Fishes infectious spleen and kidney necrosis virus gene engineering vaccine and preparation method thereof

Abstract

The present invention proposes a fish infectious spleen-kidney necrosis virus genetic engineering vaccine and a preparation method thereof. The genetic engineering vaccine proposed by the present invention contains two gene recombinant protein antigens protein-24 and protein-50, which are respectively screened from The two open reading frames ORF24 and ORF50 in the ISKNV genome were cloned, recombinant plasmids were prepared, and recombinant proteins were expressed. The vaccine is a recombinant protein vaccine that can inhibit the infection of infectious spleen and kidney necrosis virus to fish, so that aquatic fish can grow healthily, reduce the loss of aquaculture in terms of disease, increase aquatic production and efficiency, and avoid DNA vaccines The existing disadvantages.

Description

technical field [0001] The invention belongs to the field of biological genetic engineering, and in particular relates to a fish infectious spleen and kidney necrosis virus (ISKNV) genetic engineering vaccine and a preparation method thereof. Background technique [0002] With the continuous development of my country's aquaculture industry, various aquaculture areas and aquaculture densities continue to increase. At the same time, improper management techniques in aquaculture make the aquaculture water environment deteriorating day by day, and various diseases frequently break out. Among the many diseases reported so far, one of the main causes of serious economic losses to fish farming is viral diseases. Among them, Infectious Spleen and Kidney Necrosis Virus (ISKNV, Infectious Spleen and Kidney Necrosis Virus) is one of the main viruses that cause a large number of fish deaths. [0003] The diameter of the mature virion of this virus is 150nm. Infected cells are swollen,...

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Problems solved by technology

In theory, the introduction of exogenous DNA into sensitive cells in the body may cause tumor cell formation by inserting and activating oncogenes, inserting and activating host cell proto-oncogenes or inserting and inactivating suppressor genes. Although this probability is very low; (2) exogenous Chronic expression of antigens may lead to adverse immunopathological responses; (3) use of genes encoding cytokines or co-stimulatory molecules may have additional hazards; (4) possible formation of antibodies against injected DNA and adverse autoimmune disorders; (5) The expressed antigen may produce unexpected biological activity

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