| 奈妥吡坦-聚乙二醇聚乳酸共聚物纳米粒的制备与表征 |
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| 引用本文： | 王淑娟,刘玉,李阳,和龙,苟马玲.奈妥吡坦-聚乙二醇聚乳酸共聚物纳米粒的制备与表征[J].四川大学学报(医学版),2019,50(6):896-900. |
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| 作者姓名： | 王淑娟 刘玉 李阳 和龙 苟马玲 |
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| 作者单位： | 四川大学肿瘤中心生物治疗研究室 成都610041;长春工业大学化工学院 长春130012;国药一心制药有限公司 长春130016;四川大学肿瘤中心生物治疗研究室 成都610041;北京宽厚医药科技有限公司 北京100176 |
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| 基金项目： | 四川大学华西医院学科卓越发展1·3·5工程项目ZYYC08007北京宽厚医药科技有限公司合作项目16H0790 |
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| 摘 要： | 目的 采用聚乙二醇聚乳酸嵌段共聚物(mPEG-PDLLA)提高奈妥吡坦(netupitant)的水溶性，为开发获得一种奈妥吡坦注射液提供实验基础。 方法 采用薄膜水化法制备包载奈妥吡坦的mPEG-PDLLA纳米粒(NT/mPEG-PDLLA-NPs)，以载药量和粒径为指标，通过单因素考察优化处方(奈妥吡坦与mPEG-PDLLA的药质比)和工艺(成膜温度和时间)。采用激光散射粒度仪和透射电子显微镜对NT/mPEG-PDLLA-NPs的粒径、电位、形态进行表征，采用MTT法对纳米粒的细胞毒性进行表征。 结果 NT/mPEG-PDLLA-NPs的最佳处方和工艺为:奈妥吡坦与mPEG-PDLLA药质比为1:6, 成膜温度为55 ℃, 成膜时间为30 min。此条件下制备得到的NT-mPEG-PDLLA-NPs呈淡蓝色透明液体，载药量为14%，药物质量浓度高达10 mg/mL，平均粒径58 nm，电位-0.29 mV，电镜下观察纳米粒呈球形或类球形颗粒，药物包载未显著改变奈妥吡坦的细胞毒性。 结论 成功制备了NT/mPEG-PDLLA-NPs，显著提高了奈妥吡坦的水溶性(10 mg/mL)，为开发奈妥吡坦的可注射制剂提供了潜在可行的方法。
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| 关 键 词： | 奈妥吡坦 水溶性 聚乙二醇聚乳酸嵌段共聚物 纳米粒 止吐药 |
| 收稿时间： | 2019-05-29 |
Preparation and Characterization of Netupitant-loaded mPEG-PDLLA Nanoparticles |
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| WANG Shu-juan,LIU Yu,LI Yang,HE Long,GOU Ma-ling.Preparation and Characterization of Netupitant-loaded mPEG-PDLLA Nanoparticles[J].Journal of West China University of Medical Sciences,2019,50(6):896-900. |
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| Authors: | WANG Shu-juan LIU Yu LI Yang HE Long GOU Ma-ling |
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| Affiliation: | 1.Department of Biotherapy, Cancer Center, Sichuan University, Chengdu 610041, China |
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| Abstract: | Objective Methoxy poly (ethylene glycol)-poly (lactic acid) (mPEG-PDLLA) was used to increase water solubility of netupitant, thus to provide the experimental basis for development of the injection of netupitant. Methods Film hydration method was ultilized to prepare the netupitant-loaded mPEG-PDLLA nanoparticles (NT/mPEG-PDLLA-NPs). The preparation formulation and technology were optimized based on the single factor tests by investigating the effect of netupitant/mPEG-PDLLA mass ratio (m/m), filming temperature and time on the mean particle diameters and loading capacities. The size distributions and Zeta potentials of NT/mPEG-PDLLA-NPs were investigated using dynamic light scattering analysis, and the morphology was observed under the transmission electron microscope (TEM). The cytotoxicity of NT/mPEG-PDLLA-NPs evaluated by MTT method. Results The optimal NT/mPEG-PDLLA-NPs were achieved at the netupitant/mPEG-PDLLA mass ratio of 1/6 with filming temperature at 55 ℃ and filming time for 30 min. The resulting NT/mPEG-PDLLA-NPs displayed an opalescent and translucent appearance, with a high loading capacity of 14% and netupitant concentration of 10 mg/mL. NT/mPEG-PDLLA-NPs showed a spherical morphology, with a mean diameter of 58 nm and a nearly neutral Zeta potential of -0.29 mV. The NT/mPEG-PDLLA-NPs showed a cytotoxicity similar to free NT. Conclusion Netupitant was successfully loaded into mPEG-PDLLA-NPs to significantly increased the water solubility, thus providing the experimental foundation for the further development of injection of netupitant. |
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