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Modares Journal of Medical Sciences, Pathobiology. 2011; 14 (2): 51-62
in Persian | IMEMR | ID: emr-136900

ABSTRACT

In this study, two conserved genes [M1 and NP] of influenza virus were expressed in a bicistronic vector in order to develop a universal gene based vaccine. Plasmids M1-pIRES2-EGFP, pIRES2-NP were constructed by cloning the PCR products of M1 and NP genes which were amplified from the A/Peurto Rico/8/34 [H1N1] influenza virus strain into the plasmid expression vector pIRES2-EGFP, respectively. For construction of M1-pIRES2-NP bicistronic plasmid, M1 gene was extracted from M1-pIRES-EGFP plasmid and subcloned into pIRES2-NP construct. Finally, simultaneous expression of both genes was assessed by transient transfection of bicistronic plasmid into BHK-21 cell lines and subsequent immunofluorescence staining. The results of enzymatic double digestions on the constructed plasmids and sequencing demonstrated the success of cloning processes of above mentioned genes. Correct expression of these genes was confirmed by M1-pIRES2-NP plasmid expression in BHK-21 cell lines confirmed by immunofluoresence microscopy. Simultaneous expression of influenza M1 and NP genes from a bicistronic plasmid containing "IRES" sequence is achievable

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