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NK-DC interaction: on the usefulness of auto-aggression
Emanuela Marcenaro1, Bruna Ferranti, Alessandro Moretta
1Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Via L.B. Alberti 2, 16132, Italy.
Abstract:
In recent years a number of studies have highlighted the novel concept that the actual role of natural killer (NK) cells is not only confined to the destruction of virus-infected cells or tumors. Indeed NK cells, by interacting with myeloid DCs during the early phases of inflammation, appear to play a crucial role in shaping both innate immune reactions (within inflamed peripheral tissues) and adaptive immune responses (in secondary lymphoid compartments). Interestingly, this novel function assigned to NK cells is essentially mediated through the aggression of normal immature myeloid DCs. Only DCs undergoing optimal maturation become refractory to NK cell killing and will obtain the permission to prime Th1 cells after migration to lymph nodes.
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