Infectious tolerance: human CD25(+) regulatory T cells convey suppressor activity to conventional CD4(+) T helper cells.
Infectious tolerance: human CD25(+) regulatory T cells convey suppressor activity to conventional CD4(+) T helper cells.
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DOI:
10.1084/jem.20020394
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发表时间:
2002-07-15
期刊:
影响因子:
--
通讯作者:
Enk AH
中科院分区:
文献类型:
--
作者:
Jonuleit H;Schmitt E;Kakirman H;Stassen M;Knop J;Enk AH
Regulatory CD4+CD25+ T cells (Treg) are mandatory for maintaining immunologic self-tolerance. We demonstrate that the cell-cell contact–mediated suppression of conventional CD4+ T cells by human CD25+ Treg cells is fixation resistant, independent from membrane-bound TGF-β but requires activation and protein synthesis of CD25+ Treg cells. Coactivation of CD25+ Treg cells with Treg cell–depleted CD4+ T cells results in anergized CD4+ T cells that in turn inhibit the activation of conventional, freshly isolated CD4+ T helper (Th) cells. This infectious suppressive activity, transferred from CD25+ Treg cells via cell contact, is cell contact–independent and partially mediated by soluble transforming growth factor (TGF)-β. The induction of suppressive properties in conventional CD4+ Th cells represents a mechanism underlying the phenomenon of infectious tolerance. This explains previously published conflicting data on the role of TGF-β in CD25+ Treg cell–induced immunosuppression.
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DOI:
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发表时间:
2001-06-04
期刊:
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影响因子:
--
作者:
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期刊:
The Journal of experimental medicine
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--
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Jonuleit H;Schmitt E;Schuler G;Knop J;Enk AH
通讯作者:
Enk AH
影响因子:
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