Rae1 and H60 ligands of the NKG2D receptor stimulate tumour immunity

Andreas Diefenbach, Eric R. Jensen, Amanda M. Jamieson and David H. Raulet ()
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Andreas Diefenbach: 485 Life Sciences Addition, University of California
Eric R. Jensen: 485 Life Sciences Addition, University of California
Amanda M. Jamieson: 485 Life Sciences Addition, University of California
David H. Raulet: 485 Life Sciences Addition, University of California

Nature, 2001, vol. 413, issue 6852, 165-171

Abstract: Abstract Natural killer (NK) cells attack many tumour cell lines, and are thought to have a critical role in anti-tumour immunity1,2,3,4,5,6,7; however, the interaction between NK cells and tumour targets is poorly understood. The stimulatory lectin-like NKG2D receptor8,9,10,11,12,13 is expressed by NK cells, activated CD8+ T cells and by activated macrophages in mice11. Several distinct cell-surface ligands that are related to class I major histocompatibility complex molecules have been identified11,12,13,14, some of which are expressed at high levels by tumour cells but not by normal cells in adults11,13,15,16. However, no direct evidence links the expression of these ‘induced self’ ligands with tumour cell rejection. Here we demonstrate that ectopic expression of the murine NKG2D ligands Rae1β or H60 in several tumour cell lines results in potent rejection of the tumour cells by syngeneic mice. Rejection is mediated by NK cells and/or CD8+ T cells. The ligand-expressing tumour cells induce potent priming of cytotoxic T cells and sensitization of NK cells in vivo. Mice that are exposed to live or irradiated tumour cells expressing Rae1 or H60 are specifically immune to subsequent challenge with tumour cells that lack NKG2D ligands, suggesting application of the ligands in the design of tumour vaccines.

Date: 2001
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DOI: 10.1038/35093109

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