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Gene expression profile at single cell level of lung cDC1 and lung cDC2 in steady state

ABSTRACT: Gene expression profile at single cell level of lung cDC1 and lung cDC2 in steady state

PROVIDER: PRJNA913189 | ENA |

REPOSITORIES: ENA

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Gene expression profile at single cell level of lung cDC1 and lung cDC2 in steady state

Project description:We used single cell RNA sequencing (scRNA-seq) to analyze the heterogeneity of lung cDC1 and lung cDC2.

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Irf8 deficiency induces functional, transcriptional and epigenetic reprogramming of cDC1 into the cDC2 lineage

Project description:Conventional dendritic cells (cDC) consist of two functionally and phenotypically distinct subsets, cDC1 and cDC2, whose development is dependent on distinct sets of transcription factors. Interferon regulatory factor 8 (IRF8) is required at multiple stages of cDC1 development, but its role in mature cDC1 remains unclear. Here we used XCR1-cre to delete Irf8 in committed cDC1 and demonstrate that Irf8 is required for maintaining the identify of cDC1 but not their survival. In the absence of Irf8, committed cDC1 (“ex-cDC1”) acquired the transcriptional, functional and chromatin accessibility properties of cDC2. This conversion was independent on Irf4 and was associated with decreased accessibility in putative IRF8, Batf3 and composite AP-1-IRF (AICE) binding elements, together with increased accessibility of cDC2 associated transcription factor binding elements. Thus, IRF8 expression by committed cDC1 is required for preventing their conversion into cDC2.

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Expression data from splenic cDC1, cDC2, and pDC from WT and Bcl6cKO mice

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Project description:The functional diversification of dendritic cells (DCs) is a key step in establishing protective immune responses. Despite the importance of this lineage diversity, its genetic basis is not fully understood. DC-SCRIPT (Zfp366) is a poorly known transcription factor expressed in conventional DCs (cDCs) and their committed bone marrow progenitors but not in plasmacytoid DCs (pDCs). We show that mice lacking DC-SCRIPT displayed substantially impaired development of IRF8-dependent conventional DC1 (cDC1), while cDC2 differentiated normally. The residual DC-SCRIPT-deficient cDC1s had impaired CD8+ T-cell cross-priming, which could be in part explained by the direct control of DC-SCRIPT on IL-12p40 production. Genome-wide mapping of DC-SCRIPT binding and gene expression analyses revealed a key role for DC-SCRIPT in maintaining cDC1 identity via the direct regulation of cDC1 signature genes, including Irf8. Our study reveals DC-SCRIPT to be a critical component of the gene regulatory program shaping the functional attributes of cDC1s.

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Expression data from cDC2 derived from in vitro culture from Batf3 KO pre-cDC1 and IRF8 +32 KO pre-cDC1 compared to cDC1 derived from in vitro culture of WT pre-cDC1 or cDC2 derived from in vitro culture of WT pre-cDC2

Project description:Expression data from cDC2 derived from in vitro culture from Batf3 KO pre-cDC1 and IRF8 +32 KO pre-cDC1 compared to cDC1 derived from in vitro culture of WT pre-cDC1 or cDC2 derived from in vitro culture of WT pre-cDC2

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DC-SCRIPT (Zpf366) binding in cDC1 and cDC2 cells from wildtype and DC-SCRIPT knockout mice

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RNA-seq of lung myeloid cells from WT and Ptgs2-cKO mice

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2021-02-24 | GSE165361 | GEO

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Ablation of cDC2 development by triple mutations within the Zeb2 enhancer

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2022-04-19 | GSE188579 | GEO

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