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Author Spotlight: Advancing Antiviral Strategies Through Novel Immunocapture and Mass Spectrometry Techniques
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Multiplex solid-phase RPA coupled CRISPR-based visual detection of SARS-CoV-2.

Xiaochen Qin1, Ratul Paul2, Yuyuan Zhou1

  • 1Department of Bioengineering, Lehigh University, Bethlehem, PA, 18015, USA.

Biosensors & Bioelectronics: X
|January 31, 2024
PubMed
Summary
This summary is machine-generated.

A new spRPA-CRISPR assay offers rapid, visual detection of SARS-CoV-2. This sensitive COVID-19 test identifies low gene concentrations, aiding pandemic control.

Keywords:
COVID-19CRISPR-Based assayDNA sensorMultiplexed spRPA-CRISPR assayPoint-of-careVisual detection

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Area of Science:

  • Biotechnology
  • Molecular Diagnostics
  • Public Health

Background:

  • The COVID-19 pandemic necessitates rapid, sensitive, and accessible diagnostic tools.
  • Current surveillance methods require improvement for effective control of SARS-CoV-2.

Purpose of the Study:

  • To develop and demonstrate a solid-phase isothermal recombinase polymerase amplification coupled CRISPR-based (spRPA-CRISPR) assay.
  • To achieve on-chip, multiplexed, sensitive, and visual detection of COVID-19 DNA.

Main Methods:

  • Utilized spRPA-CRISPR assay targeting SARS-CoV-2 structure protein genes.
  • Employed Cas12a-crRNA collateral cleavage for fluorescent signal detection.
  • Integrated amplification and detection on a single device for visual readout.

Main Results:

  • The assay demonstrated multiplexed detection of two specific SARS-CoV-2 genes without cross-interaction.
  • Achieved analytical sensitivity down to 20 copies per microliter.
  • Enabled visible COVID-19 detection using a low-cost blue LED flashlight.

Conclusions:

  • The developed spRPA-CRISPR platform provides a sensitive, visual, and easy-to-read method for multiplexed gene detection.
  • This assay is suitable for rapid, point-of-care COVID-19 diagnosis and surveillance.
  • The cost-effective nature of the detection system enhances its potential for global public health applications.