Abstract
Magnetic nanoparticles in colloid form are attractive materials that have been widely exploited in medicine for diagnostic imaging and therapeutic applications. Iron oxide nanoparticle functionalized with molecular marker is a new class of imaging agent to visualize the specific molecular event inside living animal or human. MT1-MMP plays a critical role in tumor progression and metastasis and has become a promising diagnostic cell surface marker. Therefore, our purpose was to obtain the MR image of MT1-MMP in cancer bearing nude mice using biotinylated monoclonal anti-MT1-MMP antibody conjugated streptavidinylated ultrasmall superparamagnetic iron oxides (USPIOs) (MT1-MMP-USPIOs). The results showed strong MR contrast change in the human liver cancer (SK-HEP-1 cells) but not in the human colon cancer (HT-29 cells) after intravenous injection of MT1-MMP-USPIOs. Furthermore, Prussian Blue staining assessed the internalized MT1-MMP-USPIOs into the SK-HEP-1 derived tumor cells. Taken together, our results suggest that the targeting of an early diagnosis of human liver cancer (SK-HEP-1 cells) is feasible by using MT1-MMP-USPIOs.
Original language | English |
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Pages (from-to) | 647-650 |
Number of pages | 4 |
Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
Volume | 313-314 |
DOIs | |
State | Published - 1 Feb 2008 |
Keywords
- Membrane type1-matrix metalloproteinase (MT1-MMP)
- Molecular imaging
- MRI
- Nude mouse
- Tumor