Transcription factor Foxo1 represses T-bet-mediated effector functions and promotes memory CD8(+) T cell differentiation.
Transcription factor Foxo1 represses T-bet-mediated effector functions and promotes memory CD8(+) T cell differentiation.
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DOI:
10.1016/j.immuni.2012.01.015
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发表时间:
2012-03-23
期刊:
影响因子:
32.4
通讯作者:
Shrikant PA
中科院分区:
文献类型:
--
作者:
Rao RR;Li Q;Gubbels Bupp MR;Shrikant PA
The evolutionary conserved Foxo transcription factors are important regulators of quiescence and longevity. Although, Foxo1 is known to be important in regulating CD8+ T cell trafficking and homeostasis, its role in functional differentiation of antigen stimulated CD8+ T cells is unclear. Herein, we demonstrate that inactivation of Foxo1 was essential for instructing T-bet transcription factor-mediated effector differentiation of CD8+ T cells. The Foxo1 inactivation was dependent on mTORC1 kinase, as blockade of mTORC1 abrogated mTORC2 mediated Akt (Ser473) kinase phosphorylation, resulting in Foxo1-dependent switch from T-bet to Eomesodermin transcription factor activation and increase in memory precursors. Silencing Foxo1 ablated interleukin-12 and rapamycin enhanced CD8+ T cell memory responses, and restored T-bet mediated effector functions. These results demonstrate an essential role of Foxo1 in actively repressing effector or terminal differentiation processes to promote memory CD8+ T cell development, and identify the functionally diverse mechanisms utilized by Foxo1 to promote quiescence and longevity.
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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
影响因子:
32.4
作者:
Macintyre AN;Finlay D;Preston G;Sinclair LV;Waugh CM;Tamas P;Feijoo C;Okkenhaug K;Cantrell DA
通讯作者:
Cantrell DA
影响因子:
30.5
作者:
通讯作者:
--
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:
30.5
作者:
通讯作者:
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