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Related Experiment Video

Updated: Jun 7, 2025

Multiplexed Isothermal Amplification Based Diagnostic Platform to Detect Zika, Chikungunya, and Dengue 1
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Compact highly sensitive photothermal RT-LAMP chip for simultaneous multidisease detection.

Wenshang Guo1,2, Ye Tao2, Ruizhe Yang1,2

  • 1State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.

Science Advances
|November 13, 2024
PubMed
Summary

We developed a compact, highly sensitive photothermal reverse transcriptase-loop-mediated isothermal amplification (RT-LAMP) chip for rapid, cost-effective, multi-disease detection. This point-of-care testing (POCT) system offers accurate results using minimal resources.

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Area of Science:

  • Biotechnology
  • Medical Diagnostics
  • Point-of-Care Testing

Background:

  • Developing rapid, cost-effective disease detection systems is crucial for remote and resource-limited settings.
  • Existing systems often face challenges in balancing ease of operation, speed, and affordability.
  • The need for accessible point-of-care testing (POCT) solutions is paramount for global health equity.

Purpose of the Study:

  • To present a novel compact, highly sensitive photothermal reverse transcriptase-loop-mediated isothermal amplification (RT-LAMP) chip (SPRC) for simultaneous detection of multiple diseases.
  • To demonstrate the feasibility of using light energy (LED or sunlight) for nucleic acid amplification in a portable diagnostic device.
  • To establish the performance characteristics of the SPRC system, including its limit of detection, accuracy, and specificity.

Main Methods:

  • Nucleic acid (NA) amplification was performed using loop-mediated isothermal amplification (LAMP) on a specialized chip.
  • The amplification process was driven by either LED illumination or focused sunlight.
  • The SPRC chip incorporated autonomous nucleic acid enrichment during sample addition.
  • Performance was evaluated using 120 clinical samples.

Main Results:

  • The SPRC achieved a low limit of detection (LOD) of 0.2 copies per microliter.
  • The system demonstrated high accuracy (95%) and specificity (>97.5%) in detecting diseases from clinical samples.
  • The chip facilitated sample addition and amplification within a limited volume, enhancing portability.

Conclusions:

  • The developed SPRC system shows significant promise for point-of-care testing (POCT) applications.
  • This technology enables rapid, sensitive, and cost-effective multi-disease detection using accessible light sources.
  • The SPRC offers a viable solution for improving disease diagnostics in resource-limited environments.