Surface Acoustic Wave Lysis and Ion-Exchange Membrane Quantification of Exosomal MicroRNA

  • Katherine E. Richards
  • David B. Go
  • Reginald HillEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1580)


MicroRNA detection and quantification are commonly explored techniques for diagnostic and prognostic predictions. Typically, microRNAs are extracted and purified from a biological source, converted into complementary DNA (cDNA), and amplified using real time polymerase chain reaction (RT-PCR). The number of RT-PCR cycles required to reach the threshold of detection provides a relative quantification of the target microRNA when this data is normalized to the quantity of a control microRNA. This methodology has several drawbacks, including the need to artificially amplify the target microRNA for detection as well as quantification errors that can occur due to expression level differences of the control microRNAs for normalization in various sample sources. Here, we provide a technique to quantify actual concentrations of target microRNAs directly from any biological source without the requirement of these additional steps. In addition, we describe an alternative approach for obtaining exosomal microRNAs directly from biological samples without the use of harsh detergents and RNA isolation.

Key words

MicroRNA RNA Detection Quantification Exosomes SAW Microfluidics Ion-exchange Membrane Biosensor 


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Copyright information

© Springer Science+Business Media LLC 2017

Authors and Affiliations

  • Katherine E. Richards
    • 1
  • David B. Go
    • 2
    • 3
  • Reginald Hill
    • 1
    Email author
  1. 1.Department of Biological Sciences, Harper Cancer Research InstituteUniversity of Notre DameSouth BendUSA
  2. 2.Department of Aerospace and Mechanical EngineeringUniversity of Notre DameSouth BendUSA
  3. 3.Department of Chemical and Biomolecular EngineeringUniversity of Notre DameSouth BendUSA

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