2000 Fiscal Year Final Research Report Summary
Control of Criptosporidium parvum infection in calves by recombinant herpesvirus vector vaccine
| Project/Area Number |
10660297
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied veterinary science
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| Research Institution | Obihiro University of Agriculture and Veterinary Medicine |
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Principal Investigator |
XUAN Xuenan Obihiro University of Agriculture and Veterinary Medicine , Associate Professor, 原虫病研究センター, 助教授 (10292096)
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Noboru Obihiro University of Agriculture and Veterinary Medicine , Assistant Professor, 原虫病研究センター, 講師 (10271751)
IGARASHI Ikuo Obihiro University of Agriculture and Veterinary Medicine , Professor, 原虫病研究センター, 教授 (80159582)
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| Project Period (FY) |
1998 – 2000
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| Keywords | C.parvum / P15 / P23 / Recombinant vaccine / Vaccinia virus / Herpesvirus / 原虫感染防御 / 組換え抗原 |
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| Research Abstract |
In host-parasite interaction, the surface proteins of both host and parasite cells play an important role and the surface antigens of the parasites are therefore logical targets for subunit vaccine development. Several surface antigens, such as P15 and P23 of Cryptosporidium parvum (C.parvum) sporozoites or merozoites have been reported previously. Since the monoclonal antibodies against these antigens can neutralize the C.parvum sporozoites, the antigens were proposed as candidates for development of recombinant vaccine to control the cryptosporidiosis. In the present study, we constructed recombinant vaccinia virus or herpesvirus wich expresses the P15 or P23 of C.parvum and demonstrated that the recombinant P15 and P23 are similar to the native P15 and P23 both in structure and antigenicity. Mice or rabbits inoculated with the recombinant viruses produced high titers of antibodies against C.parvum sporozoites. Our next step will be immunization trails with cows to check the potency of the hyperimmune colostrum to confer effective passive immunity of humans and animals against cryptosporidiosis.
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[Publications] Xuan, X., Zhang, S., Kamio, T., Tsushima, Y., Kamada, T., Nishikawa, Y., Otsuka, H., Karanis, P., Igarashi, I., Nagasawa, H., Fujisaki, K.and Mikami, T.: "Characterization of P15 antigen of Cryptosporidium parvum expressed by a recombinant vaccinia virus."J.Protozool.Res.. 9. 32-40 (1999)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Takashima, Y., Xuan, X., Inoue, N., Nagasawa, H., Matsumoto, Y., Igarashi, I., Fujisaki, K., Mikami, T.and Otsuka, H.: "Construction of the recombinant pseudorabies viruses expressing P23 antigen of Cryptosporidium parvum."J.Protozool.Res.. (Submitted).
Description
「研究成果報告書概要(欧文)」より
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[Publications] Takashima, Y., Xuan, X., Inoue, N., Nagasawa, H., Matsumoto, Y., Igarashi, I., Fujisaki, K., Mikami, T.and Otsuka, H.: "Construction of the recombinant bovine herpesvirus-1 expressing P23 antigen of Cryptosporidium parvum."(In preparation).
Description
「研究成果報告書概要(欧文)」より
