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ABSTRACT: sepsis-induced acute lung injury

PROVIDER: PRJNA836168 | ENA |

REPOSITORIES: ENA

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			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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Gut-derived memory γδ T17 cells exacerbate sepsis-induced acute lung injury [ChIP-seq]

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.

2024-06-14 | GSE266492 | GEO

Gut-derived memory γδ T17 cells exacerbate sepsis-induced acute lung injury [scRNA-seq]

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The role of EZH2 in sepsis-induced acute lung injury [RNA-Seq]

Project description:To investigate the role of EZH2 in sepsis-induced acute lung injury, we established a mouse model of sepsis in which macrophages specifically knocked out EZH2.We then used RNA-seq data from lung tissues of four groups of mice for gene expression profiling.

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Single-cell RNA-seq of Bronchoalveolar Lavage Fluid Immune Cells from Padi2/Padi4 Double Knock-out Mice in Pseudomonas aeruginosa Pneumonia-induced Sepsis

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.

2024-11-30 | GSE274823 | GEO

Histone lactylation drives endothelial activation-mediated lung injury in sepsis-associated ARDS via promoting ferroptosis

Project description:The activation of pulmonary endothelial cells (ECs) triggers the occurrence of lung injury and is a hallmark of sepsis-associated acute respiratory distress syndrome(ARDS). Aberrant metabolism favoring glycolysis plays a pivotal role in the pathogenesis of sepsis-induced EC activation. Herein we demonstrate that glycolysis-related histone lactylation, represented by H3K14 lactylation (H3K14la), drives sepsis-associated EC activation and lung injury. Accordingly, H3K14la level is elevated in injured lung tissue and activated ECs. Inhibition of lactate production suppresses both H3K14la levels and EC activation in response to lipopolysaccharide (LPS). We also show that lactate-dependent H3K14la is enriched at the promoters of ferroptosis-related genes, thereby inducing ferroptosis in ECs, and inhibiting ferroptosis effectively ameliorates EC activation. Taken together, elevated lactate in sepsis modulates EC activation and lung injury via histone lactylation and manipulation of glycolysis/H3K14la/ferroptosis axis may provide novel therapeutic approaches for the treatment of sepsis-associated ARDS.

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Molecular mechanism of interaction between IL1B + alveolar resident macrophages and pulmonary endothelial cells in sepsis induced lung injury based on single-cell RNA seq

Project description:Sepsis is a serious systemic inflammatory reaction, which often leads to acute lung injury, and then affects lung function. This study aimed to explore the molecular mechanism of the interaction between il1b+ alveolar resident macrophages and pulmonary endothelial cells during sepsis induced lung injury using single-cell RNA sequencing technology.

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Gene expression profiling in lung tissues of an animal model of sepsis-induced acute lung injury

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.

2015-07-01 | E-MTAB-2673 | biostudies-arrayexpress

Sepsis-induced acute lung injury is exacerbated by pulmonary Wnt signaling-dependent migration of small intestinal memory γδT17 cells to the lung

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.

2024-04-24 | PXD051763 |

H3K14la drives endothelial dysfunction in sepsis-induced ARDS via promoting SLC40A1/TFR-mediated ferroptosis

Project description:Background: Pulmonary endothelial cell (EC) activation is a key factor in acute respiratory distress syndrome (ARDS). In sepsis, increased glycolysis leads to lactate buildup, which induces lysine lactylation (Kla) on histones and other proteins. However, the role of protein lactylation in EC dysfunction during sepsis-induced ARDS remains unclear. Methods: Integrative lactylome and proteome analysis was performed to identify the global lactylome profiling in lung tissues of septic mice. Cut&Tag analysis were used to identify the transcriptional targets of histone H3 lysine 14 lactylation (H3K14la) in ECs. Results: Septic mice exhibited elevated levels of lactate and H3K14la in lung tissues, particularly in pulmonary ECs. Suppressing glycolysis reduced both H3K14la and EC activation, suggesting a link between glycolysis and lactylation. Moreover, H3K14la was found to be enriched at promoter regions of ferroptosis-related genes such as transferrin receptor (TFRC) and solute carrier family 40 member 1 (SLC40A1), which contributed to EC activation and lung injury under septic conditions. Conclusions: We for the first time reported the role of lactate-dependent H3K14 lactylation in regulating EC ferroptosis to promote vascular dysfunction during sepsis-induced lung injury. Our findings suggest that manipulation of glycolysis/H3K14la/ferroptosis axis may provide novel therapeutic approaches for sepsis-associated ARDS.

2025-05-07 | PXD056805 | Pride

Lung Tissue Exosome-Mediated Delivery of ceRNA Networks as a Novel Mechanism for Sepsis-induced Acute Lung Inflammation (miRNA-Seq)

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.

2023-12-31 | GSE227365 | GEO

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