A New Approach for Designing a Potentially Vaccine Candidate against Urinary Tract Infection by Using Protein Display on Lactobacillus
-
Gholamreza Goudarzi
,
Jalil Fallah-Mehrabadi
,
Fatemeh Farahani-Hatamabadi
,
Hedroosha Molla-Agha-Mirzaei
,
Sarah Najafi
Abstract
Background: The prevalence of Urinary Tract Infection (UTI) is really high in the world. Escherichia coli is a major agent of UTI. One of the strategies for decreasing UTI infections is vaccine development. As the attachment is a really important stage in colonization and infection, at- tachment inhibition has an applied strategy. FimH protein is a major factor during bacterial colonization in urinary tract and could be used as a vaccine. Thus, it was considered in this research as a candidate anti- gen.
Methods: The sequences of fimH and acmA genes were used for de- signing a synthetic gene. It was cloned to pET23a expression vector and transformed to E. coli (DE3) Origami. To confirm the expression of recombinant protein, SDS-PAGE and western blotting methods were used. Subsequently, recombinant protein was purified. On the other hand, Lactobacillus reuteri was cultured and mixed with FimH / AcmA recombinant protein. The rate of protein localization on lactobacillus surface was assessed using ELISA method.
Results: It was showed that the recombinant protein was expressed in E. coli (DE3) Origami and purified by affinity chromatography. More- over, this protein could be localized on lactobacillus surface by 5 days.
Conclusion: In current study, a fusion recombinant protein was pre- pared and displayed on L. reuteri surface. This strain could be used for animal experiment as a competitor against Uropathogenic E. coli (UPEC). Using manipulated probiotics strains instead of antibiotic ther- apy could decrease the antibiotic consumption and reduce multi-drug resistant strains.
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| Issue | Vol 1 No 3-4 (2012) | |
| Section | Original Articles | |
| Keywords | ||
| Uropathogenic Escherichia coli Vaccines Urinary Tract Infection Probiotics | ||
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