| Literature DB >> 22021614 |
Benyamin Rosental1, Michael Brusilovsky, Uzi Hadad, Dafna Oz, Michael Y Appel, Fabian Afergan, Rami Yossef, Lior Ann Rosenberg, Amir Aharoni, Adelheid Cerwenka, Kerry S Campbell, Alex Braiman, Angel Porgador.
Abstract
NK cells play an important role in the early immune response to cancer. The NKp44 activating receptor is the only natural cytotoxicity receptor that is expressed exclusively by primate NK cells, yet its cellular ligands remain largely unknown. Proliferating cell nuclear Ag (PCNA) is overexpressed in cancer cells. In this study, we show that the NKp44 receptor recognizes PCNA. Their interaction inhibits NK cell function through NKp44/ITIM. The physical interaction of NKp44 and PCNA is enabled by recruitment of target cell PCNA to the NK immunological synapse. We demonstrate that PCNA promotes cancer survival by immune evasion through inhibition of NKp44-mediated NK cell attack.Entities:
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Year: 2011 PMID: 22021614 PMCID: PMC3269963 DOI: 10.4049/jimmunol.1102267
Source DB: PubMed Journal: J Immunol ISSN: 0022-1767 Impact factor: 5.422