期刊
EUROPEAN JOURNAL OF IMMUNOLOGY
卷 44, 期 3, 页码 715-727出版社
WILEY
DOI: 10.1002/eji.201343775
关键词
Bacterial infection; CD8(+) T cells; ELF4; Memory
类别
资金
- National Institutes of Health [R01-AI077536, R01-AI077536-02S1]
Most differentiated CD8(+) T cells die off at the end of an infection, revealing two main subsets of memory T cells central and effector memory which can be found in lymphoid tissues or circulating through nonlymphoid organs, respectively. The cell intrinsic regulation of the differentiation of CD8(+) T cells to effector and central memory remains poorly studied. Herein, we describe a novel role of the ETS transcription factor ELF4 in the development and function of memory CD8(+) T cells following infection with Listeria monocytogenes. Adoptively transferred Elf4(-/-) naive CD8(+) T cells produced lower numbers of effector memory CD8(+) T cells despite a normal pool of central memory. This was caused by suboptimal priming and decreased survival of CD8(+) T cells at the peak of response while enhanced Notch1 signaling and upregulation of eomesodermin correlated with normal development of Elf4(-/-) central memory. Finally, loss of ELF4 impaired the expansion of both central and effector memory CD8(+) T cells in a recall response by also activating Notch1 signaling. Altogether, ELF4 emerges as a novel transcriptional regulator of CD8(+) T-cell differentiation in response to infection.
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