Immunization effect of lipopolysaccharide antigen in conjugation with PLGA nanoparticles as a nanovaccine against Brucella melitensis infection.
2021
Abstract Brucella is an infectious disease with difficult treatment faced with drug resistance and recurrence of infection. Despite advances in the development of effective vaccines against brucellosis infections, there is still a need for more effective vaccine against brucellosis. In this study, we developed a nanovaccine for delivery of lipopolysaccharide Brucella melitensis antigen to the immune system using PLGA nanoparticles to prevent Brucella infection, which is associated with the stimulation of both humoral and cellular immune systems. In particular, we determined the rate of produced immunoglobulines and their functional effectiveness on the immune system by carring out opsonophagocytosis and challenge tests. According to the results, it was determined that PLGA improve the delivery of LPS antigen to the immune system to enhance the production of immunoglobulins levels and their efficiency to remove Brucella bacteria.
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