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Recombinant baculovirus expressing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) immunogen gene and preparation method and application thereof

A technology of recombinant baculovirus and immunogen, applied in application, gene therapy, antiviral agent, etc., can solve the problems of no practical and effective methods, immunogenicity and safety limitations, and achieve good genetic stability

Inactive Publication Date: 2010-08-04
NORTHWEST A & F UNIV
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Problems solved by technology

[0005] PRRSV is an important virus that seriously threatens the development of the pig industry. At present, there is no practical and effective method for the control of PRRS disease. The vaccines for preventing PRRS mainly include inactivated vaccines and attenuated vaccines. However, due to immunogenicity and safety Issues such as sexuality are restricted

Method used

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  • Recombinant baculovirus expressing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) immunogen gene and preparation method and application thereof
  • Recombinant baculovirus expressing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) immunogen gene and preparation method and application thereof
  • Recombinant baculovirus expressing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) immunogen gene and preparation method and application thereof

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[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

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Abstract

The invention discloses a recombinant baculovirus expressing Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) immunogen genes and a preparation method and application thereof, particularly relates to a recombinant baculovirus comprising a sequence shown as SEQ ID NO.1 and displaying structural proteins GP3 of the PRRSV on the surface. The preparation method comprises steps of utilizing the recombinant baculovirus to inoculate insect cells, culturing for 48-72h, collecting infection cells, carrying out freeze thawing at 40DEG C below zero / 37DEG C, centrifuging, taking supernate to test virus PFU and adjusting the titer of the virus to 109PFU / ml to obtain a safe and effective gene engineered subunit vaccine for preventing PRRS.

Description

technical field [0001] The invention relates to a recombinant baculovirus expressing PRRSV immunogen gene and its preparation and application. Background technique [0002] PRRS (Porcine Reproductive and Respiratory Syndrome) is one of the severe infectious diseases of pigs caused by PRRSV (Porcine Reproductive and Respiratory Syndrome Virus). It is listed as a B-type animal infectious disease by the International Veterinary Bureau, mainly causing reproductive disorders in sows (such as abortion, premature birth, stillbirth, mummified fetus) and respiratory symptoms in piglets. [0003] There are currently two serotypes of PRRS occurring in the world: the European type and the American type. So far only the American type is popular in our country. Because PRRS mainly causes sow reproductive barriers, it has caused huge economic losses to my country's pig industry. [0004] PRRSV belongs to the family Arteriviridae and the genus Arterivirus, and is a single-stranded positi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N7/01C12N15/40C12N15/866A61K48/00A61K39/12A61P31/14
Inventor 许信刚童德文张琪
Owner NORTHWEST A & F UNIV
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