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KMID : 0380420230470030125
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Journal of Prventive Veterinary Medicine
2023 Volume.47 No. 3 p.125 ~ p.130
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Expression of the VP2 protein of canine parvovirus 2b using a baculovirus expression system
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Kim Min-Ji
Lim Seong-In
Kwon Mi-Jung
Kim Min-Ji
Lim Eui-Hyeon
Hyun Bang-Hun
Lee Yoon-Hee
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Abstract
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Canine parvovirus-2 (CPV-2) has been reported worldwide as a major pathogen associated with acute hemorrhagic enteritis. The disease is a major infectious cause of death, particularly in young dogs. The earliest type of CPV-2 was replaced with three main subspecies, CPV-2a, CPV-2b, and CPV-2c, within a few years. Vaccination is carried out regularly, but the emergence of antigenic variants and the influence of maternal antibodies have limited the efficacy of commercial vaccines. New vaccines, such as the subunit vaccine, have been developed for alternative, safe, and effective vaccination. The baculovirus expression vector system (BEVS) is an excellent eukaryotic expression system with a high-level expression of foreign proteins and the ability of post-translational modification. Therefore, it is used widely to produce recombinant protein and subunit vaccines. In this study, the VP2 protein of CPV-2b cloned in the gateway vector system was generated using a baculovirus expression system in Spodoptera frugiperda (SF9) insect cells. Hemagglutination assay (HA) titers (24) were obtained, and the expression was detected in 6-His tagged VP2 and monoclonal antibody (mAb) against CPV-2 by western blotting. The VP2 protein of CPV-2b expressed in this study may provide a basis for a clinical diagnosis and vaccination applications for CPV-2.
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KEYWORD
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Canine parvovirus 2b, VP2, Gateway, SF9 cell, Baculovirus expression system
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