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Development of a Point-of-Care Assay for HIV-1 Viral Load Using Higher Refractive Index Antibody-Coated Microbeads
Mazhar Sher1,2, Benjamin Coleman3, Massimo Caputi4
1Asghar-Lab, Micro and Nanotechnology in Medicine, College of Engineering and Computer Science, Boca Raton, FL 33431, USA.
Sensors (Basel, Switzerland)
|April 3, 2021
Summary
This study introduces a novel imaging system using antibody-coated microbeads to detect viruses like HIV-1. This portable, cost-effective platform enables rapid, accurate viral load quantification for point-of-care settings.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Virology
Background:
- Virus detection via imaging is difficult due to weak light scattering from nanoscale targets.
- Existing methods lack portability and cost-effectiveness for widespread point-of-care use.
Purpose of the Study:
- To develop a portable, cost-effective, and field-deployable platform for rapid quantification of HIV-1 viral load.
- To overcome light scattering challenges in nanoscale virus detection using enhanced optical properties.
Main Methods:
- Utilized microfluidics and lensless imaging technology.
- Functionalized glass slides with antibodies to capture HIV-1 virions within a microchip.
- Employed antibody-conjugated microbeads with a higher refractive index to bind captured virions, enhancing signal detection via diffraction patterns.
Main Results:
- Developed a system capable of rapid and accurate quantification of HIV-1 viral load.
- Demonstrated successful nanoscale virus imaging and quantification from biological samples.
- The microbead-based approach effectively overcomes light scattering limitations.
Conclusions:
- The developed platform offers a significant advancement for point-of-care viral load monitoring.
- This technology enables fast, sensitive virus detection and quantification, crucial for managing viral diseases.
- The system's portability and cost-effectiveness make it suitable for field deployment and diverse clinical settings.
