time-evolution contrast of target mri using high-stability antibody functionalized magnetic nanoparticles: an animal model
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2014
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Abstract
In this work, high-quality antibody functionalized Fe3O4 magnetic nanoparticles are synthesized. Such physical characterizations as particle morphology, particle size, stability, and relaxivity of magnetic particles are investigated. The immunoreactivity of biofunctionalized magnetic nanoparticles is examined by utilizing immunomagnetic reduction. The results show that the mean diameter of antibody functionalized magnetic nanoparticles is around 50 nm, and the relaxivity of the magnetic particles is 145 (mM·s)−1. In addition to characterizing the magnetic nanoparticles, the feasibility of using the antibody functionalized magnetic nanoparticles for the contrast medium of target magnetic resonance imaging is investigated. These antibody functionalized magnetic nanoparticles are injected into mice bearing with tumor. The tumor magnetic-resonance image becomes darker after the injection and then recovers 50 hours after the injection. The tumor magnetic-resonance image becomes the darkest at around 20 hours after the injection. Thus, the observing time window for the specific labeling of tumors with antibody functionalized magnetic nanoparticles was found to be 20 hours after injecting biofunctionalized magnetic nanoparticles into mice. The biopsy of tumor is stained after the injection to prove that the long-term darkness of tumor magnetic-resonance image is due to the specific anchoring of antibody functionalized magnetic nanoparticles at tumor.
| Reference Key |
huang2014journaltime-evolution
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| Authors | ;K. W. Huang;S. Y. Yang;H. E. Horng;J. J. Chieh;H. H. Chen;C. C. Wu;J. H. Chen;I.T. Lin;C. C. Yang;H. C. Yang |
| Journal | reproductive biology and endocrinology |
| Year | 2014 |
| DOI |
10.1155/2014/351848
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| URL | |
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