Abstract:
:Porcine reproductive and respiratory syndrome (PRRS) is an economically devastating epizootic of porcine species. Current vaccines are inadequate to control the disease burden and outbreaks in the field. We report a novel baculovirus vaccine vector with White spot syndrome virus immediate early 1 shuttle promoter, with strong activity in both insect cells and mammalian cells, for immunization against PRRSV. The insect cell cultured baculovirus vector produces PRRSV envelope glycoproteins ORF2a, ORF3, ORF4 and ORF5, which are similar to the antigens in the infectious PRRS virion, and these antigens are stably incorporated on the surface of the baculovirus. Further, the baculovirus vector efficiently transduces these antigens in cells of porcine origin, thereby simulating a live infection. The baculovirus vectored PRRSV antigens, upon inoculation in mice, elicits robust neutralizing antibodies against the infective PRRS virus. Further, the experiments indicate that hitherto under emphasized ORF2a and ORF4 are important target antigens for neutralizing PRRSV infectivity.
journal_name
Vaccinejournal_title
Vaccineauthors
Karuppannan AK,Qiang J,Chang CC,Kwang Jdoi
10.1016/j.vaccine.2013.08.101subject
Has Abstractpub_date
2013-11-04 00:00:00pages
5471-8issue
46eissn
0264-410Xissn
1873-2518pii
S0264-410X(13)01213-9journal_volume
31pub_type
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