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Arch Virol. 2001;146(9):1681-91.

Antigenic and immunogenic properties of a chimera of two immunodominant African swine fever virus proteins.

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Departamento de Biotecnología, INIA, Madrid, Spain.


A chimera of the two immunodominant African swine fever (ASF) virus proteins p54 and p30 was constructed by insertion of the gene CP204L into a Not I restriction site of E183L gene. The resulting chimeric protein p54/30, expressed by a recombinant baculovirus in insect cells and in Trichoplusia ni larvae, retained antigenic determinants present in both proteins and reacted in Western blot with a collection of sera from inapparent ASF virus carrier pigs. Remarkably, pigs immunized with the chimeric protein developed neutralizing antibodies and survived the challenge with a virulent African swine fever virus, presenting a reduction of about two logs in maximum viremia titers with respect to control pigs. In conclusion, this study revealed that the constructed chimeric protein may have utility as a serological diagnostic reagent and for further immunological studies that may provide new insights on mechanisms of protective immunity to ASFV.

[Indexed for MEDLINE]

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