Research progress on calixarene/pillararene-based controlled drug release systems.

Area of Science:

• Biomedical Engineering
• Materials Science
• Supramolecular Chemistry

Background:

• Intelligent controlled-release drug delivery systems are crucial for targeted therapies.
• Aromatic macrocycles, specifically calixarenes and pillararenes, offer unique properties for supramolecular system construction.
• These macrocycles possess electron-rich, hydrophobic cavities ideal for molecular recognition and drug encapsulation.

Purpose of the Study:

• To review advancements in controlled drug release systems utilizing aromatic macrocycles.
• To explore systems based on host-guest recognition, self-assembly, and nano-valves.
• To analyze stimuli-responsive mechanisms including pH, light, enzyme, hypoxia, and multi-stimuli.

Main Methods:

• Review of recent literature on calixarene and pillararene-based drug delivery systems.
• Analysis of host-guest interactions, self-assembly principles, and nano-valve mechanisms.
• Categorization of systems based on responsiveness to specific stimuli (pH, light, enzyme, hypoxia, multi-stimuli).

Main Results:

• Demonstrated utility of calixarenes and pillararenes in creating stimuli-responsive supramolecular drug delivery platforms.
• Highlighted diverse mechanisms for controlled drug release, including selective molecular recognition and self-assembly.
• Showcased systems responding to single and combined stimuli for enhanced therapeutic precision.

Conclusions:

• Aromatic macrocycles are highly promising for developing sophisticated, controlled drug release technologies.
• Stimuli-responsive systems offer significant potential for targeted and efficient drug delivery in clinical settings.
• Future research should focus on translating these advanced macrocycle-based systems into practical therapeutic applications.