Antiviral CD4+ memory T cells are IL-15 dependent.
Antiviral CD4+ memory T cells are IL-15 dependent.
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DOI:
10.1084/jem.20061805
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发表时间:
2007-04-16
期刊:
影响因子:
--
通讯作者:
Surh CD
中科院分区:
文献类型:
--
作者:
Purton JF;Tan JT;Rubinstein MP;Kim DM;Sprent J;Surh CD
Survival and intermittent proliferation of memory CD4+ and CD8+ T cells appear to be controlled by different homeostatic mechanisms. In particular, contact with interleukin (IL)-15 has a decisive influence on memory CD8+ cells, but not memory CD4+ cells. Past studies of memory CD4+ cells have relied heavily on the use of naturally occurring memory phenotype (MP) cells as a surrogate for antigen (Ag)-specific memory cells. However, we show here that MP CD4+ cells contain a prominent subset of rapidly proliferating major histocompatibility complex (MHC) II–dependent cells. In contrast, Ag-specific memory CD4 cells have a slow turnover rate and are MHC II independent. In irradiated hosts, these latter cells ignore IL-15 and expand in response to the elevated levels of IL-7 in the lymphopenic hosts. In contrast, in normal nonlymphopenic hosts where IL-7 levels are low, memory CD4 cells are heavily dependent on IL-15. Significantly, memory CD4+ responsiveness to endogenous IL-15 reflects marked competition from other cells, especially CD8+ and natural killer cells, and increases considerably after removal of these cells. Therefore, under normal physiological conditions, homeostasis of CD8+ and CD4+ memory cells is quite similar and involves IL-15 and IL-7.
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影响因子:
32.4
作者:
Ernst, B;Lee, DS;Surh, CD
通讯作者:
Surh, CD
影响因子:
56.9
作者:
GRUSBY, MJ;JOHNSON, RS;GLIMCHER, LH
通讯作者:
GLIMCHER, LH
影响因子:
15.3
作者:
Geginat, J;Sallusto, F;Lanzavecchia, A
通讯作者:
Lanzavecchia, A
影响因子:
15.3
作者:
Goldrath, Ananda W;Sivakumar, Pallavur V;Glaccum, Moira;Kennedy, Mary K;Bevan, Michael J;Benoist, Christophe;Mathis, Diane;Butz, Eric A
通讯作者:
Butz, Eric A
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