engleski

Highly attenuated MCMV vector expressing NKG2D ligand RAE-1 gamma provides long-lived memory CD8+T cells with outstanding protective capacity

There is a large number of pathogens for which post-infection acquired immunity does not fully protect against re-infection and disease. Therefore, vaccines which offer superior protection compared to the one following natural infection are needed. We have previously demonstrated that a recombinant CMV expressing a cellular ligand for the NKG2D receptor has tremendous potential for the induction of a potent antiviral immune response in spite of a strong attenuation in vivo. In this study we have used a MCMV vector expressing NKG2D ligand RAE-1gamma and the CD8+ T cell epitope of Listeria monocytogenes and have demonstrated that the expression of NKG2D ligand dramatically enhanced the effectiveness and longevity of epitope-specific CD8+ T cell response, conferring protection against a subsequent challenge infection with Listeria monocytogenes. We believe that a similar approach can be used in CD8+ T cell-based vaccination strategies against multiple human pathogens.

MCMV; NKG2D ligand RAE-1; CD8+T cells

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