Intelligent Sensing Switches in Drug Delivery Systems: Mechanisms, Material Selection, and Future Perspectives

Area of Science:

• Biomaterials Science
• Nanotechnology
• Pharmacology

Background:

• Intelligent drug delivery systems (DDS) require precise control over drug release for improved therapeutic outcomes and reduced side effects.
• Responsive switches within DDS are key to regulating drug release timing and location based on internal or external cues.
• Stimuli-responsive switches are broadly classified into endogenous and exogenous types.

Purpose of the Study:

• To review diverse types of stimulus-responsive switches used in DDS, including dual-stimulus systems.
• To elaborate on the drug release mechanisms associated with various intelligent switches.
• To summarize the advantages and limitations of different stimulus-responsive DDS.

Main Methods:

• Review of existing literature on stimulus-responsive drug delivery systems.
• Analysis of drug release mechanisms for different intelligent switches.
• Highlighting properties of temperature-sensitive materials.
• Discussion of nano-engineered materials for pH and electromagnetic-responsive switches.

Main Results:

• Categorization of switches based on endogenous and exogenous stimuli.
• Detailed explanation of drug release mechanisms for various responsive switches.
• Summary of pros and cons for different stimulus-responsive systems.
• Overview of temperature-sensitive materials and nano-engineered materials for specific responsive switches.

Conclusions:

• Stimulus-responsive switches are vital for advanced DDS.
• Future DDS development aims for greater precision, clinical stability, and reliability.
• Nano-engineered materials offer promising avenues for sophisticated DDS functionalities.