Generation and maintenance of memory CD4(+) T Cells.

Generation and maintenance of memory CD4(+) T Cells.
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记忆CD4(+)T细胞的生成和维护。

DOI:
10.1016/j.coi.2009.02.005
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发表时间:
2009-04
影响因子:
7
通讯作者:
Surh CD
Surh CD
中科院分区:
医学2区
文献类型:
--
作者:
van Leeuwen EM;Sprent J;Surh CD

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在对感染性微生物的免疫应答过程中,病原体特异性naïve CD4+ T细胞广泛增殖并分化为效应细胞。大多数这些细胞很快死亡,但一小部分效应细胞作为记忆细胞存在,以增强对同一病原体的保护。最近的研究表明,在初次反应期间,强烈的TCR刺激对于产生长寿命记忆CD4+ T细胞至关重要。记忆细胞似乎同样来源于效应细胞的所有亚群,并且记忆细胞也可以在二次反应中获得额外的功能能力。静息记忆CD4+细胞依赖于与IL-7和IL-15接触的信号,而不是MHC II类,以维持其生存和间歇性稳态增殖。
In the course of an immune response to an infectious microbe, pathogen-specific naïve CD4+ T cells proliferate extensively and differentiate into effector cells. Most of these cells die rapidly but a small fraction of effector cells persist as memory cells to confer enhanced protection against the same pathogen. Recent advances indicate that strong TCR stimulation during the primary response is essential for generation of long-lived memory CD4+ T cells. Memory cells appear to be derived equally from all subsets of effector cells, and memory cells can also acquire additional functional capabilities during the secondary response. Resting memory CD4+ cells are dependent on signals from contact with IL-7 and IL-15, but not MHC class II, for their survival and intermittent homeostatic proliferation.
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