<p>This paper reports the development of an advanced dual-stimuli-responsive drug-delivery system designed to enhance the precision and efficiency of targeted therapies. The system integrates the unique properties of ferrocene and porous iron oxide microspheres (P-Fe<sub>2</sub>O<sub>3</sub>) to respond to reactive oxygen species and external magnetic fields. Ferrocene, with its well-known redox properties, facilitates selective drug release in oxidative environments commonly found in tumor tissues, while P-Fe<sub>2</sub>O<sub>3</sub> imparts magnetism and porosity for improved targeting and controlled release under magnetic stimuli. P-Fe<sub>2</sub>O<sub>3</sub> is synthesized using an environmentally friendly, continuous, and scalable spray pyrolysis technique, whereas ferrocene-based polymers are prepared via radical polymerization. As conventional nanostructured microsphere syntheses are time intensive, use toxic acids, and face scale-up challenges, this study proposes spray pyrolysis as an efficient approach for producing well-designed porous iron oxide microspheres capable of loading ferrocene nanoparticles on a large scale. Combining these materials yields a synergistic effect, optimizing drug delivery through selective release and enhanced control mechanisms. The drug release profiles of the model compounds are assessed, underscoring the potential of this dual-response system for precise, efficient, and safe therapeutic delivery. This innovative platform demonstrates significant potential as a next-generation drug-delivery technology aimed at minimizing side effects and maximizing therapeutic outcomes in oncological applications.</p>

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Design of a dual-responsive system based on ferrocene and porous Fe2O3 microspheres for therapeutic applications

  • Dongseong Seo,
  • Tae Ha Kim,
  • Sangwoo Kim,
  • Sang-Hyun Kim,
  • Gi Dae Park,
  • Daekyung Sung

摘要

This paper reports the development of an advanced dual-stimuli-responsive drug-delivery system designed to enhance the precision and efficiency of targeted therapies. The system integrates the unique properties of ferrocene and porous iron oxide microspheres (P-Fe2O3) to respond to reactive oxygen species and external magnetic fields. Ferrocene, with its well-known redox properties, facilitates selective drug release in oxidative environments commonly found in tumor tissues, while P-Fe2O3 imparts magnetism and porosity for improved targeting and controlled release under magnetic stimuli. P-Fe2O3 is synthesized using an environmentally friendly, continuous, and scalable spray pyrolysis technique, whereas ferrocene-based polymers are prepared via radical polymerization. As conventional nanostructured microsphere syntheses are time intensive, use toxic acids, and face scale-up challenges, this study proposes spray pyrolysis as an efficient approach for producing well-designed porous iron oxide microspheres capable of loading ferrocene nanoparticles on a large scale. Combining these materials yields a synergistic effect, optimizing drug delivery through selective release and enhanced control mechanisms. The drug release profiles of the model compounds are assessed, underscoring the potential of this dual-response system for precise, efficient, and safe therapeutic delivery. This innovative platform demonstrates significant potential as a next-generation drug-delivery technology aimed at minimizing side effects and maximizing therapeutic outcomes in oncological applications.