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Related Experiment Video

Updated: Jan 22, 2026

Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation
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Single-Molecule Mechanochemical Sensing Using DNA Origami Nanostructures.

Sagun Jonchhe1, Hanbin Mao2

  • 1Department of Chemistry and Biochemistry, Kent State University, Kent, OH, USA.

Methods in Molecular Biology (Clifton, N.J.)
|July 17, 2019
PubMed
Summary

Single-molecule mechanochemical sensing offers high sensitivity. DNA origami nanoassemblies enable multiplexed detection of analytes like platelet-derived growth factor (PDGF) and DNA, improving multitasking capabilities.

Keywords:
DNA origami nanostructureMechanochemical sensingOptical tweezersSingle-molecule technique

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Area of Science:

  • Biotechnology and Nanotechnology
  • Analytical Chemistry
  • Molecular Biology

Background:

  • Single-molecule techniques, including fluorescence-based methods, provide high sensitivity in biosensing.
  • Single-molecule mechanochemical sensing directly couples analyte recognition with signal amplification, achieving a high signal-to-noise ratio for chemical and biochemical detection.
  • Current limitations exist in parallel sensing capabilities for mechanochemical detection strategies.

Purpose of the Study:

  • To develop a multiplexing strategy for single-molecule mechanochemical sensing.
  • To enhance the multitasking compatibility of mechanochemical sensing.
  • To enable simultaneous detection of multiple analytes using DNA origami nanoassemblies.

Main Methods:

  • Utilized DNA origami nanoassemblies as templates for multiplexing.
  • Incorporated different sensing probes onto the DNA origami structures.
  • Employed mechanochemical reporting units for signal transduction.
  • Performed simultaneous detection of biological samples within microfluidic channels.

Main Results:

  • Demonstrated the capability of DNA origami nanoassemblies to serve as templates for multiplexed mechanochemical sensing.
  • Achieved simultaneous detection of diverse biological analytes, including platelet-derived growth factor (PDGF) and DNA fragments.
  • Successfully integrated sensing probes and mechanochemical reporting units on nanoassemblies for parallel detection.

Conclusions:

  • The DNA origami-based strategy significantly enhances the multitasking compatibility of single-molecule mechanochemical sensing.
  • This approach overcomes limitations in parallel sensing, enabling simultaneous detection of multiple targets.
  • The developed method holds promise for advanced biosensing applications requiring multiplexed analysis.