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N-琥珀酰壳聚糖纳米颗粒耦合低密度脂蛋白用于蛇床子素靶向运输至低密度脂蛋白、富受体肿瘤

 

Authors Zhang CG, Zhu QL, Zhou Y, Liu Y, Chen WL, Yuan ZQ, Yang SD, Zhou XF, Zhu AJ, Zhang XN, Jin Y

Published Date June 2014 Volume 2014:9(1) Pages 2919—2932

DOI http://dx.doi.org/10.2147/IJN.S59799

Received 27 December 2013, Accepted 15 February 2014, Published 13 June 2014

Abstract: N-Succinyl-chitosan (NSC) was synthesized and NSC nanoparticles (NPs) with loaded osthole (Ost) (Ost/NSC-NPs) were prepared by emulsion solvent diffusion. Subsequently, low-density lipoprotein (LDL)-mediated NSC-NPs with loaded Ost (Ost/LDL-NSC-NPs) were obtained by coupling LDL with Ost/NSC-NPs through amide linkage. The average particle size of Ost/NSC-NPs was approximately 145 nm, the entrapment efficiency was 78.28%±2.06%, and the drug-loading amount was 18.09%±0.17%. The release of Ost from Ost/NSC-NPs in vitro showed a more evident sustained effect than the native material. The half maximal inhibitory concentration of Ost/LDL-NSC-NPs was only 16.23% that of the free Ost at 24 hours in HepG2 cells. Ost inhibited HepG2 cell proliferation by arresting cells in the synthesis phase of the cell cycle and by triggering apoptosis. Cellular uptake and subcellular localization in vitro and near-infrared fluorescence real-time imaging in vivo showed that Ost/LDL-NSC-NPs had high targeting efficacy. Therefore, LDL-NSC-NPs are a promising system for targeted Ost delivery to liver tumor.
Keywords: liver cancer, targeting efficacy, antitumor activity






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