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Oligomeric nanoparticles functionalized with NIR-emitting CdTe/CdS QDs and folate for tumor-targeted imaging
Yue Yuan1, Jia Zhang1, Linna An1
1CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
Biomaterials
|June 24, 2014
Summary
Researchers developed novel hybrid nanoparticles for targeted cancer imaging. These biocompatible nanoparticles selectively target and illuminate tumors in vivo, offering a new tool for precise cancer detection.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Medical Imaging
Background:
- Oligomeric nanoparticles (1-NPs) offer biocompatibility.
- Targeted cancer imaging requires selective delivery of imaging agents.
- Folates receptors (FR) are overexpressed in many tumor cells.
Purpose of the Study:
- To develop novel hybrid nanoparticles for targeted cancer imaging.
- To functionalize biocompatible nanoparticles with near-infrared (NIR) emitting quantum dots (QDs) and folate.
- To evaluate the in vitro and in vivo tumor-targeting capabilities of the hybrid nanoparticles.
Main Methods:
- Surface functionalization of 1-NPs using cysteine residues (-NH2 and -SH groups).
- Covalent conjugation of Cadmium Telluride/Cadmium Sulfide (CdTe/CdS) QDs and Mal-formed Folate (Mal-FA).
- Characterization of hybrid nanoparticles (1-NPs-QDs-FA) for NIR fluorescence, in vitro cellular uptake, and in vivo tumor imaging.
Main Results:
- Successful preparation of 1-NPs-QDs-FA hybrid nanoparticles with NIR fluorescence emission at 734 nm.
- Demonstrated selective uptake of nanoparticles by FR-overexpressing tumor cells in vitro.
- Achieved selective FR-overexpressing tumor-targeted imaging in vivo.
Conclusions:
- This study presents the first example of oligomeric/inorganic hybrid nanoparticles for biomedical applications.
- The developed 1-NPs-QDs-FA nanoparticles show high selectivity for FR-overexpressing tumors.
- These hybrid nanoparticles represent a new class of biomaterials for advanced tumor-targeted imaging.
