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Genetic research

Sensitive Detection of Viral Gene Fragments through Isothermal Amplification

Strategic Insights

— 2 min read

Researchers from Dezhou University in China have developed a novel isothermal amplification-bridged DNA switch for the sensitive detection of viral gene fragments, offering considerable promise for the clinical diagnosis of infectious diseases. This breakthrough addresses the need for rapid and accurate diagnostic tools, particularly in the face of emerging viral threats. The study's findings demonstrate the method's effectiveness in detecting the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) gene fragment with a limit of detection of 0.04 fM and a linear range spanning approximately eight orders of magnitude.

Key Takeaways:

  • The isothermal amplification-bridged DNA switch technology enables the sensitive detection of viral gene fragments, with a limit of detection of 0.04 fM for SARS-CoV-2.
  • The method achieves an extensive linear range of approximately eight orders of magnitude, allowing for the detection of viral gene fragments in various biological samples with varying concentrations.
  • The technology offers promise for clinical diagnostic applications, particularly in the detection of SARS-CoV-2 and other viral infections.
  • The recognition strands can be modified to selectively detect other viral gene fragments, highlighting the method's versatility and adaptability.
  • Additional research opportunities arise from the method's ability to detect viral gene fragments in patients presenting with upper respiratory symptoms.
  • The study's findings have been peer-reviewed and published in the journal Analytical Methods.
  • Funding for this research was provided by the Natural Science Foundation of Shandong Province, National Natural Science Foundation of China (NSFC), and other Chinese research institutions.

Statistics:

  • The isothermal amplification-bridged DNA switch achieves a limit of detection of 0.04 fM for SARS-CoV-2 gene fragments.
  • The method offers a linear range of approximately eight orders of magnitude for detecting viral gene fragments.
  • The tea has been funded by 4 grants from the aforementioned organizations.
  • One author, Wei Li, can be contacted at Dezhou University, Institute for Biophysics, School of Pharmacy, Dezhou 253023, People's Republic of China.
  • Keywords for this news article include: Dezhou, People's Republic of China, Asia, Coronavirus, Diagnostics and Screening, Genetics, RNA Viruses, Rabies Virus, Risk and Prevention, Viral, Virology, Dezhou University.

Sources:

  • An Isothermal Amplification-bridged Ratiometric Dna Switch for Sensitive Detection of Viral Gene Fragments. Analytical Methods, 2025;17(35):6974-6981.
  • NewsRx. Investigators from Dezhou University Report New Data on Rabies Virus (An Isothermal Amplification-bridged Ratiometric Dna Switch for Sensitive Detection of Viral Gene Fragments). Medical Letter on the CDC & FDA. October 19, 2025; p 587.

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