Abstract:
:Swine influenza virus (SIV) is not only an important respiratory pathogen in pigs but also a potent threat to human health. Although immunization with recombinant poxviruses expressing protective antigens as vaccines has been widely used for against many infectious diseases, development of recombinant swinepox virus (rSPV) vector for the purpose has been less successful. Here, we report the construction of a recombinant swinepox virus (rSPV-HA1) expressing hemagglutinin (HA1) of H1N1 SIV. Immune responses and protection efficacy of the vaccination vector were evaluated in both the mouse model and the natural host: pig. Prime and boost inoculations of rSPV-HA1 yielded high levels of neutralization antibody against SIV and elicited potent H1N1 SIV-specific IFN-γ response from T-lymphocytes. Complete protection of pigs against H1N1 SIV challenge was observed. No pigs showed evident systemic and local reactions to the vaccine and no SIV shedding was detected from pigs vaccinated with rSPV-HA1 after challenge. Our data demonstrated that the recombinant swinepox virus encoding HA1 of SIV H1N1 may serve as a promising SIV vaccine for protection against SIV infection.
journal_name
Vaccinejournal_title
Vaccineauthors
Xu J,Huang D,Liu S,Lin H,Zhu H,Liu B,Lu Cdoi
10.1016/j.vaccine.2012.02.028subject
Has Abstractpub_date
2012-04-26 00:00:00pages
3119-25issue
20eissn
0264-410Xissn
1873-2518pii
S0264-410X(12)00211-3journal_volume
30pub_type
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