Jafari Parsa, Fatemeh, Zare, Shohre, Mirhosseini, Seyed Ali, Amani, Jafar (2020). Design of vaccine DNA containing genes encoding sicl Escherichia coli antigens Enterotoxigenic (ETEC) and Escherichia coli enterohemorrhagic (EHEC). , 23(4), 1-8.
Fatemeh Jafari Parsa; Shohre Zare; Seyed Ali Mirhosseini; Jafar Amani. "Design of vaccine DNA containing genes encoding sicl Escherichia coli antigens Enterotoxigenic (ETEC) and Escherichia coli enterohemorrhagic (EHEC)". , 23, 4, 2020, 1-8.
Jafari Parsa, Fatemeh, Zare, Shohre, Mirhosseini, Seyed Ali, Amani, Jafar (2020). 'Design of vaccine DNA containing genes encoding sicl Escherichia coli antigens Enterotoxigenic (ETEC) and Escherichia coli enterohemorrhagic (EHEC)', , 23(4), pp. 1-8.
Jafari Parsa, Fatemeh, Zare, Shohre, Mirhosseini, Seyed Ali, Amani, Jafar Design of vaccine DNA containing genes encoding sicl Escherichia coli antigens Enterotoxigenic (ETEC) and Escherichia coli enterohemorrhagic (EHEC). , 2020; 23(4): 1-8.

Design of vaccine DNA containing genes encoding sicl Escherichia coli antigens Enterotoxigenic (ETEC) and Escherichia coli enterohemorrhagic (EHEC)

Pathobiology Reserach
Article 2, Volume 23, Issue 4, 2020, Pages 1-8    PDF (948.45 K)
Document Type: Original Research
Authors
Fatemeh Jafari Parsa1; Shohre Zare2; Seyed Ali Mirhosseini3; Jafar Amani* 4
1Department of Genetics, Faculty of Basic Sciences, Islamic Azad University, Research Sciences Branch, Tehran, Iran.
2Department of Genetics and Biotechnology, Pishva Faculty of Biological Sciences, Islamic Azad University, Varamin Branch, Iran.
3Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran- Iran.
4Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Vanak Sq. Molasadra St. Tehran- Iran.
Abstract
Introduction: Enterotoxigenic Escherichia coli (ETEC) and Enterohemorrhagic Escherichia coli O157:H7 , the most common strains, are causes diarrhea that can kill hundreds of thousands of children annually. The development of an effective combination vaccine for enterohemorrhagic Escherichia coli and Enterotoxigenic Escherichia coli is very important.

Materials and Methods: In this study, the sicl gene was amplified and Subcloned as a DNA vaccine. The sequence of antigen encoding genes was evaluated from the genebank and their epitopes were evaluated to design of primer for the synthetic chimeric gene and was amplified by PCR. Subcloning of a multipartal chimeric gene in eukaryotic expression vector was performed to make a DNA vaccine and finally the protein was purified by nickel chromatography and evaluated by Western blotting.

Results: The immunoblotting results of the expression of SICL chimeric protein indicated the presence of a 76 kDa band in the form of insoluble particles after 12 hours induction. Purification of the recombinant protein using His tag sequencee and confirmation of the purified protein with the recombinant protein specific antibody demonstrated the accuracy of the protein expression.

Discussion & Conclusion: Protein expression, purification and verify by western blotting showed that this recombinant chimeric protein (SICL) can be expressed in eukaryotic host.
Keywords
Vaccine DNA; Enterotoxigenic Escherichia coli; Enterohemorrhagic Escherichia coli; Chimeric protein
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