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Comparison of miRNA profile in body fluids (plasma and bronchoalveolar fluid cytology)

ABSTRACT: The objective is to obtain miRNA representative signatures both in plasma and bronchoalveolar cell fraction that could serve as biomarker in respiratory diseases. The identification of new less invasive biomarkers is necessary to improve the detection and prognostic outcome of respiratory pathological processes. The measurement of miRNA expression through less invasive techniques such as plasma and serum have been suggested to analysis of several lung malignancies including lung cancer. These studies are assuming a common deregulated miRNA expression both in blood and lung tissue. The present study aimed to obtain miRNA representative signatures both in plasma and bronchoalveolar cell fraction that could serve as biomarker in respiratory diseases.

ORGANISM(S): Homo sapiens

PROVIDER: GSE33045 | GEO | 2011/10/20

SECONDARY ACCESSION(S): PRJNA149469

REPOSITORIES: GEO

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Comparison of miRNA profile in body fluids (plasma and bronchoalveolar fluid cytology)

Project description:The objective is to obtain miRNA representative signatures both in plasma and bronchoalveolar cell fraction that could serve as biomarker in respiratory diseases. The identification of new less invasive biomarkers is necessary to improve the detection and prognostic outcome of respiratory pathological processes. The measurement of miRNA expression through less invasive techniques such as plasma and serum have been suggested to analysis of several lung malignancies including lung cancer. These studies are assuming a common deregulated miRNA expression both in blood and lung tissue. The present study aimed to obtain miRNA representative signatures both in plasma and bronchoalveolar cell fraction that could serve as biomarker in respiratory diseases. we have compared circulating plasma miRNA with the bronchoalveolar cell fraction-derived miRNA patterns from 10 patients with several lung disease using a RT-qPCR assay.

2011-10-20 | E-GEOD-33045 | biostudies-arrayexpress

Integrative ‘omic analysis of experimental bacteremia identifies a metabolic signature that distinguishes human sepsis from SIRS

Project description:Rationale: Sepsis is a leading cause of morbidity and mortality; early diagnosis and prediction of progression is difficult to determine. The integration of metabolomic and transcriptomic data in an experimental model of sepsis may be a novel method to identify molecular signatures of clinical sepsis. Objectives: Develop a biomarker panel for earlier diagnosis and prognostic characterization of sepsis patients to inform personalized clinical management and improve understanding of the pathophysiology of sepsis progression. Methods: Mild to severe sepsis, lung injury and death was recapitulated in Macaca fascicularis by intravenous inoculation of Escherichia coli. Plasma samples were obtained at time of challenge and at one, three, and five days later or time of euthanasia. Necropsy was performed and blood, lung, kidney and spleen samples were obtained. An integrative analysis of comprehensive metabolomic and transcriptomic datasets was performed to identify and parameterize a biomarker panel. Measurements and Main Results: Pathogen invasion, respiratory distress, lethargy and mortality was dose dependent. Severe infection and death were associated with metabolomic and transcriptomic changes indicative of mitochondrial, peroxisomal and liver dysfunction. Analysis of reciprocal pulmonary transcriptome and plasma metabolome data revealed an integrated host response that suggested dysregulated fatty acid catabolism resulting from peroxisome-proliferator activated receptor signaling. A representative 4-metabolite model effectively diagnosed sepsis in primates (AUC 0.966) and in two human sepsis cohorts (AUC=0.78 and 0.82). Conclusion: A model to guide early management of patients with sepsis was developed by analysis of reciprocal metabolomic and transcriptomic data in primates that diagnosed sepsis in humans. Transcriptomic analysis of lungs from Cynomolgus macaques challenged with E. coli

2015-07-03 | E-GEOD-59075 | biostudies-arrayexpress

MicroRNAs into body fluids from ten organs of mice exposed to cigarette smoke

Project description:The purpose of the present study was to validate the application of this epigenetic biomarker by using less invasive collection procedures.Using microarray analyses, we measured 1135 microRNAs in 10 organs and 3 body fluids of mice that were either unexposed or exposed to mainstream cigarette smoke for up to 8 weeks. The results obtained with selected miRNAs were validated by qPCR The lung was the main target effected by smoke (190 dysregulated miRNAs), followed by skeletal muscle (180), liver (138), blood serum (109), kidney (96), spleen (89), stomach (36), heart (33), bronchoalveolar lavage fluid (32), urine (27), urinary bladder (12), colon (5), and brain (0). Skeletal muscle, kidney, and lung were the most important sources of smoke-altered microRNAs in blood serum, urine, and bronchoalveolar lavage fluid, respectively

2018-04-30 | GSE107962 | GEO

The transcriptional alteration and non-invasive biomarker potential of peripheral blood microRNAs in patients with early-onset pre-eclampsia

Project description:Early-onset preeclampsia (EOPE) is a severe pregnancy complication associated with significant maternal and fetal morbidity and mortality. Currently, there is a critical need for accurate, non-invasive biomarkers to facilitate early diagnosis and effective management of EOPE. In this study, we aimed to investigate the transcriptional alterations and non-invasive biomarker potential of peripheral blood microRNAs in patients with EOPE. Through our research, we successfully identified two reliable plasma miRNA biomarkers and proposed a circulating two-miRNA panel for the non-invasive early detection of EOPE. Additionally, we independently validated our findings in different patient cohorts using various technological platforms.

2023-06-14 | GSE234611 | GEO

Contrasting inflammatory signatures in peripheral blood and bronchoalveolar cells reveal compartment-specific effects of HIV infection

Project description:The mechanisms by which HIV increases susceptibility to tuberculosis and other respiratory infections are incompletely understood. We used transcriptomics of paired whole bronchoalveolar lavage (BAL) fluid and peripheral blood mononuclear cells to compare the effect of HIV at the lung mucosal surface and in the peripheral blood. The large majority of HIV-induced differentially expressed genes (DEGs) were specific to either the peripheral or lung mucosa compartments (1,307/1,404, 93%). Type I interferon signaling was the dominant signature of DEGs in HIV-positive blood with a less dominant and qualitatively distinct type I interferon gene set expression pattern in HIV-positive BAL. DEGs in the HIV-positive BAL were significantly enriched for infiltration with cytotoxic CD8+ T cells. Higher expression of representative transcripts and proteins in BAL CD8+ T cells during HIV infection, including IFNG (IFN-), GZMB (Granzyme B) and PDCD1 (PD-1), was confirmed by cell-subset specific transcriptional analysis and flow cytometry. Thus, we report that a whole transcriptomic approach revealed qualitatively distinct effects of HIV in blood and bronchoalveolar compartments. Further work exploring the impact of distinct type I interferon programs and CD8+ T cells infiltration of the lung mucosa during HIV infection may provide novel insights into HIV-induced susceptibility to respiratory pathogens.

2020-05-26 | GSE139327 | GEO

BALF proteomics - In-depth proteomic analysis of human bronchoalveolar lavage fluid towards the biomarker discovery for lung cancers

Project description:Lung cancer is one of the most common cancers and the leading cause of cancer-related mortality. Because the early diagnosis of the cancer is one of the major goals in lung cancer research, the molecule-based sensitive detection of biomarkers from bronchoalveolar lavage fluid (BALF) to diagnose the lung cancer has been suggested as a promising method. BALF is a fluid that can be easily obtained from patients with lung diseases and the process of collecting the fluid is relatively cheap and non-invasive. Here, we developed a novel method for in-depth single proteomic analysis of BALF by using antibody-based depletion of high abundant proteins from BALF. We identified, in total, 4,615 protein groups mapped to 4,535 gene names using LC-MS/MS. We found our method outperformed conventional methods. With the comprehensive result, we believe that this method would facilitate lung cancer biomarker discovery.

2019-05-30 | PXD012645 | Pride

Predictive protein biomarker signatures and the corresponding transcriptional cell state changes in human lung fibrosis (Plasma)

Project description:Single cell genomics enables characterization of disease specific cell states, while improvements in mass spectrometry workflows bring the clinical use of body fluid proteomics within reach. However, the correspondence of peripheral protein signatures to changes in cell state in diseased organs is currently unknown. Here, we leverage single cell RNA-seq and proteomics from large patient cohorts of pulmonary fibrosis to establish that predictive protein signatures in body fluids correspond to specific cellular changes in the lung. We determined transcriptional changes in 45 cell types across three patient cohorts and quantified bronchoalveolar lavage fluid and plasma proteins to discover protein signatures and associated cell state changes that were linked to diagnosis, lung function, smoking and injury status. Altered expression of the novel marker of lung health CRTAC1 in alveolar epithelium is robustly reported in patient plasma. With further improvements of this concept and deeper coverage of plasma proteomes, we envision future longitudinal profiling of body fluid signatures coupled to machine learning for non-invasive prediction and monitoring of pathological cell state changes in patient organs.

2020-09-18 | PXD017210 | Pride

Predictive protein biomarker signatures and the corresponding transcriptional cell state changes in human lung fibrosis

Project description:Single cell genomics enables characterization of disease specific cell states, while improvements in mass spectrometry workflows bring the clinical use of body fluid proteomics within sight. However, the correspondence of peripheral protein signatures with cell state changes in diseased organs is currently unknown. Here, we use single cell RNA-seq and proteomics from large patient cohorts of pulmonary fibrosis and establish that predictive protein signatures in body fluids correspond to specific cellular changes in the lung. We determined transcriptional changes in 45 cell types across three patient cohorts and quantified bronchoalveolar lavage fluid and plasma proteins to discover protein signatures and associated cell state changes that were linked to diagnosis, lung function, smoking and injury status. Altered expression of the novel marker of lung health CRTAC1 in alveolar epithelium is robustly reported in patient plasma. With further improvements of this concept and deeper coverage of plasma proteomes, we envision future longitudinal profiling of body fluid signatures coupled to deep learning for non-invasive prediction and monitoring of pathological cell state changes in patient organs.

2020-09-18 | PXD017145 | Pride

Identification of plasma microRNA as a novel diagnostic and prognostic biomarker in pancreatic cancer

Project description:We identified plasma microRNA as a useful biomarker for Pancrearic cancer through miRNA-based approach comparing plasma levels between PCa patients and healthy volunteers.

2017-08-11 | GSE92424 | GEO

Identification of pro-fibrotic macrophages populations by scRNA-seq in West Highland white terriers affected with canine idiopathic pulmonary fibrosis

Project description:We used the scRNA-seq to characterize disease-related heterogeneity within cell populations of macrophages/monocytes in the bronchoalveolar lavage fluid from West Highland white terriers either healthy or affected with canine idioapthic pulmonary fibrosis. The disease is still not well understood, occurs in old West Highland white terriers and results from deposition of fibrotic tissue in the lung parenchyma causing respiratory failure.

2020-12-02 | E-MTAB-9623 | biostudies-arrayexpress

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