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Multimodal imaging probe for targeting cancer cells using uMUC-1 aptamer

Authors
 강원준 
Citation
 Colloids and Surfaces B: Biointerfaces, Vol.136 : 134~140, 2015 
Journal Title
 Colloids and Surfaces B: Biointerfaces 
ISSN
 0927-7765 
Issue Date
2015
Abstract
For adequate cancer therapy, newer imaging modalities with more specific ligands for unique targets are crucial. Underglycosylated mucin-1 (uMUC-1) antigen is an early marker of tumor development and is widely overexpressed on most tumors. A combination of nanotechnology with optical, radionuclide, and magnetic resonance (MR) imaging has great potential to improve cancer diagnosis and therapy. In this study, a multimodal nanoparticle imaging system was developed that can be used for optical, MR and positron emission tomography (PET) imaging. Cobalt ferrite magnetic nanoparticles surrounded by fluorescent rhodamine (designated MF) within a silica shell matrix were conjugated with an aptamer targeting uMUC-1 (designated MF-uMUC-1) and further labeled by 68Ga (designated MFR-uMUC-1) with the help of a p-SCN-bn-NOTA chelating agent, resulting in single multimodal nanoparticles. The resultant nanoparticles are spherical and monodispersed, as revealed by transmission electron microscopy. The MFR-uMUC-1 nanoparticle showed specific and dose-dependent fluorescent, radioisotope and MR signals targeting BT-20 cells expressing uMUC-1. In vivo targeting and multimodal imaging in tumor-bearing nude mice also showed great specificity for targeting cancers with MFR-uMUC-1. The MFR-uMUC-1 probe could be used as a single multimodal probe to visualize cancer cells by means of optical, radionuclide and MR imaging.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/141192
DOI
10.1016/j.colsurfb.2015.09.004
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Nuclear Medicine
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0927776515301739
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