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Oxide Nanowire Microfluidic Devices for Capturing Single-stranded DNAs.

Marina Musa1, Takao Yasui2,3,4, Zetao Zhu5

  • 1Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan. marinamusa2210@yahoo.com.

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
|January 25, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed oxide nanowire microfluidic devices for efficient single-stranded DNA (ssDNA) capture. ZnO/Al2O3 core/shell nanowires demonstrated optimal performance across various pH levels, ideal for biomedical applications.

Keywords:
DNA captureOxide nanowiremicrofluidic devicequantitative polymerase chain reaction (qPCR)single-stranded DNA

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Molecular Biology

Background:

  • DNA analysis is crucial for biomedical applications.
  • Efficient DNA capture is essential for sensitive detection and analysis.
  • Microfluidic devices offer platforms for advanced biological sample processing.

Purpose of the Study:

  • To investigate the efficiency of oxide nanowire microfluidic devices for capturing single-stranded DNAs (ssDNAs).
  • To evaluate the performance of different core/shell nanowire compositions (ZnO/ZnO, ZnO/Al2O3, ZnO/SiO2) under varying pH conditions.
  • To identify the optimal nanowire material and conditions for high-efficiency ssDNA capture in potential biological fluid applications.

Main Methods:

  • Fabrication of oxide nanowire microfluidic devices with various core/shell structures.
  • Testing ssDNA capture efficiency using these devices in solutions of different pH.
  • Characterizing nanowire performance based on captured ssDNA yields.
  • Analyzing the interactions between ssDNA components (phosphate backbones, nucleobases) and nanowire surfaces.

Main Results:

  • All tested oxide nanowires showed peak ssDNA capture efficiency around pH 7.
  • ZnO/ZnO core/shell NWs achieved 71.6% capture efficiency.
  • ZnO/Al2O3 core/shell NWs (86.3%) and ZnO/SiO2 core/shell NWs (86.7%) demonstrated superior performance.
  • ZnO/Al2O3 core/shell NWs exhibited the best overall performance for ssDNA capture across different pH levels.

Conclusions:

  • Oxide nanowire microfluidic devices provide a highly efficient platform for ssDNA capture.
  • ZnO/Al2O3 core/shell nanowires are particularly suitable for capturing ssDNAs in diverse biological fluids due to their performance across varying pH.
  • These findings support the development of advanced tools for analyzing target ssDNAs, with potential applications in cancer-related gene studies.