MeCas12a, a Highly Sensitive and Specific System for COVID-19 Detection.

MeCas12a, a Highly Sensitive and Specific System for COVID-19 Detection.
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DOI:
10.1002/advs.202001300
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发表时间:
2020-10
期刊:
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:
--
通讯作者:
Wang X
Wang X
中科院分区:
其他
文献类型:
--
作者:
Ma P;Meng Q;Sun B;Zhao B;Dang L;Zhong M;Liu S;Xu H;Mei H;Liu J;Chi T;Yang G;Liu M;Huang X;Wang X

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基于Cas12a的系统通过对报告DNA的附带切割来检测特定核酸,在传染病的快速诊断方面显示出巨大潜力。在此,描述了锰增强的Cas12a(MeCas12a)系统,其中锰被用于将检测灵敏度提高多达13倍,能够检测到低至5个拷贝的目标RNA。MeCas12a还具有高度特异性,能够区分仅有一个核苷酸差异的单核苷酸多态性(SNP)。MeCas12a可以检测临床样本中的严重急性呼吸综合征冠状病毒2(SARS - CoV - 2),并在模拟样本中区分SARS - CoV - 2和中东呼吸综合征冠状病毒(MERS - CoV)的RNA,因此为包括新冠肺炎(COVID - 19)和中东呼吸综合征(MERS)在内的传染病诊断提供了一种有吸引力的替代方法。 一种基于锰增强的Cas12a(MeCas12a)的系统被开发出来,使检测限达到5个拷贝且具有高特异性。MeCas12a能够很好地检测临床样本中的严重急性呼吸综合征冠状病毒2(SARS - CoV - 2),并区分合成的SARS - CoV - 2和中东呼吸综合征冠状病毒(MERS - CoV)的RNA,从而为包括新冠肺炎(COVID - 19)和中东呼吸综合征(MERS)在内的传染病提供了一种替代诊断方法。
Cas12a‐based systems, which detect specific nucleic acids via collateral cleavage of reporter DNA, display huge potentials for rapid diagnosis of infectious diseases. Here, the Manganese‐enhanced Cas12a (MeCas12a) system is described, where manganese is used to increase the detection sensitivity up to 13‐fold, enabling the detection of target RNAs as low as five copies. MeCas12a is also highly specific, and is able to distinguish between single nucleotide polymorphisms (SNPs) differing by a single nucleotide. MeCas12a can detect severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) in clinical samples and distinguish between SARS‐CoV‐2 and Middle East respiratory syndrome coronavirus (MERS‐CoV) RNA in simulated samples, thus offering an attractive alternative to other methods for the diagnosis of infectious diseases including COVID‐19 and MERS. A Manganese‐enhanced Cas12a‐based (MeCas12a) system is developed, enabling the limit of detection to reach five copies and high specificity. The MeCas12a can detect severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) well in clinical samples, and distinguish synthetic SARS‐CoV‐2 and Middle East respiratory syndrome coronavirus (MERS‐CoV) RNAs, thus offering an alternative diagnosis of infectious diseases including COVID‐19 and MERS.
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