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Functionalized carbon dots enable simultaneous bone crack detection and drug deposition
A Shanti Krishna1, C Radhakumary, Molly Antony
1Laboratory for Polymer Analysis, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Thiruvananthapuram-695012, India. sreeni@sctimst.ac.in radha.changerath@gmail.com.
Journal of Materials Chemistry. B
|April 9, 2020
Summary
This study developed fluorescent carbon dots (CDs) for bone imaging and drug delivery. The functionalized CDs successfully targeted bone and delivered an antibacterial drug, showing potential as theranostic agents.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Drug Delivery Systems
Background:
- Carbon dots (CDs) are emerging nanomaterials with excellent fluorescence, chemical inertness, and biocompatibility for biological applications.
- There is a need for advanced theranostic agents capable of both diagnosis and therapy in bone-related conditions.
Purpose of the Study:
- To develop a fluorescent nanoprobes using carbon dots for visualizing bone cracks.
- To enable simultaneous drug delivery to cracked or infected bone sites.
- To evaluate the potential of functionalized CDs as theranostic agents.
Main Methods:
- Synthesis of water-soluble polyethylene glycol diamine-capped CDs.
- Conjugation of CDs with glutamic acid (GA) as a calcium-targeting ligand and ciprofloxacin as an antibacterial drug.
- Physicochemical characterization, cytotoxicity evaluation, haemolysis, and antibacterial activity studies.
- Assessment of the probe's bone-targeting ability.
Main Results:
- Successful synthesis of a fluorescent nanoprobes based on functionalized carbon dots.
- Demonstrated ability of the nanoprobes to target bone and deliver ciprofloxacin.
- Positive results from cytotoxicity, haemolysis, and antibacterial activity studies.
- Evidence of significant scope for functionalized CDs in theranostic applications.
Conclusions:
- Functionalized carbon dots show promise as theranostic agents for bone applications.
- The developed nanoprobes can visualize bone cracks and deliver antibacterial drugs effectively.
- Further development of these CDs could lead to improved bone fracture and infection treatments.
