共 45 条
IL2Rβ-dependent signals drive terminal exhaustion and suppress memory development during chronic viral infection
被引:49
作者:
Beltra, Jean-Christophe
[1
,2
]
Bourbonnais, Sara
[1
]
Bedard, Nathalie
[3
]
Charpentier, Tania
[4
]
Boulange, Moana
[1
,2
]
Michaud, Eva
[1
,2
]
Boufaied, Ines
[5
]
Bruneau, Julie
[3
,6
]
Shoukry, Naglaa H.
[3
,7
]
Lamarre, Alain
[4
]
Decaluwe, Helene
[1
,2
,8
]
机构:
[1] St Justine Univ Hosp, Res Ctr, Cytokines & Adapt Immun Lab, Montreal, PQ H3T 1C5, Canada
[2] Univ Montreal, Fac Med, Dept Microbiol & Immunol, Montreal, PQ H3C 3J7, Canada
[3] Univ Montreal Hosp, Res Ctr, Montreal, PQ H2X 0A9, Canada
[4] Inst Armand Frappier, Inst Natl Rech Sci, Immunovirol Lab, Laval, PQ H7V 1B7, Canada
[5] St Justine Univ Hosp, Res Ctr, Flow Cytometry Platform, Montreal, PQ H3T 1C5, Canada
[6] Univ Montreal, Fac Med, Dept Family Med & Emergency Med, Montreal, PQ H2X 0A9, Canada
[7] Univ Montreal, Fac Med, Dept Med, Montreal, PQ H3T 1J4, Canada
[8] Univ Montreal, Fac Med, Dept Pediat, Immunol & Rheumatol Div, Montreal, PQ H3T 1C5, Canada
来源:
基金:
加拿大健康研究院;
关键词:
CD8 T cell;
IL-2;
IL-15;
exhaustion;
memory T cell;
CD8(+) T-CELLS;
LYMPHOCYTIC CHORIOMENINGITIS VIRUS;
INHIBITORY RECEPTOR PD-1;
EFFECTOR;
IL-2;
DIFFERENTIATION;
EXPRESSION;
GENERATION;
RESPONSES;
CYTOKINES;
D O I:
10.1073/pnas.1604256113
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
Exhaustion of CD8(+) T cells severely impedes the adaptive immune response to chronic viral infections. Despite major advances in our understanding of the molecular regulation of exhaustion, the cytokines that directly control this process during chronicity remain unknown. We demonstrate a direct impact of IL-2 and IL-15, two common gamma-chain-dependent cytokines, on CD8(+) T-cell exhaustion. Common to both cytokine receptors, the IL-2 receptor beta (IL2R beta) chain is selectively maintained on CD8(+) T cells during chronic lymphocytic choriomeningitis virus and hepatitis C virus infections. Its expression correlates with exhaustion severity and identifies terminally exhausted CD8(+) T cells both in mice and humans. Genetic ablation of the IL2R beta chain on CD8(+) T cells restrains inhibitory receptor induction, in particular 2B4 and Tim-3; precludes terminal differentiation of highly defective PD-1(hi) effectors; and rescues memory T-cell development and responsiveness to IL-7-dependent signals. Together, we ascribe a previously unexpected role to IL-2 and IL-15 as instigators of CD8(+) T-cell exhaustion during chronic viral infection.
引用
收藏
页码:E5444 / E5453
页数:10
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