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10.1016/j.bios.2020.112953

http://scihub22266oqcxt.onion/10.1016/j.bios.2020.112953
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suck abstract from ncbi


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pmid33418182      Biosens+Bioelectron 2021 ; 176 (ä): 112953
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  • Botulinum toxin as an ultrasensitive reporter for bacterial and SARS-CoV-2 nucleic acid diagnostics #MMPMID33418182
  • Song F; Shen Y; Wei Y; Yang C; Ge X; Wang A; Li C; Wan Y; Li J
  • Biosens Bioelectron 2021[Mar]; 176 (ä): 112953 PMID33418182show ga
  • The rapid identification of pathogenic microorganisms plays a crucial role in the timely diagnosis and treatment strategies during a global pandemic, especially in resource-limited area. Herein, we present a sensitive biosensor strategy depended on botulinum neurotoxin type A light chain (BoNT/A LC) activated complex assay (BACA). BoNT/A LC, the surrogate of BoNT/A which embodying the most potent biological poisons, could serve as an ultrasensitive signal reporter with high signal-to-noise ratio to avoid common strong background response, poor stability and low intensity of current biosensor methods. A nanoparticle hybridization system, involving specific binding probes that recognize pathogenic 16S rRNAs or SARS-CoV-2 gene site, was developed to measure double-stranded biotinylated target DNA containing a single-stranded overhang using Fluorescence Resonance Energy Transfer (FRET)-based assay and colorimetric method. The method is validated widely by six different bacteria strains and severe acute respiratory related coronavirus 2 (SARS-CoV-2) nucleic acid, demonstrating a single cell or 1 aM nucleic acid detecting sensitivity. This detection strategy offers a solution for general applications and has a great prospect to be a simple instrument-free colorimetric tool, especially when facing public health emergency.
  • |*Botulinum Toxins, Type A[MESH]
  • |*Pandemics[MESH]
  • |Bacteria/genetics/isolation & purification[MESH]
  • |Bacterial Infections/diagnosis/microbiology[MESH]
  • |Biosensing Techniques/*methods[MESH]
  • |COVID-19 Nucleic Acid Testing/*methods[MESH]
  • |COVID-19/*diagnosis/*virology[MESH]
  • |Humans[MESH]
  • |SARS-CoV-2/genetics/*isolation & purification[MESH]


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