Single Nuclear RNAseq and MultiOme of IPF and Control Lung Tissue
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE286182 | GEO | 2025/04/17
REPOSITORIES: GEO
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Project description:Idiopathic pulmonary fibrosis (IPF)
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Project description:To understand the cellular composition and transcriptional phenotype of fibrotic lung tissue we performed single-cell RNA-seq on stromal, immune, epithelial, and endothelial cell populations from human lung explants. Tissue was collected from normal control lungs, patients with idiopathic pulmonary fibrosis (IPF), and patients with systemic sclerosis associated interstitial lung disease (SSc-ILD). Using the 10X Genomics Chromium platform, we generated transcriptional profiles of approximately 200,500 cells across 4 IPF, 3 SSc-ILD and 3 normal control lungs.
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Project description:Viruses in acute exacerbations of idiopathic pulmonary fibrosis Keywords: viral detection BAL from patients with acute exacerbations of IPF and stable IPF were hybridized to a pan-viral cDNA microarray to evaluate the presence of virus during these episodes
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Project description:Tissue fibrosis is a common pathological outcome of chronic disease that markedly impairs organ function leading to morbidity and mortality. In the lung, idiopathic pulmonary fibrosis (IPF) is an insidious and fatal interstitial lung disease associated with declining pulmonary function. Single cell RNA sequencing was used to map epithelial cell types of the normal human airway and alveolaor as well as IPF explant tissue.
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Project description:The activated fibroblast is the central effector cell for the progressive fibrotic process that characterizes idiopathic pulmonary fibrosis (IPF). An understanding of the genomic phenotype of this cell in isolation is essential to the understanding of disease pathogenesis and is integral to strategizing therapeutic trials. Employing a unique technique that minimizes cellular phenotypic alterations, we characterized the genomic phenotype of non-cultured pulmonary fibroblasts from the lungs of patients with advanced IPF. This approach revealed several novel genes and pathways previously unreported in IPF fibroblasts. Specifically, we demonstrate altered expression in proteasomal constituents, ubiquitination mediators, the Wnt pathway and several cell cycle regulators suggestive of loss of normal cell cycle controls. The pro-inflammatory cytokine CXCL12 was also up-regulated which may provide a mechanism for fibrocytes’ recruitment, while up-regulated oncogenic KIT may promote fibroblast over proliferation. Paradoxically, pro-apoptotic inducers such as death inducing ligand TRAIL (TNFSF10) and pro-apoptotic Bax were also up-regulated. This comprehensive description of altered gene expression within IPF fibroblasts sheds further light on the complex interactions that characterize IPF. Further studies including therapeutic interventions directed at these pathways hold promise for the treatment of this devastating disease. 58 samples of total RNA isolated from 12 lungs of patients with end-stage idiopathic pulmonary fibrosis and 6 donors of normal lungs (controls) who were designated brain dead, non-diseased donors whose lungs failed criteria for transplantation and who were organ donors for research. RNA extraction followed the Qiagen RNeasy Kit using QIshredder columns for shredding of DNA contiminants. Experimental/control samples were amplified amino-allylated RNA labeled with Cy5 and Stratagene Reference RNA was amplified and amino-allylated and labeled with Cy3. Amplification was one round using Ambion MessageAmp II kit with amino-allylated UTP according to the protocol of the Duke University Institute for Genome Sciences and Policy. Amplification and amino-allylation of the Stratagene Reference RNA and Hybridization of Reference with patient samples and controls was done by the Duke Institute for Genomic Sciences and Policy.
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Project description:Microarray analysis to examine glycan-related gene expression in idiopathic pulmonary fibrosis Heparan sulfate 6-O-endosulfatases (Sulf1 and Sulf2) remove 6-O sulfate groups from heparan sulfate intra-chain sites on the cell surface and in the extracellular matrix, and modulate the functions of many growth factors and morphogens including FGF, Wnt and TGF-beta. Works from our laboratory have shown that TGF-beta 1 induces Sulf1 and Sulf2 expression in a cell-type specific manner in the lung, specifically Sulf1 in lung fibroblasts and Sulf2 in type II alveolar epithelial cells. Interestingly TGF-beta 1-induced Sulf1 and Sulf2 in turn modulate TGF-beta 1 function in culture. The aim of this study is to examine the expression of Sulf1 and Sulf2 as well as other glycan-related genes (heparan biosynthetic enzymes, TGF-beta, FGF and Wnt signaling pathway components) in human idiopathic pulmonary fibrosis (IPF) lungs compared to normal lung samples. We will examine gene expression in triplicate samples from RNA of total lung homogenates from IPF and control (normal) lungs
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Project description:There is microscopic spatial and temporal heterogeneity of pathologic changes in idiopathic pulmonary fibrosis (IPF) lung tissue, which may relate to heterogeneity in pathophysiological mediators of disease and clinical progression. We measured gene expression in samples from lung biopsies or explants in order to assess relationships with pathological features and systemic biomarkers. RNA was extracted directly from lung tissue samples from 40 IPF patients or 8 healthy controls.
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Project description:Idiopathic pulmonary fibrosis (IPF) is a progressive lung disease. Although the pathogenesis is poorly understood, evidence suggests that genetic and epigenetic alterations, such as DNA methylation, may play a key role. We used microarrays to see the gene expression in IPF fibroblasts after demethylation agent 5'-azacytidine treatment. Human IPF lung fibroblasts were cultured and then treated with 5'-azacytidine 5uM 24 hours. RNA were extracted and hybridized on Affymetrix microarrays.
2016-02-16 | E-GEOD-69764 | biostudies-arrayexpress