Programming for CD8 T cell memory development requires IL-12 or type I IFN.
Programming for CD8 T cell memory development requires IL-12 or type I IFN.
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DOI:
10.4049/jimmunol.0803484
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发表时间:
2009-03-01
期刊:
影响因子:
--
通讯作者:
Mescher MF
中科院分区:
文献类型:
--
作者:
Xiao Z;Casey KA;Jameson SC;Curtsinger JM;Mescher MF
Inflammation can have both positive and negative effects on development of CD8 T cell memory, but the relative contributions and cellular targets of the cytokines involved are unclear. Using CD8 T cells lacking receptors for IL-12, Type I IFN, or both, we show that these cytokines act directly on CD8 T cells to support memory formation in response to vaccinia virus and Listeria monocytogenes infections. Development of memory to vaccinia is supported predominantly by IL-12, while both IL-12 and Type I IFN contribute to memory formation in response to Listeria. In contrast to memory formation, the inability to respond to IL-12 or Type I IFN had a relatively small impact on the level of primary expansion, with at most a 3-fold reduction in the case of responses to Listeria. We further show that programming for memory development by IL-12 is complete within three days of the initial naïve CD8 T cell response to Ag. This programming does not result in formation of a population that expresses killer cell lectin-like receptor G1 (KLRG1), and the majority of the resulting memory cells have a CD62Lhi phenotype characteristic of central memory cells. Consistent with this, the cells undergo strong expansion upon re-challenge and provide protective immunity. These data demonstrate that IL-12 and Type I IFN play an essential early role in determining whether Ag encounter by naive CD8 T cells results in formation of a protective memory population.
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DOI:
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发表时间:
2003-05-05
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
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