Cutting edge: The transcription factor eomesodermin enables CD8+ T cells to compete for the memory cell niche.

Cutting edge: The transcription factor eomesodermin enables CD8+ T cells to compete for the memory cell niche.
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DOI:
10.4049/jimmunol.1002042
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发表时间:
2010-11-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Reiner SL
Reiner SL
中科院分区:
其他
文献类型:
--
作者:
Banerjee A;Gordon SM;Intlekofer AM;Paley MA;Mooney EC;Lindsten T;Wherry EJ;Reiner SL

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CD8+ T细胞响应细胞内感染产生细胞后代,成为终末分化的效应细胞和自我更新的记忆细胞。T-bet和Eomesodermin是细胞毒性淋巴细胞系的关键转录因子。我们现在发现缺乏Eomesodermin的CD8+ T细胞在参与抗原特异性中枢记忆细胞池的竞争中表现不佳。eomesdermin缺陷的CD8+ T细胞经历初级克隆扩增,但在长期存活、填充骨髓生态位和再次攻击后再扩增方面存在缺陷。Eomesodermin缺乏的CD8+ T细胞的表型支持了T-bet和Eomesodermin可以冗余诱导效应功能的假设,但也可以相互促进抗原特异性记忆细胞的终端分化和自我更新。
CD8+ T cells responding to intracellular infection give rise to cellular progeny that become terminally differentiated effector cells and self-renewing memory cells. T-bet and Eomesodermin are key transcription factors of cytotoxic lymphocyte lineages. We now show that CD8+ T cells lacking Eomesodermin compete poorly in contributing to the pool of antigen-specific central memory cells. Eomesodermin-deficient CD8+ T cells undergo primary clonal expansion but are defective in long-term survival, populating the bone marrow niche, and re-expanding after re-challenge. The phenotype of Eomesodermin-deficient CD8+ T cells supports the hypothesis that T-bet and Eomesodermin can act redundantly to induce effector functions, but can also act to reciprocally promote terminal differentiation versus self-renewal of antigen-specific memory cells.
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