Key result
An in silico designed multi-peptide vaccine candidate for FMDV was predicted to be antigenic, non-allergenic, stable, and showed significant binding with bovine alleles.
Why the study?
Foot-and-mouth disease virus causes high infectivity in cattle and harmful socioeconomic effects, prompting the design of a vaccine candidate from its polyprotein.
An in silico designed multi-peptide vaccine for FMDV shows promising computational characteristics for antigenicity and stability, warranting further in vitro and in vivo testing.
May inform FMDV epitope vaccine design; leaves open in vivo immunogenicity and protection.
Foot-and-mouth disease virus (FMDV) is small RNA virus from Picornaviridae family; genus Aphthovirus. FMDV causes maximum levels of infectivity in cattle and harmful socioeconomic effects. The present report attempted to design vaccine candidate from the polyprotein of FMDV to stimulate protective immune response. The IEDB server was used to predict B and T cells epitopes that were linked via GPGPG and YAA linkers, respectively. Mycobacterium tuberculosis 50S ribosomal protein was exploited as an adjuvant and a six histidine-tag sequence was linked to the carboxyl end of the vaccine for purification and identification. The predicted vaccine comprised 313aa and was antigenic and not allergic. Moreover, the vaccine was acidic and showed stability and hydrophilicity. Vaccine secondary and tertiary structures were predicted. The tertiary structure was refined to ameliorate the quality of the global and local structures of the vaccine. Vaccine model validation was performed and the final quality score of the structural model was computed. The validated model was used for molecular docking with bovine (N*01801-BoLA-A11) allele. Docking process in terms of binding free energy score was significant. Vaccine solubility was investigated based on the protein of E. coli and the stability was based on the disulfide bonding to lessen the entropic and mobile points in vaccine. Lastly, the in silico cloning ensured the proper cloning and best translation of the DNA of vaccine in molecular vectors.
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Ahmed et al. (2022) studied Foot-and-mouth disease virus (FMDV). In silico multi-peptide vaccine candidate from FMDV polyprotein was evaluated on Vaccine design and in silico validation (antigenicity, stability, docking). An in silico designed multi-peptide vaccine candidate for FMDV was predicted to be antigenic, non-allergenic, stable, and showed significant binding with bovine alleles.
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