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IL-1beta, IL-23, and TGF-beta drive plasticity of human ILC2s towards IL-17-producing ILCs in nasal inflammation

ABSTRACT: IL-1beta, IL-23, and TGF-beta drive plasticity of human ILC2s towards IL-17-producing ILCs in nasal inflammation

PROVIDER: PRJNA514327 | ENA |

REPOSITORIES: ENA

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IL-1beta, IL-23, and TGF-beta drive plasticity of human ILC2s towards IL-17-producing ILCs in nasal inflammation

Project description:Innate lymphoid cells (ILCs) are crucial for the immune surveillance at mucosal sites. ILCs coordinate early eradication of pathogens and contribute to tissue healing and remodelling, features that are dysfunctional in patients with cystic fibrosis (CF). The mechanisms by which ILCs contribute to CF-immunopathology are ill-defined. Here, we report that group 2 ILCs (ILC2s) transdifferentiated into IL-17-secreting cells in the presence of the epithelial derived-cytokines IL-1β, IL-23 and TGF-β. This conversion was abrogated by IL-4 or vitamin D3. IL-17 producing ILC2s induced IL-8 secretion by epithelial cells and their presence in nasal polyps of CF patients is associated with neutrophilia. Our data suggest that ILC2s undergo transdifferentiation in CF nasal polyps in response to local cytokines, which are induced by infectious agents.

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IL-1?, IL-23, and TGF-? drive plasticity of human ILC2s towards IL-17-producing ILCs in nasal inflammation.

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The transcription factor GATA3 is critical for the development of all IL-7Ra-expressing innate lymphoid cells (ILCs) and maintenance of type 2 ILCs

Project description:Innate lymphoid cells (ILCs) play critical roles during innate immune responses to pathogens and lymphoid organ development. IL-7Ra+ ILC subsets, similar to T helper (Th) cell subsets, produce distinctive effector cytokines. The molecular control of IL-7Ra+ ILC development and maintenance has yet to be dissected. Here we report that GATA3 is indispensable for the development of all IL-7Ra+ ILC subsets and T cells. Gata3 conditional deficient mice have no lymph nodes and are susceptible to Citrobactor rodentium infection. Genome-wide gene analyses indicate that GATA3 regulates similar set of cytokines and receptors in ILC2s and Th2 cells and is critical for the maintenance of ILC2s. Thus, GATA3 plays parallel roles in establishing and regulating both adaptive and innate lymphocytes. To identify GATA3 regulated genes in type 2 innate lymphoid cells by tamoxifen-mediated acute deletion of Gata3 gene.

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Comparison of gene expression in the intestinal metaplasia in Cdx2/IL-1beta mice vs IL-1beta alone

Project description:Cdx2/IL-1beta mice have less intestinal metaplasia at the squamocolumnar junction thanIL-1beta mice alone. This study was to identify a mechanism for this effect by examining differences in gene expression patterns when Cdx2 is co-expressed. We dissected out intestinal metaplasia nodules from the squamocolumnar junction in Cdx2/IL-1beta mice and Il-1beta mice and measured gene expression on a Mouse Gene 2.0ST Affymetrix array in Oct 2013.

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Rat primary chondrocyte: Control vs. IL-1beta treated

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Transcriptome of human ILC2s; primary vs IL-1b-primed

Project description:ILC2s regulate type2 immune responses and protect against helminth infection. We found that ILC2s can be expanded in the presence of a combination of cytokines IL-2 and IL-1b. To better understand the functional and phenotypic consequence of IL-1β activation of ILC2s, we utilized whole transcriptome sequencing (RNA-seq) of freshly isolated ILC2s and IL-1β-primed ILC2s. Differential expression analysis revealed a substantial number of genes underwent significant change between the two conditions (total 4,744 gene, FDR<0.01, Fold change >2), among which 3,871 genes were upregulated in IL-1β –primed ILC2s.

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RNA-Seq analysis of mouse group 2 innate lymphoid cells (ILC2s) cultured with IL-33, IFN-g, and IL-27

Project description:Purpose: We found that IFN-g and IL-27 had suppressive effects on ILC2s cultured with IL-33. The goal of this study is to clarify the expressions of RNA induced by IFN-g and IL-27 in ILC2s. Methods: ILC2s were isolated from fat-asociated lymphid clusters (FALC) of wild-type mice. They were cultured with IL-33 (10ng/ml), IL-33 + IFN-g (10ng/ml), or IL-33 + IL-27 (10ng/ml) for 48hrs. RNA was isolated by Allprep DNA/RNA Micro Kit (QIAGEN), and cDNA libraries were prepared by TruSeq RNA Sample Preparation kits v2 (Illumina) according to the manufacturerâs low sample protocol. A HiSeq 1500 system (Illumina) was used for 50 single-end bases (50SE)ãsequencing. Results: Sequenced reads were trimmed for adaptor sequence, and masked for low-complexity or low-quality sequence, then mapped to the reference genome (mm9) using Bowtie2 v2.1.0 and TopHat2 v2.0.8. The transcript abundances were estimated as FPKM (fragments per kilobase of exon million fragments mapped) value using Cufflinks v2.1.1. We found that both IL-27 and IFN-g upregulated the expression of STAT1 and IRF1 which are regulated downstream of IFN-g receptor signaling, but there was no difference in the expression of GATA3, a critical transcription factor for ILC2 functions. Conclusions: Our study represents the detailed differences of RNA expressions by RNA-seq technology. RNA-Seq analysis of ILC2s cultured with IL-33 (10ng/ml), IL-33 + IFN-g (10ng/ml), or IL-33 + IL-27 (10ng/ml) for 48hrs.

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