Clinical and Experimental Vaccine Research

  • 제13권2호
  • /
  • Pages.146-154
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  • 2024
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  • 2287-3651(pISSN)
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  • 2287-366X(eISSN)
대한백신학회 (The Korean Vaccine Society)
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Immunoinformatics studies and design of a novel multi-epitope peptide vaccine against Toxoplasma gondii based on calcium-dependent protein kinases antigens through an in-silico analysis

  • Ali Dalir Ghaffari (Department of Parasitology and Mycology, Faculty of Medicine, Shahed University) ;
  • Fardin Rahimi (Department of Medical biotechnology, Faculty of Medicine, Shahed University)
  • 투고 : 2024.01.31
  • 심사 : 2024.03.05
  • 발행 : 2024.04.30
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초록

Purpose: Infection by the intracellular apicomplexan parasite Toxoplasma gondii has serious clinical consequences in humans and veterinarians around the world. Although about a third of the world's population is infected with T. gondii, there is still no effective vaccine against this disease. The aim of this study was to develop and evaluate a multimeric vaccine against T. gondii using the proteins calcium-dependent protein kinase (CDPK)1, CDPK2, CDPK3, and CDPK5. Materials and Methods: Top-ranked major histocompatibility complex (MHC)-I and MHC-II binding as well as shared, immunodominant linear B-cell epitopes were predicted and linked using appropriate linkers. Moreover, the 50S ribosomal protein L7/L12 (adjuvant) was mixed with the construct's N-terminal to increase the immunogenicity. Then, the vaccine's physicochemical characteristics, antigenicity, allergenicity, secondary and tertiary structure were predicted. Results: The finally-engineered chimeric vaccine had a length of 680 amino acids with a molecular weight of 74.66 kDa. Analyses of immunogenicity, allergenicity, and multiple physiochemical parameters indicated that the constructed vaccine candidate was soluble, non-allergenic, and immunogenic, making it compatible with humans and hence, a potentially viable and safe vaccine candidate against T. gondii parasite. Conclusion: In silico, the vaccine construct was able to trigger primary immune responses. However, further laboratory studies are needed to confirm its effectiveness and safety.

키워드

과제정보

This study was financially supported by the Shahed Faculty of Medical Sciences, Tehran, Iran.

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