First Author | Trsan T | Year | 2013 |
Journal | Proc Natl Acad Sci U S A | Volume | 110 |
Issue | 41 | Pages | 16550-5 |
PubMed ID | 24052528 | Mgi Jnum | J:202322 |
Mgi Id | MGI:5518486 | Doi | 10.1073/pnas.1310215110 |
Citation | Trsan T, et al. (2013) Superior induction and maintenance of protective CD8 T cells in mice infected with mouse cytomegalovirus vector expressing RAE-1gamma. Proc Natl Acad Sci U S A 110(41):16550-5 |
abstractText | Due to a unique pattern of CD8 T-cell response induced by cytomegaloviruses (CMVs), live attenuated CMVs are attractive candidates for vaccine vectors for a number of clinically relevant infections and tumors. NKG2D is one of the most important activating NK cell receptors that plays a role in costimulation of CD8 T cells. Here we demonstrate that the expression of CD8 T-cell epitope of Listeria monocytogenes by a recombinant mouse CMV (MCMV) expressing the NKG2D ligand retinoic acid early-inducible protein 1-gamma (RAE-1gamma) dramatically enhanced the effectiveness and longevity of epitope-specific CD8 T-cell response and conferred protection against a subsequent challenge infection with Listeria monocytogenes. Unexpectedly, the attenuated growth in vivo of the CMV vector expressing RAE-1gamma and its capacity to enhance specific CD8 T-cell response were preserved even in mice lacking NKG2D, implying additional immune function for RAE-1gamma beyond engagement of NKG2D. Thus, vectors expressing RAE-1gamma represent a promising approach in the development of CD8 T-cell-based vaccines. |