Cutting Edge: Responder T cells regulate human DR+ effector regulatory T cell activity via granzyme B.
Cutting Edge: Responder T cells regulate human DR+ effector regulatory T cell activity via granzyme B.
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DOI:
10.4049/jimmunol.0900845
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发表时间:
2009-10-15
期刊:
影响因子:
--
通讯作者:
Baecher-Allan C
中科院分区:
文献类型:
--
作者:
Ashley CW;Baecher-Allan C
MHC class II expression identifies an effector subset of human CD4+CD25highFoxP3high natural regulatory T cells (DR+ Tregs) that induces more rapid suppression and exhibits higher FoxP3 expression than the remaining Treg population. Although Tregs are known to be highly sensitive to apoptosis, in this study we demonstrate that this sensitivity is primarily a feature of DR+ Tregs. Granzyme B (GzmB) is strongly expressed by nonregulatory responder CD4 T cells, whereas effector DR+ Tregs express little GzmB. Strong TCR stimulation markedly increases the expression of GzmB in all dividing responder CD4 T cells and mitigates the suppression by DR+ Tregs. DR+ Treg suppressive activity reemerges if GzmB is neutralized. We show that responder cells actively kill effector Tregs by producing GzmB in response to strong TCR stimulation. Thus, the production of GzmB by strongly activated CD4 T cells represents a mechanism by which CD4 T cells resist Treg suppression.
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DOI:
10.4049/jimmunol.182.3.1469
发表时间:
2009-02-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Strauss L;Bergmann C;Whiteside TL
通讯作者:
Whiteside TL
影响因子:
4.4
作者:
Baecher-Allan, Clare;Wolf, Elizabeth;Haller, David A.
通讯作者:
Haller, David A.
影响因子:
4.4
作者:
Reardon, Colin;Wang, Arthur;McKay, Derek M.
通讯作者:
McKay, Derek M.
影响因子:
32.4
作者:
Grossman, WJ;Verbsky, JW;Ley, TJ
通讯作者:
Ley, TJ
影响因子:
4.4
作者:
Gondek, DC;Lu, LF;Noelle, RJ
通讯作者:
Noelle, RJ