The thymic medulla is required for Foxp3+ regulatory but not conventional CD4+ thymocyte development.
The thymic medulla is required for Foxp3+ regulatory but not conventional CD4+ thymocyte development.
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DOI:
10.1084/jem.20122070
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发表时间:
2013-04-08
期刊:
影响因子:
--
通讯作者:
Anderson G
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文献类型:
--
作者:
Cowan JE;Parnell SM;Nakamura K;Caamano JH;Lane PJ;Jenkinson EJ;Jenkinson WE;Anderson G
The thymic medulla and an intact mTEC compartment are needed for the development of nTreg cells and negative selection of conventional T cells but not their further maturation. A key role of the thymic medulla is to negatively select autoreactive CD4+ and CD8+ thymocytes, a process important for T cell tolerance induction. However, the involvement of the thymic medulla in other aspects of αβ T cell development, including the generation of Foxp3+ natural regulatory T cells (nTreg cells) and the continued maturation of positively selected conventional αβ T cells, is unclear. We show that newly generated conventional CD69+Qa2− CD4 single-positive thymocytes mature to the late CD69−Qa2+ stage in the absence of RelB-dependent medullary thymic epithelial cells (mTECs). Furthermore, an increasing ability to continue maturation extrathymically is observed within the CD69+CCR7−/loCCR9+ subset of conventional SP4 thymocytes, providing evidence for an independence from medullary support by the earliest stages after positive selection. In contrast, Foxp3+ nTreg cell development is medullary dependent, with mTECs fostering the generation of Foxp3−CD25+ nTreg cell precursors at the CD69+CCR7+CCR9− stage. Our results demonstrate a differential requirement for the thymic medulla in relation to CD4 conventional and Foxp3+ thymocyte lineages, in which an intact mTEC compartment is a prerequisite for Foxp3+ nTreg cell development through the generation of Foxp3−CD25+ nTreg cell precursors.
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DOI:
10.4049/jimmunol.1000019
发表时间:
2010-06-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Lio CW;Dodson LF;Deppong CM;Hsieh CS;Green JM
通讯作者:
Green JM
影响因子:
64.8
作者:
Bettelli, E;Carrier, YJ;Kuchroo, VK
通讯作者:
Kuchroo, VK
DOI:
10.1084/jem.20101484
发表时间:
2011-08-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Gaspal F;Withers D;Saini M;Bekiaris V;McConnell FM;White A;Khan M;Yagita H;Walker LS;Anderson G;Lane PJ
通讯作者:
Lane PJ
影响因子:
5.4
作者:
Bupp, Melanie R. Gubbels;Edwards, Bonnie;Guo, Caiying;Wei, Datsen;Chen, Gang;Wong, Brian;Masteller, Emma;Peng, Stanford L.
通讯作者:
Peng, Stanford L.
影响因子:
32.4
作者:
Wu, L;D'Amico, A;Shortman, K
通讯作者:
Shortman, K