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The research on the construction and characteristics of recombinant engineering bacteria with multi-epitope of Helicobacter pylori].

Posted by on in 2014
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[Article in Chinese]




To construct the multi epitope prokaryotic expression plasmid and appropriate engineering bacteria expressing the multi-epitope fusion protein of urea membrane channel protein (UreI), urease B subunit (UreB) and adhesin (HpaA) of Helicobacter pylori, then study its microbiological characteristics.


The target sequence contains multi epitope gene sequence of Helicobacter pylori were designed and synthesized, subsequently; it was subcloned into the expression vector pET28a (+), confirmed by restriction enzyme digestion and DNA sequencing. The fusion protein rIBA was expressed in E. coli Rosseta (DE3) and analyzed by Western blot.


The plasmid of pET28a(+)/IBA was constructed successfully, confirmed by endonuclease digestion and sequence analyze. The expressed rIBA protein with relative molecular mass about 40 x 10(3) and can be detected by Western blot.


The prokaryotic engineering bacteria expression multi-epitope of the Helicobacter pylori was constructed successfully. The recombinant protein rIBA expressed by the engineering bacteria can be identified by Sydney strain 1 of Helicobacter pylori (H. pylori SS1) specific antibody IgY, which demonstrated that the rIBA has high correlation with H. pylori SS1.

[PubMed - in process]
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