RRC ID 51787
Author Gao Z, Horiguchi Y, Nakai K, Matsumura A, Suzuki M, Ono K, Nagasaki Y.
Title Use of boron cluster-containing redox nanoparticles with ROS scavenging ability in boron neutron capture therapy to achieve high therapeutic efficiency and low adverse effects.
Journal Biomaterials
Abstract A boron delivery system with high therapeutic efficiency and low adverse effects is crucial for a successful boron neutron capture therapy (BNCT). In this study, we developed boron cluster-containing redox nanoparticles (BNPs) via polyion complex (PIC) formation, using a newly synthesized poly(ethylene glycol)-polyanion (PEG-polyanion, possessing a (10)B-enriched boron cluster as a side chain of one of its segments) and PEG-polycation (possessing a reactive oxygen species (ROS) scavenger as a side chain of one of its segments). The BNPs exhibited high colloidal stability, selective uptake in tumor cells, specific accumulation, and long retention in tumor tissue and ROS scavenging ability. After thermal neutron irradiation, significant suppression of tumor growth was observed in the BNP-treated group, with only 5-ppm (10)B in tumor tissues, whereas at least 20-ppm (10)B is generally required for low molecular weight (LMW) (10)B agents. In addition, increased leukocyte levels were observed in the LMW (10)B agent-treated group after thermal neutron irradiation, and not in BNP-treated group, which might be attributed to its ROS scavenging ability. No visual metastasis of tumor cells to other organs was observed 1 month after irradiation in the BNP-treated group. These results suggest that BNPs are promising for enhancing the BNCT performance.
Volume 104
Pages 201-12
Published 2016-10-1
DOI 10.1016/j.biomaterials.2016.06.046
PII S0142-9612(16)30306-4
PMID 27467416
MeSH Animals Boron / administration & dosage* Boron / adverse effects Boron / chemistry Boron Neutron Capture Therapy / adverse effects Boron Neutron Capture Therapy / methods* Cell Line, Tumor Free Radical Scavengers / administration & dosage* Isotopes / administration & dosage Isotopes / adverse effects Male Mice Mice, Inbred BALB C Nanoparticles / administration & dosage* Neoplasms, Experimental / pathology Neoplasms, Experimental / radiotherapy* Neoplasms, Radiation-Induced / etiology Neoplasms, Radiation-Induced / prevention & control* Radiopharmaceuticals / administration & dosage Radiopharmaceuticals / adverse effects Radiopharmaceuticals / chemistry Reactive Oxygen Species / metabolism* Treatment Outcome
IF 10.273
Times Cited 26
Human and Animal Cells Colon-26(RCB2657)