Foxp3+ regulatory T cells impede the priming of protective CD8+ T cells.

Foxp3+ regulatory T cells impede the priming of protective CD8+ T cells.
复制标题

DOI:
10.4049/jimmunol.1100374
复制
发表时间:
2011-09-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Way SS
Way SS
中科院分区:
其他
文献类型:
--
作者:
Ertelt JM;Rowe JH;Mysz MA;Singh C;Roychowdhury M;Aguilera MN;Way SS

文献摘要

参考文献

被引文献

相似文献

T细胞激活是由不完全定义的相反刺激和抑制信号控制的,它们共同维持最佳宿主防御感染和外周耐受之间的平衡。在此,我们探讨了Foxp3+调节性T细胞(Treg)抑制对非感染和感染条件下启动抗原特异性T细胞活化的影响。我们发现Foxp3+ Tregs的短暂消融释放了肽刺激的CD8+ T细胞的强大扩张和激活,这些细胞以抗原特异性的方式提供抵抗单核细胞增生李斯特菌(Lm)感染的保护。相比之下,treg消融对重组Lm感染引发的CD8+ T细胞应答无显著影响。同样,非重组Lm与肽一起施用刺激CD8+ T细胞的扩增和激活,与treg消融引发的反应相似。有趣的是,Lm的这些佐剂特性不需要响应感染而产生的IL-12对CD8+ T细胞的刺激,而是与Foxp3+ Treg抑制效力的急剧降低有关。因此,Foxp3+ Tregs施加了关键的屏障,当在感染期间自然克服或人工消融时,可以启动保护性抗原特异性CD8+ T细胞。
T cell activation is controlled by incompletely defined opposing stimulation and suppression signals that together sustain the balance between optimal host defense against infection and peripheral tolerance. Herein, we explored the impacts of Foxp3+ regulatory T cell (Treg) suppression in priming antigen-specific T cell activation under non-infection and infection conditions. We find the transient ablation of Foxp3+ Tregs unleashes the robust expansion and activation of peptide stimulated CD8+ T cells that provide protection against Listeria monocytogenes (Lm) infection in an antigen-specific fashion. By contrast, Treg-ablation had non-significant impacts on the CD8+ T cell response primed by infection with recombinant Lm. Similarly, non-recombinant Lm administered with peptide stimulated the expansion and activation of CD8+ T cells that paralleled the response primed by Treg-ablation. Interestingly, these adjuvant properties of Lm did not require CD8+ T cell stimulation by IL-12 produced in response to infection, but instead were associated with sharp reductions in Foxp3+ Treg suppressive potency. Therefore, Foxp3+ Tregs impose critical barriers that when overcome naturally during infection or artificially with ablation allows the priming of protective antigen-specific CD8+ T cells.
DOI: 10.1084/jem.20021910
发表时间: 2003-05-05
期刊: The Journal of experimental medicine
影响因子: --
作者:
Curtsinger JM;Lins DC;Mescher MF
通讯作者: Mescher MF
DOI: 10.1016/j.immuni.2005.01.016
发表时间: 2005-03-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Fontenot, JD;Rasmussen, JP;Rudensky, AY
通讯作者: Rudensky, AY
DOI: 10.1016/j.coi.2010.02.013
发表时间: 2010-06
影响因子: 7
作者:
Curtsinger JM;Mescher MF
通讯作者: Mescher MF
DOI: 10.1038/nmeth762
发表时间: 2005-06-01
期刊: NATURE METHODS
影响因子: 48
作者:
Buch, T;Heppner, FL;Waisman, A
通讯作者: Waisman, A
DOI: 10.1126/science.1183021
发表时间: 2010-01-15
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Iwasaki A;Medzhitov R
通讯作者: Medzhitov R