1. Targeted Multifunctional Multimodal Protein-Shell Microspheres as Cancer Imaging Contrast Agents

    Targeted Multifunctional Multimodal Protein-Shell Microspheres as Cancer Imaging Contrast Agents

    Purpose In this study, protein-shell microspheres filled with a suspension of iron oxide nanoparticles in oil are demonstrated as multimodal contrast agents in magnetic resonance imaging (MRI), magnetomotive optical coherence tomography (MM-OCT), and ultrasound imaging. The development, characterization, and use of multifunctional multimodal microspheres are described for targeted contrast and therapeutic applications. Procedures A preclinical rat model was used to demonstrate the feasibility of the multimodal multifunctional microspheres as contrast agents in ultrasound, MM-OCT and MRI. Microspheres were functionalized with the RGD peptide ligand, which is targeted to αvβ3 integrin receptors that are over-expressed in tumors and atherosclerotic lesions ...

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