Pharmacokinetic Analysis of 111In-Labeled Liposomal Doxorubicin in Murine Glioblastoma after Blood-Brain Barrier Disruption by Focused Ultrasound

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Abstract

The goal of this study was to evaluate the pharmacokinetics of targeted and untargeted 111In-doxorubicin liposomes after these have been intravenously administrated to tumor-bearing mice in the presence of blood-brain barrier disruption (BBB-D) induced by focused ultrasound (FUS). An intracranial brain tumor model in NOD-scid mice using human brain glioblastoma multiforme (GBM) 8401 cells was developed in this study. 111In-labeled human atherosclerotic plaque-specific peptide-1 (AP-1)-conjugated liposomes containing doxorubicin (Lipo-Dox; AP-1 Lipo-Dox) were used as a microSPECT probe for radioactivity measurements in the GBM-bearing mice. Compared to the control tumors treated with an injection of 111In-AP-1 Lipo-Dox or 111In-Lipo-Dox, the animals receiving the drugs followed by FUS exhibited enhanced accumulation of the drug in the brain tumors (p<0.05). Combining sonication with drugs significantly increased the tumor-to-normal brain doxorubicin ratio of the target tumors compared to the control tumors. The tumor-to-normal brain ratio was highest after the injection of 111In-AP-1 Lipo-Dox with sonication. The 111In-liposomes micro-SPECT/CT should be able to provide important information about the optimum therapeutic window for the chemotherapy of brain tumors using sonication. © 2012 Yang et al.

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APA

Yang, F. Y., Wang, H. E., Liu, R. S., Teng, M. C., Li, J. J., Lu, M., … Wong, T. T. (2012). Pharmacokinetic Analysis of 111In-Labeled Liposomal Doxorubicin in Murine Glioblastoma after Blood-Brain Barrier Disruption by Focused Ultrasound. PLoS ONE, 7(9). https://doi.org/10.1371/journal.pone.0045468

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