Boosting with an adenovirus-based vaccine improves protective efficacy against Venezuelan equine encephalitis virus following DNA vaccination

被引:21
作者
Perkins, SD [1 ]
O'Brien, LM [1 ]
Phillpotts, RJ [1 ]
机构
[1] Def Sci & Technol Lab, Dept Biomed Sci, Salisbury SP4 0JQ, Wilts, England
关键词
DNA vaccine; prime-boost; VEEV; Venezuelan equine encephalitis virus; adenovirus;
D O I
10.1016/j.vaccine.2006.02.020
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
There is a requirement for a vaccine that protects against the alphavirus, Venezuelan equine encephalitis virus (VEEV). Previous work has shown that DNA vaccines encoding structural proteins of VEEV can elicit immune responses and protection against VEEV though this protection is incomplete against airborne VEEV. In this study, we demonstrate that particle-mediated epidermal delivery of a DNA vaccine encoding the E2 glycoprotein of VEEV can be boosted with a mucosally-delivered Ad-based vaccine encoding the same E2 glycoprotein. This results in an improved Th2-type IgG response, an increase in neutralising antibody and a significant increase in protection against airborne VEEV. This indicates that prime-boost may be a suitable immunisation regimen for providing protection against airborne VEEV. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3440 / 3445
页数:6
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