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Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa

  • Authors:
    • Orapan Manajit
    • Siwaporn Longyant
    • Paisarn Sithigorngul
    • Parin Chaivisuthangkura
  • View Affiliations / Copyright

    Affiliations: Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand
    Copyright: © Manajit et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5734-5743
    |
    Published online on: February 2, 2018
       https://doi.org/10.3892/mmr.2018.8557
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Abstract

Pseudomonas aeruginosa (P. aeruginosa) is an important opportunistic pathogen that causes serious infections in humans, including keratitis in contact lens wearers. Therefore, establishing a rapid, specific and sensitive method for the identification of P. aeruginosa is imperative. In the present study, the uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification combined with nanogold labeled hybridization probe (UDG-LAMP-AuNP) was developed for the detection of P. aeruginosa. UDG-LAMP was performed to prevent carry over contamination and the LAMP reactions can be readily observed using the nanogold probe. A set of 4 primers and a hybridization probe were designed based on the ecfX gene. The UDG-LAMP reactions were performed at 65˚C for 60 min using the ratio of 40% deoxyuridine triphosphate to 60% deoxythymidine triphosphate. The detection of UDG-LAMP products using the nanogold labeled hybridization probe, which appeared as a red-purple color, was examined at 65˚C for 5 min with 40 mM MgSO4. The UDG-LAMP-AuNP demonstrated specificity to all tested isolates of P. aeruginosa without cross reaction to other bacteria. The sensitivity for the detection of pure culture was 1.6x103 colony-forming units (CFU) ml-1 or equivalent to 3 CFU per reaction while that of polymerase chain reaction was 30 CFU per reaction. The detection limit of spiked contact lenses was 1.1x103 CFU ml-1 or equivalent to 2 CFU per reaction. In conclusion, the UDG-LAMP-AuNP assay was rapid, simple, specific and was effective for the identification of P. aeruginosa in contaminated samples.
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Copy and paste a formatted citation
Spandidos Publications style
Manajit O, Longyant S, Sithigorngul P and Chaivisuthangkura P: Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa. Mol Med Rep 17: 5734-5743, 2018.
APA
Manajit, O., Longyant, S., Sithigorngul, P., & Chaivisuthangkura, P. (2018). Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa. Molecular Medicine Reports, 17, 5734-5743. https://doi.org/10.3892/mmr.2018.8557
MLA
Manajit, O., Longyant, S., Sithigorngul, P., Chaivisuthangkura, P."Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa". Molecular Medicine Reports 17.4 (2018): 5734-5743.
Chicago
Manajit, O., Longyant, S., Sithigorngul, P., Chaivisuthangkura, P."Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa". Molecular Medicine Reports 17, no. 4 (2018): 5734-5743. https://doi.org/10.3892/mmr.2018.8557
Copy and paste a formatted citation
x
Spandidos Publications style
Manajit O, Longyant S, Sithigorngul P and Chaivisuthangkura P: Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa. Mol Med Rep 17: 5734-5743, 2018.
APA
Manajit, O., Longyant, S., Sithigorngul, P., & Chaivisuthangkura, P. (2018). Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa. Molecular Medicine Reports, 17, 5734-5743. https://doi.org/10.3892/mmr.2018.8557
MLA
Manajit, O., Longyant, S., Sithigorngul, P., Chaivisuthangkura, P."Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa". Molecular Medicine Reports 17.4 (2018): 5734-5743.
Chicago
Manajit, O., Longyant, S., Sithigorngul, P., Chaivisuthangkura, P."Development of uracil-DNA-glycosylase-supplemented loop-mediated isothermal amplification coupled with nanogold probe (UDG-LAMP-AuNP) for specific detection of Pseudomonas aeruginosa". Molecular Medicine Reports 17, no. 4 (2018): 5734-5743. https://doi.org/10.3892/mmr.2018.8557
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