Journal
MOLECULAR IMAGING
Volume 17, Issue -, Pages -Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/1536012117749726
Keywords
animal PET; drug delivery; nanoparticle
Funding
- NIH Cancer Center Support Grant [P30 CA008748]
- National Institutes of Health [NIH 1 R01 HL125703, R01CA155432, R01CA204441, U54CA137788/U54CA132378]
- CNIC CardioImage program
- MSK Imaging and Radiation Sciences Program
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Reversible electroporation (RE) can facilitate nanoparticle delivery to tumors through direct transfection and from changes in vascular permeability. We investigated a radiolabeled liposomal nanoparticle (Zr-89-NRep) for monitoring RE-mediated liposomal doxorubicin (DOX) delivery in mouse tumors. Intravenously delivered Zr-89-NRep allowed positron emission tomography imaging of electroporation-mediated nanoparticle uptake. The relative order of Zr-89-NRep injection and electroporation did not result in significantly different overall tumor uptake, suggesting direct transfection and vascular permeability can independently mediate deposition of Zr-89-NRep in tumors. Zr-89-NRep and DOX uptake correlated well in both electroporated and control tumors at all experimental time points. Electroporation accelerated Zr-89-NRep and DOX deposition into tumors and increased DOX dosing. Reversible electroporation-related vascular effects seem to play an important role in nanoparticle delivery to tumors and drug uptake can be quantified with Zr-89-NRep.
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