Volume 9, Issue 1 (3-2021)                   JoMMID 2021, 9(1): 38-45 | Back to browse issues page

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Allahyari M, amiri S, Vatanara A, Golkar M. Protection and Immune Responses Elicited by rSAG1-PLGA Nanoparticles in C57BL/6 Against Toxoplasma gondii. JoMMID. 2021; 9 (1) :38-45
URL: http://jommid.pasteur.ac.ir/article-1-340-en.html
Recombinant Protein Production Department, Production and Research Complex, Pasteur Institute of Iran, Karaj, Iran.
Abstract:   (119 Views)
Introduction: This study aimed to evaluate rSAG1-PLGA efficacy as a particulate vaccine in conferring protection against Toxoplasma gondii infection in C57BL/6 mice. In light of our previous studies, we studied mice genotype role in eliciting immune responses by rSAG1-PLGA nanoparticles in this study. Methods: Poly (DL-lactide-co-glycolide) (PLGA) nanoparticles loaded by rSAG1 as a subunit vaccine were prepared, and C57BL/6 mice were subcutaneously immunized twice at a 3-week interval by rSAG1-PLGA, soluble rSAG1, blank PLGA, and one group kept unvaccinated. The characteristics of PLGA nanoparticles, the amounts of produced IFN-γ, IL-10, specific anti-ToxoplasmaIgGs, and the conferred protection against infection by T. gondii RH tachyzoite were assessed. Results: rSAG1-PLGA nanoparticles shared a z-average of about 450nm with negative Zeta potential. Compared with the negative control group, the mice vaccinated with rSAG1-PLGA nanoparticles produced significantly higher amounts of IFN-γ, specific anti-T. gondii IgG antibodies and higher titer of IgG2a, which resulted in longer survival times. Conclusion: The efficiency of rSAG1-PLGA nanoparticles in inducing humoral and cellular responses and consequently partial protection against acute toxoplasmosis in C57BL/6 was confirmed.
Full-Text [PDF 4706 kb]   (21 Downloads)    
Type of Study: Original article | Subject: Immune responses, deficiencies and vaccine candidates
Received: 2021/02/23 | Accepted: 2021/03/20 | Published: 2021/04/27

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