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Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles
Published on: October 19, 2015
Tracking injectable microspheres in dynamic tissues with encapsulated superparamagnetic iron oxide nanoparticles
Travelle Franklin-Ford1, Nehal Shah, Ellen Leiferman
1Department of Biomedical Engineering, University of Wisconsin, 3152 Engineering Centers Building, 1550 Engineering Drive, Madison, WI 53705, USA.
Macromolecular Bioscience
|November 6, 2012
Summary
New trackable microspheres containing superparamagnetic iron oxide (SPIO) nanoparticles enable precise visualization of injectable delivery systems in tissue. This advancement offers improved tracking for sustained protein delivery and other applications.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Drug Delivery Systems
Background:
- Developing injectable delivery systems for sustained therapeutic release is crucial.
- Current imaging modalities have limitations in tracking the precise location of these systems.
- Poly(lactide-co-glycolide) (PLGA) microspheres are widely used for controlled drug delivery.
Purpose of the Study:
- To create trackable microspheres for enhanced visualization of injectable delivery systems.
- To demonstrate the efficacy of these microspheres in static and dynamic tissue environments.
- To improve upon existing methods for tracking delivery vehicles.
Main Methods:
- Incorporating superparamagnetic iron oxide (SPIO) nanoparticles into the core of PLGA microspheres.
- Preparing microspheres of a size comparable to those used for protein delivery.
- Evaluating the visibility and localization of the SPIO-loaded microspheres in tissue models.
Main Results:
- Successfully prepared trackable PLGA microspheres by embedding SPIO nanoparticles.
- Demonstrated the visibility of these microspheres in both static and dynamic tissue systems.
- Confirmed accurate localization of the microspheres to the injection site.
Conclusions:
- SPIO-loaded PLGA microspheres provide a novel and effective method for tracking injectable delivery systems.
- This technique offers superior sensitivity compared to less sensitive imaging modalities.
- The developed microspheres have potential applications beyond protein delivery, enabling precise tracking of various delivery vehicles.
