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熊果酸/PF127/TPGS-多柔比星混合纳米胶束的制备及其体外释
药特性研究 Δ
陈洋洋 ,耿 雪,屈子卉,李雪莹,王 琪,霍元子,郝若祎,阎雪莹(黑龙江中医药大学药学院,哈尔滨
*
#
150040)
中图分类号 R943;R944.9 文献标志码 A 文章编号 1001-0408(2019)20-2789-07
DOI 10.6039/j.issn.1001-0408.2019.20.11
摘 要 目的:制备熊果酸(UA)/Pluronic F127(PF127)/聚乙二醇维生素E琥珀酸酯(TPGS)-多柔比星(DOX)混合纳米胶束,并对
其进行表征和体外释药特性研究。方法:采用薄膜水化法制备UA/PF127/TPGS纳米胶束;以UA包封率为指标,结合单因素试验
结果,通过L9 (3)正交试验设计对处方中的UA投药量、PF127与TPGS的摩尔比、水化温度、水化体积进行优化并验证。在琥珀酰
4
化TPGS的基础上,合成TPGS-DOX,与UA/PF127/TPGS混合制备UA/PF127/TPGS-DOX混合纳米胶束,考察其外观、粒径、临界
胶束浓度(PF127/TPGS),采用透析袋扩散法考察其体外释药行为。结果:UA/PF127/TPGS纳米胶束的最优制备工艺为UA投药
量 8 mg、PF127 与 TPGS 的摩尔比 3 ∶ 7、水化温度 50 ℃、水化体积 4 mL,所得纳米胶束中 UA 的平均包封率为 89.00%(RSD=
0.43%,n=3)。在此基础上所制 UA/PF127/TPGS-DOX 混合纳米胶束溶液澄清且带有乳光;呈类球形且大小均匀,平均粒径为
(115.00±9.42)mm;PF127/TPGS(摩尔比3∶7)的临界胶束浓度为0.001 3%。该混合纳米胶束中UA、DOX的体外释放均较其原料
药或对照品明显减缓,胶束中两种药物的释药过程均符合Weibull方程。结论:本研究成功制备了UA/PF127/TPGS-DOX混合纳
米胶束,其粒径均匀且系统稳定性好,并具有较好的缓释效果。
关键词 熊果酸;多柔比星;Pluronic F127;聚乙二醇维生素E琥珀酸酯;混合纳米胶束;正交试验;体外释放
Study on Preparation and in vitro Release Characteristic of Ursolic Acid/PF127/TPGS-doxorubicin Mixed
Nanomicelles
CHEN Yangyang,GENG Xue,QU Zihui,LI Xueying,WANG Qi,HUO Yuanzi,HAO Ruoyi,YAN Xueying
(College of Pharmacy,Heilongjiang University of Traditional Chinese Medicine,Harbin 150040,China)
ABSTRACT OBJECTIVE:To prepare Ursolic acid(UA)/Pluronic F127(PF127)/TPGS-doxorubicin(DOX)mixed nanomicelles,
and to characterize it and study its in vitro release behavior. METHODS:UA/PF127/TPGS nanomicelles were prepared by thin film
hydration method. Using encapsulation efficiency of UA as index,combined with the results of single factor tests,L9(3)
4
orthogonal test was used to optimize drug dosage of UA,molar ratio of PF127 to TPGS,hydration temperature and hydration
volume,validation test was performed. On the basis of succinylated TPGS,TPGS-DOX was synthesized and mixed with UA/
PF127/TPGS to prepare UA/PF127/TPGS-DOX mixed nanomicelles,the appearance,particle size and critical micelle concentration
(PF127/TPGS) were investigated. The drug release behavior was examined by dialysis bag diffusion method. RESULTS:The
optimal preparation technology of UA/PF127/TPGS nanomicelles was as follows as drug dosage of UA 8 mg,molar ratio of PF127
to TPGS 3 ∶ 7,hydration temperature 50 ℃,hydration volume 4 mL. Average encapsulation efficiency of UA in nanomicelles was
89.00%(RSD=0.43%,n=3). The prepared UA/PF127/TPGS-DOX mixed nanomicelles solution was clear with opalescence. The
nanomicelles were spherical and uniform in size;average particle size was(115.00±9.42)nm;critical micelle concentration of
PF127/TPGS(molecular ratio 3 ∶ 7)was 0.001 3%. The in vitro drug release of UA and DOX in the mixed nanomicelles was
significantly slowed down,compared with raw materials or substance control. The drug release process of the two drugs in the
nanomicelles conformed to Weibull equation. CONCLUSIONS: UA/PF127/TPGS-DOX mixed nanomicelles are successfully
prepared with uniform particle size,good stability and good sustained-release effect.
KEYWORDS Ursolic acid;Doxorubicin;Pluronic F127;TPGS;Mixed nanomicelles;Orthogonal test;Release in vitro
Δ 基金项目:黑龙江省自然科学基金(重点项目)资助项目(No. 熊果酸(Ursolic acid,UA)属于五环三萜类化合物,
ZD2016019) 具有广泛的药理活性,如抗肿瘤、抗氧化、抗炎、抗高脂
*硕士研究生。研究方向:缓控释制剂、中药体内代谢、中药新药 血症等,但由于其水溶性差、生物利用度低,使得该化合
研发。电话:0451-87266988。E-mail:1561231451@qq.com [1-2]
物的应用受到极大限制 。多柔比星(Doxorubicin,
# 通信作者:教授,硕士生导师,博士。研究方向:缓控释制剂、中
DOX)是从链球菌色素代谢物中分离出来的一种蒽环类
药 体 内 代 谢 、中 药 新 药 研 发 。 电 话 :0451-87266988。 E-mail:
15159267@qq.com 化合物,被认为是最有效的化疗药之一,是诸多类型癌
中国药房 2019年第30卷第20期 China Pharmacy 2019 Vol. 30 No. 20 ·2789 ·

