Cloning, expression, purification and functional analysis of a specific multi-epitope protein from multi drug resistance Acinetobacter baumannii
Background and Objectives: Immunization is a promising strategy to combat against the life-threatening infections by Multi Drug Resistance Acinetobacter baumannii. In this study, we directed to design and evaluate the efficacy of a recombinant multi-epitope protein against this pathogen.
Materials and Methods: Epitopes prediction was performed for candidate proteins OmpA and BAM complex (BamA, BamB, BamC, BamD, BamE) from A. baumannii, using immune-informatics tools with high affinity for the human HLA alleles. After expression and purification of the recombinant protein, its functional activity was confirmed by interaction with positive sera.
Results: Cloning and expression of the desired multi-epitopes protein were verified. Circular Dichroism study showed the secondary structure and proper refolding of the recombinant protein was achieved and matched with computational prediction. There was a significant interaction between designed protein with antibodies presented in ICU patients' and staff's sera.
Conclusion: The interaction of the recombinant protein with patients' sera antibodies suggests that it may be a promising determinant protein for immunization against of MDR A. baumannii.
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|Issue||Vol 13 No 5 (2021)|
|Multi drug resistant; Acinetobacter baumannii; Recombinant multi-epitope protein (rMEP); OmpA; BAM complex|
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