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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of mouse wild type or Batf deficient T cells cultured under various combinations of IL-6 orTGF-beta

ABSTRACT: Wild type and Batf deficient T cells were stimulated under various combinations of IL-6 or TGF-beta.

ORGANISM(S): Mus musculus

SUBMITTER: Barbara Schraml

PROVIDER: E-MEXP-2152 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The AP-1 transcription factor Batf controls T(H)17 differentiation.

Schraml Barbara U BU Hildner Kai K Ise Wataru W Lee Wan-Ling WL Smith Whitney A-E WA Solomon Ben B Sahota Gurmukh G Sim Julia J Mukasa Ryuta R Cemerski Saso S Hatton Robin D RD Stormo Gary D GD Weaver Casey T CT Russell John H JH Murphy Theresa L TL Murphy Kenneth M KM

Nature 20090705 7253

Activator protein 1 (AP-1, also known as JUN) transcription factors are dimers of JUN, FOS, MAF and activating transcription factor (ATF) family proteins characterized by basic region and leucine zipper domains. Many AP-1 proteins contain defined transcriptional activation domains, but BATF and the closely related BATF3 (refs 2, 3) contain only a basic region and leucine zipper, and are considered to be inhibitors of AP-1 activity. Here we show that Batf is required for the differentiation of IL ...[more]

PMID: 19578362

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

Project description:CD4+ T cells that selectively produce interleukin (IL)-17, are critical for host defense and autoimmunity1-4. Crucial for T helper17 (Th17) cells in vivo5,6, 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 specification7-10. 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. Mouse T helper 17 cell differentiation with or without TGFB

2010-08-31 | E-GEOD-23505 | biostudies-arrayexpress

Dynamic BRG1 Recruitment During T Helper Differentiation And Activation Reveals Distal Regulatory Elements

Project description:We found binding of the remodeling protein BRG1 was programmed by lineage and activation signals. BRG1 binding was positively correlated with gene activity at protein-coding and miRNA genes. BRG1 binding was found at promoters and distal regions, including known and novel distal regulatory elements. Distal BRG1 binding correlated with expression, and novel distal sites possessed enhancer activity, suggesting a general role for BRG1 in long-distance gene regulation. Together, these findings suggest BRG1 interprets differentiation and activation signals and plays a causal role in gene regulation, chromatin structure, and cell fate. Our findings indicate BRG1 binding is a useful marker for identifying cis-regulatory regions in protein-coding and miRNA genes. Compare BRG1 binding in T helper subsets genome wide; Naïve, resting Th1, resting Th2, Stimulated Th1, Stimulated Th2, Stimulated Th17, compared to input DNA as negative control

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Roles of STAT3 and STAT5 in regulation of gene expression under Th17 differentiation

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Project description:Through their functional diversification, CD4+ T cells play key roles in both driving and constraining immune-mediated pathology. Transcription factors are critical in the generation and maintenance of cellular diversity and negative regulators antagonistic to alternate fates often act in conjunction with positive regulators to stabilize lineage specification1. Polymorphisms within the locus encoding a transcription factor BACH2 are associated with diverse immune-mediated diseases including asthma2, multiple sclerosis3, Crohn¹s disease4-5, coeliac disease6, vitiligo7 and type 1 diabetes8. A role for Bach2 in maintaining immune homeostasis, however, has not been established. Here, we define Bach2 as a broad regulator of immune activation that stabilizes immunoregulatory capacity while repressing the differentiation programmes of multiple effector lineages in CD4+ T cells. Bach2 was required for efficient formation of regulatory (Treg) cells and consequently for suppression of lethal inflammation in a manner that was Treg cell dependent. Assessment of the genome-wide function of Bach2, however, revealed that it represses genes associated with effector cell differentiation. Consequently, its absence during Treg polarization resulted in inappropriate diversion to effector lineages. In addition, Bach2 constrained full effector differentiation within Th1, Th2 and Th17 cell lineages. These findings identify Bach2 as a key regulator of CD4+ T-cell differentiation that prevents inflammatory disease by controlling the balance between tolerance and immunity. The role of Bach2t to regulate immune homeostasis was investigated by mapping DNA binding profiles of Bach2 in iTreg condition. The function of Bach2 was also evaluated by comparing transcriptome in WT and Bach2-deficient iTreg cells and further comparison was done with transcriptome in naive, Th1, Th2, and Th17 conditions.

2013-06-27 | E-GEOD-45975 | biostudies-arrayexpress

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2014-03-26 | E-GEOD-44937 | biostudies-arrayexpress

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Project description:T-helper (Th) lineages have been generated in vitro by activating CD4 cells with anti-CD3/CD28 antibodies during polarization. Physiologically, however, the generation of Th lineages is by activation with the specific antigen presented by antigen-presenting cells (APC). Here, we used TCR-transgenic mice to compare the phenotypes of Th1, Th9 and Th17 lineages when generated by either one of the two activation modes. Lineage Th cells specific against hen egg lysozyme (HEL), were adoptively transferred into recipient mice transgenically expressing HEL in their lens. Remarkable differences were found between lineages of Th1, Th9, or Th17, generated by either one of the two modes in their capacities to migrate to and proliferate in the recipient spleen and, importantly, to induce inflammation in the recipient mouse eyes. Substantial differences were also observed between the lineage pairs in their transcript expression profiles of certain chemokines and chemokine receptors. Surprisingly, however, close similarities were observed between the transcript expression profiles of lineages of the three phenotypes, activated by the same mode. Furthermore, Th cell lineages generated by the two activation modes differed considerably in their pattern of gene expression, as monitored by microarray analysis, but exhibited commonality with lineages of other phenotypes generated by the same activation mode. This study thus shows that (i) Th lineages generated by activation with anti-CD3/CD28 antibodies differ from lineages generated by antigen/APC and (ii) the mode of activation determines to a large extent the expression profile of major transcripts NaM-CM-/ve CD4+ T cells purified from spleen and lymph node cells of 3A9 mice were activated and polarized toward Th1, Th9, and Th17 lineages, under either plate bound anti-CD3/anti-CD28 (PBAB) or APC presented HEL protein (HA).

2014-02-13 | E-GEOD-54938 | biostudies-arrayexpress

Genes activated by nitric oxide during Th17 cell polarisation

Project description:CD4+ T cells were purified from the pool of spleens and lymph nodes of naive mice by negative selection (routine purity >98%) using an AutoMacs (Miltenyi Bioscience). Culture medium was RPMI-1640 supplemented with 10% (vol/vol) FCS (LONZA), 2 mM L-glutamine, 100 U/ml penicillin, 100 ug/ml streptomycin, and 0.05 M 2-mercaptoethanol. For Th17 cell differentiation, 5 x 105cells/ml were cultured in round-bottom 96-well plates with mitomycin-C-treated spleen cells (antigen-presenting cells, 1:1 ratio APC:T cells), 1 ug/ml soluble anti-CD3, I mg/ml soluble anti CD28, 1 ng/ml TGF-beta, 10 ng/ml IL-6, 10 ng/ml IL-1beta, 10 ug/ml anti-IFNg and 10 ug/ml anti IL-4. NO-donor (NOC-18) was added at the beginning of the culture (immediately before cells) at the indicated doses. At the end of 3 days culture, the cells were harvested and used for RNA extraction.

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