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Allergen-stimulated CD4+ T cells from hen's egg allergic patients

ABSTRACT: Allergen-stimulated T cells from hen’s egg-allergic children were analyzed to identify genes that are specifically up-regulated in these cells. Keywords: disease state analysis

ORGANISM(S): Homo sapiens

PROVIDER: GSE7512 | GEO | 2007/04/18

SECONDARY ACCESSION(S): PRJNA100461

REPOSITORIES: GEO

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Transcription profiling of human Allergen-stimulated CD4+ T cells from hens egg allergic patients

Project description:Allergen-stimulated T cells from henâs egg-allergic children were analyzed to identify genes that are specifically up-regulated in these cells. Experiment Overall Design: PBMCs from three henâs egg allergic children and two non-allergic children were cultured in RPMI 1640 supplemented with 10% autologous plasma for 16 hours with or without henâs egg white allergen (allergen concentration10 mg/ml). To focus on specific T cells reacting with HEW, cells bearing CD4 antigen were isolated from cultured PBMCs using a Magnetic cell sorterï¼Miltenyi Biotec, Bergisch Gladbach, Germanyï¼after CD14 positive cell depletion. Total RNA was extracted from these CD4 positive cells with an RNeasy mini-kit (Qiagen, Valencia, CA, USA) according to the manufacturerâs instruction.

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Project description:Allergen exposure was thought to play a critical role in the etiology of AR. And allergen avoidance, the practice of avoiding exposure to allergens, has been generally advised as the management of AR. However, the effect is uncertain and the underlying mechanism is far from known. We used gene expression microarrays to identify genes differentially regulated by allergen avoidance in allergic rhinitis mouse model. Affymetrix Mouse Gene 1.0 ST arrays were used to identify the expression profiling of nasal mucosa in three groups of mice: (1) mice sensitized and challenged with saline (control group); (2) mice sensitized and challenged with ovalbumin (OVA) and sacrificed 2 hours after the last challenge (OVA group); (3) mice sensitized and challenged with OVA and sacrificed 4 weeks after the last challenge (4w-after group).

2013-11-28 | E-GEOD-52804 | biostudies-arrayexpress

Homo sapiens

Project description:Allergen-stimulated CD4+ T cells from hen's egg allergic patients

| PRJNA100461 | ENA

Effector cell signatures in peripheral blood after nasal allergen challenge: biomarkers of the allergic response

Project description:This study investigated temporal transcriptomic changes in response to nasal allergen challenge of titrated timothy grass pollen. This is an open single-center observational study conducted outside the pollen season. Twelve participants with seasonal allergic rhinitis underwent a control (diluent) challenge followed by nasal allergen challenge after an interval of 14 days. On each challenge day, nasal challenge with control or titrated timothy grass pollen (Aquagen, phleum pratense; ALK) was administered. Peripheral blood was collected before nasal challenge (baseline) and at 3, 6 and 24 hours following challenge. RNA was extracted from whole blood and CD4 cells for microarray experiment using Affymetrix Human Gene 1.0 ST arrays.

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