A novel baculovirus vector shows efficient gene delivery of modified porcine reproductive and respiratory syndrome virus antigens and elicits specific immune response.

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

Vaccine

journal_title

Vaccine

authors

Karuppannan AK,Qiang J,Chang CC,Kwang J

doi

10.1016/j.vaccine.2013.08.101

subject

Has Abstract

pub_date

2013-11-04 00:00:00

pages

5471-8

issue

46

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(13)01213-9

journal_volume

31

pub_type

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