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10.1093/bib/bbaa193

http://scihub22266oqcxt.onion/10.1093/bib/bbaa193
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32935831!7543284!32935831
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suck abstract from ncbi


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pmid32935831      Brief+Bioinform 2021 ; 22 (2): 1215-1224
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  • Identification of the RNase-binding site of SARS-CoV-2 RNA for anchor primer-PCR detection of viral loading in 306 COVID-19 patients #MMPMID32935831
  • Xu T; Wang J; Hu B; Zhang G; Zhou W; Zheng M; Shen B; Sun B; Zhang Y; Chen Y; Yu J; Liang M; Pan J; Chen C; Chen H; Jiang M; Xu L; Qu J; Chen JF
  • Brief Bioinform 2021[Mar]; 22 (2): 1215-1224 PMID32935831show ga
  • The pandemic of coronavirus disease 2019 (COVID-19) urgently calls for more sensitive molecular diagnosis to improve sensitivity of current viral nuclear acid detection. We have developed an anchor primer (AP)-based assay to improve viral RNA stability by bioinformatics identification of RNase-binding site of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA and implementing AP dually targeting the N gene of SARS-CoV-2 RNA and RNase 1, 3, 6. The arbitrarily primed polymerase chain reaction (AP-PCR) improvement of viral RNA integrity was supported by (a) the AP increased resistance of the targeted gene (N gene) of SARS-CoV-2 RNA to RNase treatment; (b) the detection of SARS-CoV-2 RNA by AP-PCR with lower cycle threshold values (-2.7 cycles) compared to two commercially available assays; (c) improvement of the viral RNA stability of the ORF gene upon targeting of the N gene and RNase. Furthermore, the improved sensitivity by AP-PCR was demonstrated by detection of SARS-CoV-2 RNA in 70-80% of sputum, nasal, pharyngeal swabs and feces and 36% (4/11) of urine of the confirmed cases (n = 252), 7% convalescent cases (n = 54) and none of 300 negative cases. Lastly, AP-PCR analysis of 306 confirmed and convalescent cases revealed prolonged presence of viral loading for >20 days after the first positive diagnosis. Thus, the AP dually targeting SARS-CoV-2 RNA and RNase improves molecular detection by preserving SARS-CoV-2 RNA integrity and reveals the prolonged viral loading associated with older age and male gender in COVID-19 patients.
  • |Aged[MESH]
  • |Binding Sites[MESH]
  • |COVID-19/*virology[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Male[MESH]
  • |Polymerase Chain Reaction/*methods[MESH]
  • |RNA, Viral/genetics[MESH]
  • |Ribonucleases/*metabolism[MESH]
  • |SARS-CoV-2/genetics/isolation & purification/*metabolism[MESH]


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