Allergic (Th2high immunophenotype) asthmatics have a heightened susceptibility to common respiratory viral infections such as human rhinovirus. Evidence suggests that the innate interferon response is deficient in asthmatic/atopic individuals, whilst other studies show no differences in antiviral response pathways. Unsensitized and OVA-sensitized/challenged Th2high (BN rats) and Th2low immunophenotype (PVG rats) animals were inoculated intranasally with attenuated mengovirus (vMC0). Sensitized animals were exposed/unexposed during the acute viral response phase. Cellular and transcriptomic profiling was performed on bronchoalveolar lavage cells. In unsensitized PVG rats, vMC0 elicits a prototypical antiviral response (neutrophilic airways inflammation, upregulation of Th1/type I interferon-related pathways). In contrast, response to infection in the Th2high BN rats was associated with a radically altered intrinsic host response to respiratory viral infection, characterized by macrophage influx/Th2-associated pathways. In sensitized animals, response to virus infection alone was not altered compared to unsensitized animals. However, allergen exposure of sensitized animals during viral infection unleashes a notably exaggerated airways inflammatory response profile orders of magnitude higher in BN versus PVG rats despite similar viral loads. The coexposure responses in the Th2high BN incorporated type I interferon/Th1, alternative macrophage activation/Th2 and Th17 signatures. Similar factors may underlie the hyper-susceptibility to infection-associated airways inflammation characteristic of the human Th2high immunophenotype.
Atopy-Dependent and Independent Immune Responses in the Heightened Severity of Atopics to Respiratory Viral Infections: Rat Model Studies.
Sex, Specimen part, Treatment
View SamplesPBMC from house dust mite (HDM) sensitized atopics with or without asthma (or nonallergic controls) were cultured in the presence or absence of HDM extract for 24 hours.
Differential gene network analysis for the identification of asthma-associated therapeutic targets in allergen-specific T-helper memory responses.
Specimen part, Disease stage, Subject
View SamplesPBMC from house dust mite (HDM) sensitized atopics were cultured in the presence or absence of HDM extract for 24 hours.
Distinguishing benign from pathologic TH2 immunity in atopic children.
No sample metadata fields
View SamplesThe aim of this study was to employ a systems-level analysis to elucidate gene expression networks operating in the CD4 T-cell responses which underpin human atopic disease.
A network modeling approach to analysis of the Th2 memory responses underlying human atopic disease.
Time
View SamplesGene expression was profiled in peripheral blood samples collected over three time points from patients during acute anaphylaxis and from healthy controls.
Genomic responses during acute human anaphylaxis are characterized by upregulation of innate inflammatory gene networks.
Time
View SamplesIn utero exposure to arsenic via drinking water increases the risk of lower respiratory tract infections during infancy and mortality from bronchiectasis in adulthood.
In utero exposure to arsenic alters lung development and genes related to immune and mucociliary function in mice.
Sex, Age, Specimen part, Treatment
View SamplesGlobal patterns of gene expression was profiled in nasal lavage samples obtained from asthmatic children during an acute Picornavirus-induced exacerbation and 7-14 days later.
No associated publication
Specimen part
View SamplesBalb/c mice were inoculated subcutaneously with AB1-HA cells on both flanks on day 0. The mice were then treated with anti-CTLA-4 on day 5 or 6.
Network analysis of immunotherapy-induced regressing tumours identifies novel synergistic drug combinations.
Specimen part
View SamplesMedulloblastoma is the most common form of malignant paediatric brain tumour and is the leading cause of childhood cancer related mortality. The four molecular subgroups of medulloblastoma that have been identified WNT, SHH, Group 3 and Group 4 - have molecular and topographical characteristics suggestive of different cells of origin. Definitive identification of the cell(s) of origin of the medulloblastoma subgroups, particularly the poorer prognosis Group 3 and Group 4 medulloblastoma, is critical to understand the pathogenesis of the disease, and ultimately for the development of more effective treatment options.
Gene expression analyses of the spatio-temporal relationships of human medulloblastoma subgroups during early human neurogenesis.
Sex, Age
View SamplesAsthma exacerbations are associated with subsequent deficits in lung function.
Decreased activation of inflammatory networks during acute asthma exacerbations is associated with chronic airflow obstruction.
No sample metadata fields
View Samples