articleProceedings of the National Academy of SciencesMar 19, 2003BRONZE OA

Transforming growth factor β1 inhibits expression of NKp30 and NKG2D receptors: Consequences for the NK-mediated killing of dendritic cells

Istituto Giannina Gaslini · University of Genoa

PubMed
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Abstract

The surface density of the triggering receptors responsible for the natural killer (NK)-mediated cytotoxicity is crucial for the ability of NK cells to kill susceptible target cells. In this study, we show that transforming growth factor beta1 (TGFbeta1) down-regulates the surface expression of NKp30 and in part of NKG2D but not that of other triggering receptors such as NKp46. The TGFbeta1-mediated inhibition of NKp30 surface expression reflects gene regulation at the transcriptional level. NKp30 has been shown to represent the major receptor involved in the NK-mediated killing of dendritic cells. Accordingly, the TGFbeta1-dependent down-regulation of NKp30 expression profoundly inhibited the NK-mediated…

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