Transfer of CD8+ T cell memory using Bcl-2 as a marker.
Transfer of CD8+ T cell memory using Bcl-2 as a marker.
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DOI:
10.4049/jimmunol.1103481
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发表时间:
2013-02-01
期刊:
影响因子:
--
通讯作者:
He YW
中科院分区:
文献类型:
--
作者:
Dunkle A;Dzhagalov I;Gordy C;He YW
The processes that regulate T cell memory generation are important for therapeutic design and the immune response to disease. However, what allows a subset of effector T cells to survive the contraction period to become memory cells is incompletely understood. The Bcl-2 family is critical for T cell survival, and Bcl-2 has been proposed to be important for the survival of memory cells. However, previous studies have relied on double-knockout models, potentially skewing the role of Bcl-2, and the use of Bcl-2 as a marker in adoptive transfer experiments, a method required to confirm the memory potential of cell subsets, has not been possible due to the intracellular localization of the protein. In this study, we present a novel Bcl-2-reporter mouse model and show for the first time that a distinct subset of effector T cells, and also a subset within the CD127hiKLRG1lo memory precursor effector cell (MPEC) population, retains high Bcl-2 expression at the peak of the CD8+ T cell response to Listeria monocytogenes. Furthermore, we show that Bcl-2 correlates with memory potential in adoptive transfer experiments using both total responding CD8+ T cells and MPECs. These results show that even within the MPEC population, Bcl-2 confers a survival advantage in a subset of effector CD8+ T cells that allows differentiation into memory cells and cement Bcl-2 as a critical factor for T cell memory.
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