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Supramolecular Fluorescent Nanoparticles for Targeted Cancer Imaging
Ruijiao Dong1, Hongying Chen2, Dali Wang1
1School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
ACS Macro Letters
|May 24, 2022
Summary
Researchers developed novel calcein-based fluorescent nanoparticles for cancer imaging. These nanoparticles offer enhanced fluorescence and targeted delivery, improving cancer detection efficiency.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Materials Science
Background:
- Supramolecular fluorescent nanoparticles offer potential for advanced biomedical applications.
- Developing nanoparticles with both high fluorescence and targeted delivery is crucial for effective cancer imaging.
- Controlling nanoparticle size and preventing fluorescence quenching are key challenges.
Purpose of the Study:
- To create novel calcein-based supramolecular fluorescent nanoparticles.
- To achieve cancer-specific delivery and enhanced imaging efficiency.
- To investigate the role of host-guest interactions in nanoparticle properties.
Main Methods:
- Utilized a "bricks and mortar" strategy for nanoparticle synthesis.
- Controlled nanoparticle size by adjusting the molar ratio of adamantane-functionalized calcein (CA-AD) and β-cyclodextrin-grafted branched polyethylenimine (PEI-CD).
- Incorporated folate receptors for targeted cancer cell delivery.
Main Results:
- Successfully prepared calcein-based supramolecular fluorescent nanoparticles.
- Demonstrated effective control over nanoparticle size via molar ratio tuning.
- Showcased suppressed π-π stacking and fluorescence self-quenching through β-cyclodextrin/adamantane host-guest interactions, leading to highly fluorescent nanoparticles.
- Achieved excellent cancer imaging efficiency due to folate receptor-mediated targeting.
Conclusions:
- Calcein-based supramolecular fluorescent nanoparticles can be effectively prepared using a "bricks and mortar" approach.
- Host-guest interactions are critical for enhancing nanoparticle fluorescence in aqueous environments.
- These nanoparticles show significant promise for targeted cancer imaging applications.
