IgE and non-IgE-mediated pathways in anaphylaxis.

Anaphylaxis is a severe, potentially life-threatening allergic reaction that can occur through both IgE- and non-IgE-mediated pathways. The classic IgE-mediated pathway involves allergen-specific IgE binding to FcεRI on mast cells and basophils, triggering degranulation and the release of inflammatory mediators. Non-IgE-mediated mechanisms, which are commonly associated with drug-induced reactions, at least in mice, involve the activation of the G-protein-coupled receptor (MRGPRX2), triggering mast cell degranulation in an IgE independent manner.

An interdisciplinary approach to characterize peanut-allergic patients-First data from the FOOD@ consortium.

Background: Peanut allergy is a frequent cause of food allergy and potentially life-threatening. Within this interdisciplinary research approach, we aim to unravel the complex mechanisms of peanut allergy. As a first step were applied in an exploratory manner the analysis of peanut allergic versus non-allergic controls.

Hoxb1 Regulates Distinct Signaling Pathways in Neuromesodermal and Hindbrain Progenitors to Promote Cell Survival and Specification.

Hox genes play key roles in the anterior-posterior (AP) specification of all 3 germ layers during different developmental stages. It is only partially understood how they function in widely different developmental contexts, particularly with regards to extracellular signaling, and to what extent their function can be harnessed to guide cell specification in vitro. Here, we addressed the role of Hoxb1 in 2 distinct developmental contexts; in mouse embryonic stem cells (mES)-derived neuromesodermal progenitors (NMPs) and hindbrain neural progenitors.

Mast cells instruct keratinocytes to produce thymic stromal lymphopoietin: Relevance of the tryptase/protease-activated receptor 2 axis.

Background: Thymic stromal lymphopoietin (TSLP) promotes T2 inflammation and is deeply intertwined with inflammatory dermatoses like atopic dermatitis. The mechanisms regulating TSLP are poorly defined.

Objective: We investigated whether and by what mechanisms mast cells (MCs) foster TSLP responses in the cutaneous environment.

Serological profiling reveals hsa-miR-451a as a possible biomarker of anaphylaxis.

BackgroundThere is a need to support the diagnosis of anaphylaxis by objective markers. miRNAs are promising noncoding RNA species that may serve as serological biomarkers, but their use in diagnosing anaphylaxis has not been systematically studied to our knowledge. We aimed to comprehensively investigate serum biomarker profiles (proteins, lipids, and miRNAs) to support the diagnosis of anaphylaxis.

Integrin αvβ3 and disulfide bonds play important roles in NGR-retargeted adenovirus transduction efficiency.

Aims: Adenoviruses that have CNGRCVSGCAGRC peptide inserted into fiber (AdFNGR) or hexon (AdHNGR) protein, respectively, showed increased transduction of endothelial cells. In this study we investigated if cysteines within the CNGRCVSGCAGRC sequence inserted into Ad serotype 5 Ad5 fiber or hexon protein form disulfide bond(s) and whether they play a role in retargeting potential of AdFNGR and AdHNGR.

Methods: Transduction efficiency of adenoviruses was done by counting infected cells under the microscope.

-dependent coordination of mouse cardiac progenitor cell patterning and differentiation.

Perturbation of addition of second heart field (SHF) cardiac progenitor cells to the poles of the heart tube results in congenital heart defects (CHD). The transcriptional programs and upstream regulatory events operating in different subpopulations of the SHF remain unclear. Here, we profile the transcriptome and chromatin accessibility of anterior and posterior SHF sub-populations at genome-wide levels and demonstrate that Hoxb1 negatively regulates differentiation in the posterior SHF.