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Expression data from peripheral blood mononuclear cells(PBMCs) of patients with bronchial asthma and normal controls

ABSTRACT: Expression data from peripheral blood mononuclear cells(PBMCs) of patients with bronchial asthma and normal controls

PROVIDER: PRJNA698605 | ENA |

REPOSITORIES: ENA

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Expression data from peripheral blood mononuclear cells(PBMCs) of patients with bronchial asthma and normal controls

Project description:Bronchial asthma is a heterogeneous disease with distinct disease phenotypes and underlying pathophysiological mechanisms. LncRNAs involves in numerous functionally different biological and physiological processes. The aim of this study is to identify the differentially expressed lncRNAs and mRNAs in patients with asthma and to further explore the functions and interactions between lncRNAs and mRNAs. Ten patients with asthma and 9 healthy controls were enrolled in this study. We used microarray analysis to identify lncRNA and mRNA expression in their PBMC.

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Differentially expressed profile of LncRNA in PBMCs (peripheral blood mononuclear cells) of asthma patients

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Gene Expression Patterns in Peripheral Blood Mononuclear Cells Associated with Asthma Exacerbation Attack

Project description:A large, prospective, non-interventional study was designed to study gene expression changes in peripheral blood mononuclear cells (PBMCs) associated with asthma exacerbations over the course of a year. PBMC samples were collected from subjects at the time of the study visits defined as 1) Quiet: during stable disease at 3 month intervals, 2) Exacerbation: during a 14 day period of deteriorating asthma and 3) Follow-up: within 14 days after cessation of an exacerbation. Gene expression levels during stable asthma, exacerbation, and two weeks after an exacerbation were compared. This series of samples comprises of peripheral blood mononuclear cells (PBMCs) collected during the following study visits (a) quiet (N=394 samples from 118 subjects), (b) exacerbation (N=166 samples from 118 subjects) and (c) follow-up (N=125 samples from 102 subjects)

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Differentially expressed profile of LncRNA in PBMCs (peripheral blood mononuclear cells) of asthma patients

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Project description:Transcriptional profiling of lung bronchial biospsy mRNA from asthmatics Two-condition experiment, mRNA from asthma bronchial biopsies for test channel and Stratagene Universal Human Reference RNA for reference channel.

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Segmental Bronchial Allergen Challenge Elicits Distinct Metabolic Phenotypes in Allergic Asthma

Project description:Asthma is a complex syndrome associated with episodic decompensations provoked by aeroaller-gen exposures. The underlying pathophysiological states driving exacerbations are latent in the resting state and do not adequately inform biomarker-driven therapy. A better understanding of the pathophysiological pathways driving allergic exacerbations is needed. We hypothesized that disease-associated pathways could be identified in humans by unbiased metabolomics of bron-choalveolar fluid (BALF) during the peak inflammatory response provoked by a bronchial aller-gen challenge. We analyzed BALF metabolites in samples from 12 volunteers who underwent segmental bronchial antigen provocation (SBP-Ag). Metabolites were quantified using liquid chromatography-tandem mass spectrometry (LC–MS/MS) followed by pathway analysis and cor-relation with airway inflammation. SBP-Ag induced statistically significant changes in 549 fea-tures that mapped to 72 uniquely identified metabolites. From these features, two distinct induci-ble metabolic phenotypes were identified by the principal component analysis, partitioning around medoids (PAM) and k-means clustering. Ten index metabolites were identified that in-formed the presence of asthma-relevant pathways, including unsaturated fatty acid produc-tion/metabolism, mitochondrial beta oxidation of unsaturated fatty acid, and bile acid metabolism. Pathways were validated using proteomics in eosinophils. A segmental bronchial allergen chal-lenge induces distinct metabolic responses in humans, providing insight into pathogenic and pro-tective endotypes in allergic asthma.

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SINGLE-CELL CHARACTERIZATION OF A MODEL OF POLY I:C-STIMULATED PERIPHERAL BLOOD MONONUCLEAR CELLS IN SEVERE ASTHMA

Project description:Background: Asthma has been associated with impaired interferon response. Multiple cell types have been implicated in such response impairment and may be responsible for asthma immunopathology. However, existing models to study the immune response in asthma are limited by bulk profiling of cells. Our objective was to Characterize a model of peripheral blood mononuclear cells (PBMCs) of patients with severe asthma (SA) and its response to the TLR3 agonist Poly I:C using two single-cell methods. Methods: Two complementary single-cell methods, DropSeq for single-cell RNA sequencing (scRNA-Seq) and mass cytometry (CyTOF), were used to profile PBMCs of SA patients and healthy controls (HC). Poly I:C-stimulated and unstimulated cells were analyzed in this study. Results: PBMCs (n=9,414) from five SA (n=6,099) and three HC (n=3,315) were profiled using scRNA-Seq. Six main cell subsets, namely CD4+ T cells, CD8+ T cells, natural killer (NK) cells, B cells, dendritic cells (DCs), and monocytes, were identified. CD4+ T cells were the main cell type in SA and demonstrated a pro-inflammatory profile characterized by increased JAK1 expression. Following Poly I:C stimulation, PBMCs from SA had a robust induction of interferon pathways compared with HC. CyTOF profiling of Poly I:C stimulated and unstimulated PBMCs (n=160,000) from the same individuals (SA=5; HC=3) demonstrated higher CD8+ and CD8+ effector T cells in SA at baseline, followed by a decrease of CD8+ effector T cells after poly I:C stimulation. Conclusions: Single-cell profiling of an in vitro model using PBMCs in patients with SA identified activation of pro-inflammatory pathways at baseline and strong response to Poly I:C, as well as quantitative changes in CD8+ effector cells. Thus, transcriptomic and cell quantitative changes are associated with immune cell heterogeneity in this model to evaluate interferon responses in severe asthma.

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miR from peripheral blood mononuclear cells' (PBMCs') exosome

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