Abstract
Conventional T cells have historically been linked to exacerbating allergy. By efficiently generating primarily TH 2 cells, allergens skew the immune response to produce IL-4, IL-13, and IgE. Previously, CD1a-responsive T cells were shown to functionally respond to bee and wasp venom allergens. In this issue of the European Journal of Immunology, Subramaniam et al. [Eur. J. Immunol. 2016. 46: 242-252] show that more functionally active CD1a-restricted cells are present in bee venom-allergic patients than in healthy patients. Additionally, the authors show that these cells are not as frequently found in individuals receiving venom immunotherapy. Consequently, this study implicates CD1a-reactive cells as the primary responders to venom allergy, which considerably regulate the downstream immune response.
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