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Polyethersulfone improves isothermal nucleic acid amplification compared to current paper-based diagnostics.

J C Linnes1,2, N M Rodriguez1, L Liu1

  • 1Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.

Biomedical Microdevices
|February 25, 2016
PubMed
Summary
This summary is machine-generated.

Polyethersulfone membranes enable efficient nucleic acid amplification for point-of-care diagnostics, outperforming traditional paper-based materials in loop-mediated isothermal amplification (LAMP) and helicase dependent amplification (tHDA) tests.

Keywords:
Isothermal nucleic acid amplificationPaper-based diagnostic devicePoint-of-care diagnosticsPolyethersulfone

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Area of Science:

  • Biomaterials Science
  • Molecular Diagnostics
  • Point-of-Care Testing

Background:

  • Rapid, paper-based, isothermal nucleic acid amplification techniques are crucial for global point-of-care diagnostics.
  • Optimized materials are needed to enhance amplification and sample preparation in these devices.

Purpose of the Study:

  • To systematically investigate isothermal nucleic acid amplification in various porous membranes.
  • To compare the efficiency of loop-mediated isothermal amplification (LAMP) and helicase dependent amplification (tHDA) in different materials.

Main Methods:

  • Systematic investigation of amplification in cellulose paper, glass fiber, nitrocellulose, polyethersulfone, and polycarbonate membranes.
  • Comparison of four DNA and RNA targets (Bordetella pertussis, Chlamydia trachomatis, Neisseria gonorrhoeae, Influenza A H1N1) using LAMP, tHDA, and traditional PCR.
  • Evaluation of amplification efficiency in membrane-based assays versus membrane-free controls.

Main Results:

  • Traditional paper-based diagnostic membranes inhibited nucleic acid amplification compared to controls.
  • Polyethersulfone membranes demonstrated efficient amplification for both LAMP and tHDA reactions.
  • Traditional PCR performance within membranes did not predict in situ LAMP and tHDA outcomes.

Conclusions:

  • Polyethersulfone is a promising new material for paper-based nucleic acid amplification.
  • Polyethersulfone provides optimal support for rapid molecular diagnostics in point-of-care applications.
  • Material selection is critical for the success of isothermal nucleic acid amplification devices.