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DNA Virus Detection System Based on RPA-CRISPR/Cas12a-SPM and Deep Learning
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Bioinspired Plasmo-virus for Point-of-Care SARS-CoV-2 Detection.

Younggeun Park1,2, Byunghoon Ryu1,3, Seung Jun Ki1

  • 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.

Nano Letters
|December 27, 2022
PubMed
Summary
This summary is machine-generated.

A new bioinspired plasmo-virus (BPV) particle enables rapid, sensitive point-of-care detection of SARS-CoV-2. This breakthrough offers highly accurate diagnosis within minutes, crucial for early epidemic management.

Keywords:
Airborne viral particleplasmonic nanogappoint-of-care biosensorsevere acute respiratory syndrome coronavirus 2

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Area of Science:

  • Nanotechnology
  • Biomedical Engineering
  • Infectious Disease Diagnostics

Background:

  • Early detection of infectious agents like SARS-CoV-2 is critical for epidemic control, especially during the presymptomatic phase.
  • Current diagnostic methods may lack the speed and sensitivity required for timely point-of-care (POC) applications.

Purpose of the Study:

  • To develop a novel bioinspired plasmo-virus (BPV) particle for rapid and sensitive POC detection of SARS-CoV-2.
  • To achieve high sensitivity and speed for diagnosing viral infections, particularly in resource-limited settings.

Main Methods:

  • Synthesis of a bioinspired plasmo-virus (BPV) particle utilizing self-assembled plasmonic nanoprobe arrays on spike proteins.
  • Quantification of SARS-CoV-2 in viral transport medium (VTM) using the BPV system.

Main Results:

  • The BPV particle demonstrated strong near-infrared (NIR) extinction peaks due to plasmonic nanogaps.
  • Achieved detection of SARS-CoV-2 at low titers (1.4 × 10^1 pfu/mL) within 10 minutes.
  • Exhibited a limit of detection 1000 times more sensitive than current gold-standard methods.

Conclusions:

  • The developed BPV particle offers a highly sensitive and rapid method for SARS-CoV-2 detection at the POC.
  • This technology holds potential for widespread application in timely, individualized diagnosis of infectious agents, especially in low-resource environments.