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Plasmonic nanodiamonds: targeted core-shell type nanoparticles for cancer cell thermoablation
I. Rehor, KL. Lee, K. Chen, M. Hajek, J. Havlik, J. Lokajova, M. Masat, J. Slegerova, S. Shukla, H. Heidari, S. Bals, NF. Steinmetz, P. Cigler,
Language English Country Germany
Document type Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't
- MeSH
- Ablation Techniques methods MeSH
- Biocompatible Materials pharmacokinetics MeSH
- Molecular Targeted Therapy methods MeSH
- HeLa Cells drug effects MeSH
- Hyperthermia, Induced methods MeSH
- Carbocyanines chemistry MeSH
- Laser Therapy methods MeSH
- Humans MeSH
- Nanoparticles chemistry MeSH
- Nanodiamonds chemistry MeSH
- Nanoshells chemistry MeSH
- Polyethylene Glycols chemistry MeSH
- Receptors, Transferrin metabolism MeSH
- Transferrin chemistry pharmacology MeSH
- Gold chemistry MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Research Support, N.I.H., Extramural MeSH
Targeted biocompatible nanostructures with controlled plasmonic and morphological parameters are promising materials for cancer treatment based on selective thermal ablation of cells. Here, core-shell plasmonic nanodiamonds consisting of a silica-encapsulated diamond nanocrystal coated in a gold shell are designed and synthesized. The architecture of particles is analyzed and confirmed in detail using electron tomography. The particles are biocompatibilized using a PEG polymer terminated with bioorthogonally reactive alkyne groups. Azide-modified transferrin is attached to these particles, and their high colloidal stability and successful targeting to cancer cells overexpressing the transferrin receptor are demonstrated. The particles are nontoxic to the cells and they are readily internalized upon binding to the transferrin receptor. The high plasmonic cross section of the particles in the near-infrared region is utilized to quantitatively ablate the cancer cells with a short, one-minute irradiation by a pulse 750-nm laser.
References provided by Crossref.org
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