Paper microfluidic implementation of loop mediated isothermal amplification for early diagnosis of hepatitis C virus

Nat Commun. 2021 Nov 30;12(1):6994. doi: 10.1038/s41467-021-27076-z.

Abstract

The early diagnosis of active hepatitis C virus (HCV) infection remains a significant barrier to the treatment of the disease and to preventing the associated significant morbidity and mortality seen, worldwide. Current testing is delayed due to the high cost, long turnaround times and high expertise needed in centralised diagnostic laboratories. Here we demonstrate a user-friendly, low-cost pan-genotypic assay, based upon reverse transcriptase loop mediated isothermal amplification (RT-LAMP). We developed a prototype device for point-of-care use, comprising a LAMP amplification chamber and lateral flow nucleic acid detection strips, giving a visually-read, user-friendly result in <40 min. The developed assay fulfils the current guidelines recommended by World Health Organisation and is manufactured at minimal cost using simple, portable equipment. Further development of the diagnostic test will facilitate linkage between disease diagnosis and treatment, greatly improving patient care pathways and reducing loss to follow-up, so assisting in the global elimination strategy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biomedical Engineering / methods
  • Blood Urea Nitrogen
  • Diagnostic Tests, Routine
  • Early Diagnosis
  • Genotype
  • Hepacivirus
  • Hepatitis C / diagnosis*
  • Humans
  • Laboratories
  • Microfluidics / methods*
  • Molecular Diagnostic Techniques / methods*
  • Nucleic Acid Amplification Techniques / methods*
  • Point-of-Care Systems
  • Viral Load
  • World Health Organization

Supplementary concepts

  • LAMP assay