Interrupting reactivation of immunological memory reprograms allergy and averts anaphylaxis
Bruton, K.; Spill, P.; Vohra, S.; Baribeau, O.; Manzoor, S.; Gadkar, S.; Davidson, M.; Walker, T. D.; Ellenbogen, Y.; Florescu, A.; Wen, J.; Chu, D. K.; Waserman, S.; Jimenez-Saiz, R.; Epelman, S.; Robbins, C.; Jordana, M.
Show abstract
IgE production against innocuous antigens can lead to life-threatening reactions such as anaphylaxis. While IgE levels drastically decline with strict allergen avoidance, the ability to regenerate IgE can persist for a lifetime, as is the case for peanut allergy. The mechanism by which IgE regenerates remains unresolved. A novel culture system and application of single-cell RNA-sequencing, elucidated the transcriptomic signature of human peanut-reactive B and T cells and revealed IL-4/IL-13 as a signaling pathway critical for the IgE recall response. Indeed, interruption of this pathway not only prevented IgE production and anaphylaxis, but also reprogrammed the pathogenic response against peanut. This investigation advances our understanding of the mechanism that regenerates IgE in food allergy and spotlights IL-4/IL-13 blockade as a therapeutic with disease-transforming potential. One Sentence SummarySingle-cell transcriptomics of allergic memory responses reveals how to teach the immune system to forget.
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