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Force-driven base recognition programs DNA origami-based supramolecular networks.

Liqiong Niu1, Yuanyuan Luo1, Pengyan Hao1

  • 1Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xianning West Road, Xi'an, Shaanxi 710049, P.R. China. wuna2017@xjtu.edu.cn.

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This study introduces a force-driven method for assembling large DNA nanostructures using constrained loops. Precise temperature control is achieved through DNA sequence and UV light manipulation.

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Area of Science:

  • Nanotechnology
  • Biophysics
  • Materials Science

Background:

  • DNA origami enables complex nanostructure fabrication.
  • Controlling nanostructure assembly at scale remains a challenge.
  • Thermoresponsive materials offer potential for dynamic control.

Purpose of the Study:

  • To develop a force-driven strategy for large-scale DNA nanostructure assembly.
  • To achieve precise thermoresponsive control over DNA nanostructures.
  • To utilize entropy compensation for efficient assembly.

Main Methods:

  • Anchoring conformationally constrained short loops at DNA origami edges.
  • Employing force-driven recognition for assembly.
  • Modulating nucleobase types for sequence-specific interactions.
  • Utilizing ultraviolet (UV) irradiation for external control.

Main Results:

  • Successful large-scale nanostructure assembly demonstrated.
  • Achieved precise thermoresponsive control across different temperature regimes.
  • Demonstrated the efficacy of entropy compensation in assembly.

Conclusions:

  • The proposed force-driven strategy enables scalable DNA nanostructure construction.
  • Nucleobase modulation and UV irradiation provide robust thermoresponsive control.
  • This approach advances the field of DNA nanotechnology and self-assembly.