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Mesoporous silica-based hybrid materials for bone-specific drug delivery
Luigi Pasqua1, Ilaria Ester De Napoli1, Marzia De Santo1
1Department of Environmental and Chemical Engineering, University of Calabria 87036 Rende Italy luigi.pasqua@unical.it.
Nanoscale Advances
|September 22, 2022
Summary
This study developed a novel mesoporous silica nanoparticle system for targeted bone drug delivery. The system effectively delivered ibuprofen and demonstrated excellent biocompatibility, showing no toxicity to normal cells.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Drug Delivery Systems
Background:
- Developing targeted drug delivery systems for bone tissue is crucial for effective treatment of bone-related diseases.
- Mesoporous silica nanoparticles (MSN) offer a promising platform for drug encapsulation and controlled release.
- Alendronate is a well-established diphosphonate drug effective for bone targeting.
Purpose of the Study:
- To design and characterize a mesoporous silica-based drug delivery device for bone-specific delivery.
- To functionalize mesoporous silica nanoparticles (MSN) with alendronate for enhanced bone targeting.
- To evaluate the drug loading and release of ibuprofen from the developed MSN system and assess its biocompatibility.
Main Methods:
- MSN were synthesized and characterized using techniques including X-ray diffraction, N2 adsorption-desorption, UV-vis spectrophotometry, FT-IR, and MAS-NMR.
- Alendronate was electrostatically bonded to carboxyl functionalities on the MSN surface.
- Drug loading and release studies of ibuprofen were performed using High-Performance Liquid Chromatography (HPLC).
- Targeting activity was tested using synthesized hydroxyapatite, and biological tests assessed cell toxicity.
Main Results:
- The synthesized mesoporous silica nanoparticles were successfully functionalized with alendronate, demonstrating potential for bone targeting.
- Ibuprofen was loaded into the MSN and its release profile was characterized under neutral conditions.
- Biological evaluations confirmed the high biocompatibility of the developed system, with no observed toxicity towards normal cells.
Conclusions:
- The developed mesoporous silica nanoparticle system functionalized with alendronate shows significant potential for targeted bone drug delivery.
- The system exhibits excellent biocompatibility and a lack of off-target effects, making it a safe and effective platform for bone-specific therapies.
- Further research can explore the in vivo efficacy of this novel drug delivery system for various bone conditions.
