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Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [scRNA-Seq]

ABSTRACT: IL-23-Th17 signaling axis is responsible for neutrophilic inflammation in various barrier tissues. However, mechanistic links between IL-23 and Th17 activation remain unclear, despite of their critical contribution to chronic inflammatory diseases. Here, we discovered a novel signaling pathway linking IL-23 to Th17 activation in our neutrophil-dominant asthma (NDA) model. Through single-cell multi-omics analysis, we identified distinctive CD39+CD9+ interstitial macrophages (IMs) suppressed by IL-23. CD39+CD9+ IMs increased by IL-23p19 inhibitor suppressed NETosis, which inhibited Th17 activation. To inhibit NETosis, CD39+CD9+ IMs first attach to neutrophils in a CD9-dependent manner, and then remove ATP molecules near neutrophils in a CD39-dependent manner. Thus, our discovery of CD39+CD9+ IMs provides previously unrecognized signaling component linking IL-23 and NETosis for controlling Th17 activation/neutrophilic inflammation. We finally demonstrated the decreased number of CD39+CD9+ immune cells in patients with severe chronic rhinosinusitis and inflammatory bowel disease, suggesting CD39+CD9+ IMs as potential therapeutic targets for IL-23-Th17-mediated inflammatory diseases.

ORGANISM(S): Mus musculus

PROVIDER: GSE222456 | GEO | 2024/08/30

REPOSITORIES: GEO

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Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [bulk RNA-Seq]

Project description:IL-23-Th17 signaling axis is responsible for neutrophilic inflammation in various barrier tissues. However, mechanistic links between IL-23 and Th17 activation remain unclear, despite of their critical contribution to chronic inflammatory diseases. Here, we discovered a novel signaling pathway linking IL-23 to Th17 activation in our neutrophil-dominant asthma (NDA) model. Through single-cell multi-omics analysis, we identified distinctive CD39+CD9+ interstitial macrophages (IMs) suppressed by IL-23. CD39+CD9+ IMs increased by IL-23p19 inhibitor suppressed NETosis, which inhibited Th17 activation. To inhibit NETosis, CD39+CD9+ IMs first attach to neutrophils in a CD9-dependent manner, and then remove ATP molecules near neutrophils in a CD39-dependent manner. Thus, our discovery of CD39+CD9+ IMs provides previously unrecognized signaling component linking IL-23 and NETosis for controlling Th17 activation/neutrophilic inflammation. We finally demonstrated the decreased number of CD39+CD9+ immune cells in patients with severe chronic rhinosinusitis and inflammatory bowel disease, suggesting CD39+CD9+ IMs as potential therapeutic targets for IL-23-Th17-mediated inflammatory diseases.

2024-08-30 | GSE222459 | GEO

Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [scRNA-Seq]

Project description:Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [scRNA-Seq]

| PRJNA922146 | ENA

Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [bulk RNA-Seq]

Project description:Distinctive CD39+CD9+ lung interstitial macrophages suppress IL-23/Th17-mediated neutrophilic asthma by inhibiting NETosis [bulk RNA-Seq]

| PRJNA922158 | ENA

Mouse Th17 T cells, IL-23 stimulated

Project description:Interleukin 23 (IL-23) triggers pathogenic features in pro-inflammatory, IL-17-secreting T cells (Th17 and Tγδ17) that play a key role in the development of inflammatory diseases. However, the IL-23 signaling cascade remains largely undefined. Here we used quantitative phosphoproteomics to characterize IL-23 signaling in primary murine Th17 cells. We quantified 6,888 phosphorylation sites in Th17 cells, and found 168 phosphorylations regulated upom IL-23 stimulation. IL-23 increased the phosphorylation of the myosin regulatory light chain (RLC), an actomyosin contractibility marker, in Th17 and Tγδ cells. IL-23-induced RLC phosphorylation required JAK2 and ROCK catalytic activity, and the study of the IL-23/ROCK axis revealed an unexpected role of IL-23 in the migration of Tγδ17 and Th17 cells. Moreover, pharmacological inhibition of ROCK reduced Tγδ17 recruitment to inflamed skin upon challenge with inflammatory agent Imiquimod. This work: i) provides new insights into phosphorylation networks that control Th17 cells, ii) widely expands the current knowledge on IL-23 signaling, and iii) contributes to the increasing list of immune cells subsets characterized by global phosphoproteomic approaches.

2020-03-25 | PXD016633 | Pride

Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling

Project description:CD4+ T cells that selectively produce interleukin (IL)-17, are critical for host defense and autoimmunity1-4. Crucial for T helper17 (Th17) cells in vivo5,6, IL-23 has been thought to be incapable of driving initial differentiation. Rather, IL-6 and transforming growth factor (TGF)-β1 have been argued to be the factors responsible for initiating specification7-10. Herein, we show that Th17 differentiation occurs in the absence of TGF-β signaling. Neither IL-6 nor IL-23 alone efficiently generated Th17 cells; however, these cytokines in combination with IL-1β effectively induced IL-17 production in naïve precursors, independently of TGF-β. Epigenetic modification of the Il17a/Il17f and Rorc promoters proceeded without TGF-β1, allowing the generation of cells that co-expressed Rorγt and T-bet. T-bet+Rorγt+ Th17 cells are generated in vivo during experimental allergic encephalomyelitis (EAE), and adoptively transferred Th17 cells generated with IL-23 in the absence of TGF-β1 were more pathogenic in this experimental disease. These data suggest a new model for Th17 differentiation. Consistent with genetic data linking the IL23R with autoimmunity, our findings re-emphasize the role of IL-23 and therefore have important implications for the development of new therapies. Mouse T helper 17 cell differentiation with or without TGFB

2010-08-31 | E-GEOD-23505 | biostudies-arrayexpress

Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling: ChIPSeq

Project description:CD4+ T cells that selectively produce interleukin (IL)-17, are critical for host defense and autoimmunity. Crucial for T helper17 (Th17) cells in vivo, IL-23 has been thought to be incapable of driving initial differentiation. Rather, IL-6 and transforming growth factor (TGF)-β1 have been argued to be the factors responsible for initiating specification. Herein, we show that Th17 differentiation occurs in the absence of TGF-β signaling. Neither IL-6 nor IL-23 alone efficiently generated Th17 cells; however, these cytokines in combination with IL-1β effectively induced IL-17 production in naïve precursors, independently of TGF-β. Epigenetic modification of the Il17a/Il17f and Rorc promoters proceeded without TGF-β1, allowing the generation of cells that co-expressed Rorγt and T-bet. T-bet+Rorγt+ Th17 cells are generated in vivo during experimental allergic encephalomyelitis (EAE), and adoptively transferred Th17 cells generated with IL-23 in the absence of TGF-β1 were more pathogenic in this experimental disease. These data suggest a new model for Th17 differentiation. Consistent with genetic data linking the IL23R with autoimmunity, our findings re-emphasize the role of IL-23 and therefore have important implications for the development of new therapies. Examination of Stat3 binding and H3K4me and H3Ac in helper T cells.

2010-08-31 | E-GEOD-23681 | biostudies-arrayexpress

Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling

2010-08-31 | GSE23505 | GEO

Enhanced Pathogenicity of Th17 cells Generated in the Absence of Transforming Growth Factor-β Signaling: ChIPSeq

2010-08-31 | GSE23681 | GEO

Interleukin-23-induced transcription factor Blimp1 promotes pathogenicity of T helper 17 cells

Project description:Interleukin-23 (IL-23) is a pro-inflammatory cytokine required for the pathogenicity of T helper 17 (Th17) cells but the molecular mechanisms governing this process remain unclear. We identified the transcription factor Blimp-1 (Prdm1) as a key IL-23-induced factor that drove the inflammatory function of Th17 cells. In contrast to thymic deletion of Blimp-1, which causes T cell development defects and spontaneous autoimmunity, peripheral deletion of this transcription factor resulted in reduced Th17 activation and reduced severity of autoimmune encephalomyelitis. Furthermore, genome wide occupancy and overexpression studies in Th17 cells revealed that Blimp-1 co-localized with transcription factors RORÎ³t, STAT-3 and p300 at the Il23r, Il17a/f and Csf2 cytokine loci to enhance their expression. Blimp-1 also directly bound to and repressed cytokine loci Il2 and Bcl6. Taken together, our results demonstrate that Blimp-1 is an essential transcription factor downstream of IL-23 that acts in concert with RORÎ³t to activate the Th17 inflammatory program. Genome-wide binding analysis of Blimp1 from in vitro generated T effector and regulatory cells

2016-06-15 | E-GEOD-75724 | biostudies-arrayexpress

Induction of pathogenic Th17 cells by salt inducible kinase SGK-1 (SGK-1 KO)

Project description:Th17 cells are highly proinflammatory cells that are critical for clearing extracellular pathogens like fungal infections and for induction of multiple autoimmune diseases1. IL-23 plays a critical role in stabilizing and endowing Th17 cells with pathogenic effector functions2. Previous studies have shown that IL-23 signaling reinforces the Th17 phenotype by increasing expression of IL-23 receptor (IL-23R)3. However, the precise molecular mechanism by which IL-23 sustains the Th17 response and induces pathogenic effector functions has not been elucidated. Here, we used unbiased transcriptional profiling of developing Th17 cells to construct a model of their signaling network and identify major nodes that regulate Th17 development. We identified serum glucocorticoid kinase-1 (SGK1), as an essential node downstream of IL-23 signaling, critical for regulating IL-23R expression and for stabilizing the Th17 cell phenotype by deactivation of Foxo1, a direct repressor of IL-23R expression. A serine-threonine kinase homologous to AKT4, SGK1 has been associated with cell cycle and apoptosis, and has been shown to govern Na+ transport and homeostasis5, 6 7, 8. We here show that a modest increase in salt (NaCl) concentration induces SGK1 expression, promotes IL-23R expression and enhances Th17 cell differentiation in vitro and in vivo, ultimately accelerating the development of autoimmunity. The loss of SGK1 resulted in abrogation of Na+-mediated Th17 differentiation in an IL-23-dependent manner. These data indicate that SGK1 is a critical regulator for the induction of pathogenic Th17 cells and provides a molecular insight by which an environmental factor such as a high salt diet could trigger Th17 development and promote tissue inflammation. Th17 cells; comparing Sgk1-/- to WT

2013-03-07 | E-GEOD-43956 | biostudies-arrayexpress

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