Engineering (Oct 2020)

A High-Throughput, Multi-Index Isothermal Amplification Platform for Rapid Detection of 19 Types of Common Respiratory Viruses Including SARS-CoV-2

  • Wanli Xing,
  • Yingying Liu,
  • Huili Wang,
  • Shanglin Li,
  • Yongping Lin,
  • Lei Chen,
  • Yan Zhao,
  • Shuang Chao,
  • Xiaolan Huang,
  • Shaolin Ge,
  • Tao Deng,
  • Tian Zhao,
  • Baolian Li,
  • Hanbo Wang,
  • Lei Wang,
  • Yunpeng Song,
  • Ronghua Jin,
  • Jianxing He,
  • Xiuying Zhao,
  • Peng Liu,
  • Weimin Li,
  • Jing Cheng

Journal volume & issue
Vol. 6, no. 10
pp. 1130 – 1140

Abstract

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Fast and accurate diagnosis and the immediate isolation of patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are regarded as the most effective measures to restrain the coronavirus disease 2019 (COVID-19) pandemic. Here, we present a high-throughput, multi-index nucleic acid isothermal amplification analyzer (RTisochip™-W) employing a centrifugal microfluidic chip to detect 19 common respiratory viruses, including SARS-CoV-2, from 16 samples in a single run within 90 min. The limits of detection of all the viruses analyzed by the RTisochip™-W system were equal to or less than 50 copies·μL−1, which is comparable to those of conventional reverse transcription polymerase chain reaction. We also demonstrate that the RTisochip™-W system possesses the advantages of good repeatability, strong robustness, and high specificity. Finally, we analyzed 201 cases of preclinical samples, 14 cases of COVID-19-positive samples, 25 cases of clinically diagnosed samples, and 614 cases of clinical samples from patients or suspected patients with respiratory tract infections using the RTisochip™-W system. The test results matched the referenced results well and reflected the epidemic characteristics of the respiratory infectious diseases. The coincidence rate of the RTisochip™-W with the referenced kits was 98.15% for the detection of SARS-CoV-2. Based on these extensive trials, we believe that the RTisochip™-W system provides a powerful platform for fighting the COVID-19 pandemic.

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