| Literature DB >> 20139992 |
Lukas Flatz1, Ahmed N Hegazy, Andreas Bergthaler, Admar Verschoor, Christina Claus, Marylise Fernandez, Luca Gattinoni, Susan Johnson, Florian Kreppel, Stefan Kochanek, Maries van den Broek, Andreas Radbruch, Frédéric Lévy, Paul-Henri Lambert, Claire-Anne Siegrist, Nicholas P Restifo, Max Löhning, Adrian F Ochsenbein, Gary J Nabel, Daniel D Pinschewer.
Abstract
Lymphocytic choriomeningitis virus (LCMV) exhibits natural tropism for dendritic cells and represents the prototypic infection that elicits protective CD8(+) T cell (cytotoxic T lymphocyte (CTL)) immunity. Here we have harnessed the immunobiology of this arenavirus for vaccine delivery. By using producer cells constitutively synthesizing the viral glycoprotein (GP), it was possible to replace the gene encoding LCMV GP with vaccine antigens to create replication-defective vaccine vectors. These rLCMV vaccines elicited CTL responses that were equivalent to or greater than those elicited by recombinant adenovirus 5 or recombinant vaccinia virus in their magnitude and cytokine profiles, and they exhibited more effective protection in several models. In contrast to recombinant adenovirus 5, rLCMV failed to elicit vector-specific antibody immunity, which facilitated re-administration of the same vector for booster vaccination. In addition, rLCMV elicited T helper type 1 CD4+ T cell responses and protective neutralizing antibodies to vaccine antigens. These features, together with low seroprevalence in humans, suggest that rLCMV may show utility as a vaccine platform against infectious diseases and cancer.Entities:
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Year: 2010 PMID： 20139992 PMCID： PMC3247638 DOI： 10.1038/nm.2104
Source DB: PubMed Journal: Nat Med ISSN： 1078-8956 Impact factor: 53.440