γδ T cells enhance autoimmunity by restraining regulatory T cell responses via an interleukin-23-dependent mechanism.
γδ T cells enhance autoimmunity by restraining regulatory T cell responses via an interleukin-23-dependent mechanism.
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DOI:
10.1016/j.immuni.2010.08.013
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发表时间:
2010-09-24
期刊:
影响因子:
32.4
通讯作者:
Korn T
中科院分区:
文献类型:
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作者:
Petermann F;Rothhammer V;Claussen MC;Haas JD;Blanco LR;Heink S;Prinz I;Hemmer B;Kuchroo VK;Oukka M;Korn T
Mice that lack interleukin-23 (IL-23) are resistant to T cell-mediated autoimmunity. Although IL-23 is a maturation factor for T helper 17 (Th17) cells, a subset of γδ T cells expresses the IL-23 receptor (IL-23R) constitutively. Using IL-23R reporter mice, we showed that γδ T cells were the first cells to respond to IL-23 during experimental autoimmune encephalomyelitis (EAE). Although γδ T cells produced Th17 cell-associated cytokines in response to IL-23, their major function was to prevent the development of regulatory T (Treg) cell responses. IL-23-activated γδ T cells rendered αβ effector T cells refractory to the suppressive activity of Treg cells and also prevented the conversion of conventional T cells into Foxp3+ Treg cells in vivo. Thus, IL-23, which by itself has no direct effect on Treg cells, is able to disarm Treg cell responses and promote antigen specific effector T cell responses via activating γδ T cells.
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