期刊
JOURNAL OF LEUKOCYTE BIOLOGY
卷 84, 期 4, 页码 1039-1046出版社
FEDERATION AMER SOC EXP BIOL
DOI: 10.1189/jlb.0408256
关键词
IFN-gamma; adenovirus; dendritic cells; Toll-like receptor 9; hepatic
资金
- NCI NIH HHS [CA123938-01, F32 CA123938] Funding Source: Medline
- NIDDK NIH HHS [DK068346, R01 DK068346] Funding Source: Medline
The liver contains a unique repertoire of immune cells and a particular abundance of NK cells. We have found that CD11c defines a distinct subset of NK cells (NK1.1(+) CD3(-)) in the murine liver whose function was currently unknown. In naive animals, CD11c(+) liver NK cells displayed an activated phenotype and possessed enhanced effector functions when compared with CD11c-liver NK cells. During the innate response to adenovirus infection, CD11c(+) NK cells were the more common IFN-gamma-producing NK cells in the liver, demonstrated enhanced lytic capability, and gained a modest degree of APC function. The mechanism of IFN-gamma production in vivo depended on TLR9 ligation as well as IL-12 and -18. Taken together, our findings demonstrate that CD11c(+) NK cells are a unique subset of NK cells in the murine liver that contribute to the defense against adenoviral hepatitis.
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