期刊
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS
卷 29, 期 4, 页码 1467-1479出版社
ELSEVIER
DOI: 10.1016/j.msec.2008.09.039
关键词
Magnetic nanoparticles; Breast cancer detection; Receptor-mediated endocytosis
资金
- National Science Foundation [DMR 0231418, DMI-0304180, DMI-0457602, DMR-0213706]
- NIH [EB 02122]
- State of New Jersey
- Pennington Biomedical Center
- Center for Advanced Microstructures and Devices
- NSF-EPSCoR [RII-03]
- DARPA [HR0011-04-C-0068]
- Pennsylvania Department of Community and Economic Development [20-906-0009]
This paper shows that superparamagnetic iron oxide nanoparticles (SPIONs) conjugated to luteinizing hormone releasing hormone (LHRH) (LHRH-SPIONs), can be used to target breast cancer cells. They also act as contrast enhancement agents during the magnetic resonance imaging of breast cancer xenografts. A combination of transmission electron microscopy (TEM) and spectrophotometric analysis was used in our experiments, to investigate the specific accumulation of the functionalized superparamagnetic iron oxide nanoparticles (SPIONs) in cancer cells. The contrast enhancement of conventional T2 images obtained from the tumor tissue and of breast cancer xenograft bearing mice is shown to be Much greater than that in saline controls, when the tissues were injected with LHRH-SPIONs. Magnetic anisotropy multi-CRAZED images of tissues extracted from mice injected with SPIONs were also found to have enhanced MRI contrast in breast cancer xenografts and metastases in the lungs. (C) 2008 Published by Elsevier B.V.
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