High protection of mice against Brucella abortus by oral immunization with recombinant probiotic Lactobacillus casei vector vaccine, expressing the outer membrane protein OMP19 of Brucella species.

08:00 EDT 19th March 2020 | BioPortfolio

Summary of "High protection of mice against Brucella abortus by oral immunization with recombinant probiotic Lactobacillus casei vector vaccine, expressing the outer membrane protein OMP19 of Brucella species."

Brucellosis is a zoonotic disease threatening the public health and hindering the trade of animals and their products, which has a negative impact on the economic development of a country. Vaccination is the most effective way to control brucellosis. The recombinant vector vaccines are promising candidates for immunization in humans and animals. In this study, the gene encoding OMP19 antigen was primarily amplified and cloned into an expression vector called pT1NX, and then transformed to L. casei cell via electroporation technique. The expression was confirmed using specific antibody against the recombinant protein via immunological screening tests such as western blot and immunofluorescence assay. Finally, recombinant L. casei was orally fed to mice and the results were further recorded, indicating that the mice group which received OMP19 through L. casei based vaccine represented a very good general and mucosal immune responses protective against challenges with virulent B. abortus 544 strain compared with negative control recipient groups. Therefore, the vaccine produced in this research plan can be a very good candidate for protection against brucellosis.


Journal Details

This article was published in the following journal.

Name: Comparative immunology, microbiology and infectious diseases
ISSN: 1878-1667
Pages: 101470


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Medical and Biotech [MESH] Definitions

A bacterial vaccine for the prevention of brucellosis in man and animal. Brucella abortus vaccine is used for the immunization of cattle, sheep, and goats.

A species of the genus BRUCELLA whose natural hosts are sheep and goats. Other mammals, including humans, may be infected. In general, these organisms tend to be more virulent for laboratory animals than BRUCELLA ABORTUS and may cause fatal infections.

A disease of cattle caused by bacteria of the genus BRUCELLA leading to abortion in late pregnancy. BRUCELLA ABORTUS is the primary infective agent.

A species of the genus BRUCELLA whose natural hosts are cattle and other bovidae. Abortion and placentitis are frequently produced in the pregnant animal. Other mammals, including humans, may be infected.

Any immunization following a primary immunization and involving exposure to the same or a closely related antigen.

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