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Detectability of Her2 Positive Tumors Using Monoclonal Antibody Conjugated Iron Oxide Nanoparticles in MRI

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Detecting an imaging signal from a small number of cells is vital when a disease needs to be diagnosed in an early stage of development. Molecular and genetic information from cancer cell types provide a guide for specific imaging based on gene expression and their activities on the cell membrane. Various physical and biological parameters affect the capability of an imaging system to provide an efficient procedure for biomarker imaging. Iron oxide based magnetic nanoparticles conjugated to breast cancer monoclonal antibody (Her2) were used as a specific contrast agent for detection of the tumor cells in nude mice models. All processes for the nanoparticle synthesis, antibody development, and conjugation strategies were designed and evaluated in the current work. The final engineered product was found to be without precipitate containing 20 μg antibody/mg magnetic nanoparticles at 10 mg Fe/ml solution. This contrast agent has a high affinity for the BT474 breast cancer cells. MRI images of nude mice bearing tumor cells confirm this specific biomarker based imaging protocol.
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Keywords: BREAST CANCER; HER2/NEU; HERCEPTIN; MRI CONTRAST AGENT; NANOMAGNETIC PARTICLES; USPIO

Document Type: Research Article

Publication date: June 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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