Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Next Generation Sequencing Facilitates Quantitative Analysis of B cell Transcriptomes

ABSTRACT: Emergence of IgE antibodies that bind allergens with high affinity is highly correlated with the severity of anaphylaxis. However, the underlying molecular mechanisms by which high-affinity IgE is generated remain poorly understood. To examine function of IL-13 derived from T cells in IgE producing B cell development, we transferred IL-13 sufficient or deficient OT-2 TH2 into IgE reporter (Verigem) mice followed by immunization with NP-OVA. At 7 day post immunization, NP specific IgE producing B cells were sorted and served to single cell transcriptome analysis.

ORGANISM(S): Mus musculus

PROVIDER: GSE165539 | GEO | 2021/01/27

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Identification of a T follicular helper subset that drives anaphylactic IgE

Project description:We report a rare population of IL-13-producing Tfh cells that were present with high-affinity IgE to allergens. These “Tfh13” cells have an unusual cytokine profile (IL-13hiIL-4hiIL-5hiIL-21lo), co-express BCL6 and GATA3 and were required for production of high- but not low-affinity IgE and accordingly, allergen-induced anaphylaxis.

2019-08-06 | GSE132798 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of TFH2 cell Transcriptomes

Project description:Emergence of IgE antibodies that bind allergens with high affinity is highly correlated with the severity of anaphylaxis. However, the underlying molecular mechanisms by which high-affinity IgE is generated remain poorly understood. We discovered that IL-13-producing T follicular helper (TFH) cells, which we designated as TFH2 cells, are generated from conventional TH2 cells by antigen sensitization. TFH2 cells have a unique cytokine profile (IL-4+IL-5-IL-13+IL-21+) and co-express the TFH and TH2 master transcriptional regulators, BCL-6 and GATA3.

2019-09-26 | GSE137970 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of IgG or IgE producing B cells

2021-01-23 | GSE165301 | GEO

Induction of Interleukin-9-producing Mucosal Mast cells Promotes Susceptibility to IgE-mediated Experimental Food Allergy

Project description:Experimental IgE-mediated food allergy depends on intestinal anaphylaxis driven by interleukin (IL)-9. However, the primary cellular source of IL-9 and the mechanisms underlying the susceptibility to food-induced intestinal anaphylaxis remain unclear. Herein, we have reported the identification of multifunctional IL-9-producing mucosal mast cells (MMC9s) that can secrete prodigious amounts of IL-9 and IL-13 in response to IL-33, and mast cell protease-1 (MCPt-1) in response to antigen and IgE complex crosslinking, respectively. Repeated intragastric antigen challenge induced MMC9 development that required T cells, IL-4, and STAT6 transcription factor, but not IL-9 signals. Mice ablated of MMC9 induction failed to develop intestinal mastocytosis, which resulted in decreased food allergy symptoms that could be restored by adoptively transferred MMC9s. Finally, atopic patients that developed food allergy displayed increased intestinal expression of Il9 and MC-specific transcripts. Thus, the induction of MMC9s is a pivotal step to acquire the susceptibility to IgE-mediated food allergy.

2015-09-11 | GSE72921 | GEO

Induction of Interleukin-9-producing Mucosal Mast cells Promotes Susceptibility to IgE-mediated Experimental Food Allergy

2015-09-11 | E-GEOD-72921 | biostudies-arrayexpress

Induction of natural IgE by glucocorticoids

Project description:Allergy is one of the most prevalent chronic diseases, affecting hundreds of millions of people worldwide. In allergy, environmental allergens induce B cells to undergo class switch recombination and produce Immunoglobulin E (IgE) antibodies. IgE is a key molecule that mediates allergic responses by coating mast cell or basophil surfaces and inducing degranulation upon binding a specific allergen. IgE can also be spontaneously produced in the absence of exogenous allergens, yet the origin, regulation, and functions of such “natural” IgE still remains largely unknown. Here, we discovered that glucocorticoids, which are steroid stress hormones, enhance IgE isotype class switching in B cells both in vivo and ex vivo without antigenic challenge. Such IgE class switching is promoted by B cell-intrinsic glucocorticoid receptor signaling that reinforces CD40 signaling and synergizes with the IL-4/STAT6 pathway. In addition, we found that rare B cells in the mesenteric lymph nodes are responsible for the production of glucocorticoid-inducible IgE. Furthermore, we showed that locally produced glucocorticoids in the gut may induce natural IgE during perturbations of gut homeostasis such as dysbiosis. Notably, mice preemptively treated with glucocorticoids were protected from subsequent IgE-mediated pathogenic anaphylaxis in vivo. Together, our results suggest that glucocorticoids, classically considered to be broadly immunosuppressive, have a selective immunostimulatory role in B cells.

2022-09-09 | GSE203542 | GEO

Proinflammatory role of histamine-releasing factor in asthma and allergy

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

Gene expression by antigen activated OT-I T cells in vivo in the presence and absence of IL-2

Project description:Much is known concerning the cellular and molecular basis for CD8+ T memory immune responses. Nevertheless, conditions that selectively support memory generation have remained elusive. Here we show that an immunization regimen that delivers TCR signals through a defined antigenic peptide, inflammatory signals through LPS, and growth and differentiation signals through the IL-2R initially favors antigen-specific CD8+ T cells to rapidly and substantially develop into tissue-residing T effector-memory cells by TCR transgenic OVA-specific OT-I CD8+ T cells. Amplified CD8+ T memory development depends upon a critical frequency of antigen-specific T cells and direct responsiveness to IL-2. A homologous prime-boost immunization protocol with transiently enhanced IL-2R signaling in normal mice led to persistent polyclonal antigen-specific CD8+ T cells that supported protective immunity to Listeria monocytogenes. These results identify a general approach for amplified T memory development that may be useful to optimize vaccines aimed at generating robust cell-mediated immunity. Gene expression analysis was performed for OT-I T cells on day 3 and day 5 after activation with ovalbumin and LPS in vivo with and without treatment with IL-2 using an agonists IL-2/anti-IL-2 complexes (IL2/Jes-6.1) OT-I T cells were purified and adoptively transferred into congenic syngenic mice. 24 hours later mice were immunization with ovalbumin and LPS. 24 hr later some mice received agonist IL2/anti-IL2. 3 and 5 days after immunization, the activated OT-I T cells were purifed by FACS and total RNA was isolated for genome wide expression analysis using Affymetrix Mouse Gene ST1.0 arrays

2012-10-03 | E-GEOD-39110 | biostudies-arrayexpress

Double-Blind Randomized Placebo-Controlled Trial on Clinical and Biological Effects of Oral Corticosteroids or Doxycyclin in Patients With Nasal Polyposis

Project description:This study is a double-blinded, randomized, placebo controlled, multi-center trial in which 120 subjects with nasal polyposis (NP) will be treated during 20 days with oral corticosteroids (OCS) in decreasing doses or oral doxycyclin (ODOX) or placebo. At each visit the clinical and the biological activity will be assessed by nasal peak inspiratory flow (nPIF), symptoms, olfactory test, endoscopic evaluation of nasal polyps, peripheral eosinophil levels and markers of inflammation IL-5, IL-5 receptor alpha, ECP, TGFβ1, IgE and specific IgE in serum and nasal secretion.

| 2040498 | ecrin-mdr-crc

Integrative transcriptomic analysis in human and mouse models of anaphylaxis identifies upregulation of cell movement, migration and neuroinflammatory signalling pathway

Project description:The underlying mechanisms of IgE-mediated anaphylaxis remain poorly understood. Furthermore, it remains to be determined to what extent findings from animal/mouse models reflects the pathophysiological mechanism in human. Therefore, to better characterize the mechanisms leading to potentially lethal events, analysis of global transcriptional changes (RNA-sequencing) in peripheral blood human samples in patients with anaphylaxis presenting at the emergency department and in patients with anaphylaxis during double-blind placebo-controlled food challenges (DBPCFC) to peanut, was performed. Mouse samples with different severity of IgE-mediated food-induced anaphylaxis were also included in RNA-sequencing analyses.

2022-11-21 | GSE215184 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data