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Whole transcriptome-sequencing of CD1c+ conventional type 2 dendritic cells of human non-infectious uveitis patients [Replication cohort]

ABSTRACT: Whole transcriptome-sequencing of CD1c+ conventional type 2 dendritic cells of human non-infectious uveitis patients [Replication cohort]

PROVIDER: PRJNA800817 | ENA |

REPOSITORIES: ENA

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Whole transcriptome-sequencing of CD1c+ conventional type 2 dendritic cells of human non-infectious uveitis patients [Replication cohort]

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Whole transcriptome-sequencing of CD1c+ conventional type 2 dendritic cells of human non-infectious uveitis patients

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Intra-ocular dendritic cells characterize HLA-B27-associated acute anterior uveitis

Project description:Uveitis describes a heterogeneous group of inflammatory eye diseases characterized by infiltration of leukocytes into the uveal tissues. uveitis associated with the HLA haplotype B27 (HLA-B27) is a common subtype of uveitis and a prototypical ocular immune-mediated disease. Local immune mechanisms driving human uveitis are poorly characterized mainly due to the limited available biomaterial and subsequent technical limitations. Here, we provide the first high-resolution characterization of intraocular leukocytes in HLA-B27 positive (n=3) and negative (n=2) anterior uveitis and an infectious endophthalmitis control (n=1) by combining single cell RNA-sequencing with flow cytometry and protein analysis. Ocular cell infiltrates consisted primarily of lymphocytes in both subtypes of uveitis and of myeloid cells in infectious endophthalmitis. HLA-B27 positive uveitis exclusively featured a plasmacytoid and classical dendritic cells (cDC) infiltrate. Moreover, cDCs were central in predicted local cell-cell communication. This suggests a unique pattern of ocular leukocyte infiltration in HLA-B27 positive uveitis with relevance of dendritic cells.

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Gene expression profiles of human CD1c+ CD19- blood dendritic cells [human data]

Project description:In this study gene expression of CD1c+ CD19- blood dendritic cells from healthy subjects were investigated. Keywords: expression profiling by array Blood DCs (CD1c+ CD19-) were isolated from venous heparinized blood of three apparently healthy human volunteers using the CD1c+ (BDCA-1) dendritic cell isolation kit from Miltenyi according to the manufacturer’s instructions. Purity over 90% (95.8±3%) was determined by FACS analysis. RNA was isolated and 1 µg was labeled using the Affymetrix One-Cycle Target Labeling Kit and the biotinylated cRNA used to perform Affymetrix U133 Plus 2.0 expression arrays.

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Human CD1c+ dendritic cells drive the differentiation of CD103+ CD8+ mucosal T cells via TGF-?

Project description:In comparison to murine dendritic cells (DCs), less is known about the function of human DCs in tissues. Here, we analyzed, using lung tissues from humans and humanized mice, the role of human CD1c+ and CD141+ DCs in determining the type of CD8+ T cell immunity to live-attenuated influenza virus (LAIV) vaccine. We found that both lung DC subsets acquired influenza antigens in vivo and expanded specific cytotoxic CD8+ T cells in vitro. However, lung-tissue-resident CD1c+ DCs but not CD141+ DCs were able to drive CD103 expression on CD8+ T cells and promote CD8+ T cell accumulation in lung epithelia in vitro and in vivo. CD1c+ DCs induction of CD103 expression was dependent on membrane-bound TGF-?1. Thus, CD1c+ and CD141+ DCs generate CD8+ T cells with different properties, and CD1c+ DCs specialize in the regulation of mucosal CD8+ T cells. Total RNA were isolated from purified human CD1c+ (BDCA1+) and CD141+ (BDCA3+) mDCs sorted from different tissues, including human blood, spleen and lungs of humanized mice, and human lungs. Eighteen samples in total were analyzed from different donors and tissues.

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Circulating CD1c+ myeloid dendritic cells are precursors to Langerhans cell histiocytosis (LCH) lesion CD1a+CD207+cells

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