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Gene Microarray analysis of Th17 cells

ABSTRACT: Th17 cells are enriched by sorting FR4-CD4+ T cells from SKG mice. A large number of Th17 cells also develop spontaneously when CD4+ T cells from IFN-g-deficient (IFN-g-/-) BALB/c mice are transferred to T cell-deficient RAG2-deficient (RAG2-/-) mice and subjected to homeostatic proliferation, whereas they fail to develop in similar transfer of IL-6-deficient (IL-6-/-) CD4+ T cells to IL-6-/- RAG2-/- mice. To explore the functional molecules specifically expressed by Th17 cells, we conducted Gene Microarray analysis between 10-month-old SKG FR4-CD4+ cells and age-matched BALB/c FR4-CD4+ cells, and between IFN-g-/- CD4+ cells transferred to RAG2-/- mice and IL-6-/- CD4+ T cells transferred to IL-6-/- RAG2-/- mice. The analysis revealed that 1,556 and 115 genes were up-regulated in 10-month-old SKG FR4-CD4+ and IFN-g-/- CD4+ T cells after homeostatic proliferation, respectively, with 29 genes shared by the two groups of genes. The 29 genes included those encoding cytokines, chemokines, and their receptors, such as IL-1 receptor type1 (IL-1R1), IL-17, IL-22, IL-21, CCR6, and CCL20. Keywords: cell type comparison

ORGANISM(S): Mus musculus

PROVIDER: GSE9316 | GEO | 2007/10/17

SECONDARY ACCESSION(S): PRJNA102977

REPOSITORIES: GEO

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Transcription profiling of mouse SKG FR4-CD4+ cells and age-matched BALB/c FR4-CD4+ cells, and between IFN-g-/- CD4+ cells transferred to RAG2-/- mice and IL-6-/- CD4+ T cells transferred to IL-6-/- RAG2-/- mice

Project description:Th17 cells are enriched by sorting FR4-CD4+ T cells from SKG mice. A large number of Th17 cells also develop spontaneously when CD4+ T cells from IFN-g-deficient (IFN-g-/-) BALB/c mice are transferred to T cell-deficient RAG2-deficient (RAG2-/-) mice and subjected to homeostatic proliferation, whereas they fail to develop in similar transfer of IL-6-deficient (IL-6-/-) CD4+ T cells to IL-6-/- RAG2-/- mice. To explore the functional molecules specifically expressed by Th17 cells, we conducted Gene Microarray analysis between 10-month-old SKG FR4-CD4+ cells and age-matched BALB/c FR4-CD4+ cells, and between IFN-g-/- CD4+ cells transferred to RAG2-/- mice and IL-6-/- CD4+ T cells transferred to IL-6-/- RAG2-/- mice. The analysis revealed that 1,556 and 115 genes were up-regulated in 10-month-old SKG FR4-CD4+ and IFN-g-/- CD4+ T cells after homeostatic proliferation, respectively, with 29 genes shared by the two groups of genes. The 29 genes included those encoding cytokines, chemokines, and their receptors, such as IL-1 receptor type1 (IL-1R1), IL-17, IL-22, IL-21, CCR6, and CCL20. Experiment Overall Design: We conducted Gene Microarray analysis between 10-month-old SKG FR4-CD4+ cells and age-matched BALB/c FR4-CD4+ cells, and between IFN-g-/- CD4+ cells transferred to RAG2-/- mice and IL-6-/- CD4+ T cells transferred to IL-6-/- RAG2-/- mice using GeneChip Mouse Genome 430 2.0 Array (Affymetrix). Each gruop has three replicates.

2008-06-16 | E-GEOD-9316 | biostudies-arrayexpress

CIP2A negatively regulates Th17 differentiation

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Ongoing classical IL-6 signaling is required to maintain a pathogenic Th17 response in vivo

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The Cytokines IL-21 and GM-CSF have Opposing Regulatory Roles in the Apoptosis of Conventional Dendritic Cells

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2013-02-14 | E-GEOD-27161 | biostudies-arrayexpress

The Cytokines IL-21 and GM-CSF have Opposing Regulatory Roles in the Apoptosis of Conventional Dendritic Cells

Project description:Interleukin-21 (IL-21) has broad actions on T- and B-cells, but its actions in innate immunity are poorly understood. Here we show that IL-21 induced apoptosis of conventional dendritic cells (cDCs) via STAT3 and Bim, and this was inhibited by granulocyte-macrophage colony-stimulating factor (GM-CSF). ChIP-Seq analysis revealed genome-wide binding competition between GM-CSF-induced STAT5 and IL-21-induced STAT3. Expression of IL-21 in vivo decreased cDC numbers, and this was prevented by GM-CSF. Moreover, repetitive α-galactosylceramide injection of mice induced IL-21 but decreased GM-CSF production by natural killer T (NKT) cells, correlating with decreased cDC numbers. Furthermore, adoptive-transfer of wild-type CD4+ T cells caused more severe colitis with increased DCs and interferon (IFN)-γ-producing CD4+ T cells in Il21r-/-Rag2-/- mice (which lack T cells and have IL-21-unresponsive DCs) than in Rag2-/- mice. Thus, IL-21 and GM-CSF exhibit cross-regulatory actions on gene regulation and apoptosis, regulating cDC numbers and thereby the magnitude of the immune response.

2013-02-14 | GSE27161 | GEO

Gene array for identifying molecules involved in IL-10 regulation during Th17 polarization

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.

2009-03-03 | E-GEOD-15029 | biostudies-arrayexpress

Protein Kinase 2 (CK2) Controls CD4+ T-cell Effector Function in the Pathogenesis of Colitis

Project description:Crohn’s disease (CD) is one of the major forms of inflammatory bowel disease (IBD), characterized by chronic inflammation of the gastrointestinal tract. CD is associated with aberrant Th1 and Th17 responses accompanied by high levels of IFN-g and IL-17, respectively. Protein kinase 2 (CK2) is a highly conserved serine-threonine kinase that is involved in several signal transduction pathways which regulate inflammatory responses. CK2 promotes Th17 cell differentiation and suppresses the generation of Foxp3+ regulatory T cells. The function of CK2 in CD4+ T-cells during the pathogenesis of CD is unknown. We utilized T-cell induced colitis model, transferring CD45RBhi naïve CD4+ T-cells from CK2afl/fl littermate control and CK2afl/fldLck-Cre mice into Rag1-/- mice. We demonstrate that CD4+ T-cells from CK2afl/fldLck-Cre mice fail to induce wasting disease and significant intestinal inflammation, which is associated with decreased IL-17A+, IFN-g+ and double positive IL-17A+ IFN-g+ CD4+ T-cells in the spleen and colon. Further, we determine that CK2a regulates CD4+ T-cell proliferation through a cell-intrinsic manner. CK2a is also important in controlling CD4+ T-cell responses by regulating NFAT2, which is vital for T-cell activation and proliferation. Thus, our data demonstrate that CK2a contributes to the pathogenesis of colitis by promoting CD4+ T-cell proliferation and Th1 and Th17 responses, and that targeting CK2 kinase activity may be a novel therapeutic treatment for CD patients.

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IFNb-1a in-vivo treatment induces the expression and signaling of IFNAR1 and inhibits Th17 responses in PBMCs derived from CIS patients

Project description:IFNb has been used as a first line therapy for relapsing remitting multiple sclerosis (RRMS). Since only a few studies have addressed the role of endogenous IFNb in the pathogenesis of the disease, our objective was to characterize its role in the transcriptional regulation of pathogenic Th17 cytokines in patients with RRMS. In-vitro studies have demonstrated that IFNb inhibited IL-17A, IL-17F, IL-21, IL-22 and IFN-b secretion in CD4+ lymphocytes through the induction of suppressor of cytokine secretion (SOCS)1 and 3. We found that patients with RRMS have increased serum and cerebrospinal fluid (CSF) Th17 (IL-17A and IL-17F) cytokine levels in comparison to the control subjects, suggesting that deficient endogenous IFNbeta secretion and/or signaling may contribute to the dysregulation of those pathogenic cytokines in CD4+ cells. We identified that the endogenous IFNb from serum of RRMS patients induced a significantly lower IFN-inducible gene expression in comparison to healthy controls (HCs). In addition, in-vitro studies have revealed a deficient endogenous and exogenous IFNb signaling in CD4+ cells derived from MS patients. Interestingly, upon inhibition of the endogenous IFNb signaling by silencing interferon regulatory factor (IRF)7 gene expression, the resting CD4+ T cells secreted significantly higher level of IL-17A, IL-17F, IL-21, IL-22 and IL-9, suggesting that endogenous IFNb suppresses the secretion of these pathogenic cytokines. In-vivo recombinant IFNb-1a treatment induced IFNAR1 and its downstream signaling molecules’ gene expression, suggesting that treatment may reconstitute a deficient endogenous IFNbeta regulation of the CD4+ T-cells’ pathogenic cytokine production in MS patients.

2014-05-15 | GSE53716 | GEO

Opposing Roles of STAT1 and STAT3 in IL-21 Function in CD4+ T cells

Project description:Interleukin-21 (IL-21) is a type 1 cytokine essential for immune cell differentiation and function. Although IL-21 can activate several STAT family transcription factors, previous studies focused mainly on the role of STAT3 in IL-21 signaling. Here, we investigated the role of STAT1 and show that STAT1 and STAT3 have at least partially opposing roles in IL-21 signaling in CD4+ T cells. IL-21 induced STAT1 phosphorylation, and this was augmented in Stat3-deficient CD4+ T cells. RNA-Seq analysis of CD4+ T cells from Stat1- and Stat3-deficient mice revealed that both STAT1 and STAT3 are critical for IL-21-mediated gene regulation. Expression of some genes, including Tbx21 and Ifng, was differentially regulated by STAT1 and STAT3, and interestingly, ChIP-Seq analysis showed that STAT3 binding at Tbx21 and Ifng loci was attenuated in Stat1-deficient cells. Moreover, opposing actions of STAT1 and STAT3 on IFN- expression in CD4+ T cells were demonstrated in vivo during chronic lymphocytic choriomeningitis (LCMV) infection. Finally, IL-21-mediated induction of STAT1 phosphorylation, as well as IFNG and TBX21 expression, were higher in CD4+ T cells from patients with autosomal dominant hyper-IgE syndrome (AD-HIES), which is caused by STAT3 deficiency. These data indicate an interplay between STAT1 and STAT3 in fine-tuning IL-21 actions. Genome-wide transcription factors mapping and binding of STAT3 in mouse CD4+ T cells in both WT and Stat1-deficient mice. RNA-Seq is performed in mouse CD4+ T cells in WT, Stat1-deficient and Stat3-deficient mice.

2015-07-01 | E-GEOD-63204 | biostudies-arrayexpress

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