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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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			Action	DRS
	SRR17771900_1.fastq.gz	Fastqsanger.gz
	SRR17771900_2.fastq.gz	Fastqsanger.gz
	SRR17772000_1.fastq.gz	Fastqsanger.gz
	SRR17772000_2.fastq.gz	Fastqsanger.gz
	SRR17771901_1.fastq.gz	Fastqsanger.gz

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

Project description:RNA-sequencing data from flow cytometry-sorted primary HLA-DR+ Lin-(CD19-CD3-CD14-) CD1c+ cDC2s purifed from frozen peripheral blood mononuclear cells from patients with anterior, intermediate, and posterior non-infectious uveitis and healthy controls.

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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.

2021-06-25 | GSE178833 | GEO

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Retinal endothelial cell phenotypic modifications during experimental autoimmune uveitis: a transcriptomic approach

Project description:Background: Blood-retinal barrier cells are known to exhibit a massive phenotypic change during experimental autoimmune uveitis (EAU) development. In an attempt to investigate the mechanisms of blood-retinal barrier (BRB) breakdown at a global level, we studied the gene regulation of total retinal cells and retinal endothelial cells during non-infectious uveitis. Methods: Retinal endothelial cells were isolated by flow cytometry either in Tie2-GFP mice (CD31+ CD45- GFP+ cells), or in wild type C57BL/6 mice (CD31+ CD45- endoglin+ cells). EAU was induced in C57BL/6 mice by adoptive transfer of IRBP1-20-specific T cells. Total retinal cells and retinal endothelial cells from naïve and EAU mice were sorted and their gene expression compared by RNA-Seq. Protein expression of selected genes was validated by immunofluorescence on retinal wholemounts and cryosections and by flow cytometry. Results: Retinal endothelial cell sorting in wild type C57BL/6 mice was validated by comparative transcriptome analysis with retinal endothelial cells sorted from Tie2-GFP mice, which express GFP under the control of the endothelial-specific receptor tyrosine kinase promoter Tie2. RNA-Seq analysis of total retinal cells mainly brought to light upregulation of genes involved in antigen presentation and T cell activation during EAU. Specific transcriptome analysis of retinal endothelial cells allowed us to identify 82 genes modulated in retinal endothelial cells during EAU development. Protein expression of 5 of those genes (serpina3n, lipocalin 2, ackr1, lrg1 and lamc3) was validated at the level of inner BRB cells. Conclusion: Those data not only confirm the involvement of known pathogenic molecules but further provide a list of new candidate genes and pathways possibly implicated in inner BRB breakdown during non-infectious posterior uveitis.

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Interplay of NLRC4/NLRP3 inflammasomes and Fc-ˠ-Receptors on CD1c+ DC Associates with Pathogenic IFNˠ+IL17+ T cells and RA Severity

Project description:Deregulated myeloid cells infiltrating to the joints likely contribute to rheumatoid arthritis (RA) pathogenesis through multiple mechanisms, including the secretion of proinflammatory cytokines and the induction of pathogenic adaptive Th17 cells, that mediate joint damage. However, the individual contribution of specific myeloid subsets such as CD1c+ and CD141+ conventional dendritic cells (cDC) to RA development and progression has been poorly studied and remains unclear. In particular, the potential molecular mechanisms specifically affecting CD1c+ cDCs in RA patients and their functional implications have not been characterized. Using RNA-seq, multiparametric flow cytometry and in vitro functional assays, we compared in parallel transcriptional, phenotypical and functional characteristics of monocytes, CD1c+ and CD141+ cDCs from the blood and synovial fluid of RA patients.

2022-12-21 | GSE157047 | GEO

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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