聚乙二醇衍生物对氟尿苷-层状双金属氢氧化物纳米杂化物的表面修饰
首发时间:2014-10-31
摘要:层状双金属氢氧化物(LDH)的表面修饰对其作为纳米药物载体时的分散性、稳定性及生物相容性具有重要意义。本文以氟尿苷(FL)插层LDH(FL-LDH)纳米杂化物为模型体系,以具伪装隐形作用的聚乙二醇(PEG)衍生物聚乙二醇单甲醚癸二酸酯盐(MPS)为修饰剂,研究了药物-LDH纳米杂化物的表面修饰作用,制备出MPS修饰的FL-LDH(简记为FL-LDH-MPS)纳米杂化物,并进行了表征。结果表明,表面修饰可明显改善纳米杂化物的分散稳定性和药物缓释性能。由于PEG的生物兼容性和体内循环的"隐形"功能,这种药物输运体系具有重要应用前景。
关键词: 层状双金属氢氧化物 聚乙二醇 氟尿苷 纳米杂化物 表面修饰
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Surface modification of poly(ethylene glycol) derivative on Floxuridine-Layered Double Hydorxide (LDH) nanohybrid
Abstract:Surface modification of the layered double hydroxide (LDH) is of much importance for its stability, dispersity and biocompatibility as drug-carriers. In this paper, Floxuridine (FL) intercalated LDH (FL-LDH) was modified with polyethylene glycol monomethyl ether-sebacate salt (MPS). The obtained FL-LDH-MPS nanocomposites showed enhanced stability, dispersity and controlled drug release property. The obtained FL-LDH-MPS nanocomposites could have advantages as drug delivery system with controlled-release due to the biocompatible and water-soluble PEG shells with "stealth" function upon intravenous injection.
Keywords: Poly(ethylene glycol) Layered double hydroxides Floxuridine, Nanohybrid Surface modification
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No.4615072781110141****
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聚乙二醇衍生物对氟尿苷-层状双金属氢氧化物纳米杂化物的表面修饰
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