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In the aftermath of stroke or myocardial infarction, neutrophil extracellular traps disrupt systemic immunoglobulin production

ABSTRACT: In the aftermath of stroke or myocardial infarction, neutrophil extracellular traps disrupt systemic immunoglobulin production

PROVIDER: PRJNA1070340 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27777400_1.fastq.gz	Fastqsanger.gz
	SRR27777400_2.fastq.gz	Fastqsanger.gz
	SRR27777401_1.fastq.gz	Fastqsanger.gz
	SRR27777401_2.fastq.gz	Fastqsanger.gz
	SRR27777402_1.fastq.gz	Fastqsanger.gz

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In the aftermath of stroke or myocardial infarction, neutrophil extracellular traps disrupt systemic immunoglobulin production

Project description:Post-injury dysfunction of humoral immunity accounts for infections and poor outcome in cardiovascular diseases. Immunoglobulin A (IgA), the most abundant mucosal antibody is produced by plasma B cells in intestinal Peyer’s patches (PP) and lamina propria. Here, we show that stroke and myocardial ischemia (MI) patients had strongly reduced IgA blood levels. This was phenocopied in experimental mouse models where decreased plasma and fecal IgA were accompanied by rapid and macroscopic shrinkage of PP caused by substantial B cell loss. Stroke/MI triggered neutrophils to release neutrophil extracellular traps (NETs). Depletion of neutrophils, NET-degradation, or blockade of NET-release inhibited PP shrinkage and loss of B cells and IgA in stroke mice. Also, stroke and MI patients had higher amounts of circulating NETs, correlating with reduced IgA levels. Strikingly, stroke patients treated with DNase-I had reduced circulating NETs and stable IgA levels. Our results unveil how tissue-injury-triggered systemic NET release disrupts physiological IgA secretion and how this can be inhibited in patients.

2024-03-17 | GSE254410 | GEO

Neutrophil extracellular traps melt Peyer’s patches following stroke and myocardial infarction

Project description:Sterile tissue injury after stroke causes lymphocyte contraction in lymphoid tissues and may decrease circulating IgA-levels. Intestinal Peyer’s patches (PP) harbor large numbers of IgA+ B cell precursors and plasma cells. Whether and how tissue injury triggers PP-B cell death, thereby mediating IgA-loss, is unknown. We found decreased circulating IgA levels in stroke and myocardial infarction patients. Experimental stroke and myocardial infarction in mice phenocopied the human situation. Decreased plasma and fecal IgA were accompanied by rapid and macroscopic shrinkage of PP caused by substantial losses of PP-resident IgA+ precursors and plasma cells in mice. Tissue injury induced neutrophil activation endowed with the release of toxic neutrophil extracellular traps (NETs). Antibody-mediated or genetically- induced neutrophil loss, digestion of NETs, or inhibition of their release by the Gasdermin D blockade completely prevented lymphocyte loss and PP shrinkage. We also identified NETs in the plasma of stroke and myocardial infarction patients. Hence, tissue injury induces systemic NET-release, which might be targeted to maintain immune homeostasis at mucosal barriers.

2024-02-28 | PXD044644 | Pride

Specific post-translational histone mod. of neutrophil extracellular traps as immunogens & potential SLE Ab targets.

Project description:This SuperSeries is composed of the following subset Series: GSE32542: Murine serum reactivity to common autoantigens in response to immunization with neutrophil extracellular traps GSE32543: Human and murine serum reactivity to specific histone posttranslational modifications in neutrophil extracellular traps Refer to individual Series

2012-01-26 | E-GEOD-32544 | biostudies-arrayexpress

Piezo1 induces neutrophil extracellular traps formation directing M1 macrophage differentiation

Project description:To research the neutrophil extracellular traps in the regulation of macrophages differentiation, we performed gene expression profiling analysis using data obtained from RNA-seq of mice and control with virus infection.

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Immunoglobulin-Associated Proteome (IgAP) in Patients of Acute Myocardial Infarction and Chronic Coronary Syndromes

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Inflammation and neutrophil extracellular traps in cerebral cavernous malformation

Project description:Cerebral Cavernous Malformation (CCM) is a brain vascular disease with various neurological symptoms. In this study, we describe the inflammatory profile in CCM and show for the first time the formation of neutrophil extracellular traps (NETs) in rodents and humans with CCM. Through RNA-seq analysis of cerebellum endothelial cells from wild-type mice and mice with anendothelial cell-specific ablation of the Ccm3 gene (Ccm3iECKO), we show that endothelial cells from Ccm3iECKO mice have anincreased expression of inflammation-related genes.

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mRNA, ncRNA-seq and miRNA-seq of AGS cellline and AGS cellline with neutrophil extracellular traps

Project description:ncRNA-seq and miRNA-seq of AGS cellline and AGS cellline with neutrophil extracellular traps

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Neutrophil extracellular traps mediate articular cartilage damage and enhance the immunogenicity of cartilage components in rheumatoid arthritis

Project description:This study invesigates the effects of neutrophil extracellular traps (NETs) on articular cartilage degredation and resulting autoimmune responses in rheumatoid arthritis.

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An injectable hydrogel to disrupt neutrophil extracellular traps for treating rheumatoid arthritis.

Project description:Rheumatoid arthritis (RA), an autoimmune disease, is characterized by inflammatory cell infiltration that damages cartilage, disrupts bone, and impairs joint function. The therapeutic efficacy of RA treatments with the severely affected side remains unsatisfactory despite current treatment methods that primarily focus on anti-inflammatory activity, largely because of the complicatedly pathological mechanisms. A recently identified mechanism for RA development involves the interaction of RA autoantibodies with various proinflammatory cytokines to facilitate the formation of neutrophil extracellular traps (NETs), which increased inflammatory responses to express inflammatory cytokines and chemokines. Therefore, NETs architecture digestion may inhibit the positive-feedback inflammatory signal pathway and lessen joint damage in RA. In this work, deoxyribonuclease I (DNase) is connected to oxidized hyaluronic acid (OHA) via Schiff base reaction to extend the half-life of DNase. The modification does not influence the DNase activity for plasmid deoxyribonucleic acid hydrolysis and NETs' architecture disruption. Carboxymethyl chitosan is crosslinked with DNase-functionalised OHA (DHA) to form an injectable, degradable, and biocompatible hydrogel (DHY) to further strengthen the adhesive capability of DHA. Importantly, the collagen-induced arthritis model demonstrates that intra-articular injection of DHY can significantly reduce inflammatory cytokine expression and alleviate RA symptoms, which can be significantly improved by combining methotrexate. Here, a DNase-functionalised hydrogel has been developed for RA treatment by constantly degrading the novel drug target of NETs to decrease inflammatory response in RA.

| S-EPMC9897762 | biostudies-literature

Neutrophil extracellular traps trigger inflammatory bone destruction in periodontitis

Project description:Neutrophil recruitment and activation are hallmarks of the prevalent inflammatory disease, periodontitis. However, the mechanisms by which neutrophils contribute to in inflammatory bone destruction remain unclear. Herein, we document that neutrophil extracellular traps (NETs) have a direct role in mediating inflammatory pathology. In an established animal model of periodontitis, we demonstrate that genetic or pharmacologic inhibition of NETs formation, or removal of NETs by DNase-Ⅰ, alleviates inflammatory bone loss in vivo. Investigating the mechanisms by which NETs drive periodontal inflammation, we find that extracellular histones have a direct role in disease progression. Consistent with findings in animal models, histones bearing classic NET-associated post-translational modifications are correlated with disease severity and are significantly elevated in local lesions and systemic circulation of patients with periodontitis. Our work reveals NETs-associated components as pathogenic mediators, potential biomarkers, and therapeutic targets for periodontitis.

2023-05-23 | GSE228021 | GEO

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