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IRF5 and IRF3 regulate distinct immune programs in plasmacytoid dendritic cells

ABSTRACT: IRF5 and IRF3 regulate distinct immune programs in plasmacytoid dendritic cells

PROVIDER: PRJNA427566 | ENA |

REPOSITORIES: ENA

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IRF5 and IRF3 regulate distinct immune programs in plasmacytoid dendritic cells

Project description:Transcriptomic analyses of pDCs show that the partitioning of TLR/IRF5 and RLR/IRF3 pathways confers differential gene expression and immune cytokine production in pDCs, linking IRF5 with immune regulatory and proinflammatory gene expression.

2017-12-27 | GSE108526 | GEO

Differential and Overlapping Immune Programs Regulated by IRF3 and IRF5 in Plasmacytoid Dendritic Cells.

Project description: Not available

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Specificity of enhancer selection by IRF3, IRF5 and IRF9 in dendritic cells

Project description:To discover the key determinants of IRF-specific enhancer selection, we identified and characterized IRF binding regions. Using chromatin immunoprecipitation coupled with deep sequencing (ChIP-seq), we mapped the binding regions of IRF3, IRF5, and IRF9 in murine dendritic cells (DCs) stimulated with TLR3 and TLR9 agonists, as well as IFNβ, respectively. We comprehensively analysed the IRF cistromes to identify characteristic features, including DNA motifs for IRFs and other transcription factors, and chromatin status.

2019-07-31 | GSE125340 | GEO

DNA-binding of IRF3, IRF5 and IRF7 transcription factors

Project description:DNA-binding of IRF3, IRF5 and IRF7 transcription factors

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Genome-wide maps of chromatin state of IRF5+/+ and IRF5-/- CD4+ mouse T cells

Project description:Genetic variants in IRF5 are associated with multiple immune-mediated diseases. IRF5 has been predominantly focused on for its regulation of myeloid-derived cells. We found that IRF5 contributes to CD4+ T cell outcomes and that it regulates early T cell receptor-initiated signaling and subsequently translocates to the nucleus where it binds to promoters of various genes regulated with T cell activation. We report the chromatin state of freshly isolated and activated IRF5+/+ and IRF5-/- CD4+ T cells in vitro. While there are minimal differential peaks between freshly isolated IRF5+/+ and IRF5-/- CD4+ T cells, once activated multiple differential peaks are observed between IRF5+/+ and IRF5-/- CD4+ T cells.

2020-06-29 | GSE148672 | GEO

RNA-sequencing of IRF5+ and IRF5- circulating monocytes from patients with Type-2 Diabetes

Project description:Purpose: To characterise the transcriptomic landscape in monocytes associated with IRF5 expression Methods: RNA sequencing from FACS sorted IRF5+ and IRF5- CD14+ monocytes Results: Differential expression based on IRF5 postiivity provides insight into its roles in monocyte function and in type-2 diabetes Conclusions: This study represents the first analyses of IRF5-dependent transcriptome in circulating monocytes from patients with Type-2 diabetes

2022-07-22 | GSE176216 | GEO

Expression analysis of murine splenic B-cells after retroviral transduction with a constitutively active variant of IRF5 (IRF5-4D)

Project description:Genome-wide gene expression analysis of murine splenic B-cells following retroviral transduction with a constitutively active IRF5 (IRF5-4D) Illumina WG-6 v2.0 arrays were hybridized to determine the gene expression profile of murine splenic B-cells following retroviral transduction with i) control virus (MSCV-IRES-CFP) or ii) IRF5-4D virus (MSCV-IRF5-4D-CFP). All hybridizations were done in biological triplicates.

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Plasmacytoid dendritic cells regulate tissue homeostasis of megakaryocytes

Project description:Platelet homeostasis is essential for vascular integrity and immune defense. While the process of platelet formation by fragmenting megakaryocytes (thrombopoiesis) has been extensively studied, the cellular and molecular mechanisms required to constantly replenish the pool of megakaryocytes (MKs) by their progenitor cells (megakaryopoiesis) remains unclear. Here we use intravital imaging to track the cellular dynamics of megakaryopoiesis over days. We identify plasmacytoid dendritic cells (pDCs) as homeostatic sensors that monitor the bone marrow for apoptotic MKs and deliver IFN- to the MK niche triggering local on-demand proliferation and maturation of MK progenitors. This fine-tuned coordination between thrombopoiesis and megakaryopoiesis is crucial for MK and platelet homeostasis in steady state and stress. However, excessive activation of pDCs, such as by viral infections, can disturb this homeostatic circuit. Accordingly, we show that pDCs activated by SARS-CoV2 drive inappropriate megakaryopoiesis. Together, we uncover a hitherto unknown pDC-dependent homeostatic circuit that involves innate immune sensing and demand-adapted release of inflammatory mediators to maintain tissue homeostasis of the megakaryocytic lineage.

2024-05-01 | GSE261996 | GEO

Irf3 phenotyping

Project description:The interferon regulatory factors IRF3 and IRF7 are key players in the regulation of type I and III IFN genes. In this study, we analyzed the role of IRF3 and IRF7 for the host response to influenza A virus infections in Irf3-/-, Irf7-/- and Irf3-/-Irf7-/- knock-out mice.

2016-11-02 | GSE77600 | GEO

IRF5 regulates unique subset of genes in mouse dendritic cells during West Nile virus infection (BMM_RNA-Seq)

Project description:Using integrative bioinformatics analyses, we identified new IRF5 primary target genes in mouse DCs in response to virus infection. This study provides novel insights into the distinct and unique innate immune and immune gene regulatory program directed by IRF5.

2018-12-14 | GSE118452 | GEO

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