Transcriptomic Profiling of Fibrosis-Specific Epithelial Cells in Idiopathic Pulmonary Fibrosis
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE151673 | GEO | 2020/06/18
REPOSITORIES: GEO
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Project description:Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive and highly lethal lung disease with unknown etiology and poor prognosis.
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Project description:Idiopathic pulmonary fibrosis (IPF), a chronic progressive lung disease of unknown etiology, is characterized by the expansion of myofibroblasts and abnormal deposition of extracellular matrix in the lung parenchyma. To elucidate the molecular mechanisms that lead to IPF, we analyzed myofibroblasts established from patients with IPF by oligonucleotide microarrays. Gene expression profiles revealed a novel pathophysiologic function of myofibroblasts as a generator of reactive oxygen species, and a self-defense mechanism against oxidative stress of their own generating. Experiment Overall Design: We isolated two myofibroblast cell culture from patients with idiopathic pulmonary fibrosis. Embryonic pulmonary fibroblast was used for the reference.
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Project description:The aim of the current study is to find plasma-based biomarker candidates for Idiopathic Pulmonary Fibrosis (IPF). Incidence of IPF seems to be increasing in Europe and there is significant mortality associated with IPF. There are no sensistive biomarkers for IPF and diagnosis is entirely clinical and/or histopathological which is often delayed. Minimally invasive biomarkers of IPF would be expected to aid clinicians perfrom early diagnosis of IPF enabling better management of the disease.
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Project description:Analysis of Idiopathic pulmonary fibrosis (IPF) at gene expression level. The hypothesis tested in the present study was that Epigenetic mechanisms are likely to be associated with pathogenesis in IPF. To determine the DNA methylation change, and their effects on gene expression, we compared microarray data of DNA methylation and RNA expression. Results provide that among the genes whose DNA methylation status and RNA expression were both significantly altered between IPF-rapid and normal controls. Total RNA obtained from Idiopathic pulmonary fibrosis samples.
2015-10-31 | E-GEOD-71351 | biostudies-arrayexpress
Project description:Idiopathic pulmonary fibrosis (IPF) is an untreatable fibrotic lung disease characterized by fibroblast proliferation and epithelial mesenchymal transition. The expression and role of microRNAs (miRNA) has not been studied in IPF. Using miRNA expression microarrays we identified 46 differentially expressed miRNA in IPF lungs which included let-7d and the miR-30 family. Keywords: miRNA expression Lung tissue samples for microarray analysis were obtained through the University of Pittsburgh Health Sciences Tissue Bank. Ten samples were obtained from surgical remnants of biopsies or lungs explanted from patients with IPF who underwent pulmonary transplant, and ten control normal lung tissues obtained from the disease free margins with normal histology of lung cancer resection specimens. The morphologic diagnosis of IPF was based on typical microscopic findings consistent with usual interstitial pneumonia. Total RNA was labeled with Cy3 and hybridized on Agilent 8X15K microRNA array (Agilent Technologies, Santa Clara, CA). After 20 hours hybridization, arrays were washed and scanned according to the manufacturerâs protocol.
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Project description:Idiopathic pulmonary fibrosis (IPF) is an untreatable fibrotic lung disease characterized by fibroblast proliferation and epithelial mesenchymal transition. Using miRNA expression microarrays we identified 96 differentially expressed miRNA in IPF lungs which included let-7d, miR-30 family, miR-29 family and miR-154 family.
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Project description:Idiopathic pulmonary fibrosis (IPF) is a lethal fibrotic lung disease characterized by enhanced fibroblast proliferation, collagen synthesis, extracellular matrix deposition. We obtained 28 IPF patient lung tissue samples from the Lung Tissue Research Consortium (LTRC). Here we determined the miRNA expression profiles in these IPF lung samples.
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Project description:Idiopathic pulmonary fibrosis (IPF) is an untreatable fibrotic lung disease characterized by fibroblast proliferation and epithelial mesenchymal transition. Using miRNA expression microarrays we identified 96 differentially expressed miRNA in IPF lungs which included let-7d, miR-30 family, miR-29 family and miR-154 family. Lung tissue samples for microarray analysis were obtained through the University of Pittsburgh Health Sciences Tissue Bank. 13 samples were obtained from surgical remnants of biopsies or lungs explanted from patients with IPF who underwent pulmonary transplant, and 12 control normal lung tissues obtained from the disease free margins with normal histology of lung cancer resection specimens. The morphologic diagnosis of IPF was based on typical microscopic findings consistent with usual interstitial pneumonia. Total RNA was labeled with Cy3 and hybridized on Agilent 8X15K microRNA array (Agilent Technologies, Santa Clara, CA). After 20 hours hybridization, arrays were washed and scanned according to the manufacturer’s protocol.
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Project description:Analysis of gene expression of lung fibroblasts seeded onto decellularized extracellular matrix (ECM). Experiment had 2x2 design where fibroblasts from idiopathic pulmonary fibrosis (IPF) or control patients were seeded onto decelluarized lung tissue from IPF or control patients allowing for determination of gene expression differences that were driven by IPF ECM and which differences were driven by the IPF fibroblast. Lung fibroblasts from 5 patients with idiopathic pulmonary fibrosis and 5 control patients were cultured on decellularized ECM from IPF or control lung. Total RNA and polyribosome RNA were isolated after the cells were cultured on the decellularized ECM for 18 hours. When possible, a control cell line and a diseased cell line were cultured (and processed) simultaneously to minimize the effect of experimental variance induced by running the experiment at different times.Samples with the same batch number (provied in the sample 'characteristics' field) were cultured and processed at the same time.
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Project description:Idiopathic pulmonary fibrosis (IPF) is an untreatable fibrotic lung disease characterized by fibroblast proliferation and epithelial mesenchymal transition. The expression and role of microRNAs (miRNA) has not been studied in IPF. Using miRNA expression microarrays we identified 46 differentially expressed miRNA in IPF lungs which included let-7d and the miR-30 family. Keywords: miRNA expression
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