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Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
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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...
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Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Recent Developments in Nanoparticle-Hydrogel Hybrid Materials for Controlled Release.

Yiping Fan1, Qi Han1, Haiyan Li2

  • 1School of Science, STEM College, RMIT University, Melbourne, VIC, 3000, Australia.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 30, 2025
PubMed
Summary
This summary is machine-generated.

Nanoparticle-hydrogel composites offer advanced drug delivery by controlling molecular interactions for stable encapsulation and predictable release. This enhances therapeutic efficacy and enables personalized medicine applications.

Keywords:
drug deliveryhydrogelhydrogel compositehydrogel hybridlipidmicrogelnanoparticlesorganic–inorganic hybridstimuli responsiveness

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Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Nanotechnology

Background:

  • Nanoparticle (NP)-hydrogel hybrid materials integrate NP properties with hydrogel networks for advanced applications.
  • These composites can encapsulate diverse bioactive agents, including small molecules, peptides, proteins, and nucleic acids.

Purpose of the Study:

  • To review recent advances in NP-hydrogel composites for controlled drug delivery.
  • To emphasize the role of molecular interactions in shaping nanostructure, encapsulation, and release behavior.
  • To discuss enhanced mechanical strength, stimuli responsiveness, pharmacokinetics, and biological performance.

Main Methods:

  • Review of recent literature on NP-hydrogel hybrid materials.
  • Analysis of molecular interactions (electrostatic, hydrogen bonding, hydrophobic/hydrophilic balance) influencing composite properties.
  • Discussion of structure-property relationships for drug delivery optimization.

Main Results:

  • Molecular interactions critically govern NP-hydrogel nanostructure, drug encapsulation efficiency, and release kinetics.
  • Hybrid materials exhibit enhanced mechanical properties, stimuli responsiveness, and improved pharmacokinetic profiles.
  • Understanding these interactions facilitates the design of tunable and predictable drug release systems.

Conclusions:

  • NP-hydrogel composites are versatile platforms for controlled drug delivery, with significant potential for biomedical applications.
  • Further mechanistic understanding will drive the development of next-generation systems for personalized therapy and targeted treatments.
  • These advanced materials hold promise for broader clinical translation and improved patient outcomes.