Neuroblastoma-targeting triangular Gadolinium Oxide (cas 11129-31-0) nanoplates for precise excision of cancer
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Add time:07/19/2019 Source:sciencedirect.com
Neuroblastoma accounts for 8–10% of malignancies in infants and children. It is urgent to develop an appropriate theranostic agent for effective diagnosis and therapy of neuroblastoma. Herein, we constructed RVG peptide and IRDye800-conjugated bovine serum albumin-coated triangular Gadolinium Oxide (cas 11129-31-0) nanoplates (RVG&IRDye800-Gd2O3 TNs) as a targeting MRI agent for the diagnosis of neuroblastoma preoperation and a fluorescence imaging agent for the guidance of the precise excision of the neuroblastoma in surgery. RVG&IRDye800-Gd2O3 TNs have uniform edge length. The RVG&IRDye800-Gd2O3 TNs show remarkably enhanced affinity to both mouse- and human-derived neuroblastoma cells compared with IRDye800-Gd2O3 TNs (3.07-fold and 3.02-fold, respectively). Because of the increased accumulation in tumor cells, RVG&IRDye800-Gd2O3 TNs exhibit signals threefold to fivefold higher than the surrounding normal tissues, which is propitious to the diagnosis of neuroblastoma preoperation and provides real-time visual guidance of the precise excision of the neuroblastoma. Most importantly, with the guidance of the fluorescence imaging agent, the survival rate increased from 0% to 80% 42 days after surgery compared with that in conventional surgery. These findings indicated that the RVG peptide combined with IRDye800-Gd2O3 TNs has the potential to improve the diagnosis and treatment of patients with neuroblastoma.
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