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Published on: August 29, 2025
Trojan Microparticles Potential for Ophthalmic Drug Delivery
Sergio Esteban-Pérez1, Irene Bravo-Osuna1,2, Vanessa Andrés-Guerrero1
1Complutense University, InnOftal Research Group, UCM 920415, Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Plaza Ramon y Cajal s/n, Madrid 28040, Spain.
Developing advanced drug delivery systems for eye diseases remains difficult. Trojan microparticle systems, combining micro and nanoparticles, show promise for ocular drug delivery but face technological challenges.
Area of Science:
- Ophthalmology
- Pharmaceutical Technology
- Biomedical Engineering
Background:
- Drug administration for ocular disorders presents significant technological challenges.
- Current Intraocular Drug Delivery Systems (IODDS), including microsystems and nanosystems, have limitations in maximizing therapeutic potential.
- Microsystems offer sustained release, while nanosystems provide protection and targeting, but ideal systems are lacking.
Purpose of the Study:
- To review the current state of nanoparticle-in-microparticle (NiMs) or trojan systems for drug delivery.
- To highlight the design, preparation, and characterization of trojan microparticles.
- To discuss the potential and limitations of trojan microparticles as IODDS.
Main Methods:
- Literature review of existing research on trojan systems and IODDS.
- Analysis of design strategies for combining micro and nanosystems.
- Evaluation of preparation and characterization techniques for trojan microparticles.
Main Results:
- Trojan systems represent an innovative approach to combine the benefits of micro and nanosystems for drug delivery.
- Technological challenges in the design and preparation of these systems persist, particularly for ocular applications.
- Existing literature provides insights into the potential of these systems but highlights areas needing further development.
Conclusions:
- Trojan microparticles offer a promising strategy for overcoming limitations in current ocular drug delivery.
- Further research and technological advancements are required to fully realize the potential of trojan systems for IODDS.
- Addressing the existing technological hurdles is crucial for the successful clinical application of these advanced delivery systems.
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