A vital role for interleukin-21 in the control of a chronic viral infection.

A vital role for interleukin-21 in the control of a chronic viral infection.
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白介素21在控制慢性病毒感染中的至关重要作用。

DOI:
10.1126/science.1175194
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发表时间:
2009-06-19
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Zajac AJ
Zajac AJ
中科院分区:
其他
文献类型:
--
作者:
Yi JS;Du M;Zajac AJ

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Understanding the factors that regulate the induction, quality and longevity of anti-viral T cell responses is essential for devising rational strategies to prevent or combat infections. In this study we show that interleukin-21 (IL-21), likely produced by CD4+ T cells, directly influences the generation of poly-functional CD8+ T cells and that the number of CD4+ T cells that produce IL-21 differs markedly between acute and chronic infections. Strikingly, IL-21 regulates the development of CD8+ T cell exhaustion and the ability to contain chronic lymphocytic choriomeningitis virus infection. Thus, IL-21 serves as a critical helper factor that shapes the functional quality of anti-viral CD8+ T cells and is required for viral control.
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