Cutting edge: identification of the thymic stromal lymphopoietin-responsive dendritic cell subset critical for initiation of type 2 contact hypersensitivity.

Cutting edge: identification of the thymic stromal lymphopoietin-responsive dendritic cell subset critical for initiation of type 2 contact hypersensitivity.
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DOI:
10.4049/jimmunol.1302175
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发表时间:
2013-11-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Ziegler SF
Ziegler SF
中科院分区:
其他
文献类型:
--
作者:
Kitajima M;Ziegler SF

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The cytokine thymic stromal lymphopoietin (TSLP) has been implicated in the initiation and progression of allergic inflammation through its ability to activate dendritic cells (DCs). However, the identity of the DC subset that responds to TSLP is not known. In this study we use a CCL17 reporter strain to identify the TSLP-responsive DC subset. In vitro, TSLP induced CD11bhigh DCs to express CCL17, to increase CCR7-mediated migration activity, and to drive Th2 differentiation of naïve CD4 T cells. In vivo, following skin sensitization, we found that a subset of antigen-bearing CCL17+ CD11bhigh migratory DCs (mDCs), but not antigen-bearing CCL17− mDCs, in skin LNs were capable of driving Th2 differentiation, and were dramatically reduced in TSLPR-deficient mice. Taken together, these results demonstrate that TSLP activated a subset of CD11b+ DCs in the skin to produce CCL17, upregulate CCR7 and migrate to the draining lymph node to initiate Th2 differentiation.
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