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.
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DOI:
10.1084/jem.20031799
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发表时间:
2004-04-05
期刊:
影响因子:
--
通讯作者:
Oxenius A
中科院分区:
文献类型:
--
作者:
Wolint P;Betts MR;Koup RA;Oxenius A
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.
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影响因子:
64.5
作者:
Kaech, SM;Hemby, S;Ahmed, R
通讯作者:
Ahmed, R
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
影响因子:
4.3
作者:
Kannan, K;Stewart, RM;Holcombe, RF
通讯作者:
Holcombe, RF
影响因子:
64.8
作者:
KAGI, D;LEDERMANN, B;HENGARTNER, H
通讯作者:
HENGARTNER, H
影响因子:
5.4
作者:
ISAAZ, S;BAETZ, K;GRIFFITHS, GM
通讯作者:
GRIFFITHS, GM