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Microfluidic Chip Fabrication and Method to Detect Influenza
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Microfluidic Chip Fabrication and Method to Detect Influenza

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Oligonucleotide microchip for subtyping of influenza A virus

Eugeny E Fesenko1, Dmitry E Kireyev, Dmitry A Gryadunov

  • 1Laboratory of Biological Microchips, Engelhardt Institute of Molecular Biology of the Russian Academy of Sciences, Vavilov Str. 32, Moscow, Russia. fesenko@biochip.ru

Influenza and Other Respiratory Viruses
|May 21, 2009
PubMed
Abstract

Insights

This study introduces a novel gel-based microchip technology for rapid and sensitive molecular subtyping of influenza A virus. The method efficiently identifies multiple hemagglutinin (HA) and neuraminidase (NA) subtypes, improving influenza A virus monitoring.

Area of Science:

  • Virology
  • Molecular Biology
  • Biotechnology

Background:

  • Influenza A viruses are classified by hemagglutinin (HA) and neuraminidase (NA) glycoproteins.
  • Sixteen HA and nine NA subtypes are known, with some posing significant epidemiological threats.
  • Accurate and rapid subtyping is crucial for monitoring influenza A virus circulation.

Purpose of the Study:

  • To evaluate gel-based microchip technology for rapid and sensitive molecular subtyping of influenza A virus.
  • To assess the potential of this technology for identifying diverse HA and NA subtypes.
  • To determine the feasibility of this method for clinical and epidemiological surveillance.

Main Methods:

  • Utilizes a microchip with 3D gel-based elements and immobilized probes.
  • Employs multiplex reverse transcription polymerase chain reaction (RT-PCR) for gene amplification.
  • Hybridizes amplified HA and NA gene segments to the microchip for subtyping.

Main Results:

  • The developed microchip successfully identified 15 HA and 2 NA subtypes from 21 reference strains.
  • The entire procedure is completed within 10 hours.
  • Accurate identification of influenza A subtypes in 41 clinical samples was achieved with 76% sensitivity and 100% specificity.

Conclusions:

  • Gel-based microchip technology offers a promising method for rapid influenza A virus detection and identification.
  • This approach has the potential to significantly enhance influenza A virus surveillance efforts.
  • The technology demonstrates high specificity and efficiency for molecular subtyping.

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