Abstract:
:Allergic inflammation has crucial roles in allergic diseases such as asthma. It is therefore important to understand why and how the immune system responds to allergens. Here we found that full-length interleukin 33 (IL-33FL), an alarmin cytokine with critical roles in type 2 immunity and asthma, functioned as a protease sensor that detected proteolytic activities associated with various environmental allergens across four kingdoms, including fungi, house dust mites, bacteria and pollens. When exposed to allergen proteases, IL-33FL was rapidly cleaved in its central 'sensor' domain, which led to activation of the production of type 2 cytokines in group 2 innate lymphoid cells. Preventing cleavage of IL-33FL reduced allergic airway inflammation. Our findings reveal a molecular mechanism for the rapid induction of allergic type 2 inflammation following allergen exposure, with important implications for allergic diseases.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Cayrol C,Duval A,Schmitt P,Roga S,Camus M,Stella A,Burlet-Schiltz O,Gonzalez-de-Peredo A,Girard JPdoi
10.1038/s41590-018-0067-5subject
Has Abstractpub_date
2018-04-01 00:00:00pages
375-385issue
4eissn
1529-2908issn
1529-2916pii
10.1038/s41590-018-0067-5journal_volume
19pub_type
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