Digital NFATc2 activation per cell transforms graded T cell receptor activation into an all-or-none IL-2 expression.
Digital NFATc2 activation per cell transforms graded T cell receptor activation into an all-or-none IL-2 expression.
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DOI:
10.1371/journal.pone.0000935
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发表时间:
2007-09-26
期刊:
影响因子:
3.7
通讯作者:
Baumgrass R
中科院分区:
文献类型:
--
作者:
Podtschaske M;Benary U;Zwinger S;Höfer T;Radbruch A;Baumgrass R
The expression of interleukin-2 (IL-2) is a key event in T helper (Th) lymphocyte activation, controlling both, the expansion and differentiation of effector Th cells as well as the activation of regulatory T cells. We demonstrate that the strength of TCR stimulation is translated into the frequency of memory Th cells expressing IL-2 but not into the amount of IL-2 per cell. This molecular switch decision for IL-2 expression per cell is located downstream of the cytosolic Ca2+ level. Here we show that in a single activated Th cell, NFATc2 activation is digital but NF-κB activation is graded after graded T cell receptor (TCR) signaling. Subsequently, NFATc2 translocates into the nucleus in an all-or-none fashion per cell, transforming the strength of TCR-stimulation into the number of nuclei positive for NFATc2 and IL-2 transcription. Thus, the described NFATc2 switch regulates the number of Th cells actively participating in an immune response.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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GARRITY, PA;CHEN, D;WOLD, BJ
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DOI:
10.1084/jem.20050855
发表时间:
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期刊:
The Journal of experimental medicine
影响因子:
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作者:
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64.8
作者:
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通讯作者:
CRABTREE, GR