共 16 条
Loss of DNAM-1 contributes to CD8+ T-cell exhaustion in chronic HIV-1 infection
被引:46
作者:
Cella, Marina
[1
]
Presti, Rachel
[1
]
Vermi, William
[2
]
Lavender, Kerry
[3
]
Turnbull, Emma
[3
]
Ochsenbauer-Jambor, Christina
[4
]
Kappes, John C.
[4
]
Ferrari, Guido
[5
]
Kessels, Lisa
[6
]
Williams, Ian
[7
]
McMichael, Andrew J.
[8
]
Haynes, Barton F.
[5
]
Borrow, Persephone
[3
]
Colonna, Marco
[1
]
机构:
[1] Washington Univ, Sch Med, Dept Pathol, St Louis, MO 63110 USA
[2] Univ Brescia, Spedali Civili, Dept Pathol 1, Brescia, Italy
[3] Univ Oxford, Jenner Inst, Compton, England
[4] Univ Alabama Birmingham, Birmingham, AL USA
[5] Duke Univ, Med Ctr, Durham, NC USA
[6] Washington Univ, Sch Med, AIDS Clin Trial Unit, St Louis, MO 63110 USA
[7] Mortimer Market Ctr, Ctr Sexual Hlth & HIV Res, London, England
[8] Univ Oxford, Human Immunol Unit, Weatherall Inst Mol Med, MRC, Oxford, England
关键词:
Co-stimulation;
Exhaustion;
HIV-1;
LYMPHOCYTES;
PD-1;
D O I:
10.1002/eji.200940234
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
The hallmark of chronic viral infections is a progressive exhaustion of antigen-specific CD8(+) T cells that leads to persisting viral replication. It is generally believed that exhaustion is a consequence of the accumulation of multiple inhibitory receptors on CD8(+) T cells that makes them dysfunctional. Here, we show that during human chronic HIV-1 infection, a CD8(+) T-cell positive costimulatory pathway mediated by DNAX-activating molecule-1 is also disrupted. Thus, DNAX-activating molecule-1 downregulation on CD8(+) T cells aggravates the impairment of CTL effector function in chronic HIV-1 infection.
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页码:949 / 954
页数:6
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