First Author | Probst HC | Year | 2005 |
Journal | J Immunol | Volume | 174 |
Issue | 7 | Pages | 3920-4 |
PubMed ID | 15778347 | Mgi Jnum | J:97970 |
Mgi Id | MGI:3576831 | Doi | 10.4049/jimmunol.174.7.3920 |
Citation | Probst HC, et al. (2005) Priming of CTLs by lymphocytic choriomeningitis virus depends on dendritic cells. J Immunol 174(7):3920-4 |
abstractText | Appropriate activation of naive CD8(+) T cells depends on the coordinated interaction of these cells with professional APC that present antigenic peptides in the context of MHC class I molecules. It is accepted that dendritic cells (DC) are efficient in activating naive T cells and are unique in their capacity to prime CD8(+) T cell responses against exogenous cell-associated Ags. Nevertheless, it is unclear whether epitopes, derived from endogenously synthesized proteins and presented by MHC class I molecules on the surface of other APC including B cells and macrophages, can activate naive CD8(+) T cells in vivo. By infecting transgenic CD11c-DTR/GFP mice that allow conditional depletion of DC with lymphocytic choriomeningitis virus (LCMV), which infects all types of APC and elicits a vigorous CTL response, we unambiguously show that priming of LCMV-specific CD8(+) T cells is crucially dependent on DC, despite ample presence of LCMV-infected macrophages and B cells in secondary lymphoid organs. |