Thymus exosomes-like particles induce regulatory T cells.

Thymus exosomes-like particles induce regulatory T cells.
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DOI:
10.4049/jimmunol.181.8.5242
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发表时间:
2008-10-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Zhang HG
Zhang HG
中科院分区:
其他
文献类型:
--
作者:
Wang GJ;Liu Y;Qin A;Shah SV;Deng ZB;Xiang X;Cheng Z;Liu C;Wang J;Zhang L;Grizzle WE;Zhang HG

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Exosomes released from different types of cells have been proposed to contribute to intercellular communication. We report that thymic exosome-like particles (ELPs) released from cells of the thymus can induce the development of Foxp3+ regulatory T (Treg) cells in the lung and liver. Thymic ELPs also induce the conversion of thymic CD4+CD25− T cells into Tregs. Tregs induced by thymic ELPs suppress the proliferation of CD4+CD25− T cells in vitro and in vivo. We further show that neutralization of TGF-β in ELPs partially reverses thymic ELP-mediated induction of CD4+Foxp3+ T cells in the lung and liver. This study demonstrates that thymic ELPs participate in the induction of Foxp3+ Tregs. Also, TGF-β of thymic ELPs might be required for the generation of Tregs in the peripheral tissues.
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