Differential expression of Ly6C and T-bet distinguish effector and memory Th1 CD4(+) cell properties during viral infection.

Differential expression of Ly6C and T-bet distinguish effector and memory Th1 CD4(+) cell properties during viral infection.
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DOI:
10.1016/j.immuni.2011.08.016
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发表时间:
2011-10-28
期刊:
影响因子:
32.4
通讯作者:
Kaech SM
Kaech SM
中科院分区:
医学1区
文献类型:
--
作者:
Marshall HD;Chandele A;Jung YW;Meng H;Poholek AC;Parish IA;Rutishauser R;Cui W;Kleinstein SH;Craft J;Kaech SM

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CD 4 + T细胞分化为多种效应类型,但目前尚不清楚它们在体内感染过程中如何形成记忆T细胞。分析病毒特异性CD 4 + T细胞显示,具有辅助性T细胞1(Th 1)或滤泡辅助性T细胞(Tfh)特征的效应细胞分化为记忆细胞,尽管Tfh细胞标志物的表达随着时间的推移而下降。与病毒特异性效应CD 8 + T细胞相反,IL-7 R表达增加不是CD 4+记忆前体细胞的可靠标志物。然而,减少Ly 6C和T-bet(Tbx 21)的表达区分的一个子集的Th 1细胞,显示更长的寿命和增殖反应继发感染。此外,Ly 6CloT-betint Th 1效应细胞的基因表达谱几乎与成熟的记忆性CD 4 + T细胞相同,表明在急性病毒感染期间,该亚群中的记忆性CD 4 + T细胞特征早期成熟。这项研究为急性病毒感染后记忆性CD 4 + T细胞的发育提供了一个框架。
CD4+ T cells differentiate into multiple effector types, but it is unclear how they form memory T cells during infection in vivo. Profiling virus-specific CD4+ T cells revealed that effector cells with T helper 1 (Th1) or T follicular helper (Tfh) cell characteristics differentiated into memory cells, although expression of Tfh cell markers declined over time. In contrast to virus-specific effector CD8+ T cells, increased IL-7R expression was not a reliable marker of CD4+ memory precursor cells. However, decreased Ly6C and T-bet (Tbx21) expression distinguished a subset of Th1 cells that displayed greater longevity and proliferative responses to secondary infection. Moreover, the gene expression profile of Ly6CloT-betint Th1 effector cells was virtually identical to mature memory CD4+ T cells, indicating early maturation of memory CD4+ T cell features in this subset during acute viral infection. This study provides a framework for memory CD4+ T cell development after acute viral infection.
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