CD4(+) T-cell inhibitory ligands: a tool for characterizing dysfunctional CD4(+) T cells during chronic infection.

CD4(+) T-cell inhibitory ligands: a tool for characterizing dysfunctional CD4(+) T cells during chronic infection.
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CD4( ) T 细胞抑制配体:用于表征慢性感染期间功能失调的 CD4( ) T 细胞的工具。

DOI:
10.1111/imm.12109
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发表时间:
2013
期刊:
影响因子:
6.4
通讯作者:
Mothé,BiancaR
Mothé,BiancaR
中科院分区:
医学2区
文献类型:
--
作者:
Dow,Courtney;Henderson,Ryan;Sette,Alessandro;Mothé,BiancaR

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CD 4 +T细胞的活化有助于建立和维持免疫反应。在淋巴细胞性脉络丛脑膜炎病毒(LCMV)克隆13感染期间,CD 4 +T细胞应答丧失。在本研究中,我们对LCMV克隆13感染后CD 4 +T细胞应答的性质感兴趣。为了研究这个问题,我们用LCMV克隆13感染C57 BL/6小鼠。我们使用GP 66 - 80 MHC II类四聚体来确定在用LCMV克隆13感染后是否存在CD 4 +T细胞。我们确定这些细胞是存在的并且是抗原特异性的,但不是功能性的。我们将其功能障碍归因于CD 4 +T细胞抑制性配体的存在。我们进一步对CD 4 +T细胞抑制性配体的存在进行染色。我们发现,在慢性感染期间,表达程序性死亡-1和CD 160的CD 4 +T细胞数量在时间过程研究中高于其他CD 4 +T细胞抑制配体。这些数据表明,使用CD 4 +T细胞抑制性配体作为表征试剂可以帮助理解与持续感染相关的复杂免疫反应。
Activation of CD4+T cells helps to establish and maintain immune responses. During infection with lymphocytic choriomeningitis virus (LCMV) clone 13, the CD4+T‐cell responses are lost. In this study, we were interested in the nature of the CD4+T‐cell responses following infection with LCMV clone 13. To pursue this question, we infected C57BL/6 mice with LCMV clone 13. We used a GP66‐80 MHC Class II tetramer to determine whether the CD4+T cells were present following infection with LCMV clone 13. We determined that the cells were present and antigen specific, but not functional. We attributed their dysfunction to the presence of CD4+T‐cell inhibitory ligands. We further stained for the presence of CD4+T‐cell inhibitory ligands. We found that the during chronic infection the number of CD4+T cells expressing programmed death‐1 and CD160 were greater over the time–course study than the other CD4+T‐cell inhibitory ligands. These data show that using CD4+T‐cell inhibitory ligands as a reagent for characterization can help in understanding the complex immune responses associated with persistent infections.
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