Fullerenes are a distinct class of carbon nanostructures characterized by their hollow, spherical, cage-like architecture composed exclusively of carbon atoms arranged in pentagonal and hexagonal patterns. Since their discovery in 1985, fullerenes — including the widely studied C60 molecule — have attracted significant interest for their exceptional electronic, chemical, and physical properties, making them versatile candidates for a range of biological and biomedical applications.

Distinct Properties of Fullerenes

• Highly symmetric, closed-cage structure: offers stability and the ability to encapsulate atoms or molecules, enabling unique drug delivery platforms.
• Rich π-conjugated system: provides excellent electron affinity and photophysical properties, supporting applications in photodynamic therapy and bioimaging.
• Versatile functionalization: chemical modification enhances solubility, biocompatibility, and target specificity.
• Potent antioxidant behavior: fullerenes and their derivatives can scavenge reactive oxygen species (ROS), protecting cells from oxidative stress.

Biomedical Applications

• Drug and Gene Delivery Systems: functionalized fullerenes enable efficient encapsulation and transport of therapeutic agents, improving cellular uptake and controlled release.
• Photodynamic and Photothermal Therapy: fullerenes generate reactive oxygen species upon light activation, selectively killing cancerous or microbial cells while sparing healthy tissue.
• Antioxidant and Anti-inflammatory Agents: fullerenols and polyhydroxylated fullerenes reduce oxidative stress and inflammation, enhancing tissue survival and healing.
• Biosensing and Bioimaging: their unique optical and electronic properties facilitate sensitive molecular detection and enhanced imaging contrast.
• Tumor Theranostics: metallofullerenes and other derivatives serve dual roles in imaging and targeted cancer treatment, improving diagnosis and therapeutic outcomes.

Anti-Fullerene Antibodies: Emerging Tools in Biomedical Research

• Specific recognition: Anti-fullerene antibodies bind selectively to fullerene structures or fullerene-functionalized biomolecules, enabling innovative detection methods.

• Applications in diagnostics: These antibodies facilitate immunoassays to monitor fullerene biodistribution, clearance, and interactions in biological systems.
• Therapeutic monitoring: Anti-fullerene antibodies provide insights into immunogenicity and safety profiles of fullerene-based therapeutics.