Isolating Influenza RNA from Clinical Samples Using Microfluidic Oil-Water Interfaces

PLoS One. 2016 Feb 17;11(2):e0149522. doi: 10.1371/journal.pone.0149522. eCollection 2016.

Abstract

The effective and robust separation of biomolecules of interest from patient samples is an essential step in diagnostic applications. We present a platform for the fast extraction of nucleic acids from clinical specimens utilizing paramagnetic PMPs, an oil-water interface, a small permanent magnet and a microfluidic channel to separate and purify captured nucleic acids from lysate in less than one minute, circumventing the need for multiple washing steps and greatly simplifying and expediting the purification procedure. Our device was able to isolate influenza RNA from clinical nasopharyngeal swab samples with high efficiency when compared to the Ambion® MagMAXTM Viral RNA Isolation Kit, sufficiently separating nucleic acid analytes from PCR-inhibiting contaminants within the lysate while also critically maintaining high integrity of the viral genome. We find that this design has great potential for rapid, efficient and sensitive nucleic acid separation from patient sample.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Humans
  • Microfluidics / methods*
  • Molecular Weight
  • Oils / chemistry*
  • Orthomyxoviridae / genetics*
  • RNA, Viral / isolation & purification*
  • Water / chemistry*

Substances

  • Oils
  • RNA, Viral
  • Water

Grants and funding

The work was supported by Brown University seed funds. No number assigned to it. F.R.C. was partially supported through National Aeronautics Space Administration -Rhode Island grant. No number was assigned to it. F.R.C was also supported by Graduate Student Fellowship. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.