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Structurally Defined Water-Soluble Metallofullerene Derivatives towards Biomedical Applications.
Yanbang Li1, Rohin Biswas1, William P Kopcha1
1Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, USA.
Angewandte Chemie (International Ed. in English)
|November 9, 2022
Summary
A new metallobuckytrio (MBT) platform enables precise synthesis of water-soluble endohedral metallofullerenes (EMFs) for biomedical use. These EMFs offer improved safety and efficacy, advancing rare-earth element drug development.
Area of Science:
- Nanotechnology
- Materials Science
- Biomedical Engineering
Background:
- Endohedral metallofullerenes (EMFs) are promising for biomedical applications due to their ability to encapsulate rare-earth element (REE) ions, preventing toxic metal release.
- Current synthesis methods for water-soluble EMFs produce mixtures, hindering precise drug design and development.
Purpose of the Study:
- To develop a modular platform for synthesizing structurally defined, water-soluble EMF derivatives.
- To demonstrate the potential of this platform for creating advanced biomedical agents.
Main Methods:
- Synthesis of metallobuckytrio (MBT), a novel three-buckyball system.
- Functionalization of MBTs with polyethylene glycol (PEG) ligands to achieve water solubility and biocompatibility.
- Evaluation of gadolinium (Gd) MBTs for MRI contrast agent potential and lutetium (Lu) MBTs as photosensitizers.
Main Results:
- Water-soluble MBTs with PEG ligands exhibited excellent biocompatibility.
- Gadolinium MBTs demonstrated superior T1 relaxivity compared to conventional gadolinium complexes.
- Lutetium MBTs generated reactive oxygen species upon light irradiation, indicating photosensitizer capabilities.
Conclusions:
- The MBT platform offers a modular approach for creating well-defined, water-soluble EMFs with tunable properties.
- This platform holds significant potential for developing next-generation, bio-specific REE-based drugs and diagnostic agents.
