Adenosine generation catalyzed by CD39 and CD73 expressed on regulatory T cells mediates immune suppression.
Adenosine generation catalyzed by CD39 and CD73 expressed on regulatory T cells mediates immune suppression.
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DOI:
10.1084/jem.20062512
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发表时间:
2007-06-11
期刊:
影响因子:
--
通讯作者:
Robson SC
中科院分区:
文献类型:
--
作者:
Deaglio S;Dwyer KM;Gao W;Friedman D;Usheva A;Erat A;Chen JF;Enjyoji K;Linden J;Oukka M;Kuchroo VK;Strom TB;Robson SC
The study of T regulatory cells (T reg cells) has been limited by the lack of specific surface markers and an inability to define mechanisms of suppression. We show that the expression of CD39/ENTPD1 in concert with CD73/ecto-5′-nucleotidase distinguishes CD4+/CD25+/Foxp3+ T reg cells from other T cells. These ectoenzymes generate pericellular adenosine from extracellular nucleotides. The coordinated expression of CD39/CD73 on T reg cells and the adenosine A2A receptor on activated T effector cells generates immunosuppressive loops, indicating roles in the inhibitory function of T reg cells. Consequently, T reg cells from Cd39-null mice show impaired suppressive properties in vitro and fail to block allograft rejection in vivo. We conclude that CD39 and CD73 are surface markers of T reg cells that impart a specific biochemical signature characterized by adenosine generation that has functional relevance for cellular immunoregulation.
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DOI:
10.1084/jem.194.6.847
发表时间:
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期刊:
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影响因子:
--
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影响因子:
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作者:
通讯作者:
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影响因子:
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DOI:
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发表时间:
2005-01-11
影响因子:
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