共 196 条
Monocyte-mediated defense against microbial pathogens
被引:836
作者:
Serbina, Natalya V.
[1
]
Jia, Ting
[1
]
Hohl, Tobias M.
[1
]
Pamere, Eric G.
[1
]
机构:
[1] Mem Sloan Kettering Canc Ctr, Sloan Kettering Inst, Program Immunol, Dept Med,Infect Dis Serv, New York, NY 10021 USA
关键词:
inflammation;
monocyte differentiation;
chemokines;
microbial pathogens;
D O I:
10.1146/annurev.immunol.26.021607.090326
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
Circulating blood monocytes supply peripheral tissues with macrophage and dendritic cell (DC) precursors and, in the setting of infection, also contribute directly to immune defense against microbial pathogens. In humans and mice, monocytes are divided into two major subsets that either specifically traffic into inflamed tissues or, in the absence of overt inflammation, constitutively maintain tissue macrophage/DC populations. Inflammatory monocytes respond rapidly to microbial stimuli by secreting cytokines and antimicrobial factors, express the CCR2 chemokine receptor, and traffic to sites of microbial infection in response to monocyte chemoattractant protein (MCP)-1 (CCL2) secretion. In murine models, CCR2 mediated monocyte recruitment is essential for defense against Listeria monocytogenes, Mycobacterium tuberculosis, Toxoplasma gondii, and Cryptococcus neoformans infection, implicating inflammatory monocytes in defense against bacterial, protozoal, and fungal pathogens. Recent studies indicate that inflammatory monocyte recruitment to sites of infection is complex, involving CCR2-mediated emigration of monocytes from the bone marrow into the bloodstream, followed by trafficking into infected tissues. The in vivo mechanisms that promote chemokine secretion, monocyte differentiation and trafficking, and finally monocyte-mediated microbial killing remain active and important areas of investigation.
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页码:421 / 452
页数:32
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