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van Vlerken LE , Duan Z , Little SR , Seiden MV , Amiji MM
Biodistribution and pharmacokinetic analysis of paclitaxel and ceramide administered in multifunctional polymer-blend nanoparticles in drug resistant breast cancer model
Molecular Pharmaceutics. 2008 Jul-Aug;5(4) :516-526
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In this study, we have investigated the biodistribution and pharmacokinetic analysis of paclitaxel (PTX) and the apoptotic signaling molecule, C-6-ceramide (CER), when administered in a multifunctional polymer-blend nanoparticle formulation to female nude mice bearing an orthotopic drug sensitive MCF7 and multidrug resistant MCF7(TR) (MDR-1 positive) human breast adenocarcinoma. A polymer-blend nanoparticle system was engineered to incorporate temporally controlled sequential release of the combination drug payload. Hereby, PTX was encapsulated in the pH-responsive rapid releasing polymer, poly(beta-amino ester) (PbAE), while CER was present in the slow releasing polymer, poly(D,L-lactide-co-glycolide) (PLGA) with n these blend nanoparticles. When particle formulations were administered intravenously to MCF7 and MCF7TR tumor bearing mice, higher concentrations of PTX were found in the blood due to longer retention time and an enhanced tumor accumulation relative to admini!
ISI Document Delivery No.: 334MQ van Vlerken, Lilian E. Duan, Zhenfeng Little, Steven R. Seiden, Michael V. Amiji, Mansoor M. AMER CHEMICAL SOC