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  • Title: Identification of α-tubulin, Der f 33, as a novel allergen from Dermatophagoides farinae.
    Author: Wang H, Lin J, Liu X, Liang Z, Yang P, Ran P, Liu Z.
    Journal: Immunobiology; 2016 Aug; 221(8):911-7. PubMed ID: 27067709.
    Abstract:
    BACKGROUND: House dust mites are an important source of indoor allergens. More than 30 allergens of Dermatophagoides farinae (D. farinae) have been identified. Yet there may be many other allergens in mites remain to be characterized. METHODS: α-Tubulin (also named Der f 33) was cloned, expressed and purified. Reaction to specific-IgE, skin prick test and a mouse asthma model were employed to determine the allergenicity of Der f 33. RESULTS: The recombinant Der f 33 reacted to the serum of patients with mite allergy. The positive rate of skin prick test (SPT) was 23.5%. In an asthma mouse model, Der f 33 induced the airway allergy-like responses. Moreover, serum specific IgE and IgG1, interleukin-4 (IL-4) from bronchoalveolar lavage fluid (BALF) and spleen cell culture supernatant were markedly increased. In addition, Der f 33 upregulated the CD80 and TNF-α levels in dendritic cells (DCs). CONCLUSIONS: Der f 33 is a novel allergen of D. farinae. It modulates the functions of DCs and induces airway allergy.
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