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Multifunctional Polymeric Micelles as Cancer-Targeted, MRI-Ultrasensitive Drug Delivery Systems

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journal contribution
posted on 2006-11-08, 00:00 authored by Norased Nasongkla, Erik Bey, Jimin Ren, Hua Ai, Chalermchai Khemtong, Jagadeesh Setti Guthi, Shook-Fong Chin, A. Dean Sherry, David A. Boothman, Jinming Gao
We describe the development of multifunctional polymeric micelles with cancer-targeting capability via αvβ3 integrins, controlled drug delivery, and efficient magnetic resonance imaging (MRI) contrast characteristics. Doxorubicin and a cluster of superparamagnetic iron oxide (SPIO) nanoparticles were loaded successfully inside the micelle core. The presence of cRGD on the micelle surface resulted in the cancer-targeted delivery to αvβ3-expressing tumor cells. In vitro MRI and cytotoxicity studies demonstrated the ultrasensitive MRI imaging and αvβ3-specific cytotoxic response of these multifunctional polymeric micelles.

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