Production of biologically active feline interferon beta in insect larvae using a recombinant baculovirus.

ABSTRACT: Feline interferon beta is a cytokine that belongs to the type I IFN family, with antitumor, antiviral and immunomodulatory functions. In this work, recombinant feline interferon beta (rFeIFNβ) was expressed in insect larvae that constitute important agronomic plagues. rFeIFNβ accumulated in the hemolymph of Spodoptera frugiperda larvae infected with recombinant baculovirus and was purified by Blue-Sepharose chromatography directly from larval homogenates on day 4 post-infection. rFeIFNβ was recovered after purification with a specific activity of 1 × 10⁶ IU mg^-1. By this method, we obtained 8.9 × 10⁴ IU of purified rFeIFNβ per larva. The product was biologically active in vitro, with an antiviral activity of 9.5 × 10⁴ IU mL^-1, a

SUBMITTER: Arregui MB 

PROVIDER: S-EPMC6063813 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature