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Transplacental Innate Immune Training via Maternal Microbial Exposure: Role of XBP1-ERN1 Axis in Dendritic Cell Precursor ProgrammingWe recently reported that offspring of mice treated during pregnancy with the microbial-derived immunomodulator OM-85 manifest striking resistance to allergic airways inflammation, and localized the potential treatment target to fetal conventional dendritic cell (cDC) progenitors. Here, we profile maternal OM-85 treatment-associated transcriptomic signatures in fetal bone marrow, and identify a series of immunometabolic pathways which provide essential metabolites for accelerated myelopoiesis.
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Maternal diet modulates the infant microbiome and intestinal Flt3L necessary for dendritic cell development and immunity to respiratory infectionPoor maternal diet during pregnancy is a risk factor for severe lower respiratory infections in the offspring, but the underlying mechanisms remain elusive. Here, we demonstrate that in mice a maternal low-fiber diet led to enhanced LRI severity in infants because of delayed plasmacytoid dendritic cell recruitment and perturbation of regulatory T cell expansion in the lungs.
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Protection against neonatal respiratory viral infection via maternal treatment during pregnancy with the benign immune training agent OM-85Incomplete maturation of immune regulatory functions at birth is antecedent to the heightened risk for severe respiratory infections during infancy. Our forerunner animal model studies demonstrated that maternal treatment with the microbial-derived immune training agent OM-85 during pregnancy promotes accelerated postnatal maturation of mechanisms that regulate inflammatory processes in the offspring airways.
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Innate Immune Training for Prevention of Recurrent Wheeze in Early ChildhoodPat Deborah Holt Strickland PhD, DSc, FRCPath, FRCPI, FAA PhD Emeritus Honorary Researcher Head, Pregnancy and Early Life Immunology Patrick.Holt@
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Genome-wide association and HLA fine-mapping studies identify risk loci and genetic pathways underlying allergic rhinitisGWAS analyses of allergic sensitization against inhalant allergens and nonallergic rhinitis suggested shared genetic mechanisms across rhinitis-related traits
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Quantification of Serum Ovalbumin-specific Immunoglobulin E Titre via in vivo Passive Cutaneous Anaphylaxis AssayWe describe herein a highly reproducible in vivo passive cutaneous anaphylaxis assay using Sprague Dawley rats for the quantification of ovalbumin-specific IgE
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A novel role for interleukin-1 receptor signaling in the developmental regulation of immune responses to endotoxinSuggests that IL-1R1 expression provides an additional level of Myd88-dependent signaling during this period of heighted susceptibility to infection.
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Virus infection and allergy in the development of asthma: What is the connection?Information is accumulating which implicates airway inflammation resulting from respiratory viral infections, acting against a background of atopy.
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Neonatal antigen-presenting cells are functionally more quiescent in children born under traditional compared with modern environmental conditionsOne explanation for the high burden of allergic and autoimmune diseases in industrialized countries is inappropriate immune development under modern...
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T-cell activation genes differentially expressed at birth in CD4+ T-cells from children who develop IgE food allergyTo show underlying mechanisms, we examined differences in T-cell gene expression in samples at birth and at 1 year in children with and without IgE allergy.