Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA90227 | ENA |
REPOSITORIES: ENA
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Project description:IL-4 and IL-13 treatment of murine hepatic progenitor cells
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Project description:Selective stimulation of IL-4 receptor on smooth muscle induces airway hyper-responsiveness in mice. Abstract: Production of the cytokines IL-4 and IL-13 is increased in both human asthma and mouse asthma models and Stat6 activation by the common IL-4/IL-13R drives most mouse model pathophysiology, including airway hyperresponsiveness (AHR). However, the precise cellular mechanisms through which IL-4Rα induces AHR remain unclear. Overzealous bronchial smooth muscle constriction is thought to underlie AHR in human asthma, but the smooth muscle contribution to AHR has never been directly assessed. Furthermore, differences in mouse vs. human airway anatomy and observations that selective IL-13 stimulation of Stat6 in airway epithelium induces murine AHR raise questions about the importance of direct IL-4R effects on smooth muscle in murine asthma models and relevance of these models to human asthma. Using transgenic mice in which smooth muscle is the only cell type that expresses or fails to express IL-4Rα, we demonstrate that direct smooth muscle activation by IL-4, IL-13, or allergen is sufficient, but not necessary, to induce AHR and show that 5 genes known to promote smooth muscle migration, proliferation and contractility are activated by IL-13 in smooth muscle in vivo. These observations demonstrate that IL-4Rα promotes AHR through multiple mechanisms and provide a model for testing smooth muscle-directed asthma therapeutics.
2011-01-07 | GSE26476 | GEO
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Project description:Selective stimulation of IL-4 receptor on smooth muscle induces airway hyper-responsiveness in mice. Abstract: Production of the cytokines IL-4 and IL-13 is increased in both human asthma and mouse asthma models and Stat6 activation by the common IL-4/IL-13R drives most mouse model pathophysiology, including airway hyperresponsiveness (AHR). However, the precise cellular mechanisms through which IL-4Rα induces AHR remain unclear. Overzealous bronchial smooth muscle constriction is thought to underlie AHR in human asthma, but the smooth muscle contribution to AHR has never been directly assessed. Furthermore, differences in mouse vs. human airway anatomy and observations that selective IL-13 stimulation of Stat6 in airway epithelium induces murine AHR raise questions about the importance of direct IL-4R effects on smooth muscle in murine asthma models and relevance of these models to human asthma. Using transgenic mice in which smooth muscle is the only cell type that expresses or fails to express IL-4Rα, we demonstrate that direct smooth muscle activation by IL-4, IL-13, or allergen is sufficient, but not necessary, to induce AHR and show that 5 genes known to promote smooth muscle migration, proliferation and contractility are activated by IL-13 in smooth muscle in vivo. These observations demonstrate that IL-4Rα promotes AHR through multiple mechanisms and provide a model for testing smooth muscle-directed asthma therapeutics. For the microarray aspect of of the study, there were three groups of mice: 1. IL4R gene knockout (KO) mice 2. WT mice 3. IL4R KO mice that were also transgenic for a gene construct that expressed IL4R under the control of the smooth muscle-specific promoter from the SMP8 gene All mice were subjected to intratracheal IL13 exposure for 7 days, and whole lung RNA was prepared for microarray analysis 24 hours after the last instillation. Per treatment and genotype: Two RNA pools were made from four mice each. These were labeled and hybridized to make a total of 6 microarrays. RNA was labeled with the standard Affymetrix 3' labeling protocol to make cDNA that was hybridized to Mouse MOE 430 plus 2.0 GeneChips. Gene transcripts were identified that differed in their relative expression as a function of IL4R expression on the smooth muscle cells.
2011-01-07 | E-GEOD-26476 | biostudies-arrayexpress
Project description:Allergic asthma is a chronic inflammatory airway disease driven by the cytokine interleukin-13 (IL-13). Although IL-13 signals through the canonical JAK1/TYK2/STAT6 pathway, our understanding of the totality of IL-13-induced signaling intermediates is incomplete. To address this, we performed an unbiased phospho-proteomic analysis of IL-13-stimulated A549 human airway epithelial cells. IL-13 stimulation led to differential phosphorylation at 145 unique serine/threonine residues across 97 proteins involved in diverse cellular processes. These processes included RNA splicing, cytoskeletal remodeling, GTPase activity, and focal adhesion complex formation. Network analysis identified SRC, a non-receptor tyrosine kinase, as a potential upstream regulator of IL-13-induced changes in phosphorylation. Kinetic molecular approaches confirmed that SRC is rapidly activated following IL-13 stimulation, prior to activation of the canonical IL-13 signaling intermediate STAT6 in both human and mouse lung fibroblasts. Pharmacological inhibition of SRC reduced IL-13–induced STAT6 phosphorylation and downstream gene expression in vitro. In vivo, SRC antagonism attenuated IL-13–induced airway hyperresponsiveness (AHR) without significantly affecting inflammatory cell infiltration or gene expression in bronchoalveolar lavage fluid. These findings identify SRC as a novel and selective mediator of IL-13–driven airway responses and suggest that targeting SRC may offer therapeutic benefit in allergic asthma.
2025-12-05 | PXD066489 | Pride
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Project description:The IL-13 is a central mediator of allergic asthma. This project investigates the mechanisms by which IL-13 elicits the symptoms of asthma. Keywords: other
2004-04-14 | GSE1301 | GEO
Project description:The importance of unanchored Ub in innate immunity has been shown only for a limited number of unanchored Ub-interactors. We investigated what additional cellular factors interact with unanchored Ub and whether unanchored Ub plays a broader role in innate immunity. To identify unanchored Ub-interacting factors from murine lungs, we used His-tagged recombinant poly-Ub chains as bait. These chains were mixed with lung tissue lysates and protein complexes were isolated with Ni-NTA beads. Sample elutions were subjected to mass spectrometry (LC-MSMS) analysis.
2022-02-28 | PXD031365 | Pride
Project description:The IL-13 is a central mediator of allergic asthma. This project investigates the mechanisms by which IL-13 elicits the symptoms of asthma.
2007-09-29 | E-GEOD-1301 | biostudies-arrayexpress