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Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...
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Enzyme-responsive nanoparticles for drug release and diagnostics.

Roberto de la Rica1, Daniel Aili, Molly M Stevens

  • 1Department of Materials, Department of Bioengineering & Institute for Biomedical Engineering, Imperial College London, UK.

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Summary

Enzyme-responsive nanoparticles offer precise drug delivery and diagnostics by leveraging enzyme activity. This review explores nanomaterials designed for targeted therapies and disease detection.

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Area of Science:

  • Bionanotechnology
  • Materials Science
  • Biochemistry

Background:

  • Enzymes possess unique biorecognition and catalytic properties.
  • Nanomaterials offer versatile physical characteristics.
  • Combining enzymes with nanomaterials creates responsive systems.

Purpose of the Study:

  • To review enzyme-responsive nanomaterials for drug delivery and diagnostics.
  • To highlight the design principles and applications of these advanced materials.
  • To discuss the role of enzymatic dysregulation in disease and its diagnostic potential.

Main Methods:

  • Review of literature on enzyme-responsive nanomaterials.
  • Classification of nanomaterials by type (e.g., polymer nanoparticles, liposomes, gold nanoparticles, quantum dots).
  • Categorization of enzyme triggers (hydrolases, oxidoreductases).

Main Results:

  • Enzyme-responsive nanoparticles enable targeted drug release and therapeutic molecule generation.
  • Enzymatic activity modulation of nanomaterial properties is key for function.
  • Dysregulated enzyme activity can be exploited for in vivo drug delivery programming and disease diagnostics.
  • Examples include protease-, lipase-, and glycosidase-responsive systems.

Conclusions:

  • Enzyme-responsive nanomaterials are powerful tools in nanomedicine for targeted drug delivery and diagnostics.
  • Their design allows for specific cargo release and therapeutic molecule synthesis.
  • Exploiting enzymatic dysregulation offers novel strategies for disease management and detection.