Transcriptional heterogeneity of mast cells and basophils upon activation. [basophils]
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE96694 | GEO | 2017/03/17
SECONDARY ACCESSION(S): PRJNA379386
REPOSITORIES: GEO
Similar Datasets
Project description:We performed large-scale comparative microarrays of bone marrow -derived mast cells and basophils at rest, upon an adaptive-type action (IgE-crosslinking) or upon innate-type activation (IL-33-activation).
2017-03-17 | GSE96695 | GEO
Project description:Mast cells and basophils are developmentally related cells whose activation is a hallmark of allergy. Functionally, mast cells and basophils overlap in their ability to produce several mediators, including histamine and granule proteases, but studies have increasingly demonstrated non-redundant roles. To characterize the transcriptional heterogeneity of mast cells and basophils upon their activation, we performed large-scale comparative microarrays of murine bone marrow–derived mast cells (BMMCs) and basophils (BMBs) at rest, upon an adaptive-type activation (IgE crosslinking), or upon an innate-type activation (IL-33 stimulation). Hierarchical clustering demonstrated that BMMCs and BMBs shared specific activation-associated transcriptional signatures but differed in others, both between cell type and between activation mode. In BMMCs, IgE crosslinking upregulated 785 genes including Egr2, Ccl1, and Fxyd6, while IL-33 stimulation induced 823 genes including Ccl1, Egr2, and Il1b. Focused bioinformatics pathway analysis demonstrated that IgE activation aligned with processes such as oxidative phosphorylation, angiogenesis, and the p53 pathway. The IL-33–activated transcriptome was enriched in genes commonly altered by NF-B in response to TNF, by IL-6 via STAT3, and in response to IFN. Furthermore, BMBs activated via IgE crosslinking selectively induced immune response genes Ccl1, Il3, and Il2 compared to IL-33–stimulated BMBs. Principal-component analysis revealed key cell- and activation-specific clustering. Overall, our data demonstrate that mast cells and basophils have cell- and activation-specific transcriptional responses and suggest that context-specific gene networks and pathways may shape how the immune system responds to allergens and innate cytokines.
2017-03-17 | GSE96696 | GEO
Project description:Transcriptional heterogeneity of mast cells and basophils upon activation.
| PRJNA379382 | ENA
Project description:To investigate the mechanisms by which C/EBPa drives basophil differentiation and maintains basophil identity, we examined whether or not C/EBPa promotes basophil molecular programming and simultaneously represses mast cell molecular programming. We performed genome-wide gene expression profiling on basophils and mast cells and found that 6798 genes were shared by mast cells and basophils; 2033 genes were expressed 2-10 (log2 1-3.3)-fold higher in basophils (differentially expressed in basophils); and 413 genes were expressed greater than 10 (log2 3.3)-fold in basophils (highly expressed in basophils). On the other hand, we found 569 genes were expressed 2-10 (log2 -1 to -3.3) fold higher in mast cells and 171 genes were highly expressed in mast cells [greater than 10 fold (log2 -3.3)]. We treated purified basophils prepared from Cebpaf/f RosaYFP/creER mice and Cebpa+/+ RosaYFP/creER control mice with or without 4HT treatment for five days. Gene expression in the treated basophils was analyzed using microarray analysis. Overall, deletion of C/EBPa in basophils resulted in a reduction of mRNA expression for 248 genes and led to an increase in mRNA expression for 255 genes. The majority of the C/EBPa-regulated genes were either differentially or highly expressed in basophils or mast cells. In this study, we compared gene expression in basophils and mast cell and identified genes which specifically expressed in basophils and mast cells. By using Cebpa conditional knock out mice, we identified Cebpa regulated genes in basophils.
2013-04-01 | E-GEOD-41596 | biostudies-arrayexpress
Project description:The aim of this study was to investigate microRNA expression pattern and its functional relevance on the commitment toward mucosal differentiation and on IgE-mediated activation of mast cells. To identify microRNA genes the expression of which change during the differentiation and activation of murine primary mast cells in vitro, the putative committed progenitors (c-kit+ cells isolated on day 6 from differentiating cultures), immature mast cells (BMMC), mucosal-type mast cells (MMC), and IgE-activated mast cells were compared by Agilent microRNA array. RNA was isolated by miRNeasy (Qiagen) from: 1) c-kit+ cells, isolated from differentiating cultures (in the presence of IL3 and SCF) derived from the bone marrow using MACS column purification, 2) immature BMMCs obtained by cultivation of bone marrow cells in the presence of IL3 and SCF for 4 weeks, 3) mucosal-type mast cells by additional differentiation of immature BMMCs for 5 days by supplementation of IL9 and TGFbeta, and 4) activated mast cells by presensitization with anti-DNP IgE followed by IgE-crosslinking by DNP-antigen challenge for 2 hours. Agilent microRNA microarray was run on these experimental groups. Four biological replicates were included in every experimental group.
2011-01-01 | E-GEOD-24321 | biostudies-arrayexpress
Project description:Human umbilical cord blood derived mast cells IgE sensitized followed by crosslinking receptor at different time points Keywords: time-course
2006-08-21 | GSE1933 | GEO
Project description:The high-affinity Fc receptor for IgE, mainly present on mast cells and basophils, plays a crucial role in the development of allergic diseases. Monomeric IgE binding to receptor regulates mast cell survival, differentiation, and maturation. However, the underlying molecular mechanism remains unclear. Here we demonstrate that, prior to IgE binding, IgE receptor mostly exists as a homo-dimer on human mast cell membrane. The structure of human IgE receptor confirms the dimeric organization. Cholesterol-like molecules embedded within the transmembrane domain may stabilize the dimeric assembly. Upon IgE binding, the dimeric IgE receptor dissociates into two protomers, each binding to an IgE molecule. Importantly, this process elicits transcriptional activation of Egr1/3 and Ccl2 in rat basophils, which can be attenuated by inhibiting the IgE receptor dimer-to-monomer transition. Collectively, our study unveils the mechanism of antigen-independent, IgE-mediated receptor activation.
2024-11-30 | GSE278387 | GEO
Project description:CD34+ CD117+ cells in human peripheral blood have mast cell-forming capacity. We have identified highly committed mast cell progenitors as Lin- CD34+ CD117 intermediate/high FcεRI+ cells. To explore the gene expression profile of the highly committed mast cell progenitors, we performed whole-transcriptome microarray analyses of the cells and compared them with mature basophils.
2015-12-01 | GSE69030 | GEO
Project description:The regulation of soluble N ethylmaleimide sensitive factor attachment receptor (SNARE) mediated membrane fusion by upstream signaling events is poorly understood. Here we show that the SNARE binding protein tomosyn-1 negatively regulates type I IgE Fc receptor (FcRI) induced degranulation of mast cells. After FcRI stimulation, tomosyn-1 (also STXBP5) was phosphorylated on serine and threonine residues and dissociated from the SNARE protein syntaxin 4 (STX4), followed by association with syntaxin 3 (STX3). Protein kinase A (PKA) and protein kinase C (PKC) prevented these activities. We identified PKC as the major kinase required for tomosyn-1 threonine phosphorylation and for the regulation of the interaction with STXs. Incubation with high IgE concentrations induced tomosyn-1 expression in cultured mast cells. In basophils from allergic patients with normal total IgE serum titers tomosyn-1 expression was lower than in patients with high IgE titers who expressed tomosyn-1 to the same extent as non-allergic subjects. Our findings identified tomosyn-1 as a negative regulator of mast cell degranulation that required PKC to switch its interaction with STX partners during fusion. The IgE-mediated upregulation of tomosyn-1 in allergic patients may represent a counter-regulatory mechanism to limit disease development.
2018-07-04 | PXD010047 | Pride
Project description:Immunoglobulin (Ig) E-mediated activation of mast cells and basophils underlies allergic diseases such as asthma. Histamine-releasing factor (HRF), also known as translationally controlled tumor protein (TCTP) and fortilin, is a highly conserved protein with both intracellular and extracellular functions. Secreted HRF can stimulate histamine release and IL-4 and IL-13 production from IgE-sensitized basophils and mast cells. HRF is found in nasal, skin blister and bronchoalveolar lavage (BAL) fluids during late-phase allergic reactions (LPRs), which implicates HRF in the LPR and chronic allergic inflammation. Here we identify a subset of IgE and IgG antibodies as HRF-interacting molecules. HRF can exist as a dimer and bind to immunoglobulins (Igs) via interactions of its N-terminal and internal regions with the Fab region of Igs. Therefore, HRF together with HRF-reactive IgE can activate mast cells in vitro. The Ig-interacting HRF peptides that block HRF-Ig interactions can inhibit IgE+HRF-induced mast cell activation and in vivo cutaneous anaphylaxis and airway inflammation. Intranasally administered HRF can recruit inflammatory immune cells to the lung in naïve mice in a mast cell- and Fc receptor-dependent manner. These results strongly suggest the proinflammatory role of HRF in asthma and skin immediate hypersensitivity. A total of 6 samples were analyzed; wild type C57BL/6, FcRg KO and FceRIa KO mice were challenged with PBS (control) or mouse histamien-releasing factor
2011-12-04 | E-GEOD-34133 | biostudies-arrayexpress