Published in:
01-12-2008 | Brief Report
Efficient production of type 2 porcine circovirus-like particles by a recombinant baculovirus
Authors:
Lan-Jun Liu, Takako Suzuki, Hiroshi Tsunemitsu, Michiyo Kataoka, Noriyo Ngata, Naokazu Takeda, Takaji Wakita, Tatsuo Miyamura, Tian-Cheng Li
Published in:
Archives of Virology
|
Issue 12/2008
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Abstract
The capsid protein of PCV2 was expressed by using a recombinant baculovirus with insect Tn5 cells. A large amount of 28-kDa protein was released into the culture medium and self-assembled into PCV2-like particles (PCV2-LPs) with a buoyant density of 1.365 g/cm3 and a diameter of 20 nm. PCV2-LPs were efficiently expressed, yielding 1 mg of purified particles per 107 Tn5 cells. The PCV2-LPs have antigenicity similar to that of authentic PCV2 particles, allowing us to develop a method for sensitively detecting PCV2-specific IgG antibodies. In addition, the PCV2-LPs appeared to be the most promising PCV2 vaccine candidate, by virtue of their potent immunogenicity.