Inflammatory cytokines as a third signal for T cell activation.

Inflammatory cytokines as a third signal for T cell activation.
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DOI:
10.1016/j.coi.2010.02.013
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发表时间:
2010-06
影响因子:
7
通讯作者:
Mescher MF
Mescher MF
中科院分区:
医学2区
文献类型:
--
作者:
Curtsinger JM;Mescher MF

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CD8 T cells require a third signal, along with Ag and costimulation, to make a productive response and avoid death and/or tolerance induction. Recent studies indicate that IL-12 and Type I IFN (IFNα/β) are the major sources of signal 3 in a variety of responses, and that the two cytokines stimulate a common regulatory program involving altered expression of about 350 genes. Signal 3-driven chromatin remodeling is likely to play a major role in this regulation. Although less well studied, there is emerging evidence that CD4 T cells may also require a ‘third signal’ for a productive response and that IL-1 can provide this signal. Signal 3 cytokines can replace adjuvants in supporting in vivo T cell responses to peptide and protein antigens, and a better understanding of their activities and mechanisms should contribute to more rational design of vaccines.
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