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Related Concept Videos

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

Modified-Release Drug Delivery Systems: Site-Targeted

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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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Development of ROS-responsive liposomes toward targeted drug delivery.

Mayesha B Mustafa1, Jinchao Lou2, Michael D Best1

  • 1Department of Chemistry, The University of Tennessee, Knoxville, TN, USA.

Expert Opinion on Drug Delivery
|September 1, 2025
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Summary
This summary is machine-generated.

Reactive oxygen species (ROS) enable targeted drug delivery via ROS-responsive liposomes. These engineered nanoparticles offer enhanced selectivity for diseased cells by activating in high ROS environments.

Keywords:
Lipidcancer therapydrug deliveryliposomenanomedicineoxidative stressreactive oxygen species (ROS)

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Drug Delivery Systems

Background:

  • Reactive oxygen species (ROS) are key mediators in pathophysiological conditions.
  • Elevated ROS levels present opportunities for targeted drug delivery.
  • ROS-responsive liposomes offer enhanced selectivity for diseased cells.

Purpose of the Study:

  • To review strategies for engineering ROS-responsive liposomes.
  • To discuss applications of these liposomes in targeted therapy.
  • To explore methods for optimizing liposome design and function.

Main Methods:

  • Engineering ROS-responsive liposomes via lipid switch oxidation.
  • Designing prodrug strategies for medicinal agent detachment.
  • Implementing programmed cellular delivery and photodynamic therapies.

Main Results:

  • Lipid switch oxidation enables ROS-triggered cargo release.
  • Prodrug strategies facilitate medicinal agent detachment.
  • Programmed activation enhances cellular delivery and therapeutic outcomes.

Conclusions:

  • ROS-responsive liposomes are adaptable for targeted therapy in high oxidative stress environments.
  • Platform attributes address stability, scalability, and clinical efficacy.
  • Careful tuning of liposome stability is crucial for differentiating between diseased and healthy cells.