Page 112 - 《精细化工》2022年第8期
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第 39 卷第 8 期 精 细 化 工 Vol.39, No.8
2022 年 8 月 FINE CHEMICALS Aug. 2022
功能材料
石杉碱甲分子印迹聚合物的制备及其缓释特性
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贾 朝 1,2 ,温惠云 ,黄赛朋 ,郭鹏琦 ,曹 波 ,
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陈 欣 ,王雅茹 ,薛伟明
(1. 西北大学 化工学院,陕西 西安 710069;2. 商洛学院,陕西 商洛 726000)
摘要:用分子印迹和沉淀聚合技术,以石杉碱甲(Hup A)为模板、α-甲基丙烯酸为功能单体、乙二醇二甲基丙
烯酸乙酯为交联剂成功制备了分子印迹聚合物(MIP)。采用 FTIR、SEM、TGA 对 MIP 进行了表征。通过静态
吸附、动态吸附、体外释药和 3-(4,5-二甲基-2-噻唑基)-2,5-二苯基四氮唑溴盐(MTT)法对 MIP 性能进行了评
价。结果表明,MIP 对 Hup A 存在特异性和非特异性两种结合位点。市售 Hup A 片在 1 h 内快速释放,累积释
放率达 90%以上,有明显的突释现象。而 MIP 在 1 h 后释放平缓,在 24 h 附近达到平衡,可以达到缓慢释放的
效果。释放动力学符合 Peppas 模型,释放指数为 0.48,为非 Fickian 扩散机理。MIP 生物相容性良好,L929 小
鼠成纤维细胞对 MIP 的细胞毒性数据显示,细胞存活率>93%。
关键词:石杉碱甲;分子印迹;沉淀聚合法;药物缓释;功能材料
中图分类号:O631.3 文献标识码:A 文章编号:1003-5214 (2022) 08-1612-07
Preparation and sustained release characteristics of
huperzine A molecularly imprinted polymer
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JIA Zhao , WEN Huiyun , HUANG Saipeng , GUO Pengqi , CAO Bo ,
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CHEN Xin , WANG Yaru , XUE Weiming
(1. School of Chemical Engineering, Northwest University, Xi′an 710069, Shaanxi, China; 2. Shangluo University,
Shangluo 726000, Shaanxi, China)
Abstract: Molecularly imprinted polymer (MIP) was prepared by molecular imprinting and precipitation
polymerization using huperzine A (Hup A) as template, α-methacrylic acid (MAA) as functional monomer,
and ethylene glycol dimethyl acrylate as crosslinking agent. The synthesized MIP were then characterized
by FTIR, SEM and TGA, followed by property evaluation by static adsorption, dynamic adsorption, in vitro
drug release and 3-(4,5-dimethyl-2-thiazolyl)-2,5-di-phenyltetrazolium bromide (MTT) assay. The results
showed that Hup A was polymerized in MIP through specific and nonspecific binding. The commercially
available Hup A tablets was rapidly released within 1 h showing cumulative release rate of more than 90%
with obvious sudden release phenomenon, while MIP showed sustained release of Hup A after the first hour
and reached equilibrium about 24 h, demonstrating slow release effect. The release kinetics conformed to
the Peppas model with a release index of 0.48, implying a non Fickian diffusion mechanism. Moreover, in
vitro cytotoxicity assay indicated that the survival rate of L929 mouse fibroblasts was higher than 93%
when treated with MIP, which suggested good biocompatibility.
Key words: huperzine A; molecular imprinting; precipitation polymerization; drug delivery; functional
materials
阿尔茨海默病(AD)是老年痴呆最常见的病因。 口老龄化呈增加的趋势,这种不可逆转的神经退行
目前,世界上约有 AD 患者 4500 万,且其数目随人 性痴呆症已经成为全世界医学、社会关注的主要健
收稿日期:2021-11-11; 定用日期:2022-04-01; DOI: 10.13550/j.jxhg.20211146
基金项目:陕西省自然科学基金(2018JM2037,2020JQ-609);陕西省教育厅项目(20JK0610);陕西省重点研发计划(2020GY-313);
中国博士后科学基金(2020M683701XB)
作者简介:贾 朝(1985—),男,博士生,E-mail:chunjia_111@163.com。联系人:薛伟明(1966—),女,教授,E-mail:xue_wm@126.com。