Immediate cytotoxicity but not degranulation distinguishes effector and memory subsets of CD8+ T cells.

Immediate cytotoxicity but not degranulation distinguishes effector and memory subsets of CD8+ T cells.
复制标题

DOI:
10.1084/jem.20031799
复制
发表时间:
2004-04-05
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Oxenius A
Oxenius A
中科院分区:
其他
文献类型:
--
作者:
Wolint P;Betts MR;Koup RA;Oxenius A

文献摘要

参考文献

被引文献

相似文献

CD 8 + T细胞在病毒感染的解决和遏制中发挥着核心作用。CD 8 + T细胞的关键效应子功能是它们对感染细胞的细胞溶解活性。在这里,我们研究了在幼稚,效应,和中央与效应记忆CD 8 + T细胞特异性相同的糖蛋白衍生的表位的淋巴细胞性脉络丛脑膜炎病毒的细胞溶解活性的调节。我们的研究结果表明,脱粒的动力学,评估了一种新的流式细胞术为基础的测定,是相同的效应和两个子集的记忆CD 8 + T细胞,但在幼稚的CD 8 + T细胞不存在。然而,立即溶细胞活性在效应T细胞中最明显,在效应记忆T细胞中较低,并且在中央记忆T细胞中不存在,这与溶细胞颗粒中存在的溶细胞效应分子的相应水平相关。这些结果表明,一个固有的程序脱颗粒的抗原经历的细胞,而不是幼稚的CD 8 + T细胞的一个功能,CD 8 + T细胞诱导靶细胞凋亡/死亡的能力是依赖于颗粒蛋白质含量,而不是脱颗粒本身的行为。此外,这些结果提供了一种潜在的机制,通过该机制避免了淋巴结内的抗原呈递细胞的中央记忆CD 8 + T细胞介导的死亡。
CD8+ T cells play a central role in the resolution and containment of viral infections. A key effector function of CD8+ T cells is their cytolytic activity toward infected cells. Here, we studied the regulation of cytolytic activity in naive, effector, and central versus effector memory CD8+ T cells specific for the same glycoprotein-derived epitope of lymphocytic choriomeningitis virus. Our results show that the kinetics of degranulation, assessed by a novel flow cytometric based assay, were identical in effector and both subsets of memory CD8+ T cells, but absent in naive CD8+ T cells. However, immediate cytolytic activity was most pronounced in effector T cells, low in effector memory T cells, and absent in central memory T cells, correlating with the respective levels of cytolytic effector molecules present in lytic granules. These results indicate that an inherent program of degranulation is a feature of antigen-experienced cells as opposed to naive CD8+ T cells and that the ability of CD8+ T cells to induce target cell apoptosis/death is dependent on granule protein content rather than on the act of degranulation itself. Furthermore, these results provide a potential mechanism by which central memory CD8+ T cell–mediated death of antigen-presenting cells within the lymph node is avoided.
DOI: 10.1016/s0092-8674(02)01139-x
发表时间: 2002-12-13
期刊: CELL
影响因子: 64.5
作者:
Kaech, SM;Hemby, S;Ahmed, R
通讯作者: Ahmed, R
细胞毒性T淋巴细胞颗粒是分泌的溶酶体,含有穿孔蛋白和颗粒酶。
DOI: 10.1084/jem.173.5.1099
发表时间: 1991-05-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
Peters PJ;Borst J;Oorschot V;Fukuda M;Krähenbühl O;Tschopp J;Slot JW;Geuze HJ
通讯作者: Geuze HJ
DOI: 10.1038/369031a0
发表时间: 1994-05-05
期刊: NATURE
影响因子: 64.8
作者:
KAGI, D;LEDERMANN, B;HENGARTNER, H
通讯作者: HENGARTNER, H
DOI: 10.1002/eji.1830250432
发表时间: 1995-04-01
影响因子: 5.4
作者:
ISAAZ, S;BAETZ, K;GRIFFITHS, GM
通讯作者: GRIFFITHS, GM