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Interfacial cationization to quicken redox-responsive drug release.

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Interfacial cationization enhances redox-responsiveness in lipid-drug nanoassemblies. This creates redox-ultrasensitive nanocarriers for improved intracellular drug delivery.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Drug Delivery

Background:

  • Disulfide bond-linked lipid-drug nanoassemblies (NAs) are being explored for drug delivery.
  • Improving the redox-responsiveness of these NAs is crucial for efficient intracellular drug release.

Purpose of the Study:

  • To investigate the effect of interfacial cationization on the redox-responsiveness of disulfide bond-linked lipid-drug nanoassemblies.
  • To develop redox-ultrasensitive nanocarriers for enhanced intracellular drug delivery.

Main Methods:

  • Fabrication of lipid-drug nanoassemblies with disulfide bonds.
  • Modification of the nanoassembly interface to induce cationization.
  • Evaluation of redox-responsiveness through thiol ionization and concentration studies.
  • Assessment of intracellular drug delivery efficiency.

Main Results:

  • Interfacial cationization significantly increased the redox-responsiveness of the nanoassemblies.
  • Alkalization at the cationic interface promoted the generation and concentration of ionized thiols.
  • The modified nanoassemblies demonstrated redox-ultrasensitive behavior.

Conclusions:

  • Interfacial cationization is a viable strategy to enhance the redox-responsiveness of disulfide bond-linked lipid-drug nanoassemblies.
  • This approach can lead to the development of advanced redox-ultrasensitive nanocarriers for effective intracellular drug delivery.