Construction and immunogenicity of recombinant adenovirus expressing the capsid protein of porcine circovirus 2 (PCV2) in mice

Vaccine
Xianwei WangJiarong Xu

Abstract

Porcine circovirus 2 (PCV2) has been implicated as the etiological agent of some diseases, mainly postweaning multisystemic wasting syndrome (PMWS) and porcine dermatitis and nephropathy syndrome (PDNS). The capsid (Cap) protein encoded by the PCV2 ORF2 gene may be an excellent candidate for vaccination. In this study, the Cap protein gene was amplified by PCR, and cloned into the transfer vector pShuttle-CMV. After co-transformation of PmeI-linearized recombinant plasmid pShuttle-CMV-ORF2 and the bone vector pAdEasy-1 into Escherichia coli bacteria strain BJ5183, recombinant plasmid containing Cap protein gene (pAd-ORF2) was obtained and identified with PCR. Upon transfection of PacI-linearized plasmid pAd-ORF2 in 293 cell line, a recombinant adenovirus was obtained and named as rAd-Cap with viral titer of 10(13.0) TCID(50)/ml. The expression of the Cap protein in the 293 cells infected with rAd-Cap was confirmed with specific antibody to PCV2 by Western blotting and IPMA. Mice were inoculated with 10(8), 10(10) and 10(12) TCID(50)/mouse of rAd-Cap and boosted 2 weeks later, and they could generate antibody against PCV2 detected by indirect ELISA, Western blot and neutralizing activity assay. It indicated that the rAd-Cap was ...Continue Reading

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Citations

Sep 6, 2008·Developmental and Comparative Immunology·Kenneth C McCullough, Artur Summerfield
Jan 5, 2012·International Journal of Biological Macromolecules·Ying-Yi WeiShu-Xia Zhang
Sep 3, 2008·Animal Health Research Reviews·Sheela Ramamoorthy, Xiang-Jin Meng

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