李晓鸣 1,2 徐健雄 1,2 赵笑天 1,2 张向荣 3 林 清.一种白细胞介素 -12 缓释微球制备及体外表征[J].现代生物医学进展英文版,2015,15(6):1015-1018. |
一种白细胞介素 -12 缓释微球制备及体外表征 |
Study on Preparation and Vitro Characterization of Interleukin-12Sustained-Release Microsphere * |
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DOI: |
中文关键词: 白介素 -12 缓释微球 聚乳酸 - 聚羟基乙酸 |
英文关键词: Interleukin-12 Microspheres Polylactic-Co-Glycolic Acid |
基金项目:国家自然科学基金项目( 81 001 416);医工交叉项目( YG201 0ms11) |
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中文摘要: |
目的: 开发一种白细胞介素 -12( IL-12)长效缓释微球剂型。 方法: 采用 水包油 - 油包固 (S/O/W)法制备了 白介素 -12 因子多糖
微粒的聚乳酸 - 聚羟基乙酸共聚物( PLGA-PLA)微球,研究了 微球的表面形态和粒径大小, 并且运用 ELISA 方法考察了 微球的体
外释放效果和免疫活性。 结果: 本方法制备的白介素 -12 因 子微球光滑圆整,体外缓释达 45 天,累积释放率近 90%。 结论: 本方法
制 备的白介素 -12 因子微球, 不仅具有有效地保护 IL-12 蛋白 活性, 同 时实现长效缓释的目 标, 是一种可行的 IL-12 缓释方案。 |
英文摘要: |
Objective:To exploit an interleukin-12 (IL1 -2) long-term sustained release microsphere formulations.Methods:Dextran glassy particles were prepared by a unique method of low temperature aqueous-aqueous "emulsion", and then the IL-12-loaded
dextran glassy particles were encapsulated into PLGA microspheres by the method of solid-in-oil-in- water (S/O/W)
emulsion-evaporation technique. The microspheres were characterized by SEM. In vitro release profiles of IL-1 2 loaded microspheres
were plotted by Human IL1 2 Quantikine ELISA Kit.Results:The IL-1 2-loaded microspheres possessed spherical shape and smooth
surface. The cumulative release in vitro was about 90% after 45 days.Conclusion:This method effectively protected the bioactivity of
IL-1 2 and microspheres exhibited an ideal sustained release behavior. |
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