Migratory properties of naive, effector, and memory CD8(+) T cells.

Migratory properties of naive, effector, and memory CD8(+) T cells.
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DOI:
10.1084/jem.194.7.953
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发表时间:
2001-10-01
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
von Andrian UH
von Andrian UH
中科院分区:
其他
文献类型:
--
作者:
Weninger W;Crowley MA;Manjunath N;von Andrian UH

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有人提出,两种不同的经历过抗原的 T 细胞亚群可以通过它们优先归巢于淋巴器官(中央记忆细胞)或非淋巴组织(效应记忆/效应细胞)的能力来区分。我们最近发现,在白细胞介素 (IL)-15 (CD8IL-15) 中培养的鼠抗原引发的 CD8+ T 细胞在表型和功能上与中枢记忆细胞相似。相反,在 IL-2 (CD8IL-2) 中培养的引发的 CD8+ T 细胞成为细胞毒性效应细胞。在这里,研究了这两个子集的迁徙行为。幼稚的 CD8IL-15 细胞和较小程度的 CD8IL-2 细胞定位于脾脏中的 T 细胞区域,但只有幼稚的 CD8IL-15 细胞定位于淋巴结 (LN) 和派尔氏淋巴结。外周淋巴结的活体显微镜检查显示,CD8IL-15 细胞而非 CD8IL-2 细胞在高内皮微静脉 (HEV) 中滚动并停滞。 CD8IL-15 细胞向 LN 的迁移依赖于 L-选择素和结合 CC 趋化因子受体 (CCR)7 所需的趋化因子。两种经历过抗原的群体(而非初始 T 细胞)对炎症趋化因子做出反应并在炎症部位积聚。然而,CD8IL-2 细胞迁移至发炎腹膜的效率比 CD8IL-15 细胞高 12 倍。此外,CD8IL-15 细胞在炎症部位再次遇到抗原后迅速增殖。因此,中枢记忆样CD8IL-15细胞热切地归巢于淋巴器官,并适度归巢于炎症部位,在那里它们介导快速回忆反应,而CD8IL-2效应T细胞在发炎组织中积聚,但被排除在大多数淋巴器官之外。
It has been proposed that two different antigen-experienced T cell subsets may be distinguishable by their preferential ability to home to lymphoid organs (central memory cells) or nonlymphoid tissues (effector memory/effector cells). We have shown recently that murine antigen-primed CD8+ T cells cultured in interleukin (IL)-15 (CD8IL-15) resemble central memory cells in phenotype and function. In contrast, primed CD8+ T cells cultured in IL-2 (CD8IL-2) become cytotoxic effector cells. Here, the migratory behavior of these two subsets was investigated. Naive, CD8IL-15 cells and, to a lesser degree, CD8IL-2 cells localized to T cell areas in the spleen, but only naive and CD8IL-15 cells homed to lymph nodes (LNs) and Peyer's patches. Intravital microscopy of peripheral LNs revealed that CD8IL-15 cells, but not CD8IL-2 cells, rolled and arrested in high endothelial venules (HEVs). Migration of CD8IL-15 cells to LNs depended on L-selectin and required chemokines that bind CC chemokine receptor (CCR)7. Both antigen-experienced populations, but not naive T cells, responded to inflammatory chemokines and accumulated at sites of inflammation. However, CD8IL-2 cells were 12 times more efficient in migrating to inflamed peritoneum than CD8IL-15 cells. Furthermore, CD8IL-15 cells proliferated rapidly upon reencounter with antigen at sites of inflammation. Thus, central memory-like CD8IL-15 cells home avidly to lymphoid organs and moderately to sites of inflammation, where they mediate rapid recall responses, whereas CD8IL-2 effector T cells accumulate in inflamed tissues, but are excluded from most lymphoid organs.
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