Abstract
This study evaluated the tumor targeting and therapeutic efficacy of a novel theranostic agent (131)I-labeled immuno-gold-nanoparticle ((131)I-C225-AuNPs-PEG) for high epidermal growth factor receptor (EGFR)-expressed A549 human lung cancer. Confocal microscopy demonstrated the specific uptake of C225-AuNPs-PEG in A549 cells. (131)I-C225-AuNPs-PEG induced a significant reduction in cell viability, which was not observed when incubated with AuNPs-PEG and C225-AuNPs-PEG. MicroSPECT/CT imaging of tumor-bearing mice after intravenous injection of (123)I-C225-AuNPs-PEG revealed significant radioactivity retention in tumor suggested that (131)I-labeled C225-conjugated radioimmuno-gold-nanoparticles may provide a new approach of targeted imaging and therapy towards high EGFR-expressed cancers.
Copyright © 2013. Published by Elsevier Ltd.
Publication types
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Evaluation Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Antibodies, Monoclonal, Humanized / chemistry*
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Antibodies, Monoclonal, Humanized / therapeutic use
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Antibodies, Monoclonal, Humanized / toxicity
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Antineoplastic Agents / chemistry*
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Antineoplastic Agents / therapeutic use
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Antineoplastic Agents / toxicity
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Cell Line, Tumor
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Cell Survival / drug effects
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Cetuximab
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Disease Models, Animal
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Drug Evaluation, Preclinical
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ErbB Receptors / antagonists & inhibitors*
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ErbB Receptors / metabolism
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Gold / chemistry*
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Humans
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Injections, Intravenous
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Iodine Radioisotopes / chemistry
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Lung Neoplasms / diagnostic imaging
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Lung Neoplasms / drug therapy
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Metal Nanoparticles / chemistry*
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Mice
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Microscopy, Confocal
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Polyethylene Glycols / chemistry
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Radiopharmaceuticals / chemistry*
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Radiopharmaceuticals / therapeutic use
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Radiopharmaceuticals / toxicity
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Tomography, Emission-Computed, Single-Photon
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Tomography, X-Ray Computed
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Transplantation, Heterologous
Substances
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Antibodies, Monoclonal, Humanized
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Antineoplastic Agents
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Iodine Radioisotopes
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Radiopharmaceuticals
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Polyethylene Glycols
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Gold
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ErbB Receptors
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Cetuximab