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I-131 Labeled Copper Sulfide-Loaded Microspheres to Treat Hepatic Tumors via Hepatic Artery Embolization

Posted by Kevin Yang ⎜ Jan 11, 2018 ⎜ Industry

Transcatheter hepatic artery embolization therapy is a minimally invasive alternative for treating inoperable liver cancer, but recurrence is frequent. Multifunctional agents could offer an opportunity for tumor eradication. In this article, the researchers aimed to synthesize poly (lactic-co-glycolic acid) (PLGA) microspheres encapsulating hollow CuS nanoparticles (HCuSNPs) and paclitaxel (PTX) that were then labeled with radioiodine-131 (131I) to produce 131I-HCuSNPs-MS-PTX. This compound combines the multi-theranostic properties of chemotherapy, radiotherapy, and photothermal therapy. The researchers investigated the value of therapeutic and imaging of 131I-HCuSNPs-MS-PTX in rats bearing Walker-256 tumor transplanted in the liver. After the intra-arterial (IA) injection of 131I-HCuSNPs-MS-PTX, 18F-Fluorodeoxyglucose (18F-FDG) micro-positron emission tomography/computed tomography (micro-PET/CT) imaging was used to monitor the therapeutic effect. Remarkably, embolization therapy in combination with chemotherapy, radiotherapy and photothermal therapy offered by 131I-HCuSNPs-MS-PTX completely ablated the transplanted hepatic tumors at a relatively low dose. This study suggests that there is a clinical theranostic potential for imaging-guided arterial embolization with 131I-HCuSNPs-MS-PTX for the treatment of liver tumors.

Liu Q, Qian Y, Li P, Zhang S, Liu J, Sun X, Fulham M, Feng D, Huang G, Lu W, Song S. 131I-Labeled Copper Sulfide-Loaded Microspheres to Treat Hepatic Tumors via Hepatic Artery Embolization. Theranostics 2018; 8(3):785-799. doi:10.7150/thno.21491. Available from