Interleukin-2 enhances CD4+ T cell memory by promoting the generation of IL-7R alpha-expressing cells.
Interleukin-2 enhances CD4+ T cell memory by promoting the generation of IL-7R alpha-expressing cells.
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DOI:
10.1084/jem.20062381
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发表时间:
2007-03-19
期刊:
影响因子:
--
通讯作者:
Abbas AK
中科院分区:
文献类型:
--
作者:
Dooms H;Wolslegel K;Lin P;Abbas AK
The common γ chain cytokines interleukin (IL)-2 and IL-7 are important regulators of T cell homeostasis. Although IL-2 is implicated in the acute phase of the T cell response, IL-7 is important for memory T cell survival. We asked whether regulated responsiveness to these growth factors is determined by temporal expression of the cytokine-specific IL-2 receptor (R) α and IL-7Rα chains. We demonstrate that IL-2Rα is expressed early after priming in T cell receptor–transgenic CD4+ T cells, whereas IL-7Rα expression is lost. In the later stage of the response, IL-7Rα is reexpressed while IL-2Rα expression is silenced. This reciprocal pattern of IL-2Rα/IL-7Rα expression is disturbed when CD4+ T cells are primed in the absence of IL-2 signals. Primed IL-2−/− or CD25−/− (IL-2Rα−/−) CD4+ T cells, despite showing normal induction of activation markers and cell division, fail to reexpress IL-7Rα late in the response. Because the generation of CD4+ memory T cells is dependent on IL-7–IL-7Rα interactions, primed IL-2−/− or CD25−/− CD4+ T cells develop poorly into long-lived memory cells. Retrovirus-mediated expression of IL-7Rα in IL-2−/− T cells restores their capacity for long-term survival. These results identify IL-2 as a factor regulating IL-7Rα expression and, consequently, memory T cell homeostasis in vivo.
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影响因子:
4.4
作者:
Leung, DTM;Morefield, S;Willerford, DM
通讯作者:
Willerford, DM
DOI:
10.1084/jem.187.2.225
发表时间:
1998-01-19
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Khoruts A;Mondino A;Pape KA;Reiner SL;Jenkins MK
通讯作者:
Jenkins MK
DOI:
10.1084/jem.20030735
发表时间:
2003-12-15
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Kondrack RM;Harbertson J;Tan JT;McBreen ME;Surh CD;Bradley LM
通讯作者:
Bradley LM
影响因子:
30.5
作者:
Kaech, SM;Tan, JT;Ahmed, R
通讯作者:
Ahmed, R
影响因子:
30.5
作者:
Lantz, O;Grandjean, I;Di Santo, JP
通讯作者:
Di Santo, JP