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10.1016/j.bios.2021.113503

http://scihub22266oqcxt.onion/10.1016/j.bios.2021.113503
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34303138!8280370!34303138
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suck abstract from ncbi


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pmid34303138      Biosens+Bioelectron 2021 ; 192 (ä): 113503
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  • A high-specificity flap probe-based isothermal nucleic acid amplification method based on recombinant FEN1-Bst DNA polymerase #MMPMID34303138
  • Ye X; Wang N; Li Y; Fang X; Kong J
  • Biosens Bioelectron 2021[Nov]; 192 (ä): 113503 PMID34303138show ga
  • The COVID-19 pandemic has unfortunately demonstrated how easily infectious diseases can spread and harm human life and society. As of writing, pandemic has now been on-going for more than one year. There is an urgent need for new nucleic acid-based methods that can be used to diagnose pathogens early, quickly, and accurately to effectively impede the spread of infections and gain control of epidemics. We developed a flap probe-based isothermal nucleic acid amplification method that is triggered by recombinant FEN1-Bst DNA polymerase, which-through enzymatic engineering-has both DNA synthesis, strand displacement and cleavage functions. This novel method offers a simpler and more specific probe-primer pair than those of other isothermal amplifications. We tested the method's ability to detect SARS-CoV-2 (both ORF1ab and N genes), rotavirus, and Chlamydia trachomatis. The limits of detection were 10 copies/muL for rotavirus, C. trachomatis, and SARS-CoV-2 N gene, and 100 copies/muL for SARS-CoV-2 ORF1ab gene. There were no cross-reactions among 11 other common pathogens with characteristics similar to those of the test target, and the method showed 100% sensitivity and 100% specificity in clinical comparisons with RT-PCR testing. In addition to real-time detection, the endpoint could be displayed under a transilluminator, which is a convenient reporting method for point-of-care test settings. Therefore, this novel nucleic acid senor has great potential for use in clinical diagnostics, epidemic prevention, and epidemic control.
  • |*Biosensing Techniques[MESH]
  • |COVID-19[MESH]
  • |Chlamydia trachomatis/*isolation & purification[MESH]
  • |DNA, Recombinant[MESH]
  • |DNA-Directed DNA Polymerase[MESH]
  • |Flap Endonucleases[MESH]
  • |Humans[MESH]
  • |Nucleic Acid Amplification Techniques[MESH]
  • |Pandemics[MESH]
  • |Rotavirus/*isolation & purification[MESH]
  • |SARS-CoV-2/*isolation & purification[MESH]


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