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In vitro and in vivo study of fluorescent probe PLGA particles
prepared by premix membrane emulsification method
HU Tao1,2, SHI Fei-yan1,2, PAN Lin-mei1,2, ZHU Hua-xu1,2*, GUO Li-wei1,2*
(1.Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization,
Nanjing University of Chinese Medicine, Nanjing 210023, China;
2. Jiangsu Botanical Medicine Refinement Engineering Research Center, Nanjing University of
Chinese Medicine, Nanjing 210023, China)
[Abstract] Relatively uniform-sized nanoparticles made of poly (lactic-co-glycolic acid) (PLGA) were prepared by premix membrane emulsification method. After the drug loading property was completed, the dynamic tissue distribution of nanoparticles was recorded. With the average particle size and span as indexes, membrane pore size, number of passing membrane times, membrane pressure, volume ratio of oil-water phase and the concentration of poly(vinyl alcohol) (PVA) in external water phase were investigated by single factor test, the optimum preparation technology of blank PLGA nanlparticles was as following: pore size of SPG membrane was 1 μm, membrane pressure was 1.15 MPa, the number of passing membrane time was 3, the mass fraction of PVA of 2%, volume ratio of oil-water phase of 1∶5. Prepared nanoparticles were round with smooth surface, the mean diameter was 332.6 nm, span was 0.010, the confocal laser scanning microscope (CLSM) concluded that fluorescent substance is uniform composizion in PLGA nanoparticle, and the in vivo imaging technology in mice include that the nanoparticles show good liver and spleen targeting property.
[Key words] premix membrane emulsification; PLGA; nanoparticles; optimization of technology; fluorescent probe; targeting
doi:10.4268/cjcmm20142321
[責任編輯 馬超一]