Journal
VACCINE
Volume 29, Issue 4, Pages 813-820Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2010.11.009
Keywords
Western equine encephalitis virus; E1 envelope protein; Vaccine
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Western equine encephalitis virus (WEEV) is a mosquito-borne RNA virus which causes lethal infection in humans and equines. There are no commercial vaccines or anti-WEEV drugs available for humans. We used replication-defective, human adenovirus serotype-5 (HAd5) as a delivery vector for developing WEEV vaccine. Our previous study found delivery of both E1 and E2 envelope proteins of WEEV by HAd5 vector offers complete protection against lethal challenge of WEEV. In this paper, we constructed a HAd5-vectored El vaccine, Ad5-E1. Mice given single-dose vaccination of Ad5-E1 were completely protected against both homologous and heterologous WEEV strains. The protection was rapid, which was achieved as early as day 7 after vaccination. In addition, Ad5-E1 induced a strong WEEV-specific T cell response. Our data suggest El is a potential target for developing single-dose, fast-acting, HAd5-vectored vaccine for WEEV. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
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