CD8 alpha alpha homodimer expression and role in CD8 T cell memory generation during influenza virus A infection in mice.
CD8 alpha alpha homodimer expression and role in CD8 T cell memory generation during influenza virus A infection in mice.
复制标题
小鼠甲型流感病毒感染期间 CD8 α α 同二聚体的表达及其在 CD8 T 细胞记忆生成中的作用。
DOI:
10.1002/eji.200535162
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发表时间:
2005
影响因子:
5.4
通讯作者:
Reinherz,EllisL
中科院分区:
文献类型:
--
作者:
Zhong,Weimin;Reinherz,EllisL
While the precise function of CD8αα homodimer expression on peripheral T cells is uncertain, recent evidence indicates that it facilitates survival and differentiation of lymphocytic choriomeningitis virus (LCMV)‐specific memory CD8αβ T cell precursorsin vivo. Here, we show that the CD8αα homodimer is also transiently up‐regulated on influenza A virus‐specific CD8αβ T cells after infectionin vivo, temporally correlating with increased levels of the memory T cell development‐ and survival‐related molecules IL‐7Rα and Bcl‐2, respectively. Unlike with LCMV, however, deletion of the CD8αα enhancer I does not abrogate CD8αα homodimer expression or manifest a significant impact on the generation of virus‐specific, functional effector and central memory T cells in influenza A virus infection. These results demonstrate that the role of CD8αα in the generation of antiviral CD8 T cell memory is complex, presumably because various viral stimuli differentially regulate CD8αα expression. Further studies are needed to define those ligands that induce CD8αα on T cells during acute viral infections, and the general relevance of this process to memory T cell formation.See accompanying commentary: http://dx.doi.org/10.1002/eji.200535516
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