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Single-cell transcriptomics highlights the proinflammatory contribution of C1q-high monocytes to Behçet’s disease

ABSTRACT: Single-cell transcriptomics highlights the proinflammatory contribution of C1q-high monocytes to Behçet’s disease

PROVIDER: PRJNA816152 | ENA |

REPOSITORIES: ENA

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Single-cell transcriptomics highlights the proinflammatory contribution of C1q-high monocytes to Behçet’s disease

Project description:Behçet’s disease (BD) is a chronic vasculitis characterized by systemic immune aberrations. Here, we performed single-cell sequencing to profile peripheral blood mononuclear cells (PBMCs) and isolated monocytes from BD patients and healthy donors. We observed prominent expansion and transcriptional changes in monocytes in PBMCs from BD patients. Deciphering the monocyte heterogeneity revealed the accumulation of C1q-high (C1qhi) monocytes in BD. Pseudotime inference indicated that BD monocytes markedly shifted their differentiation toward inflammation-accompanied and C1qhi monocyte-ended trajectory. Further experiments showed that C1qhi monocytes enhanced phagocytosis and proinflammatory cytokine secretion, and multi-platform analyses revealed the significant clinical relevance of this subtype. Mechanistically, C1qhi monocytes were induced by activated IFN-γ signaling in BD patients, and were decreased by tofacitinib treatment. Our study illustrates BD immune landscape and the unrecognized contribution of C1qhi monocytes to BD hyperinflammation, showing their potential as therapeutic targets and clinical assessment indexes.

2022-03-15 | GSE198616 | GEO

Genome-wide analysis of lupus immune complex stimulation of purified CD14+ monocytes and how this response is regulated by C1q

Project description:The goal of this study was to determine what genes are up- and down-regulated in response to lupus immune complexes in purified CD14+ monocyte stimulations. Our results have shown that novel genes are induced by immune complexes but the response is less robust when using purified monocytes versus total PBMCs Total RNA was isolated from CD14+ monocytes from 2 donors after 5 hours with the following conditions: 1) Unstimulated, 2) Lupus immune complex alone, 3) Lupus immune complex + C1q, 4) C1q alone

2011-12-07 | E-GEOD-32278 | biostudies-arrayexpress

Genome-wide analysis of lupus immune complex stimulation and how this response is regulated by C1q

Project description:This SuperSeries is composed of the following subset Series: GSE32278: Genome-wide analysis of lupus immune complex stimulation of purified CD14+ monocytes and how this response is regulated by C1q GSE32279: Genome-wide analysis of lupus immune complex stimulation of peripheral blood mononuclear cells and how this is regulated by C1q Refer to individual Series

2011-12-07 | E-GEOD-32285 | biostudies-arrayexpress

C1q elicited macrophage gene expression

Project description:We have data from a previous microarray experiment which shows that C1q elicits macrophages to express genes important for clearance of dead (apoptotic) cells. In this experiment we want to determine the signaling mechanism by which C1q is turning on macrophage gene expression. For our control (sample 1-3) we heated C1q to denature it so it is inactive. We also want to know which portion of C1q is responsible for activation the macrophage so we generated C1qtails (samples 4-5). We also have macrophages treated with the whole C1q molecule (7-9). And finally we have a cell line (J774) treated with C1q but does not activate the cells (samples 10-12). Bone marrow derived macrophages or J774 cells were adhered to heat inactivated C1q, C1q tails or C1q for 18 hours. Cells were harvested and RNA was isolated and converted to double stranded cDNA and subsequently labeled and hybridized onto NimbleGen mouse gene expression array [100718_MM9_EXP] using Nimblegen Hybridization system 4 according to manufacturerM-bM-^@M-^Ys instructions (Roche)

2014-07-10 | E-GEOD-48619 | biostudies-arrayexpress

C1q elicited macrophage gene expression

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IFN-b acts on monocytes to ameliorate CNS autoimmunity by inhibiting proinflammatory cross-talk between monocytes and Th cells

Project description:Multiple sclerosis (MS) has been treated with IFN-b for three decades, but the mechanisms underlying its beneficial effects are not well understood. Our study elucidates, in a mouse model of MS, a potential mechanism whereby IFN-b inhibits cooperation between monocytes and T cells, two key immune cell types in MS. We found that IFN-b acts on monocytes to induce secretion of anti-inflammatory molecules, IL-10 and TGF-b, which act on T cells to suppress their production of pro-inflammatory molecules, GM-CSF, TNF, and FASL. Given that these T cell molecules induce proinflammatory features of monocytes, such as IL-1b production, we concluded that IFN-b therapy suppresses cooperation between monocytes and T cells, which otherwise reciprocally amplifies their harmful roles in MS.

2021-05-19 | GSE169670 | GEO

Acute atopic dermatitis and urticaria imprints peripheral monocytes with proinflammatory-prone signature

Project description:Acute atopic dermatitis and urticaria imprints peripheral monocytes with proinflammatory-prone signature

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Acute atopic dermatitis and urticaria imprints peripheral monocytes with proinflammatory-prone signature

Project description:Acute atopic dermatitis and urticaria imprints peripheral monocytes with proinflammatory-prone signature

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Baricitinib attenuates the proinflammatory phase1 of COVID-19 driven by lung-infiltrating monocytes

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IFN-b acts on monocytes to ameliorate CNS autoimmunity by inhibiting proinflammatory cross-talk between monocytes and Th cells

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