Design of cocktail peptide vaccine against Cytomegalovirus infection

Document Type: Short Communication


1 Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran

2 Department of Medical Biochemistry, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

3 Antimicrobial Resistance Research Center, Avicenna Research Institute, Mashhad University of Medical Science, Mashhad, Iran


Objective(s):Human Cytomegalovirus (HCMV) remains a major morbidity and mortality cause in immuno suppressed patients. Therefore, significant effort has been made towards the development of a vaccine. In this study, the expression of the pp65 and gB fusion peptides and Fc domain of mouse IgG2a as a novel delivery system for selective uptake of antigens by antigen-presenting cells (APCs) in Pichia pastoris yeast system were studied.
Materials and Method: In this study, four immune dominant sequences in pp65 protein and 3 immuno dominant sequences in gB protein were selected according to literature review. Peptide linker -GGGGS- was used for construction of fusion peptide. This fusion peptide was cloned in the pPICZαA expression vector and transfected into P. pastoris host cells.
Results: Dot blot and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) techniques showed that a high level of pp65-gB-Fc fusion peptide was expressed.
Conclusion: This CMV pp65-gB-Fc fusion peptide could be a promising candidate for the development of a novel peptide vaccine.


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