TGFbeta alone, we would be able to identify genes specific for standard Th17 polarization, and responsible for both IL-17 and IL-10 expression. By next comparing gene expression in cells treated with IL-6 plus TGFbeta versus IL-6 plus IL-23, we could eliminate molecules involved solely in IL-17 regulation, and obtain genes specifically responsible for IL-10 regulation.
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Project description:Interleukin 9 (IL-9) is a γc-family cytokine that is highly produced by T-helper 9 (Th9) cells and regulates a range of immune responses, including allergic inflammation. Here we show that IL-2–JAK3–STAT5 signaling is required for Th9 differentiation, with critical STAT5 binding sites in the Il9 (the gene encoding IL-9) promoter. IL-2 also inhibited B cell lymphoma 6 (BCL6) expression, and over- expression of BCL6 impaired Th9 differentiation. In contrast to IL-2, IL-21 induced BCL6 and diminished IL-9 expression in wild-type but not Bcl6−/− cells, whereas Th9 differentiation was increased in Il21−/− or Il21r−/− T cells. Interestingly, BCL6 bound in proximity to many STAT5 and STAT6 binding sites, including at the Il9 promoter. Moreover, there was increased BCL6 and decreased STAT binding at this site in cells treated with blocking antibodies to IL-2 and the IL-2 receptor, suggesting a possible BCL6–STAT5 binding competition that influences IL-9 production. BCL6 binding was also increased when cells were Th9-differentiated in the presence of IL-21. Thus, our data reveal not only direct IL-2 effects via STAT5 at the Il9 gene, but also opposing actions of IL-2 and IL-21 on BCL6 expression, with increased BCL6 expression inhibiting IL-9 production. These data suggest a model in which increasing BCL6 expression decreases efficient Th9 differentiation, indicating possible distinctive approaches for controlling this process. Genome-wide transcription factors mapping and binding of STAT5B and STAT6 in mouse polarized Th9 cells treated with or without blocking antibodies to IL-2 (anti-IL-2). RNA-Seq is conducted in WT and Il2-/- mice.
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Project description:STAT3 is a major transcription factor driving the polarization of Th17 cells in response to IL-6, TGF-β and IL1-β. STAT3 is phosphorylated and forms a homodimer and translocates into the nucleus. There STAT3 binds to specific DNA sequences, regulating the transcription of its target genes. Here we have analyzed on a genome wide level the STAT3 binding sites, after 0.5h and 4h of IL-6, TGF-β and IL1-β induction, in naive human CD4+ T cells.
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