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10.1002/bit.27718

http://scihub22266oqcxt.onion/10.1002/bit.27718
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33615437!8013395!33615437
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suck abstract from ncbi


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pmid33615437      Biotechnol+Bioeng 2021 ; 118 (5): 2053-2066
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  • A CRISPR/Cas9 eraser strategy for contamination-free PCR end-point detection #MMPMID33615437
  • Lin W; Tian T; Jiang Y; Xiong E; Zhu D; Zhou X
  • Biotechnol Bioeng 2021[May]; 118 (5): 2053-2066 PMID33615437show ga
  • Polymerase chain reaction (PCR), a central technology for molecular diagnostics, is highly sensitive but susceptible to the risk of false positives caused by aerosol contamination, especially when an end-point detection mode is applied. Here, we proposed a solution by designing a clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 eraser strategy for eliminating potential contamination amplification. The CRISPR/Cas9 engineered eraser is firstly adopted into artpcr reverse-transcription PCR (RT-PCR) system to achieve contamination-free RNA detection. Subsequently, we extended this CRISPR/Cas9 eraser to the PCR system. We engineered conventional PCR primers to enable the amplified products to contain an implanted NGG (protospacer adjacent motif, PAM) site, which is used as a code for specific CRISPR/Cas9 recognition. Pre-incubation of Cas9/sgRNA with PCR mix leads to a selective cleavage of contamination amplicons, thus only the template DNA is amplified. The developed CRISPR/Cas9 eraser, adopted by both RT-PCR and PCR systems, showed high-fidelity detection of SARS-CoV-2 and African swine fever virus with a convenient strip test.
  • |*CRISPR-Cas Systems[MESH]
  • |African Swine Fever Virus/isolation & purification[MESH]
  • |Animals[MESH]
  • |Humans[MESH]
  • |Polymerase Chain Reaction/*methods[MESH]
  • |RNA, Guide, CRISPR-Cas Systems[MESH]
  • |RNA, Viral/isolation & purification[MESH]
  • |Reverse Transcriptase Polymerase Chain Reaction/*methods[MESH]
  • |SARS-CoV-2/isolation & purification[MESH]


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