详细信息
基于纤维素模板的聚合物空心微球作为药物载体的性能研究及分析 被引量:1
Properties of Cellulose-based Polymeric Hollow Microspheres as Drug Carriers
文献类型:期刊文献
中文题名:基于纤维素模板的聚合物空心微球作为药物载体的性能研究及分析
英文题名:Properties of Cellulose-based Polymeric Hollow Microspheres as Drug Carriers
作者:南静娅[1,2,3,4] 刘玉鹏[1,2,3,4] 陈莹[1,2,3,4,5] 王春鹏[1,2,3,4,5] 储富祥[6]
第一作者:南静娅
机构:[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术研究所;[6]中国林业科学研究院
年份:2015
卷号:49
期号:3
起止页码:1-6
中文期刊名:生物质化学工程
外文期刊名:Biomass Chemical Engineering
收录:北大核心:【北大核心2014】;
基金:中国林科院林业新技术所基本科研业务费专项资金(CAFINT2010K04);江苏省自然科学基金项目(BK20131071)
语种:中文
中文关键词:聚合物空心微球;聚N-异丙基丙烯酰胺;聚丙烯酸;药物载体
外文关键词:polymeric hollow microspheres ; poly (N-isopropylacrylamide) ; poly ( acrylic acid) ; drug cartier
分类号:TQ35
摘要:以羟丙基纤维素为模板材料,分别采用不同的聚合方法制备了2种不同形态和结构的聚合物空心微球——聚N-异丙基丙烯酰胺-co-聚丙烯酸(PNIPAm-co-PAA)微凝胶和聚N-异丙基丙烯酰胺-聚丙烯酸(PNIPAm-PAA)水凝胶微囊。以盐酸阿霉素(Dox)作为模型药物,考察了聚合物空心微球作为药物载体的载药能力和体外释放性能。研究表明,PNIPAm-co-PAA微凝胶、PNIPAm-PAA水凝胶微囊和Dox分子能够通过正负电荷的相互吸引实现有效结合;载药微球具有良好的缓释性能,并对Dox的释放表现出明显的p H值敏感性和温度敏感性。体外细胞毒性实验表明,载药PNIPAmco-PAA微凝胶、PNIPAm-PAA水凝胶微囊具有很高的抗肿瘤活性,细胞相对存活率均可达20%左右。PNIPAm-co-PAA微凝胶、PNIPAm-PAA水凝胶微囊在作为水溶性药物或蛋白类药物载体方面,具有潜在的应用价值,同时有望应用于木材胶黏剂防腐等。
Hydroxypropylcellulose (HPC), a natural polymer, was chosen as a biocompatible and biodegradable template to prepare two kinds of polymeric hollow microspheres, i. e., poly ( N-isopropylacrylamide ) -co-poly ( acrylic acid ) ( PNIPAm-co- PAA) microgels and poly (N-isopropylacrylamide)-poly (acrylic acid) (PNIPAm-PAA) hydrogel capsules by using different polymerization methods. The drug loading capacity and releasing behaviors of PNIPAm-co-PAA microgels and PNIPAm-PAA hydrogel capsules as drug carriers were investigated by using anticancer drug, Doxorubicin hydrochloride (Dox) , as hydrophilic model drug. The results indicated that Dox could be encapsulated in PNIPAm-co-PAA microgels and PNIPAm-PAA hydrogel capsules with high drug loading driven by the electrostatic interaction. The characteristic sustained-releases of Dox from these two kinds of microspheres were observed under physiological pH and temperature. More encouragingly, the release of Dox exhibited a dual-responsivity to temperature and pH. In vitro cytotoxicity assay indicated that Dox-loaded PNIPAm-co-PAA microgels and PNIPAm-PAA hydrogel capsules had high antitumor activity, and implied that they might be a potential drug delivery carrier especially for water-soluble or polypeptide drugs, as well as applying in the wood adhesive preservation, etc.
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