We developed a magnetite nanoparticle-loaded polymeric nanoplatform for magnetically guided 10- hydroxycamptothecin(HCPT) delivery. The nanoplatform was fabricated by simultaneously incorporating magnetite nanoparti...We developed a magnetite nanoparticle-loaded polymeric nanoplatform for magnetically guided 10- hydroxycamptothecin(HCPT) delivery. The nanoplatform was fabricated by simultaneously incorporating magnetite nanoparticles(NPs) and HCPT into the polymer micelle self-assembled from methoxy polyethylene glycolpoly(D,L-lactide-co-glycolide)(MPEG-PLGA) copolymer. Successful loading of HCPT into the nanoplatform was confirmed by Fourier transform infrared(FTIR) spectroscopy. Subsequently, we examined the in vitro antitumor efficacy of free HCPT and nanoplatform against three different cancer cell lines HeLa, A549 and HepG2. Flow cytometric analysis was condkt ,ucted to reveal the cell apoptosis caused by free HCPT and nanoplatform. Finally, the magnetic targeting property of the nanoplatform was evaluated by a self-designed in vitro experiment.展开更多
基金Supported by Sino-French Advanced Research Project(PRA B02-07)Scientific and technological achievements promotion project of Guangzhou city(2006C13G0011)
基金Supported by the National Natural Science Foundation of China(Nos.30970719, 81000669), the Social Development Project of the Science and Technology Department of Jilin Province, China(No.20106031), the Project of Science and Technology Department of Changchun City, China(No.2009080-09SF02), the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20100061120077) and the China Postdoctoral Science Foundation(No.20100481048).
文摘We developed a magnetite nanoparticle-loaded polymeric nanoplatform for magnetically guided 10- hydroxycamptothecin(HCPT) delivery. The nanoplatform was fabricated by simultaneously incorporating magnetite nanoparticles(NPs) and HCPT into the polymer micelle self-assembled from methoxy polyethylene glycolpoly(D,L-lactide-co-glycolide)(MPEG-PLGA) copolymer. Successful loading of HCPT into the nanoplatform was confirmed by Fourier transform infrared(FTIR) spectroscopy. Subsequently, we examined the in vitro antitumor efficacy of free HCPT and nanoplatform against three different cancer cell lines HeLa, A549 and HepG2. Flow cytometric analysis was condkt ,ucted to reveal the cell apoptosis caused by free HCPT and nanoplatform. Finally, the magnetic targeting property of the nanoplatform was evaluated by a self-designed in vitro experiment.