Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes

A real-time polymerase chain reaction (PCR) assay with fluorescence resonance energy transfer (FRET) hybridisation probes combined with melting curve analysis was developed to detect Schistosoma japonicum in experimentally infected snails and in faecal samples of infected mice. This procedure is bas...

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Main Authors: Tongjit Thanchomnang, Pewpan Intapan, Pusadee Sri-Aroon, Viraphong Lulitanond, Penchome Janwan, Oranuch Sanpool, Wanchai Maleewong
Format: Article
Language:English
Published: Fundação Oswaldo Cruz (FIOCRUZ) 2011-11-01
Series:Memorias do Instituto Oswaldo Cruz
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000700008&lng=en&tlng=en
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author Tongjit Thanchomnang
Pewpan Intapan
Pusadee Sri-Aroon
Viraphong Lulitanond
Penchome Janwan
Oranuch Sanpool
Wanchai Maleewong
author_facet Tongjit Thanchomnang
Pewpan Intapan
Pusadee Sri-Aroon
Viraphong Lulitanond
Penchome Janwan
Oranuch Sanpool
Wanchai Maleewong
author_sort Tongjit Thanchomnang
collection DOAJ
description A real-time polymerase chain reaction (PCR) assay with fluorescence resonance energy transfer (FRET) hybridisation probes combined with melting curve analysis was developed to detect Schistosoma japonicum in experimentally infected snails and in faecal samples of infected mice. This procedure is based on melting curve analysis of a hybrid between an amplicon from the S. japonicum internal transcribed spacer region 2 sequence, which is a 192-bp S. japonicum-specific sequence, and fluorophore-labelled specific probes. Real-time FRET PCR could detect as little as a single cercaria artificially introduced into a pool of 10 non-infected snails and a single egg inoculated in 100 mg of non-infected mouse faeces. All S. japonicum-infected snails and all faecal samples from infected mice were positive. Non-infected snails, non-infected mouse faeces and genomic DNA from other parasites were negative. This assay is rapid and has potential for epidemiological S. japonicum surveys in snails, intermediate hosts and faecal samples of final hosts.
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spelling doaj.art-fdaadc88d0e2413c93b10c53116226612023-09-02T21:33:11ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz1678-80602011-11-01106783183610.1590/S0074-02762011000700008S0074-02762011000700008Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probesTongjit Thanchomnang0Pewpan Intapan1Pusadee Sri-AroonViraphong Lulitanond2Penchome Janwan3Oranuch Sanpool4Wanchai Maleewong5Mahasarakham UniversityMahidol UniversityKhon Kaen UniversityMahidol UniversityMahidol UniversityMahidol UniversityA real-time polymerase chain reaction (PCR) assay with fluorescence resonance energy transfer (FRET) hybridisation probes combined with melting curve analysis was developed to detect Schistosoma japonicum in experimentally infected snails and in faecal samples of infected mice. This procedure is based on melting curve analysis of a hybrid between an amplicon from the S. japonicum internal transcribed spacer region 2 sequence, which is a 192-bp S. japonicum-specific sequence, and fluorophore-labelled specific probes. Real-time FRET PCR could detect as little as a single cercaria artificially introduced into a pool of 10 non-infected snails and a single egg inoculated in 100 mg of non-infected mouse faeces. All S. japonicum-infected snails and all faecal samples from infected mice were positive. Non-infected snails, non-infected mouse faeces and genomic DNA from other parasites were negative. This assay is rapid and has potential for epidemiological S. japonicum surveys in snails, intermediate hosts and faecal samples of final hosts.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000700008&lng=en&tlng=enSchistosoma japonicumreal-time fluorescence resonance energy transfer PCRDNAsnailsmice
spellingShingle Tongjit Thanchomnang
Pewpan Intapan
Pusadee Sri-Aroon
Viraphong Lulitanond
Penchome Janwan
Oranuch Sanpool
Wanchai Maleewong
Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
Memorias do Instituto Oswaldo Cruz
Schistosoma japonicum
real-time fluorescence resonance energy transfer PCR
DNA
snails
mice
title Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
title_full Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
title_fullStr Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
title_full_unstemmed Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
title_short Molecular detection of Schistosoma japonicum in infected snails and mouse faeces using a real-time PCR assay with FRET hybridisation probes
title_sort molecular detection of schistosoma japonicum in infected snails and mouse faeces using a real time pcr assay with fret hybridisation probes
topic Schistosoma japonicum
real-time fluorescence resonance energy transfer PCR
DNA
snails
mice
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762011000700008&lng=en&tlng=en
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