Ontology highlight
ABSTRACT:
PROVIDER: PRJNA836168 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR19138122.fastq.gz | Fastqsanger.gz | |||
| SRR19138123.fastq.gz | Fastqsanger.gz | |||
| SRR19138124.fastq.gz | Fastqsanger.gz | |||
| SRR19138125.fastq.gz | Fastqsanger.gz | |||
| SRR19138126.fastq.gz | Fastqsanger.gz |
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Project description:Sepsis, a worldwide health crisis, is notorious for its high mortality rate, often attributed to the development of acute lung injury. The direct migration of intestinal immune cells to the lung as a mediator of acute lung injury remains unclear. Our study unveiled a process where cecal ligation and puncture-induced sepsis prompted a migration of γδT cells from the small intestine to the lung, subsequently triggering an overwhelming inflammatory response dominated by IL-17A.
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Project description:Sepsis, a worldwide health crisis, is notorious for its high mortality rate, often attributed to the development of acute lung injury. The direct migration of intestinal immune cells to the lung as a mediator of acute lung injury remains unclear. Our study unveiled a process where cecal ligation and puncture-induced sepsis prompted a migration of γδT cells from the small intestine to the lung, subsequently triggering an overwhelming inflammatory response dominated by IL-17A.
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Project description:Sepsis-induced acute lung injury (ALI) is prevalent in septic patients and has a high mortality rate. Considering ALI’s close link to sepsis, we used a Pseudomonas aeruginosa (PA) pneumonia-induced sepsis mouse model to investigate alveolar microenvironment alterations and lung injury post-sepsis. Peptidyl arginine deiminase (PADI) 2 and PADI4 are highly expressed in immune cells, and play substantial roles in the immune response to sepsis, but their specific functions remain unclear.We employed single-cell RNA sequencing (scRNA-seq) technology to map immune cell populations in bronchoalveolar lavage fluid (BALF) cells from Wild type (WT) and Padi2 and Padi4 double knock-out (DKO)mice in PA pneumonia-induced sepsis and sham conditions.
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Project description:Gene expression profiling was performed in lung tissues from an animal model of sepsis challenged with injurious and non-injurious mechanical ventilation to unravel the molecular pathways involved in acute lung injury. Sepsis was induced in male Sprague Dawley rats by means of cecal ligation and puncture. Septic rats were randomly allocated to three distinct groups: spontaneous breathing, mechanically ventilated with high tidal volume with zero positive end expiratory pressure (PEEP) and with low tidal volume and 10 cmH2O of PEEP. Comparisons were performed against an unventilated control group.
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Project description:Sepsis, a worldwide health crisis, is notorious for its high mortality rate, often attributed to the development of acute lung injury. In this context, the lung, being particularly vulnerable to septic damage, emerge as a primary battleground. The possible roles of the gut-lung axis mediated by the gut microbiota and its metabolic products in the context of acute lung injury have been documented. However, the direct migration of intestinal immune cells to the lung as a mediator of acute lung injury remains unclear. Our study unveiled a process where cecal ligation and puncture-induced sepsis prompted a migration of γδ T cells from the small intestine to the lung, subsequently triggering an overwhelming inflammatory response dominated by IL-17A. Small intestinal memory γδT17 cells (CD44+ IL-7Rhigh CD8low Ly6C–) were the major subtype of γδ T cells that migrated from the small intestine to the lung and aggravated acute lung injury. Moreover, the activation of the Wnt signaling in the alveolar macrophages during sepsis was identified as a driving factor for the subsequent CCL1 upregulation, which prompted the migration of small intestinal memory γδT17 cells to the lung. S-Ketamine (S-KT) treatment demonstrated a notable capacity to alleviate acute lung injury through dampening pulmonary Wnt/β-catenin signaling-mediated migration of small intestinal γδT17 cells to the lung. Our findings highlight the significant contribution of the direct migration of immune cells from the small intestine to the lung in sepsis-induced acute lung injury, and clrify the pathological significance of the localized elevation of IL-17A in the lung.
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Project description:Acute lung injury (ALI) is associated with a high mortality rate; however, the underlying molecular mechanisms are poorly understood. The purpose of this study was to investigate the expression profile and related networks of long noncoding RNAs (lncRNAs), microRNAs (miRNAs), and mRNAs in lung tissue exosomes obtained from sepsis-induced ALI. A mouse model of sepsis was established using the cecal ligation and puncture method. RNA sequencing was performed using lung tissue exosomes obtained from mice in the sham and CLP groups. Hematoxylin-eosin staining, western blotting, immunofluorescence, quantitative real-time polymerase chain reaction, and nanoparticle tracking analysis were performed to identify relevant phenotypes, and bioinformatic algorithms were used to evaluate competitive endogenous RNA (ceRNA) networks.Thirty lncRNA-miRNA-mRNA interactions were identified, including two upregulated lncRNAs, 30 upregulated miRNAs, and two downregulated miRNAs. Based on the expression levels of DEmRNAs, DELncRNAs, and DEmiRNAs, 30 ceRNA networks were constructed. This study revealed, for the first time, biomarkers of lung tissue exosome RNA and the related networks of lncRNA in sepsis-induced ALI. We revealed a novel molecular mechanism of sepsis-induced ALI, which may support the diagnosis and treatment of sepsis-induced ALI.
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