Bacillus subtilis spores displaying RBD domain of SARS-CoV-2 spike protein

Bacillus subtilis spores are considered to be efficient and useful vehicles for the surface display and delivery of heterologous proteins. In this study, we prepared recombinant spores with the receptor binding domain (RBD) of the SARS-CoV-2 spike glycoprotein displayed on their surface in fusion wi...

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Bibliographic Details
Published in:Computational and structural biotechnology journal 2023-01, Vol.21, p.1550-1556
Main Authors: Vetráková, A., Chovanová, R. Kalianková, Rechtoríková, R., Krajčíková, D., Barák, I.
Format: Article
Language:English
Subjects:
Bacillus subtilis
CotY
CotZ
RBD
Spore surface display
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Summary:Bacillus subtilis spores are considered to be efficient and useful vehicles for the surface display and delivery of heterologous proteins. In this study, we prepared recombinant spores with the receptor binding domain (RBD) of the SARS-CoV-2 spike glycoprotein displayed on their surface in fusion with the CotZ or CotY spore coat proteins as a possible tool for the development of an oral vaccine against the SARS-CoV-2 virus. The RBD was attached to the N-terminus or C-terminus of the coat proteins. We also directly adsorbed non-recombinantly produced RBD to the spore surface. SDS-PAGE, western blot and fluorescence microscopy were used to analyze RBD surface expression on purified spores. Results obtained from both display systems, recombinant and non-recombinant, demonstrated that RBD was present on the spore surfaces. [Display omitted]
ISSN:2001-0370
2001-0370
DOI:10.1016/j.csbj.2023.02.007