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Glycosaminoglycan functionalized nanoparticles exploit glycosaminoglycan functions
James A Vassie1, John M Whitelock, Megan S Lord
1Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
Methods in Molecular Biology (Clifton, N.J.)
|October 19, 2014
Summary
We developed a method to attach heparin (a glycosaminoglycan) to cerium oxide nanoparticles (nanoceria). The functionalized nanoceria retained heparin
Area of Science:
- Materials Science
- Biotechnology
- Nanomedicine
Background:
- Nanoparticles offer diverse applications in medicine and diagnostics.
- Surface modification of nanoparticles with glycosaminoglycans (GAGs) is an emerging strategy to enhance their biological compatibility and therapeutic potential.
- Cerium oxide nanoparticles (nanoceria) are of interest due to their unique redox properties.
Purpose of the Study:
- To describe a method for functionalizing nanoceria surfaces with GAGs, specifically heparin.
- To investigate the impact of GAG functionalization on nanoparticle properties and activity.
- To evaluate the biological activity of heparin-functionalized nanoceria.
Main Methods:
- Functionalization of nanoceria using organosilane linkers (APTES, MPTMS).
- Covalent attachment of unfractionated and low molecular weight heparin to the functionalized nanoceria.
- Assessment of heparin activity using the activated partial thromboplastin time (APTT) assay.
Main Results:
- A robust method for covalently attaching heparin to nanoceria via organosilane linkers was established.
- The heparin's biological activity, as measured by APTT assay, remained unchanged after covalent attachment to nanoceria.
- This indicates that functionalized nanoceria can retain the therapeutic properties of the attached GAGs.
Conclusions:
- Heparin-functionalized nanoceria represent a promising platform for advanced biomedical applications.
- The developed method allows for the preservation of GAG activity on nanoparticle surfaces.
- Further research can explore these functionalized nanoparticles for drug delivery and imaging.
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