Alveolar macrophage gene expression in a mouse model of MAS
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA627190 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Macrophage activation syndrome (MAS) is a life-threatening complication of systemic juvenile idiopathic arthritis (SJIA), and increasingly reported in association with severe lung disease (SJIA-LD) of unknown etiology. This study mechanistically defines the novel observation of pulmonary inflammation in the TLR9 mouse model of MAS that recapitulate key features of SJIA-LD, including IFNg activation. In acute MAS, lungs exhibit a mild but diffuse lymphocyte-predominant perivascular, interstitial inflammation with elevated IFNg, IFN-induced chemokines, and alveolar macrophage (AMf) expression of IFNg-induced genes. However, MAS resolution demonstrated AMf expansion and increased interstitial inflammation. AMf microarrays confirmed IFNg-induced proinflammatory polarization during acute MAS, which switches towards anti-inflammatory phenotype during MAS resolution. Interestingly, recurrent MAS increased alveolar inflammation, and reset polarization towards a pro-inflammatory state. Furthermore, in mice bearing macrophages insensitive to IFNg, both systemic feature of MAS and pulmonary inflammation were markedly attenuated. These findings demonstrate experimental MAS induces IFNg-driven pulmonary inflammation, and define this system for further study of and treatment validation in SJIA-LD. We used microarrays to study whole transcriptome analysis of alveolar macrophages in the TLR9 mouse model of MAS during both acute MAS and MAS resolution.
2021-07-27 | GSE149034 | GEO
Project description:Macrophage activation syndrome (MAS) is a life-threatening cytokine storm syndrome complicating systemic juvenile idiopathic arthritis (SJIA) and driven by IFN-gamma. SJIA and MAS are also associated with an unexplained emerging inflammatory lung disease (SJIA-LD), with our recent work supporting pulmonary activation of IFN-gamma pathways as a pathologic link between SJIA-LD and MAS. Our objective was to mechanistically define the novel observation of pulmonary inflammation in the TLR9 mouse model of MAS. In acute MAS, lungs exhibit mild but diffuse CD4-predominant, perivascular interstitial inflammation with elevated IFN-gamma, IFN-induced chemokines, and alveolar macrophage expression of IFN-gamma-induced genes. Single-cell RNA-sequencing confirmed IFN-driven transcriptional changes across immune and parenchymal lung cell types. Resolution of MAS was associated with increased alveolar macrophage and interstitial lymphocytic infiltration. alveolar macrophage microarrays confirmed IFN-gamma-induced proinflammatory polarization during acute MAS, which switches towards an anti-inflammatory phenotype during MAS resolution. Interestingly, recurrent MAS led to increased alveolar inflammation and lung injury, and reset alveolar macrophagepolarization towards a proinflammatory state. Furthermore, in mice bearing macrophages insensitive to IFN-gamma, both systemic feature of MAS and pulmonary inflammation were attenuated. These findings demonstrate that experimental MAS induces IFN-gamma-driven pulmonary inflammation replicating key features of SJIA-LD, and provides a model system for testing novel treatments directed towards SJIA-LD.
2021-09-12 | GSE169325 | GEO
Project description:GM-CSF receptor-β deficient (Csf2rbâ/â or KO) mice develop a lung disease identical to hereditary pulmonary alveolar proteinosis (hPAP) in humans with recessive CSF2RA or CSF2RB mutations that impair GM-CSF receptor function. We performed pulmonary macrophage transplantation (PMT) of bone marrow derived macrophages (BMDMs) without myeloablation in Csf2rbâ/âmice. BMDMs were administered by endotracheal instillation into 2 month-old Csf2rbâ/â mice. Results demonstrated that PMT therapeutic of hPAP in Csf2rbâ/â mice was highly efficacious and durable. Alveolar macrophages were isolated by bronchoalveolar lavage one year after administration subjected to microarray analysis to determine the effects of PMT therapy on the global gene expression profile. Total mRNA was isolated from alveolar macrophages PMT-treated Csf2rbâ/âmice (PMT) and from age-matched, untreated KO mice (KO) and wild-type (C57Bl/6) mice (WT). Total mRNA was evaluated using Affymetrix microarrays (Mouse Gene 1.0 ST Array) to compare the gene expression profiles among the three groups (3 mice/group).
2014-10-01 | E-GEOD-60528 | biostudies-arrayexpress
Project description:Bacterial lung infections are associated with strong infiltration of CD11b+ myeloid cells, which limit life-threatening disease, but also severely damage lung tissue. In a murine lung infection model with Streptococcus pneumoniae, we found intrinsic upregulation of CD11b on resident alveolar macrophages. Such CD11b expression was associated with transcriptomic and proteomic adaptations by alveolar macrophages, leading to the identification of specific molecules and pathways that depended on CD11b. In the absence of CD11b, the antimicrobial defense of alveolar macrophages was strongly reduced, and the production of neutrophil-recruiting chemokines was more pronounced. Moreover, CD11b expression limited the infection and prevented excessive alveolar damage. In conclusion, our study provides detailed molecular insights into the alveolar macrophage-specific immune response to Streptococcus pneumoniae lung infection and reveals profound CD11b-dependent alterations that are critical for effective antimicrobial immunity, neutrophil recruitment, and prevention of alveolar damage.
2023-10-08 | PXD035269 | Pride
Project description:comparison of Alveolar macrophge gene expression in wild type and PIKfyve ko We identifed gene that important for alveolar macrophage development
2017-03-01 | GSE93849 | GEO
Project description:Cytomegalovirus subverts macrophage identity [Alveolar macrophages]
| PRJNA668753 | ENA
Project description:Although both the Mas knockout and the Mas agonist affect roughly the expected types of genes (cytoskeletal, inflammatory, some metabolic), these data imply that (a) the agonist is under some circumstances an antagonist or partial agonist, and that (b) there is a redundant receptor which regulates nearly the same genes, present even with the Mas knockout.
2025-04-23 | GSE155124 | GEO
Project description:Th2, Th1 and Th17 biased sensitization against ovalbumin was achieved by immunization with Complete Freunds Adjuvant as opposed to alum-promoted Th2 biased sensitization. Bronchial inflammation was elicited by ovalbumin inhalation. T-cell, granulocyte and inflammatory mediator profiles in BAL and lungs were determined along with alveolar macrophage transcriptome profiling.
2010-06-30 | E-MEXP-2500 | biostudies-arrayexpress
Project description:In order to dtermine how well a mouse genetic model of alveolar soft part sarcoma (ASPS) mimics the human disease, five human ASPS tumor samples and three normal skeletal muscle samples were profiled by RNAseq and compared to samples from five mouse tumors induced by expression of ASPSCR1-TFE3 and three normal mouse skeletal muscle samples, also profiled by RNAseq. The reference was really comparing 5 human ASPS tumors to 5 mouse tumors that histologically mimic ASPS, but using skeletal muscle controls (3 from each species) as a sounding board for differential expression.
2014-11-26 | E-GEOD-54729 | biostudies-arrayexpress