期刊
JOURNAL OF IMMUNOLOGY
卷 173, 期 9, 页码 5349-5354出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.173.9.5349
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CD160 is an Ig-like activating NK cell receptor expressed on the majority of circulating NK cells. This population corresponds to the nonproliferating, highly cytolytic, CD57(dim) CD16(+) subset. CD160 engagement by HLA-C molecules mediates cytotoxic function. In this study, we report that upon specific activation by the physiological ligand HLA-C, or A cross-linking, CD160(+) peripheral blood NK cells produce IFN-gamma, TNF-alpha, and IL-6 This unique CD160-mediated cytokine production differs from the one observed after CD16 engagement whose expression is also restricted to the CD56(dim) cytotoxic NK cell subset. As already reported for the CD160-mediated cytotoxic effector function, CD160-mediated cytokine production by peripheral blood-NK cells is negatively controlled by the killer Ig-like receptor CD158b. Thus, the CD160 receptor represents a unique triggering surface molecule expressed by cytotoxic NK cells that participates in the inflammatory response and determines the type of subsequent specific immunity.
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