Detection of 14 High-Risk Human Papillomaviruses Using Digital LAMP Assays on a Self-Digitization Chip

Anal Chem. 2021 Feb 16;93(6):3266-3272. doi: 10.1021/acs.analchem.0c04973. Epub 2021 Feb 3.

Abstract

Cervical cancer is the fourth-leading cause of cancer deaths among women worldwide and most cases occur in developing countries. Detection of high-risk (HR) HPV, the etiologic agent of cervical cancer, is a primary screening method for cervical cancer. However, the current gold standard for HPV detection, real-time PCR, is expensive, time-consuming, and instrumentation-intensive. A rapid, low-cost HPV detection method is needed for cervical cancer screening in low-resource settings. We previously developed a digital loop-mediated isothermal amplification (dLAMP) assay for rapid, quantitative detection of nucleic acids without the need for thermocycling. This assay employs a microfluidic self-digitization chip to automatically digitize a sample into an array of nanoliter wells in a simple assay format. Here we evaluate the dLAMP assay and self-digitization chip for detection of the commonly tested 14 high-risk HPVs in clinical samples. The dLAMP platform provided reliable genotyping and quantitative detection of the 14 high-risk HPVs with high sensitivity, demonstrating its potential for simple, rapid, and low-cost diagnosis of HPV infection.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Alphapapillomavirus*
  • Early Detection of Cancer
  • Female
  • Humans
  • Molecular Diagnostic Techniques
  • Nucleic Acid Amplification Techniques
  • Uterine Cervical Neoplasms*

Supplementary concepts

  • LAMP assay