Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/41020 |
Resumo: | The hitherto implemented Listeria monocytogenes detection techniques are cumbersome or require expensive non-portable instrumentation, hindering their transposition into on-time surveillance systems. The current work proposes a novel integrated system resorting to loop-mediated isothermal amplification (LAMP), assisted by a bacteriophage P100–magnetic platform, coupled to an endpoint electrochemical technique, towards L. monocytogenes expeditious detection. Molybdophosphate-based optimization of the bacterial phagomagnetic separation protocol allowed the determination of the optimal parameters for its execution (pH 7, 25 °C, 32 µg of magnetic particles; 60.6% of specific capture efficiency). The novel LAMP method targeting prfA was highly specific, accomplishing 100% inclusivity (for 61 L. monocytogenes strains) and 100% exclusivity (towards 42 non-target Gram-positive and Gram-negative bacteria). As a proof-of-concept, the developed scheme was successfully validated in pasteurized milk spiked with L. monocytogenes. The phagomagnetic-based approach succeeded in the selective bacterial capture and ensuing lysis, triggering Listeria DNA leakage, which was efficiently LAMP amplified. Methylene blue-based electrochemical detection of LAMP amplicons was accomplished in 20 min with remarkable analytical sensitivity (1 CFU mL−1). Hence, the combined system presented an outstanding performance and robustness, providing a 2.5 h-swift, portable, cost-efficient detection scheme for decentralized on-field application. |
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Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenesBacteriophage P100Electrochemical detectionListeria monocytogenesLoop-mediated isothermal DNA amplificationMagnetic captureMilk analysisprfAThe hitherto implemented Listeria monocytogenes detection techniques are cumbersome or require expensive non-portable instrumentation, hindering their transposition into on-time surveillance systems. The current work proposes a novel integrated system resorting to loop-mediated isothermal amplification (LAMP), assisted by a bacteriophage P100–magnetic platform, coupled to an endpoint electrochemical technique, towards L. monocytogenes expeditious detection. Molybdophosphate-based optimization of the bacterial phagomagnetic separation protocol allowed the determination of the optimal parameters for its execution (pH 7, 25 °C, 32 µg of magnetic particles; 60.6% of specific capture efficiency). The novel LAMP method targeting prfA was highly specific, accomplishing 100% inclusivity (for 61 L. monocytogenes strains) and 100% exclusivity (towards 42 non-target Gram-positive and Gram-negative bacteria). As a proof-of-concept, the developed scheme was successfully validated in pasteurized milk spiked with L. monocytogenes. The phagomagnetic-based approach succeeded in the selective bacterial capture and ensuing lysis, triggering Listeria DNA leakage, which was efficiently LAMP amplified. Methylene blue-based electrochemical detection of LAMP amplicons was accomplished in 20 min with remarkable analytical sensitivity (1 CFU mL−1). Hence, the combined system presented an outstanding performance and robustness, providing a 2.5 h-swift, portable, cost-efficient detection scheme for decentralized on-field application.Veritati - Repositório Institucional da Universidade Católica PortuguesaMaciel, CláudiaSilva, Nádia F. D.Teixeira, PaulaMagalhães, Júlia M. C. S.2023-05-03T17:18:34Z2023-04-072023-04-07T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/41020eng2079-637410.3390/bios1304046485153678617000977509500001info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-12T17:46:36ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
title |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
spellingShingle |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes Maciel, Cláudia Bacteriophage P100 Electrochemical detection Listeria monocytogenes Loop-mediated isothermal DNA amplification Magnetic capture Milk analysis prfA |
title_short |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
title_full |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
title_fullStr |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
title_full_unstemmed |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
title_sort |
Development of a novel phagomagnetic-assisted isothermal DNA amplification system for endpoint electrochemical detection of Listeria monocytogenes |
author |
Maciel, Cláudia |
author_facet |
Maciel, Cláudia Silva, Nádia F. D. Teixeira, Paula Magalhães, Júlia M. C. S. |
author_role |
author |
author2 |
Silva, Nádia F. D. Teixeira, Paula Magalhães, Júlia M. C. S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Maciel, Cláudia Silva, Nádia F. D. Teixeira, Paula Magalhães, Júlia M. C. S. |
dc.subject.por.fl_str_mv |
Bacteriophage P100 Electrochemical detection Listeria monocytogenes Loop-mediated isothermal DNA amplification Magnetic capture Milk analysis prfA |
topic |
Bacteriophage P100 Electrochemical detection Listeria monocytogenes Loop-mediated isothermal DNA amplification Magnetic capture Milk analysis prfA |
description |
The hitherto implemented Listeria monocytogenes detection techniques are cumbersome or require expensive non-portable instrumentation, hindering their transposition into on-time surveillance systems. The current work proposes a novel integrated system resorting to loop-mediated isothermal amplification (LAMP), assisted by a bacteriophage P100–magnetic platform, coupled to an endpoint electrochemical technique, towards L. monocytogenes expeditious detection. Molybdophosphate-based optimization of the bacterial phagomagnetic separation protocol allowed the determination of the optimal parameters for its execution (pH 7, 25 °C, 32 µg of magnetic particles; 60.6% of specific capture efficiency). The novel LAMP method targeting prfA was highly specific, accomplishing 100% inclusivity (for 61 L. monocytogenes strains) and 100% exclusivity (towards 42 non-target Gram-positive and Gram-negative bacteria). As a proof-of-concept, the developed scheme was successfully validated in pasteurized milk spiked with L. monocytogenes. The phagomagnetic-based approach succeeded in the selective bacterial capture and ensuing lysis, triggering Listeria DNA leakage, which was efficiently LAMP amplified. Methylene blue-based electrochemical detection of LAMP amplicons was accomplished in 20 min with remarkable analytical sensitivity (1 CFU mL−1). Hence, the combined system presented an outstanding performance and robustness, providing a 2.5 h-swift, portable, cost-efficient detection scheme for decentralized on-field application. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-05-03T17:18:34Z 2023-04-07 2023-04-07T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.14/41020 |
url |
http://hdl.handle.net/10400.14/41020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2079-6374 10.3390/bios13040464 85153678617 000977509500001 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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