Cutting edge: Rapamycin augments pathogen-specific but not graft-reactive CD8+ T cell responses.

Cutting edge: Rapamycin augments pathogen-specific but not graft-reactive CD8+ T cell responses.
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DOI:
10.4049/jimmunol.1001176
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发表时间:
2010-08-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Ford ML
Ford ML
中科院分区:
其他
文献类型:
--
作者:
Ferrer IR;Wagener ME;Robertson JM;Turner AP;Araki K;Ahmed R;Kirk AD;Larsen CP;Ford ML

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Recent evidence demonstrating that exposure to rapamycin during viral infection increased the quantity and quality of antigen-specific T cells poses an intriguing paradox, since rapamycin is used in transplantation to dampen, rather than enhance, donor-reactive T cell responses. In this report, we compared the effects of rapamycin on the antigen-specific T cell response to a bacterial infection versus a transplant. Using a transgenic system in which the antigen and the responding T cell population were identical in both cases, we observed that treatment with rapamycin augmented the antigen-specific T cell response to a pathogen, while it failed to do so when the antigen was presented in the context of a transplant. These results suggest that the environment in which an antigen is presented alters the influence of rapamycin on antigen-specific T cell expansion, and highlights a fundamental difference between antigen presented by an infectious agent as compared to an allograft.
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