Abstract：
:The type 2 immune response evoked by intestinal nematode parasites contributes to worm expulsion and tolerance to associated tissue damage. We investigated whether this host response is affected by blocking signaling by the putative endogenous danger signal adenosine, which can be released during inflammation and host cell damage. Specific blockade of the A2B adenosine receptor (A2BAR) inhibited worm elimination and the development of innate and adaptive components of the type 2 primary and memory response. Infected mice lacking A2BAR exhibited decreased M2 macrophage and eosinophil recruitment and reduced IL-4 and IL-13 cytokine production. Additionally, shortly after infection, upregulation of the alarmin IL-33, which drives type 2 immunity, and activation of innate lymphoid type 2 (ILC2) cells was inhibited, while exogenous IL-33 restored ILC2 cell activation and type 2 cytokine expression. Thus, adenosine acts as a danger-associated molecular pattern (DAMP) that initiates helminth-induced type 2 immune responses through A2BAR.
journal_name
Cell Host Microbejournal_title
Cell host & microbeauthors
Patel N,Wu W,Mishra PK,Chen F,Millman A,Csóka B,Koscsó B,Eltzschig HK,Haskó G,Gause WCdoi
10.1016/j.chom.2014.02.001subject
Has Abstractpub_date
2014-03-12 00:00:00pages
339-50issue
3eissn
1931-3128issn
1934-6069pii
S1931-3128(14)00059-6journal_volume
15pub_type
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