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Related Concept Videos

Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

165
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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Modified-Release Drug Delivery Systems: Site-Targeted01:24

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Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
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Nanoparticle-filled complex colloidosomes for tunable cargo release.

Jonathan S Sander1, André R Studart

  • 1Complex Materials, Department of Materials, ETH Zurich , 8093 Zurich, Switzerland.

Langmuir : the ACS Journal of Surfaces and Colloids
|November 26, 2013
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Summary
This summary is machine-generated.

Scientists developed advanced colloidosomes, nanoparticle capsules, for controlled, on-demand release of cargo. These complex capsules offer single or multiple release events triggered by pH changes and magnetic fields.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Colloidosomes, or nanoparticle-shelled capsules, offer unique properties for controlled substance delivery.
  • Their selectively permeable shells, mechanical stability, and material versatility make them promising for various applications.

Purpose of the Study:

  • To create complex colloidosomes capable of on-demand, single or multiple cargo release events.
  • To achieve spatiotemporal control over cargo release using functional nanoparticles and magnetic fields.

Main Methods:

  • Incorporation of functional nanoparticles within the hollow core of colloidosomes.
  • Utilizing pH-triggered swelling or desorption of nanoparticles for cargo release.
  • Integration of magnetically responsive shells for external control.

Main Results:

  • Demonstrated unprecedented on-demand, multiple release capabilities from colloidosomes.
  • Achieved pH-triggered release through nanoparticle swelling (rupturing the shell) or desorption of cargo.
  • Showcased unique spatiotemporal control of cargo release using magnetically responsive colloidosomes.

Conclusions:

  • Complex colloidosomes with functional nanoparticles offer advanced solutions for controlled and on-demand cargo release.
  • The developed systems enable precise control over release kinetics and spatial targeting.
  • These findings open new avenues for drug delivery, diagnostics, and other nanotechnology applications.