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Davide Mariottini1, Andrea Idili1, Gianfranco Ercolani1

  • 1Chemistry Department, University of Rome, Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy.

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Summary

Scientists engineered programmable DNA devices that bind and release molecules at specific temperatures. This breakthrough in synthetic biology offers tunable control for applications like drug delivery and smart materials.

Keywords:
DNA nanotechnologyentropyintrinsic disordermolecular switchestemperature-responsive nanocarriers

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Area of Science:

  • Synthetic biology
  • Biochemistry
  • Materials science

Background:

  • DNA-based receptors offer precise molecular recognition capabilities.
  • Controlling ligand binding and release with external stimuli is crucial for advanced applications.

Purpose of the Study:

  • To develop a generalizable strategy for engineering synthetic DNA ligand-binding devices.
  • To program these devices for temperature-controlled ligand loading and release.
  • To enable tunable and reversible thermo-responsive behavior.

Main Methods:

  • Re-engineering two model DNA-based receptors: a triplex-forming bivalent receptor and an ATP-binding aptamer.
  • Modulating the temperature-dependent load/release characteristics by controlling linker entropy.
  • Creating a set of receptors with tunable and reversible temperature dependence.

Main Results:

  • Demonstrated a versatile strategy for creating programmable synthetic DNA ligand-binding devices.
  • Achieved fine control over the temperature at which ligands are loaded and released.
  • Enabled complex load/release behaviors, including sustained release over a wide temperature range.

Conclusions:

  • Programmable thermo-responsive synthetic ligand-binding devices offer significant potential.
  • These devices can be utilized in diverse applications such as drug delivery and smart material production.
  • The presented strategy is generalizable and versatile for future engineering efforts.