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Zhang W, Sano N, Kataoka M, Ami Y, Suzaki Y, Wakita T, Ikeda H, Li TC. Virus-like particles of porcine bocavirus generated by recombinant baculoviruses can be applied to sero-epidemic studies. Virus Res 2016; 217:85-91. [PMID: 26959654 DOI: 10.1016/j.virusres.2016.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/27/2016] [Accepted: 03/03/2016] [Indexed: 01/09/2023]
Abstract
Porcine bocaviruses (PBoVs), new members of the Bocavirus genus, have been identified in swine worldwide. However, the antigenicity and epidemiology of PBoVs are still unclear. Here we used a recombinant baculovirus expression system to express the main capsid protein VP2 of Japan strain JY31b in insect Tn5 cells, and successfully produced the virus-like particles of PBoV (PBoV-LPs). The diameter and densities of the PBoV-LPs were estimated to be 30nm and 1.300g/cm(3), respectively, which were similar to the values for the native virion of PBoV. Antigenic analysis demonstrated that the PBoV-LPs were not cross-reactive with porcine circovirus 2, but were cross-reactive with human bocavirus 1, 2, 3 and 4. An ELISA for detection of anti-PBoV IgG antibodies was established using PBoV-LPs as antigen, which proved to be useful for monitoring PBoV infection in both swine and wild boars. The preliminary epidemiology research showed that 90.7% of pigs and 59.5% of wild boars were positive for the anti-PBoV-IgG, suggesting that both species were also widely infected with PBoV. The seven PBoV strains detected in wild boars separated into four subgroups, demonstrating the genetic diversity of PBoV.
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Affiliation(s)
- Wenjing Zhang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan 250012, China; Blood Group Reference and Research Laboratory, Blood Center of Shandong Province, East Shanshi Road 22, Jinan, Shandong, China
| | - Natsuha Sano
- Laboratory of Veterinary Hygiene, Graduate School of Veterinary Medicine and Life Science, Nippon Veterinary and Life Science University, Kyonan-cho 1-7-1, Musashino, Tokyo 180-8602, Japan
| | - Michiyo Kataoka
- Department of Pathology, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashi-murayama, Tokyo 208-0011, Japan
| | - Yasushi Ami
- Division of Experimental Animals Research, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashi-murayama, Tokyo 208-0011, Japan
| | - Yuriko Suzaki
- Division of Experimental Animals Research, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashi-murayama, Tokyo 208-0011, Japan
| | - Takaji Wakita
- Department of Virology II, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashi-murayama, Tokyo 208-0011, Japan
| | - Hidetoshi Ikeda
- Laboratory of Veterinary Hygiene, Graduate School of Veterinary Medicine and Life Science, Nippon Veterinary and Life Science University, Kyonan-cho 1-7-1, Musashino, Tokyo 180-8602, Japan
| | - Tian-Cheng Li
- Department of Virology II, National Institute of Infectious Diseases, Gakuen 4-7-1, Musashi-murayama, Tokyo 208-0011, Japan.
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Yeast-generated virus-like particles as antigens for detection of human bocavirus 1–4 specific antibodies in human serum. Appl Microbiol Biotechnol 2016; 100:4935-46. [DOI: 10.1007/s00253-016-7336-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/14/2016] [Accepted: 01/17/2016] [Indexed: 12/22/2022]
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