The USP7-STAT3-granzyme-Par-1 axis regulates allergic inflammation by promoting differentiation of IL-5-producing Th2 cells
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE229875 | GEO | 2023/11/13
REPOSITORIES: GEO
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Project description:The USP7-STAT3-granzyme-Par-1 axis regulates allergic inflammation by promoting differentiation of IL-5-producing Th2 cells
| PRJNA956511 | ENA
Project description:Defective interleukin-6 (IL-6) signaling has been associated with Th2 bias and elevated IgE. However, the underlying mechanism by which IL-6 may prevent the development of Th2-driven diseases remains unknown. Using a model of house-dust-mite (HDM)-induced Th2 differentiation and allergic airway inflammation, we show here that IL-6 signaling in allergen-specific T cells was required to prevent Th2 development and subsequent IgE response and allergic inflammation. Th2 cell lineage commitment required strong sustained IL-2 signaling. Importantly, we found that IL-6 turned off IL-2 signaling during early T cell activation and thus inhibited Th2 cell priming. Mechanistically, we found that IL-6-driven inhibition of IL-2 signaling in responding T cells was mediated by upregulation of suppressor of cytokine signaling 3 (SOCS3). Therapeutically, this mechanism can be mimicked by JAK1 inhibition. Collectively, our results identify an unrecognized mechanism that prevents the development of unwanted Th2 cell responses and associated diseases and outline potential preventive interventions.
2023-04-07 | GSE212158 | GEO
Project description:Pathogenesis of allergic diseases including asthma is strongly associated with robust responses of allergen-specific Th2 cells, which produce high levels of IL-4, IL-5, IL-9, and IL-13. Despite evidence for pathogenic Th2 cells in the induction and propagation of allergic disorders, signals required for differentiation of such cells remain largely unknown. Thymic stromal lymphopoietin (TSLP) is a cytokine that is expressed upon epithelial injury, dysfunction or infection and is strongly implicated in the pathogenesis of atopic dermatitis (AD) and asthma. Although indirect regulation of Th2 differentiation via TSLP-stimulated dendritic cells well known, direct effects of TSLP on Th2 differentiation in vivo have not been rigorously analyzed. We show that TSLP may initiate Th2 response independent on IL-4 signal and increases sensitivity of CD4 cells to IL-4 stimulation inducing more robust expression of IL-4, IL-5, and IL-13 by human and mouse CD4 cells. This more potent effector state appears to be stably programmed in memory Th2 cells. As part of molecular mechanism, we demonstrate that TSLP and IL-4 signals induce distinctive genome wide alterations in activating histone modification (H3K27Ac, H3K36Me3, and H3K4Me3). We propose that TSLP acts in coordination with IL-4 to generate a more potent Th2 state that could underlie persistence and propagation of allergic disorders.
2017-04-01 | GSE81384 | GEO
Project description:Granzymes are a family of structurally related serine proteases involved in immunity. To date four out of five human granzymes have been assigned orthologues in mice; however for granzyme H, no clear murine orthologue has been suggested and its role in cytotoxicity remains controversial. In this study, we demonstrate that granzyme H is an inefficient cytotoxin. Besides analyzing the substrate specificity profile of granzyme H by means of substrate phage display, we assessed human granzyme H and mouse granzyme C cleavage susceptibility on a proteome-wide level. The extended specificity profiles of granzyme C and granzyme H (i.e. beyond P4-P4') match those previously observed for granzyme B. We demonstrate conservation of these extended specificity profiles among various granzymes since granzyme B cleavage susceptibility of an otherwise granzyme H/C specific cleavage site can be conferred simply by altering the P1-residue to aspartate, the preferred P1-residue of granzyme B. Our results thus indicate a conserved, but hitherto generally underappreciated specificity-determining role of extended protease-substrate contacts in steering cleavage susceptibility. Bio-IT: The spectra were searched with Mascot Daemon 2.2. The following search parameters were used. Peptide mass tolerance was set at 0.2 Da and peptide fragment mass tolerance at 0.1 Da; with the ESI-QUAD-TOF as selected instrument for peptide fragmentation rules for the Q-TOF Premier data. Endoproteinase semiArg-C/P (i.e., no restriction towards arginine-proline cleavage) was set as enzyme allowing one missed cleavage. Variable modifications were pyroglutamate formation of N-terminal glutamine, pyrocarbamidomethyl formation of N-terminal alkylated cysteine, deamidation of asparagine, acetylation or tri-deuteroacetylation of the alpha-N-terminus. Fixed modifications were methionine oxidation (sulfoxide), carbamidomethyl for cysteine, tri-deuteroacetylation of lysine and for identifying heavy labelled peptides, [13C6] or [13C615N4]-arginine were additionally set as fixed modifications. The spectra and identifications were stored in ms_lims
2013-11-27 | PXD000152 | Pride
Project description:Elucidating the true physiological functions of granzymes has been challenging since the origin of the granzyme studied, the use of non-physiological granzyme concentrations and the interspecies use of granzymes, with extrapolation of all these data to orthologous granzymes has led to inconsistencies. This is highly relevant for granzymes A and K where a debate is ongoing concerning their involvement in either cytotoxic or inflammatory processes, or in both. In order to tackle such contradictions, detailed knowledge of the substrate repertoires and substrate specificities of granzymes as well as their cleavage efficiencies may add in unraveling the primary signaling pathways these granzymes are involved in. Therefore, a degradome analysis using N-terminal COFRADIC was performed to unravel the substrate repertoires and subsite determinants for the closely related homologous human tryptases. We furthermore also profiled the uncharacterized mouse granzyme K in a comparative analysis with its human ortholog. Despite the subtle differences observed in the primary specificity profiles of these granzymes, for each granzyme distinguishing substrate subsite features could be elucidated.
2015-09-30 | PXD000570 | Pride
Project description:Memory helper T cells provide long-lasting host defeMemory helper T cells provide long-lasting host defense against microbial pathogens, while distinct subpopulations of memory T cells drive chronic inflammatory diseases such as asthma. Asthma is a chronic allergic inflammatory disease with airway remodeling including fibrotic changes. The immunological mechanisms that induce airway fibrotic changes in allergic inflammation remain unknown. We found that Interleukin-33 (IL-33) enhanced Amphiregulin production by the IL-33 receptor, ST2hi memory T helper-2 (Th2) cells. Amphiregulin-epidermal growth factor receptor (EGFR)-mediated signaling directly reprogramed eosinophils to an inflammatory state with enhanced production of Osteopontin, a key profibrotic immunomodulatory protein. IL-5-producing memory Th2 cells and Amphiregulin-producing memory Th2 cells appeared to cooperate to establish lung fibrosis. The analysis of polyps from patients with eosinophilic chronic rhinosinusitis revealed fibrosis with accumulation of Amphiregulin-producing CRTH2hiCD161hiCD45RO+CD4+ Th2 cells and Osteopontin-producing eosinophils. Thus, the IL-33-Amphiregulin-Osteopontin axis directs fibrotic responses in eosinophilic airway inflammation and is a potential target for the treatment of fibrosis induced by chronic allergic disorders. against microbial pathogens, while distinct subpopulations of memory T cells drive chronic inflammatory diseases such as asthma. Asthma is a chronic allergic inflammatory disease with airway remodeling including fibrotic changes. The immunological mechanisms that induce airway fibrotic changes in allergic inflammation remain unknown. We found that Interleukin-33 (IL-33) enhanced Amphiregulin production by the IL-33 receptor, ST2 hi memory T helper-2 (Th2) cells. Amphiregulin-epidermal growth factor receptor (EGFR)-mediated signaling directly reprogramed eosinophils to an inflammatory state with enhanced production of Osteopontin, a key profibrotic immunomodulatory protein. IL-5-producing memory Th2 cells and Amphiregulin-producing memory Th2 cells appeared to cooperate to establish lung fibrosis. The analysis of polyps from patients with eosinophilic chronic rhinosinusitis revealed fibrosis with accumulation of Amphiregulin-producing CRTH2hiCD161hiCD45RO+CD4+ Th2 cells and Osteopontin-producing eosinophils. Thus, the IL-33-Amphiregulin-Osteopontin axis directs fibrotic responses in eosinophilic airway inflammation and is a potential target for the treatment of fibrosis induced by chronic allergic disorders.
2018-08-21 | GSE114921 | GEO
Project description:IL-5 is a key cytokine that plays an important role in the development of pathological conditions in chronic allergic inflammation. Identification of a strategy to inhibit IL-5 production is important for establishment of new therapies for allergic inflammation. We found that SH-2251, a novel thioamide-related compound, selectively inhibits the differentiation of IL-5-producing Th2 cells. SH-2251 inhibited the formation of the active histone modifications (H3K4me3, H3K9ac, H3K27ac) at the Il5 gene locus during Th2 cell differentiation. The recruitment of RNA polymerase II and the induction of Th2 cell-specific intergenic transcription between the Rad50 and Il5 gene locus was also inhibited. Furthermore, Th2 cell-driven airway inflammation in mice was suppressed by oral administration of SH-2251. We identified Gfi1 as a downstream target molecule of SH-2251 treatment. The expression of Gfi1 was dramatically decreased in SH-2251-treated Th2 cells. SH-2251-mediated inhibition of the IL-5-producing Th2 cell generation was restored by transduction of Gfi1. Thus, our study unearths SH-2251 as a novel therapeutic candidate for allergic inflammation that selectively inhibits IL-5 production. Gene expression in SH-2251-treated and untreated Th2 cells
2013-04-30 | E-GEOD-42131 | biostudies-arrayexpress
Project description:Polyfunctional Th2 cells play a crucial role in triggering diverse pathogenic responses in allergic diseases by producing multiple cytokines. However, the precise mechanism underlying their polyfunctionality remains elusive. In this study, we elucidate the pivotal role of Nrf2 in polyfunctional Th2 cells during allergic asthma. We found that an increase in reactive oxygen species (ROS) in immune cells infiltrating the lungs is necessary for the development of eosinophilic asthma. Deletion of the ROS sensor Nrf2 specifically in T cells, but not in dendritic cells, significantly abolished eosinophilia and polyfunctional Th2 cells in the airway. Mechanistically, Nrf2 intrinsic to T cells is essential for inducing optimal oxidative phosphorylation and glycolysis capacity, thereby driving Th2 cell polyfunctionality, partially by inducing PPARγ, independently of IL-33. Treatment with an Nrf2 inhibitor leads to a substantial decrease in polyfunctional Th2 cells and subsequent eosinophilia in mice, and a reduction in the production of Th2 cytokines from peripheral blood mononuclear cells (PBMCs) in asthmatic patients. These findings highlight the critical role of Nrf2 as a spatial and temporal metabolic hub that is essential for polyfunctional Th2 cells, suggesting potential therapeutic implications for allergic diseases.
2023-08-25 | GSE241355 | GEO
Project description:Unraveling the diversity of Th2 effector cells subsets may help us to understand their pathogenic role in Type-2 associated inflammatory disorders, including allergic diseases and helminth infections. To characterize the heterogeneity and function of these effector Th2 cells, we analyzed 47 subjects’ PBMCs [23 filarial-infected (Fil+) with or without coincident HDM sensitization (Fil+HDM+ n=12; Fil+HDM-, n=11) and 24 subjects without filarial infection (Fil-) (Fil-HDM+ n=12; and Fil-HDM-, n=12) using multiparameter flow cytometry and two-level FlowSOM analysis. The frequency of 3 memory CD4+ T cell clusters, including CCR4+CCR6+CRTH2- (subset 1), CCR4+CCR6-CRTH2+ (subset 2), and CCR6+CCR4+CRTH2+ (subset 3) were markedly enriched among Fil+ subjects. The functional characterization indicated subset 2 and 3 as distinct Th2 cytokine producers, which together were responsible for the majority of IL-4, IL-5, or IL-13 produced among the Fil+ subjects. These subsets were sorted and analyzed by multiomic single cell RNA profiling. Indeed, both subset 2 and subset 3 presented features of pathogenic Th2 effector cells based on their single cell molecular signature, including downregulation of cd27 and high expression levels of itga4, il-17rb, hpgds, klrb1, ptgdr2, il-9r, il-4, il5 and il-13 genes when compared with conventional Th2 cells from healthy controls. When the Fil+ subjects were divided based on allergic status, the Fil+HDM+ subjects had an expansion of both subset 2 (3.19% vs 1.28%, p=0.001) and subset 3 (0.39% vs 0.15%, p=0.002) Th2 cells when compared with Fil+HDM-. Gene expression analysis further demonstrated that concomitant HDM sensitization in the presence of filarial infection reshaped the molecular program of these pathogenic effector Th2 subsets by even further upregulating the expression of gata3, il17rb, clrf2, and klrb1. Notably, Fil+HDM+ patients’ cells showed higher responsiveness to filarial or HDM antigenic stimulation, producing even higher levels of IL-4, IL-5 and IL-13 when compared with Fil+HDM- patients. This distinct molecular and functional program of Th2 effector cells subsets sheds new light on the Th2 cell plasticity and their contribution to immune regulation in helminth infection and allergic diseases.
2024-05-29 | GSE240865 | GEO
Project description:Background: A specific subset of regulatory IL-10 producing B cells has been extensively studied in autoimmune and inflammatory pathologies. These cells are able to constrain exacerbated inflammation by inhibiting T cell mediated responses and maturation of antigen presenting cells. In allergic diseases, observations that increase of regulatory B cells is necessary for allergen tolerance suggest that development of allergic asthma would be associated with a defect in the regulatory B cells compartment. Objective: We sought to (i) characterize regulatory IL-10+ regulatory B cell subset in Balb/c mice by microarray and flow cytometry and (ii) investigate their regulatory capacity in vivo in a house dust mite model of allergic asthma. Results: We identified an IL-10 producing B cells subset able to control T cell proliferation in vitro in both control and asthmatic mice. This subset is decreased in allergic mice. IL-10+ Breg cells express high levels of CD9 and upregulate CD70 and CD73 after activation. Expression of CD9 allows identifying more than 50% of Bregs. Interestingly CD9+ B cells inhibit TH2-TH17 allergic airway inflammation in vivo after adoptive transfer in an IL-10 dependent manner. Conclusions: Herein, we demonstrate that induction of allergic asthma dampens the generation of Bregs contributing to exacerbated airway inflammation. We identified a distinct CD9+ Breg-cell population decreased in lung of HDM mice and able to control asthma and allergic airway inflammation by producing IL-10 after adoptive transfer. This study points B cells as an interesting therapeutic target in allergic asthma. IL-10+ B cells (n=3) and 3 IL-10- B cells (n=3) in control mice + IL-10+ B cells (n=3) and 3 IL-10- B cells (n=3) from asthmatic allergic (HDM) mice
2015-03-01 | E-GEOD-57772 | biostudies-arrayexpress