The A2B adenosine receptor promotes Th17 differentiation via stimulation of dendritic cell IL-6.
The A2B adenosine receptor promotes Th17 differentiation via stimulation of dendritic cell IL-6.
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A2b腺苷受体通过刺激树突状细胞IL-6促进Th17分化。
DOI:
10.4049/jimmunol.1100117
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发表时间:
2011-06-15
期刊:
影响因子:
--
通讯作者:
Ernst PB
中科院分区:
文献类型:
--
作者:
Wilson JM;Kurtz CC;Black SG;Ross WG;Alam MS;Linden J;Ernst PB
Adenosine is an endogenous metabolite produced during hypoxia or inflammation. Previously implicated as an anti-inflammatory mediator in CD4+ T cell regulation, we report that adenosine acts via dendritic cell (DC) A2B adenosine receptor (A2BAR) to promote the development of Th17 cells. Mouse naive CD4+ T cells cocultured with DCs in the presence of adenosine or the stable adenosine mimetic 5′-(N-ethylcarboximado) adenosine resulted in the differentiation of IL-17– and IL-22–secreting cells and elevation of mRNA that encode signature Th17-associated molecules, such as IL-23R and RORγt. The observed response was similar when DCs were generated from bone marrow or isolated from small intestine lamina propria. Experiments using antagonists and cells from A2BAR−/− adenosine receptor or A2AAR−/−/A2BAR−/− mice indicated that the DC A2BAR promoted the effect. IL-6, stimulated in a cAMP-independent manner, is an important mediator in this pathway. Hence, in addition to previously noted direct effects of adenosine receptors on regulatory T cell development and function, these data indicated that adenosine also acts indirectly to modulate CD4+ T cell differentiation and suggested a mechanism for putative proinflammatory effects of A2BAR.
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