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Electrochemical Strategy for Low-Cost Viral Detection
Marjon Zamani1, James M Robson1, Andy Fan1
1Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States.
ACS Central Science
|July 8, 2021
Summary
A new, low-cost electrochemical test detects human papillomavirus (HPV) and other viral infections at clinically relevant levels. This adaptable point-of-care technology improves accessibility for diagnosing sexually transmitted infections in resource-limited settings.
Area of Science:
- Biomedical Engineering
- Infectious Diseases
- Molecular Diagnostics
Background:
- Sexually transmitted infections like HIV and HPV disproportionately affect low-resource settings.
- Early diagnosis of HIV is crucial for management.
- HPV is the primary cause of cervical cancer, with 90% of cases occurring in low-resource areas, and HIV-positive women face a significantly higher risk of progression.
Purpose of the Study:
- To develop an inexpensive, adaptable point-of-care test for detecting clinically relevant viral loads.
- To create a cost-effective electrochemical platform for accessible viral infection screening.
Main Methods:
- Utilized a novel electrochemical platform with gold leaf electrodes.
- Integrated loop-mediated isothermal amplification (LAMP) with a CRISPR-based recognition assay for HPV detection.
- Tested the platform with extracted cervical swab samples.
Main Results:
- Achieved lower limits of detection down to 10^4 total copies of input nucleic acids for HPV DNA, a clinically relevant viral load.
- Demonstrated proof-of-concept for detecting HPV in complex human samples (cervical swabs).
- The developed platform is cost-effective and adaptable.
Conclusions:
- The novel electrochemical platform offers a rapid, cost-effective method for detecting viral infections.
- This adaptable technology has the potential to significantly improve accessibility to diagnostics for sexually transmitted infections, particularly in resource-limited settings.
- The technology can be extended to detect various viral infections beyond HPV.
