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Natural killer cell activation enhances immune pathology and promotes chronic infection by limiting CD8+ T-cell immunity
被引:257
|作者:
Lang, Philipp A.
[1
,2
,3
]
Lang, Karl S.
[2
,4
]
Xu, Haifeng C.
[1
,3
]
Grusdat, Melanie
[2
]
Parish, Ian A.
[5
]
Recher, Mike
[6
]
Elford, Alisha R.
[1
]
Dhanji, Salim
[1
]
Shaabani, Namir
[2
]
Tran, Charles W.
[1
,3
]
Dissanayake, Dilan
[1
,3
]
Rahbar, Ramtin
[1
,3
]
Ghazarian, Magar
[1
]
Bruestle, Anne
[1
]
Fine, Jason
[3
]
Chen, Peter
[3
]
Weaver, Casey T.
[7
]
Klose, Christoph
[8
]
Diefenbach, Andreas
[8
]
Haeussinger, Dieter
[2
]
Carlyle, James R.
[3
]
Kaech, Susan M.
[5
,9
]
Mak, Tak W.
[1
,3
,10
]
Ohashi, Pamela S.
[1
,3
,10
]
机构:
[1] Univ Hlth Network, Ontario Canc Inst, Campbell Family Inst Breast Canc Res, Toronto, ON M5G 2C1, Canada
[2] Univ Dusseldorf, Dept Gastroenterol Hepatol & Infect Dis, D-40225 Dusseldorf, Germany
[3] Univ Toronto, Dept Immunol, Toronto, ON M5S 1A8, Canada
[4] Univ Essen Gesamthsch, Inst Immunol, D-45147 Essen, Germany
[5] Yale Univ, Dept Immunobiol, Sch Med, New Haven, CT 06520 USA
[6] Harvard Univ, Childrens Hosp, Div Immunol, Sch Med, Boston, MA 02115 USA
[7] Univ Alabama Birmingham, Dept Pathol, Birmingham, AL 35294 USA
[8] Univ Freiburg, Inst Med Microbiol & Hyg, Med Ctr, D-79104 Freiburg, Germany
[9] Yale Univ, Howard Hughes Med Inst, Sch Med, New Haven, CT 06520 USA
[10] Univ Toronto, Dept Med Biophys, Toronto, ON M5G 2M9, Canada
来源:
基金:
瑞士国家科学基金会;
关键词:
virus persistence;
effector T cells;
virus elimination;
NK cell activation;
regulatory innate immunity;
LYMPHOCYTIC CHORIOMENINGITIS VIRUS;
HEPATITIS-C VIRUS;
NK CELLS;
NKG2D RECEPTOR;
INHIBITORY RECEPTOR;
VIRAL PERSISTENCE;
DEPENDENT MANNER;
DENDRITIC CELLS;
IN-VIVO;
MICE;
D O I:
10.1073/pnas.1118834109
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:
Infections with HIV, hepatitis B virus, and hepatitis C virus can turn into chronic infections, which currently affect more than 500 million patients worldwide. It is generally thought that virus-mediated T-cell exhaustion limits T-cell function, thus promoting chronic disease. Here we demonstrate that natural killer (NK) cells have a negative impact on the development of T-cell immunity by using the murine lymphocytic choriomeningitis virus. NK cell-deficient (Nfil3(-/-), E4BP4(-/-)) mice exhibited a higher virus-specific T-cell response. In addition, NK cell depletion caused enhanced T-cell immunity in WT mice, which led to rapid virus control and prevented chronic infection in lymphocytic choriomeningitis virus clone 13- and reduced viral load in DOCILE-infected animals. Further experiments showed that NKG2D triggered regulatory NK cell functions, which were mediated by perforin, and limited T-cell responses. Therefore, we identified an important role of regulatory NK cells in limiting T-cell immunity during virus infection.
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页码:1210 / 1215
页数:6
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