Construction of a recombinant Lactobacillus acidophilus expressing high levels of Helicobacter pylori adhesin Hp0410 / 南方医科大学学报
Journal of Southern Medical University
;
(12): 334-337, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-269595
ABSTRACT
<p><b>OBJECTIVE</b>To construct a recombinant Lactobacillus acidophilus that expresses high levels of Helicobacter pylori (Hp) adhesin Hp0410.</p><p><b>METHODS</b>The gene fragment encoding Hp0410 was amplified by PCR from the DNA of H. pylori NCTC11639 strain and cloned into the shuttle plasmid pMG36e to construct pMG36e-Hp0410, which was transformed into Lactobacillus acidophilus by electroporation. The target protein was confirmed with SDS-PAGE and silver nitrate staining and analyzed by Western blotting. The stability of the recombinant plasmid was assessed by drawing the growth curve of the recombinant Lactobacillus acidophilus.</p><p><b>RESULTS</b>A 750-bp fragment was inserted into the pMG36e plasmid and transformed into Lactobacillus lactis. The transformed bacterium expressed the target protein with a relative molecular mass of about 34 kD. Western blotting confirmed that the expressed proteins could be recognized by the serum of patients with Hp infection. The recombinant plasmid pMG36e-Hp0410 exhibited good stability in the presence or absence of erythromycin.</p><p><b>CONCLUSIONS</b>The recombinant Lactobacillus acidophilus with high constitutive expression of Hp0410 has been constructed successfully.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Plasmids
/
Recombinant Proteins
/
Bacterial Vaccines
/
Vaccines, Attenuated
/
Helicobacter Infections
/
Adhesins, Bacterial
/
Allergy and Immunology
/
Genetics
/
Lactobacillus acidophilus
/
Metabolism
Limits:
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2010
Type:
Article
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