A(2B) Adenosine Receptor Induces Protective Antihelminth Type 2 Immune Responses

作者：Patel Nirav; Wu Wenhui; Mishra Pankaj K; Chen Fei; Millman Ariel; Csoka Balazs; Koscso Balazs; Eltzschig Holger K; Hasko Gyoergy; Gause William C^*

来源：Cell Host & Microbe, 2014, 15(3): 339-350.

DOI：10.1016/j.chom.2014.02.001

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 A(2B) adenosine receptor (A(2B)AR) inhibited worm elimination and the development of innate and adaptive components of the type 2 primary and memory response. Infected mice lacking A(2B)AR 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 dangerassociated molecular pattern (DAMP) that initiates helminth- induced type 2 immune responses through A(2B)AR.

• 出版日期2014-3-12
• 单位rutgers