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Related Concept Videos

Real Time RT-PCR02:57

Real Time RT-PCR

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Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
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Related Experiment Video

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Efficient SARS-CoV-2 Quantitative Reverse Transcriptase PCR Saliva Diagnostic Strategy utilizing Open-Source Pipetting Robots
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Point-Of-Need One-Pot Multiplexed RT-LAMP Test For Detecting Three Common Respiratory Viruses In Saliva.

Aneesh Kshirsagar, Dean DeRosa, Anthony J Politza

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    |March 31, 2025
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    Summary
    This summary is machine-generated.

    A new saliva test can simultaneously detect SARS-CoV-2, Influenza, and RSV using machine learning. This rapid, point-of-care diagnostic tool improves accuracy and aids infection control for common respiratory viruses.

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    Area of Science:

    • Molecular Diagnostics
    • Infectious Diseases
    • Biotechnology

    Background:

    • Respiratory viral infections like SARS-CoV-2, Influenza, and RSV present diagnostic challenges due to overlapping symptoms.
    • Accurate and rapid point-of-care diagnostics are crucial for effective treatment, infection control, and public health management.
    • Current diagnostic methods may lack the speed or multiplexing capability needed for simultaneous detection of multiple common respiratory pathogens.

    Purpose of the Study:

    • To develop a multiplexed, non-invasive saliva-based molecular test for simultaneous detection of SARS-CoV-2, Influenza, and RSV.
    • To integrate a machine-learning-enabled compact analyzer for real-time monitoring and accurate quantification of target RNAs.
    • To provide a rapid, cost-effective point-of-need solution for respiratory infection diagnostics.

    Main Methods:

    • Development of a multiplexed reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay.
    • Utilized specific probes for simultaneous detection of three target RNAs in a single reaction.
    • Employed a machine-learning-enabled compact analyzer with real-time fluorescence detection for data analysis.
    • Validated the assay using spiked saliva samples and compared results with RT-PCR.

    Main Results:

    • The multiplexed assay demonstrated high accuracy in detecting SARS-CoV-2, Influenza, and RSV RNA.
    • Strong agreement was observed between the RT-LAMP assay and RT-PCR, with high Area Under the Curve (AUC) values (0.82-0.96).
    • The portable analyzer successfully quantified multiplexed reporters, adaptable to new targets without hardware modifications.

    Conclusions:

    • The developed saliva-based RT-LAMP test offers a practical and efficient tool for rapid, simultaneous detection of common respiratory infections at the point of care.
    • The integration of machine learning enhances diagnostic accuracy and enables adaptability for future pathogen detection.
    • This innovative diagnostic approach has the potential to improve patient outcomes, expand testing access, and support disease control, especially in resource-limited settings.