Catalytic activity imperative for nanoparticle dose enhancement in photon and proton therapy.

Autor: Gerken LRH; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland.; Particles Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland., Gogos A; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland.; Particles Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland., Starsich FHL; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland.; Particles Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland., David H; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland., Gerdes ME; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland., Schiefer H; Department of Radiation Oncology, Cantonal Hospital St. Gallen (KSSG), Rorschacherstrasse 95, CH-9007, St. Gallen, Switzerland., Psoroulas S; Center for Proton Therapy, Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232, Villigen PSI, Switzerland., Meer D; Center for Proton Therapy, Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232, Villigen PSI, Switzerland., Plasswilm L; Department of Radiation Oncology, Cantonal Hospital St. Gallen (KSSG), Rorschacherstrasse 95, CH-9007, St. Gallen, Switzerland.; Department of Radiation Oncology, University Hospital Bern (Inselspital), 3010, Bern, Switzerland., Weber DC; Center for Proton Therapy, Paul Scherrer Institute (PSI), Forschungsstrasse 111, 5232, Villigen PSI, Switzerland.; Department of Radiation Oncology, University Hospital Bern (Inselspital), 3010, Bern, Switzerland.; Department of Radiation Oncology, University Hospital Zürich, 8091, Zürich, Switzerland., Herrmann IK; Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland. ingeh@ethz.ch.; Particles Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland. ingeh@ethz.ch.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Jun 06; Vol. 13 (1), pp. 3248. Date of Electronic Publication: 2022 Jun 06.
DOI: 10.1038/s41467-022-30982-5
Abstrakt: Nanoparticle-based radioenhancement is a promising strategy for extending the therapeutic ratio of radiotherapy. While (pre)clinical results are encouraging, sound mechanistic understanding of nanoparticle radioenhancement, especially the effects of nanomaterial selection and irradiation conditions, has yet to be achieved. Here, we investigate the radioenhancement mechanisms of selected metal oxide nanomaterials (including SiO 2 , TiO 2 , WO 3 and HfO 2 ), TiN and Au nanoparticles for radiotherapy utilizing photons (150 kVp and 6 MV) and 100 MeV protons. While Au nanoparticles show outstanding radioenhancement properties in kV irradiation settings, where the photoelectric effect is dominant, these properties are attenuated to baseline levels for clinically more relevant irradiation with MV photons and protons. In contrast, HfO 2 nanoparticles retain some of their radioenhancement properties in MV photon and proton therapies. Interestingly, TiO 2 nanoparticles, which have a comparatively low effective atomic number, show significant radioenhancement efficacies in all three irradiation settings, which can be attributed to the strong radiocatalytic activity of TiO 2 , leading to the formation of hydroxyl radicals, and nuclear interactions with protons. Taken together, our data enable the extraction of general design criteria for nanoparticle radioenhancers for different treatment modalities, paving the way to performance-optimized nanotherapeutics for precision radiotherapy.
(© 2022. The Author(s).)
Databáze: MEDLINE
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