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Characterization of a multi-epitope peptide with selective MHC-binding capabilities encapsulated in PLGA nanoparticles as a novel vaccine candidate against Toxoplasma gondii infection
Abstract
No effective human vaccine against Toxoplasma gondii (T. gondii) has yet been developed; however, a protective vaccine using immunogenic peptides in a safe delivery vehicle system offers promise. Here, we employed bioinformatics to design a multimeric recombinant T. gondii vaccine using predicted T and B cell epitopes of SAG1, AMA1, ROP2, and GRA4 proteins based on their binding capabilities to common major histocompatibility complex (MHC) molecules. Furthermore, we encapsulated the expressed protein in poly lactic-co-glycolic acid (PLGA) nanoparticles as a delivery vehicle and also used alum as an adjuvant to determine the vaccine potency of this multimeric antigen. BALB/c mice were vaccinated and then challenged with T. gondii RH strain, and the survival rate and cytokine profiles were studied. Mice vaccinated with the multi-epitope-based vaccine, both with and without PLGA, had greater Th1 immune responses, survival rates, specific antibody titers, and IFN-γ and IL-2 levels than controls, while the alum-adsorbed vaccine stimulated a Th2-type humoral immune response.
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PLGA NPs can inhibit protein degradation and prolong the release of the protein.
“PLGA NPs can inhibit protein degradation and prolong the release of the protein (Roozbehani et al., 2018).”
From Protective efficacy of Toxoplasma gondii GRA12 or GRA7 recombinant proteins encapsulated in PLGA nanoparticles against acute Toxoplasma gondii infection in mice (2023) · cites this paper as Roozbehani et al., 2018
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Advances in Toxoplasma gondii vaccines: current strategies and challenges for vaccine development
Chu, K.-B., & Quan, F.-S. (2021) · Vaccines · doi:10.3390/vaccines9050413 · Cited by 92
Sun, H.-C., Deng, P.-M., Fu, Y., Deng, J.-H., Xie, R.-H., Huang, J., Qi, M., & Shi, T.-Y. (2023) · Frontiers in Cellular and Infection Microbiology · doi:10.3389/fcimb.2023.1209755 · Cited by 22
Metadata
- Authors
- Roozbehani, M., Falak, R., Mohammadi, M., Hemphill, A., Razmjou, E., Meamar, A. R., Masoori, L., Khoshmirsafa, M., Moradi, M., & Gharavi, M. J.
- Affiliations
- Iran University of Medical Sciences (IR)
- Bushehr University of Medical Sciences (IR)
- University of Bern (CH)
- Corresponding author
- Razmjou, Elham
- Gharavi, Mohammad Javad
- ORCID
- Venue
- Vaccine
- Publisher
- Elsevier BV
- Published
- 2018-10
- Volume
- 36
- Issue
- 41
- Pages
- 6124-6132
- ISSN
- 0264-410X (ISSN-L)
- OpenAlex
- W2888923518
- Cited by
- 54
- References
- 0
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 9 · 2023: 4 · 2022: 5 · 2021: 16 · 2020: 9 · 2019: 6
- FWCI
- 6.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Vaccine (publishedVersion)
- PubMed (publishedVersion)
- BORIS (University Library Bern) (submittedVersion)
- Funders
- Iran University of Medical Sciences (9221577201)
- Topics
- Life Sciences › Immunology and Microbiology › Parasitology › Toxoplasma gondii Research Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
- Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
- Keywords
- Toxoplasma gondii, toxoplasmosis vaccine, multi-epitope peptide, MHC-binding peptides, PLGA nanoparticles, vaccine delivery, SAG1, AMA1, ROP2, T cell epitopes, B-cell epitopes, alum adjuvant, Th1 response, interferon-gamma, interleukin-2, cytokine profile
- MeSH terms
- Polylactic Acid-Polyglycolic Acid Copolymer, Adjuvants, Immunologic, Animals, Antibodies, Protozoan, Antigens, Protozoan, Female, Interferon-gamma, Interleukin-2, Mice, Inbred BALB C, Peptides, Toxoplasma, Protozoan Proteins, Protozoan Vaccines, Computational Biology, Mice, Nanoparticles, Immunity, Humoral
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