Immunogenicity evaluating of the SLNs-alginate conjugate against Pseudomonas aeruginosa.
2021
Abstract P. aeruginosa is of particular importance due to its numerous pathogens and the spread of its multidrug-resistant strains around the world. Hence there is a need to develop an effective vaccine to prevent the diseases with P. aeruginosa. The aim of present study was to evaluate the immunogenicity of alginate (Alg) antigen in conjugation with SLN as a candidate for nanovaccine against P. aeruginosa in mouse model. Alginate is a weak immunogen, but the immune responses produced by alginate are effective in killing Pseudomonas bacteria. To increase the immunogenicity of alginate, SLN was used that is useful in drug delivery and can boost prolonged effectiveness. The results of ELISA and opsonophagocytosis tests showed that Alg-SLN conjugate has a better ability to stimulate the immune system to produce more immunoglobulins with better performance compared to alginate antigen alone. The challenge test also demonstrated that the Alg-SLN treated mice showed a higher level of immunity than the mice treated with pure alginate against infections caused by P. aeruginosa. Overally the findings showed the efficacy of new prepared vaccine to induce immunogenicity, and therefore it can be considered as a candidate for a strong vaccine against P. aeruginosa.
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