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Deprecated: Implicit conversion from float 235.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Anal+Chem 2021 ; 93 (7): 3393-3402 Nephropedia Template TP
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Detection of SARS-CoV-2 and Its Mutated Variants via CRISPR-Cas13-Based Transcription Amplification #MMPMID33511840
Wang Y; Zhang Y; Chen J; Wang M; Zhang T; Luo W; Li Y; Wu Y; Zeng B; Zhang K; Deng R; Li W
Anal Chem 2021[Feb]; 93 (7): 3393-3402 PMID33511840show ga
The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused a global health emergency, and its gene mutation and evolution further posed uncertainty of epidemic risk. Herein, we reported a light-up CRISPR-Cas13 transcription amplification method, which enables the detection of SARS-CoV-2 and its mutated variants. Sequence specificity was ensured by both the ligation process and Cas13a/crRNA recognition, allowing us to identify viral RNA mutation. Light-up RNA aptamer allows sensitive output of amplification signals via target-activated ribonuclease activity of CRISPR-Cas13a. The RNA virus assay has been designed to detect coronavirus, SARS-CoV-2, Middle East respiratory syndrome (MERS), and SARS, as well as the influenza viruses such as, H1N1, H7N9, and H9N2. It was accommodated to sense as low as 82 copies of SARS-CoV-2. Particularly, it allowed us to strictly discriminate key mutation of the SARS-CoV-2 variant, D614G, which may induce higher epidemic and pathogenetic risk. The proposed RNA virus assays are promising for point-of-care monitoring of SARS-CoV-2 and its risking variants.
|COVID-19 Nucleic Acid Testing/*methods[MESH]
|COVID-19/*virology[MESH]
|CRISPR-Associated Proteins/*genetics[MESH]
|CRISPR-Cas Systems/*genetics[MESH]
|Clustered Regularly Interspaced Short Palindromic Repeats/*genetics[MESH]