Abstract
As most pathogens enter through the mucosa, it is important to develop vaccines that induce mucosal immunity. To this end, we generated a novel adenovirus (Ad) vaccine that displays the σ1 protein from reovirus to target junctional adhesion molecule 1 and sialic acid. Replication-defective Ad5 vectors were modified by replacement of the Ad fiber protein with σ1(T3Dσ1) protein of reovirus T3D in previous work. Ad5 and Ad5-σ1 were compared in mouse models for gene delivery and vaccination to monitor cytokine, antibody, and T-cell responses. The viruses were also tested for the ability to transduce and mature dendritic cells. Ad5-σ1 was 40-fold less efficient at gene delivery in vivo, yet it was capable of inducing equal or greater cellular immune responses and systemic interferon-γ levels than Ad5 after intranasal administration. Despite weaker gross transduction, intranasal administration of Ad5-σ1 produced more green fluorescent protein-positive (GFP) major histocompatibility complex class II (MHC II) cells in the draining lymph nodes, less GFP/MHC II cells in the lungs, and mediated modestly better maturation of dendritic cells in vitro. These data suggest that targeting gene-based vaccination via the σ1 protein may enhance the T-cell immune response, perhaps by skewing immune responses to encoded antigens.
Original language | English (US) |
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Pages (from-to) | 311-319 |
Number of pages | 9 |
Journal | Mucosal Immunology |
Volume | 5 |
Issue number | 3 |
DOIs | |
State | Published - May 2012 |
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology