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Induction and molecular signature of pathogenic Th17 cells

ABSTRACT: TGF-beta3 produced by developing Th17 cells induces highly pathogenic T cells that are functionally and molecularly distinct from TGF-beta1-induced Th17 cells. The microarray data represent a distinct molecular signature for pathogenic versus non-pathogenic Th17 cells. Total of seven groups with two to four samples per group from two independent experiments. The no cytokines group (Th0) was used as a control to normalize the data. 7 groups: B6: (IL-1beta, IL-6) B623: (IL-1beta, IL-6, IL-23) T16: (TGF-beta1, IL-6) T1623: (TGF-beta1, IL-6, IL-23) T36: (TGF-beta3, IL-6) T3623: (TGF-beta3, IL-6, IL-23) NOCYTO: no cytokines

ORGANISM(S): Mus musculus

SUBMITTER: Youjin Lee Raymond A Sobel Amit Awasthi David A Hafler Nir Yosef Anneli Peters Markus Kleinewietfeld Chuan Wu Francisco J Quintana Vijay K Kuchroo Sharon Kunder

PROVIDER: E-GEOD-39820 | ArrayExpress | 2012-09-01

SECONDARY ACCESSION(S): GSE39820PRJNA171767

REPOSITORIES: GEO, ArrayExpress

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Induction and molecular signature of pathogenic TH17 cells.

Lee Youjin Y Awasthi Amit A Yosef Nir N Quintana Francisco J FJ Xiao Sheng S Peters Anneli A Wu Chuan C Kleinewietfeld Markus M Kunder Sharon S Hafler David A DA Sobel Raymond A RA Regev Aviv A Kuchroo Vijay K VK

Nature immunology 20120909 10

Interleukin 17 (IL-17)-producing helper T cells (T(H)17 cells) are often present at the sites of tissue inflammation in autoimmune diseases, which has led to the conclusion that T(H)17 cells are main drivers of autoimmune tissue injury. However, not all T(H)17 cells are pathogenic; in fact, T(H)17 cells generated with transforming growth factor-β1 (TGF-β1) and IL-6 produce IL-17 but do not readily induce autoimmune disease without further exposure to IL-23. Here we found that the production of T ...[more]

PMID: 22961052

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Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling: ChIPSeq

Project description:CD4+ T cells that selectively produce interleukin (IL)-17, are critical for host defense and autoimmunity. Crucial for T helper17 (Th17) cells in vivo, IL-23 has been thought to be incapable of driving initial differentiation. Rather, IL-6 and transforming growth factor (TGF)-β1 have been argued to be the factors responsible for initiating specification. Herein, we show that Th17 differentiation occurs in the absence of TGF-β signaling. Neither IL-6 nor IL-23 alone efficiently generated Th17 cells; however, these cytokines in combination with IL-1β effectively induced IL-17 production in naïve precursors, independently of TGF-β. Epigenetic modification of the Il17a/Il17f and Rorc promoters proceeded without TGF-β1, allowing the generation of cells that co-expressed Rorγt and T-bet. T-bet+Rorγt+ Th17 cells are generated in vivo during experimental allergic encephalomyelitis (EAE), and adoptively transferred Th17 cells generated with IL-23 in the absence of TGF-β1 were more pathogenic in this experimental disease. These data suggest a new model for Th17 differentiation. Consistent with genetic data linking the IL23R with autoimmunity, our findings re-emphasize the role of IL-23 and therefore have important implications for the development of new therapies. Examination of Stat3 binding and H3K4me and H3Ac in helper T cells.

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Project description:Th17 cells are highly proinflammatory cells that are critical for clearing extracellular pathogens like fungal infections and for induction of multiple autoimmune diseases1. IL-23 plays a critical role in stabilizing and endowing Th17 cells with pathogenic effector functions2. Previous studies have shown that IL-23 signaling reinforces the Th17 phenotype by increasing expression of IL-23 receptor (IL-23R)3. However, the precise molecular mechanism by which IL-23 sustains the Th17 response and induces pathogenic effector functions has not been elucidated. Here, we used unbiased transcriptional profiling of developing Th17 cells to construct a model of their signaling network and identify major nodes that regulate Th17 development. We identified serum glucocorticoid kinase-1 (SGK1), as an essential node downstream of IL-23 signaling, critical for regulating IL-23R expression and for stabilizing the Th17 cell phenotype by deactivation of Foxo1, a direct repressor of IL-23R expression. A serine-threonine kinase homologous to AKT4, SGK1 has been associated with cell cycle and apoptosis, and has been shown to govern Na+ transport and homeostasis5, 6 7, 8. We here show that a modest increase in salt (NaCl) concentration induces SGK1 expression, promotes IL-23R expression and enhances Th17 cell differentiation in vitro and in vivo, ultimately accelerating the development of autoimmunity. The loss of SGK1 resulted in abrogation of Na+-mediated Th17 differentiation in an IL-23-dependent manner. These data indicate that SGK1 is a critical regulator for the induction of pathogenic Th17 cells and provides a molecular insight by which an environmental factor such as a high salt diet could trigger Th17 development and promote tissue inflammation. Th17 cells; comparing Sgk1-/- to WT

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Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling

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2010-08-31 | GSE23505 | GEO

Effects of bromodomain inhibitors on CD4 T+ cells under Th17-promoting conditions

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Regulation of pathogenic T helper 17 cell differentiation by steroid receptor coactivator-3

Project description:T helper 17 (Th17) cell development is programmed by the orphan nuclear receptor RORgt, but the underlying mechanism is not well understood. Nuclear receptor-mediated transcriptional activation depends on coactivators. Here we show that the steroid receptor coactivator-3 (SRC-3) critically regulates Th17 cell differentiation. Reduced incidence of experimental autoimmune encephalitis (EAE) associated with decreased Th17 cell generation in vivo was observed in mice with SRC-3 deletion specifically in T cells. In vitro, SRC-3 deficiency did not affect TGF-/IL-6-induced Th17 cell generation but severely impaired pathogenic Th17 differentiation induced by IL-1/IL-6/IL-23. Microarrays were used to showed that SRC-3 not only regulates IL-17A but also IL-1R1 expression. SRC-3 bound to Il17a and Il1r1 loci in a RORtdependent manner and was required for recruitment of the p300 acetyltransferase. Thus, SRC-3 is critical in RORt-dependent gene expression during Th17 cell-driven autoimmune diseases. Overall design: Both WT and SRC-3 deficient naive CD4+ T cells were stimulated with anti-CD3 and anti-CD28 antibodies in the absence of exogenous cytokines (Th 0 cells), or differentiated with IL-1, IL-6 plus IL-23 (pathogenic Th17 cells).

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Project description:In this work we present an analytical strategy to systematically identify early regulators by combining gene regulatory networks (GRN) with GWAS. We hypothesized that early regulators in T-cell associated diseases could be found by defining upstream transcription factors (TFs) in T-cell differentiation. Time series expression and DNA methylation profiling of T-cell differentiation identified several upstream TFs, of which TFs involved in Th1/2 differentiation were most enriched for disease associated SNPs identified by GWAS. Naïve CD4+ T cells were isolated from buffy coat of four healthy donors using a naïve CD4+ T cell isolation kit (Miltenyi, Bergisch-Gladbach, Germany). Naïve CD4+ T cells were stimulated with TGF-β (1 ng/mL), IL-1β (10 ng/mL), IL-6 (25 ng/mL), IL-21 (25 ng/mL) and IL-23 (25 ng/mL) for Th17, and TGF-β (10 ng/mL) and IL-2 (10 ng/mL) for Treg. Cells were cultured for six days in Iscove’s modified Dulbecco medium (IMDM) supplemented with 2 mM L-glutamine (PAA Laboratories, Linz, Austria), 10% heat-inactivated FCS (PAA Laboratories, Linz, Austria), 5 µM β–mercaptoethanol (Sigma-Aldrich, St. Louis, Missouri, USA) and 50 ug/mL gentamicin (Sigma-Aldrich, St. Louis, Missouri, USA). Cells were cultured for 6 days and then re-stimulated with plate-bound anti-CD3 and soluble anti-CD28 in the presence of corresponding polarizing cytokines and antibodies for another 2 days (Zhang et al. 2013). RNA was extracted using a miRneasy Mini Kit (Qiagen). The RNA concentrations were analysed with NanoDrop ND-1000 Spectrophotometer (NanoDrop Technologies). For the gene expression microarray analysis, The cRNA was prepared using a Low Input QuickAmp Labeling Kit. For Th17 and Treg cells the gene expression microarray analysis was performed using SurePrint G3 Human Gene Expression 8x60K v2 microarray kit, according to the manufacture’s instruction (Agilent Technologies).

2015-11-12 | E-GEOD-60679 | ArrayExpress

Induction of pathogenic Th17 cells by salt inducible kinase SGK-1 (NaCl)

2013-03-07 | E-GEOD-43957 | ArrayExpress

Tripartite motif-containing 33 (Trim33) determines the pathogenic function of Th17 cells

Project description:We report that Tripartite motif-containing 33 (Trim33), a protein that was previously associated with TGF-beta signaling, determines the pathogenic function of Th17 cells. Trim33 deficiency in T cells resulted in resistance to an autoimmune disease model. Lack of Trim33 did not impact TGF-beta signaling in mediating Foxp3 gene expression but greatly reduced TGF-beta induction of IL-17 production during Th17 cell differentiation. Importantly, we found TGF-beta not only increased IL-17 but also suppressed IL-10 expression; absence of Trim33 or Smad2 but not Smad4 in T cells enhanced IL-10 expression. In a Smad2-dependent manner, Trim33 was recruited to Il17 and Il10 gene loci and was crucial in appropriate histone modification accompanying Th17 differentiation. Our study thus demonstrates that Trim33, a non-canonical branch of TGF-beta signaling, programs the pro-inflammatory function of Th17 differentiation by promoting IL-17 and suppressing IL-10 expression. As a critical switch of pathogenic versus regulatory phenotype of T cells, Trim33 may be targeted in treating human autoimmune diseases. Overall design: WT and Trim33 KO CD4+ T cells were cultured under Th17-skewing condition. Comparison was made based on these two types of Th17 cells.

2018-05-02 | GSE113925 | GEO

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