Surface modification of Mitoxantrone-loaded PLGA nanospheres with chitosan

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	Surface modification of Mitoxantrone-loaded PLGA nanospheres with chitosan
	Chen, H. L. ; Yang, W. Z. ; Chen, H. ; Liu, L. R. ; Gao, F. P. ; Yang, X. D. ; Jiang, Q. ; Zhang, Q. Q. ; Wang, Y. S. ; Zhang QQ(张其清)
刊名	http://dx.doi.org/10.1016/j.colsurfb.2009.05.020
	2009-10-15
关键词	NANOPARTICLES DELIVERY MICROPARTICLES ADSORPTION CANCER CELLS MICROSPHERES FORMULATION PARTICLES CARRIERS
英文摘要	The National Key Scientific Program [2006CB933300]; The purpose of this research was to develop polylactic-co-glycolic acid (PLGA) nanospheres surface modified with chitosan (CS). Mitoxantrone- (MTO-) loaded PLGA nanospheres were prepared by a solvent evaporation technique. The PLGA nanospheres surface was modified with CS by two strategies (adsorption and covalent binding). PLGA nanospheres of 248.4 +/- 21.0 nm in diameter characterized by the laser light scattering technique, scanning electron microscopy (SEM) are spherical and its drug encapsulation efficiency is 84.1 +/- 3.4%. Zeta potential of unmodified nanospheres was measured to be negative -21.21 +/- 2.13 mV. The positive zeta potential of modified nanospheres reveals the presence of CS on the surface of the modified nanospheres. Modified nanospheres were characterized for surface chemistry by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR). FT-IR spectra exhibited peaks at 3420 cm(-1) and 1570 cm(-1), XPS spectra shows the N 1s (atomic orbital is of nitrogen) region of the surface of the nanospheres, corresponding to the primary amide of CS. In vitro drug release demonstrated that CS-modified nanospheres have many advantages such as prolonged drug release property and decreased the burst release over the unmodified nanospheres, and the modified nanospheres by covalent binding method could achieve the release kinetics of a relatively constant release. These data demonstrate high potential of CS-modified PLGA nanospheres for the anticancer drug carrier. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/71445]
专题	医学院－已发表论文
推荐引用方式 GB/T 7714	Chen, H. L.,Yang, W. Z.,Chen, H.,et al. Surface modification of Mitoxantrone-loaded PLGA nanospheres with chitosan[J]. http://dx.doi.org/10.1016/j.colsurfb.2009.05.020,2009.
APA	Chen, H. L..,Yang, W. Z..,Chen, H..,Liu, L. R..,Gao, F. P..,...&张其清.(2009).Surface modification of Mitoxantrone-loaded PLGA nanospheres with chitosan.http://dx.doi.org/10.1016/j.colsurfb.2009.05.020.
MLA	Chen, H. L.,et al."Surface modification of Mitoxantrone-loaded PLGA nanospheres with chitosan".http://dx.doi.org/10.1016/j.colsurfb.2009.05.020 (2009).