In silico design and immunoinformatics analysis of a chimeric vaccine construct based on Salmonella pathogenesis factors

Mohammad Hasan Jafari Najaf Abadi, Fahimeh Abdi Abyaneh, Noushid Zare, Javad Zamani, Amirhossein Abdoli, Fatemeh Aslanbeigi, Michael R. Hamblin, Hossein Tarrahimofrad, Mohammadreza Rahimi, Seyed Mohammadreza Hashemian, Hamed Mirzaei

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Currently, there are two vaccines based on killed and/or weakened Salmonella bacteria, but no recombinant vaccine is available for preventing or treating the disease. We used an in silico approach to design a multi-epitope vaccine against Salmonella using OmpA, OmpS, SopB, SseB, SthA and FilC antigens. We predicted helper T lymphocyte, cytotoxic T lymphocyte, and IFN-γ epitopes. The FilC sequence was used as a bovine TLR5 agonist, and the linkers KK, AAY, GPGPG and EAAAK were used to connect epitopes. The final sequence consisted of 747 amino acid residues, and the expressed soluble protein (∼79.6 kDa) was predicted to be both non-allergenic and antigenic. The tertiary structure of modeled protein was refined and validated, and the interactions of vaccine 3D structure were evaluated using molecular docking, and molecular dynamics simulation (RMSD, RMSF and Gyration). This structurally stable protein could interact with human TLR5. The C-ImmSim server predicted that this proposed vaccine likely induces an immune response by stimulating T and B cells, making it a potential candidate for further evaluation for the prevention and treatment of Salmonella infection.

Original languageEnglish
Article number106130
JournalMicrobial Pathogenesis
Volume180
DOIs
Publication statusPublished - Jul 2023

Keywords

  • Immunoinformatics
  • Molecular dynamics simulations
  • Peptide vaccine construct
  • Salmonella antigens

ASJC Scopus subject areas

  • Microbiology
  • Infectious Diseases

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