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Design, Synthesis, and Photochemical Properties of Clickable Caged Compounds
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Amphoteric calix[8]arene-based complex for pH-triggered drug delivery.

Yan Xue1, Yong Guan, Anna Zheng

  • 1Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, Canada.

Colloids and Surfaces. B, Biointerfaces
|July 17, 2012
PubMed
Summary

Synthesized amphoteric calix[8]arenes offer pH-sensitive drug delivery. These novel carriers efficiently release ciprofloxacin at acidic and basic pH levels, showing promise for targeted therapies.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Drug Delivery Systems

Background:

  • Calixarenes are macrocyclic compounds with a unique structure.
  • Developing pH-sensitive drug carriers is crucial for targeted drug release.
  • Amphoteric molecules can respond to changes in pH.

Purpose of the Study:

  • To synthesize novel amphoteric calix[8]arenes.
  • To evaluate their drug loading and release capabilities.
  • To investigate their potential as pH-sensitive drug carriers.

Main Methods:

  • Synthesis of amphoteric calix[8]arene from p-sulfonato-calix[8]arene.
  • Assessment of hydrophobic drug loading capacity.
  • In vitro drug release studies at varying pH levels (acidic, physiological, basic).

Main Results:

  • Successful synthesis of amphoteric calix[8]arenes with charged rims.
  • Demonstrated good hydrophobic drug loading capacity.
  • Exhibited pH-triggered release of ciprofloxacin, with higher release at pH 5.0 and 8.5 compared to physiological pH.

Conclusions:

  • Amphoteric calix[8]arenes are effective pH-sensitive drug carriers.
  • These compounds show potential for targeted delivery of hydrophobic drugs like ciprofloxacin.
  • The pH-triggered release mechanism enhances their applicability in advanced drug delivery systems.