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- W4361242749 abstract "<div>Abstract<p>Iron oxide nanoparticles offer a feasible tool for combined imaging and delivery of small interfering RNA (siRNA) to tumors, stimulating active interest in exploring different imaging and delivery platforms suitable for detection by a variety of modalities. In this study, we describe the synthesis and testing of a tumor-targeted nanodrug (MN-EPPT-siBIRC5) that is designed to specifically shuttle siRNA to human breast tumors. The nanodrug binds the tumor-specific antigen uMUC-1, which is found in >90% of human breast adenocarcinomas. MN-EPPT-siBIRC5 consists of superparamagnetic iron oxide nanoparticles [for magnetic resonance imaging (MRI)], the dye Cy5.5 (for near-IR optical imaging), peptides (EPPT) that specifically target uMUC-1, and a synthetic siRNA that targets the tumor-specific antiapoptotic gene <i>BIRC5</i>. Nanodrug uptake by human breast adenocarcinoma cells resulted in a significant downregulation of <i>BIRC5</i>. Following i.v. delivery into subcutaneous mouse models of breast cancer, the nanodrug showed a preferential tumor uptake, which could be visualized by MRI and near-IR optical imaging. Furthermore, MRI could be used to quantitatively monitor nanodrug bioavailability in the tumor tissue throughout the course of treatment. Intravenous injection of the agent once a week over 2 weeks resulted in the induction of considerable levels of necrosis and apoptosis in the tumors, translating into a significant decrease in tumor growth rate. Our strategy permits the simultaneous tumor-specific delivery of siRNA to tumors and the imaging of the delivery process. More generally, it illustrates the potential to apply this approach to many human cancer studies, including for basic tumor biology and therapy. Cancer Res; 70(19); 7553–61. ©2010 AACR.</p></div>" @default.
- W4361242749 created "2023-03-31" @default.
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- W4361242749 date "2023-03-30" @default.
- W4361242749 modified "2023-10-01" @default.
- W4361242749 title "Data from Image-Guided Breast Tumor Therapy Using a Small Interfering RNA Nanodrug" @default.
- W4361242749 doi "https://doi.org/10.1158/0008-5472.c.6500897.v1" @default.
- W4361242749 hasPublicationYear "2023" @default.
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