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Ischemia Reperfusion of Lung Transplant Setting Differentially Regulates Transcriptomic Profiles between Human Lung Endothelial and Epithelial Cells

ABSTRACT: Ischemia Reperfusion of Lung Transplant Setting Differentially Regulates Transcriptomic Profiles between Human Lung Endothelial and Epithelial Cells

PROVIDER: PRJNA722486 | ENA |

REPOSITORIES: ENA

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Ischemia Reperfusion of Lung Transplant Setting Differentially Regulates Transcriptomic Profiles between Human Lung Endothelial and Epithelial Cells

Project description:Our understanding on mechanisms of ischemia-reperfusion induced lung injury during lung preservation and transplantation is based on clinical observations and animal studies. Herein, we used cell and systems biology approaches to explore these mechanisms at transcriptomics levels, especially by focusing on the differences between human lung endothelial and epithelial cells, which are crucial for maintaining essential lung structure and function. Human pulmonary microvascular endothelial cells and human lung epithelial cells were cultured to confluent, subjected to different cold ischemic time (CIT) to mimic static cold storage with preservation solution, and then subjected to warm reperfusion with serum containing culture medium to similar lung transplantation. Cell morphology, viability and transcriptomic profiles were studied. Ischemia-reperfusion induced a CIT time-dependent cell death, which was associated with dramatic changes in gene expression. Under normal control conditions, endothelial cells showed gene clusters enriched in vascular process and inflammation, while epithelial cells showed gene clusters enriched in protein biosynthesis and metabolism. CIT 6 h alone or after reperfusion had little effects on these phenotypic characteristics. After CIT 18 h, protein biosynthesis related gene clusters disappeared in epithelial cells; after reperfusion, metabolism-related gene cluster in epithelial cells and multiple gene clusters in the endothelial cells also disappeared. Human pulmonary endothelial and epithelial cells have distinct phenotypic transcriptomic signatures. Severe cellular injury reduces these gene expression signatures in a cell type dependent manner. Therapeutics that preserve these transcriptomic signatures may represent new treatment to prevent acute lung injury during lung transplantation.

2021-04-17 | GSE172222 | GEO

Lung transplantation-induced cold ischemia–reperfusion injury in the murine lung

Project description:Cold ischemia-reperfusion induced injury contributes to poor lung transplant outcomes. We used transcriptome sequencing to study the biological response of mouse lungs to the cold ischemia-reperfusion process. Mouse orthotopic left LTx was performed with standard cuff techniques. Briefly, the donor lungs were recovered after being flushed with 10ml low potassium dextran (LPD) solution and inflated with 50% oxygen. Cold ischemia was induced by storing donor lungs in 20ml LPD at 4°C for 24 hours. Then, the left donor lung was cuffed and implanted into recipients within 45 minutes. After the 4-hour reperfusion, the recipient mice were sacrificed and the transplanted lungs were collected.

2023-01-20 | GSE222957 | GEO

Gene Expression Changes due to Rat Lung Ischemia-Reperfusion Injury

Project description:Ischemia-reperfusion injury (IRI) is a major cause of morbidity and mortality following conventional lung transplantation and warm ischemia may limit success of transplanting lungs from non-heart-beating donors. We sought to determine alterations in gene expression in rat lung tissue subjected to warm ischemia in vivo followed by reperfusion. Keywords: time course

2019-04-30 | GSE9634 | GEO

Expression data from lung tissues of minipig with left lung ischemia-reperfusion

Project description:Lung ischemia-reperfusion (I/R) injury remains one of the common complications after various cardiopulmonary surgeries. I-R injury represents one potentially maladaptive response of the innate immune system which is featured by an exacerbated sterile inflammatory response triggered by tissue damage. Thus, understanding the key components and processes involved in sterile inflammation during lung I-R injury is critical to alter care and extend survival for patients with acute lung injury. We constructed a minipig surgical model of transient unilateral left pulmonary artery occlusion without bronchial involvement to create ventilated lung I-R injury. Lung tissues from minipig with sham operation (one sample), left side lung tissues (the operated side)(one sample) and right side lung tissues (the non-operated side)(one sample) from minipig with lung ischemia-reperfusion were submitted for gene expression array analysis.

2015-12-07 | E-GEOD-75560 | biostudies-arrayexpress

Ischemia–reperfusion injury in the murine lung

Project description:Lung ischemia–reperfusion (IR) injury increases the mortality and morbidity of patients undergoing lung transplantation. The objective of this study was to determine the key initiator of lung IR injury and to evaluate pharmacological therapeutic approaches using a functional inhibitor against the identified molecule. In a mouse hilar clamp model, the combination of RNA sequencing revealed that neutrophils-derived S100A8/A9 plays a central role in inflammatory reactions in lung IR injury.

2022-11-24 | GSE203238 | GEO

Pulmonary gene expression after ischemia reperfusion in young and old mice

Project description:To examine the age-related vulnerability to lung ischemia reperfusion injury, pulmonary gene expression profiles after lung ischemia reperfusion were compared between young and old mice.

2024-04-06 | GSE211951 | GEO

Effects of ischemia reperfusion injury or nephrectomy on mouse lung

Project description:Experiments in rodents have shown that kidney ischemia/reperfusion injury (IRI) facilitates lung injury and inflammation. To identify potential ischemia-specific lung molecular pathways involved, we conducted global gene expression profiling of lung 6 or 36 hours following 1) bilateral kidney IRI, 2) bilateral nephrectomy (BNx), and 3) sham laparotomy in C57BL/6J mice. Total RNA from whole lung was isolated and hybridized to 430MOEA (22,626 genes) GeneChips (n=3/group). Keywords: different time points after different treatments

2007-05-30 | GSE6730 | GEO

Transcriptomics of Human Liver Ischemia and Reperfusion Injury

Project description:For orthotopic liver transplants, ischemia-reperfusion injury (IRI) is known to compromise allograft survival. To better understand the transcriptomics of immune responses underlying liver transplant IRI, RNA-seq was performed on liver biopsies from 23 IRI+ and 17 IRI- patients, both pre-transplant and post-transplant. Genes that are differentially expressed in IRI+ samples, along with the pathways enriched for by those genes, were identified.

2020-08-07 | GSE151648 | GEO

Expression of Human Lung Before and After Transplantation

Project description:Ischemia reperfusion induced injury contributes to poor lung transplant outcomes. We used microarrays to study the biological response of human lungs to the ischemia reperfusion process. Samples were collected from lung transplant cases at Toronto General Hospital. Lungs were donation after brain death (DBD)

2020-06-22 | GSE127003 | GEO

Expression data from lung tissues of minipig with left lung ischemia-reperfusion

2015-12-07 | GSE75560 | GEO

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