Immunity conferred by an experimental vaccine based on the recombinant PCV2 Cap protein expressed in Trichoplusia ni-larvae

Eva Pérez-Martín, Silvia Gómez-Sebastián, Jordi M. Argilaguet, Marina Sibila, María Fort, Miquel Nofrarías, Sherry Kurtz, José M. Escribano, Joaquim Segalés, Fernando Rodríguez

Research output: Contribution to journalArticleResearchpeer-review

34 Citations (Scopus)

Abstract

Porcine circovirus type 2 (PCV2) vaccination has been recently included as a measure to control postweaning multisystemic wasting syndrome (PMWS) in the field. Aiming to obtain a more affordable vaccine to be extensively implemented in the field, a highly efficient non-fermentative expression platform based on Trichoplusia ni (T. ni) larvae was used to produce a baculovirus-derived recombinant PCV2 Cap protein (rCap) for vaccine purposes. Vaccination of pigs with rCap induced solid protection against PCV2 experimental infection, inhibiting both the viremia and the viral shedding very efficiently. The protection afforded by the rCap vaccine strongly correlated with the induction of specific humoral immune responses, even in the presence of PCV2-specific maternal immunity, although cellular responses also seemed to play a partial role. In summary, we have shown that rCap expressed in T. ni larvae could be a cost-effective PCV2 vaccine candidate to be tested under field conditions. © 2009 Elsevier Ltd.
Original languageEnglish
Pages (from-to)2340-2349
JournalVaccine
Volume28
DOIs
Publication statusPublished - 8 Mar 2010

Keywords

  • Baculovirus
  • Insect larvae
  • Porcine circovirus type 2
  • Postweaning multisystemic wasting syndrome
  • Vaccine

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