Studies in listeriosis show the strong symbiosis between the innate cellular system and the T-cell response

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Abstract

Resistance to infection with Listeria monocytogenes involves a series of cellular interactions, many of which are carried out by cytokines. Macrophages, NK cells and neutrophils participate in early stages of Listeria resistance. The neutrophil is specially important for clearance of the liver phase of listeriosis. Macrophages and NK cells interact by way ofIL-12 and TNF, which induce the NK cell to produce LFN-γ. IFN-γ is the major macrophage-activating cytokine. The CB-17 SCID mouse shows these cellular interactions restricting the growth of Listeria, without its elimination. CD4 and/or CD8 T cells bring about sterilizing immunity. Macrophages influence the lymphocyte response by way of antigen presentation and also by promoting Th1 differentiation. Thus, elimination of listeria requires a symbiosis between innate immunity and the T-cell system.

Original languageEnglish
Pages (from-to)11-25
Number of pages15
JournalImmunological Reviews
Volume158
DOIs
StatePublished - Aug 1 1997

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