Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 23, Issue 11, Pages 3180-3185Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2013.04.002
Keywords
Gold nanoparticle; Epidermal growth factor receptor; Cetuximab; SPECT
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Funding
- Department of Health, Taipei City Government, Taiwan [10201-62-066]
- Institute of Nuclear Energy Research, Taiwan
- National Research Program for Biopharmaceuticals (NRPB) at the National Science Council (NSC) of Taiwan
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This study evaluated the tumor targeting and therapeutic efficacy of a novel theranostic agent I-131-labeled immuno-gold-nanoparticle (I-131-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. I-131-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 I-123-C225-AuNPs-PEG revealed significant radioactivity retention in tumor suggested that I-131-labeled C225-conjugated radioimmuno-gold-nanoparticles may provide a new approach of targeted imaging and therapy towards high EGFR-expressed cancers. (C) 2013 Elsevier Ltd. All rights reserved.
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