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  • Title: Potential of DNA-mediated vaccination for equine herpesvirus 1.
    Author: Ruitenberg KM, Walker C, Wellington JE, Love DN, Whalley JM.
    Journal: Vet Microbiol; 1999 Aug 16; 68(1-2):35-48. PubMed ID: 10501160.
    Abstract:
    The potential of DNA-mediated immunisation to protect against equine herpesvirus 1 (EHV-1) disease was assessed in a murine model of EHV-1 respiratory infection. Intramuscular injection with DNA encoding the EHV-1 envelope glycoprotein D (gD) in a mammalian expression vector induced a specific antibody response detectable by two weeks and maintained through 23 weeks post injection. Immune responses were proportional to the dose of DNA and a second injection markedly enhanced the antibody response. EHV-1 gD DNA-injected mice developed neutralising antibodies, and a predominance of IgG2a antibodies after the DNA injection was consistent with the generation of a type 1 helper T-cell (Th1) response. Following intranasal challenge with EHV-1, mice immunised with 50 microg of EHV-1 gD DNA were able to clear virus more rapidly from lung tissue and showed reduced lung pathology in comparison with control mice. The data indicate that DNA-mediated immunisation may be a useful strategy for vaccination against EHV-1.
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