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光交联羧甲基壳聚糖水凝胶的制备及药物缓释性能研究
Preparation of photo-crosslinking carboxymethyl chitosan hydrogel for sustained drug release

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候冰娜 1   李进 1   倪凯 1   韩超越 1   沈惠玲 1   赵琳琳 2   李征征 1,3,4,5 *  
文摘 羧甲基壳聚糖是一种壳聚糖衍生物,具有良好的生物相容性和可降解性,在生物医药领域具有广泛的应用。本研究合成一种可光交联的水溶性羧甲基壳聚糖衍生物。通过对羧甲基壳聚糖进行双键修饰,合成甲基丙烯酸缩水甘油酯改性的羧甲基壳聚糖(M-CMCS),并通过核磁共振氢谱(1 H-NMR)和傅里叶变换红外光谱(FT-IR)对M-CMCS的结构进行表征。通过光引发M-CMCS交联制备具有不同交联度的M-CMCS水凝胶。通过扫描电子显微镜(SEM)、流变仪和紫外-可见分光光度计(UV-Vis)分别对M-CMCS水凝胶的微观形态、黏弹性能、溶胀性能、酶促降解性能和体外药物释放性能进行了研究。结果表明:随着甲基丙烯酸缩水甘油酯与羧甲基壳聚糖的氨基摩尔比的增加,产物的接枝度逐渐增加。M-CMCS水凝胶具有高度孔隙化且孔隙之间相互连通的结构特点,孔径在1~20μm范围内。随着交联度的增大,M-CMCS水凝胶的溶胀比减小。M-CMCS水凝胶在溶菌酶作用下缓慢降解,随着交联度的增大,降解速率减慢。MCMCS水凝胶对抗癌药物吉西他滨具有缓释作用,药物释放时间可达4天。光交联M-CMCS水凝胶在药物释放及组织工程领域具有重要的应用前景。
其他语种文摘 Carboxymethyl chitosan is an important chitosan derivative with good biocompatibility and degradability,and has a wide range of biomedical applications.In this study,water-soluble carboxymethyl chitosan derivative that can be photo-crosslinked by UV irradiation was synthesized.Methacrylated carboxymethyl chitosan (M-CMCS) was synthesized by N-methacrylation of carboxymethyl chitosan (CMCS).The chemical structures of M-CMCS were characterized by ~~1H NMR and FT-IR.The M-CMCS hydrogels with different degrees of crosslinking was prepared by UV-triggered photo-crosslinking.The microscopic morphology,mechanical properties,swelling properties,enzymatic degradation properties and in vitro drug release behaviors of M-CMCS hydrogels were investigated by SEM,rheometer,and UV-Vis spectroscopy,respectively.The results show that the degree of methacrylation is gradually increased as the molar ratio of glycidyl methacrylate to carboxymethyl chitosan increases.M-CMCS hydrogels have the structure of high porosity and interconnected pores with the pore size of 1-20μm.The swelling ratio of M-CMCS hydrogels is decreased as the degree of crosslinking increases.M-CMCS hydrogel can be slowly degraded by lysozyme,and the degradation rate is decreased by increasing the degree of crosslinking.M-CMCS hydrogels show sustained release behavior for anticancer drug gemcitabine,and the drug release can be extended to 4 days.Photo-crosslinked M-CMCS hydrogels show great promise for drug release and tissue engineering.
来源 材料工程 ,2020,48(11):76-84 【核心库】
DOI 10.11868/j.issn.1001-4381.2020.000025
关键词 羧甲基壳聚糖 ; 水凝胶 ; 光交联 ; 药物缓释
地址

1. 天津科技大学化工与材料学院, 天津, 300457  

2. 天津理工大学材料科学与工程学院, 天津, 300457  

3. 复旦大学, 聚合物分子工程国家重点实验室, 上海, 200433  

4. 天津科技大学, 天津市海洋资源与化学重点实验室, 天津, 300457  

5. 天津科技大学, 天津市制浆造纸重点实验室, 天津, 300457

语种 中文
文献类型 研究性论文
ISSN 1001-4381
学科 化学
基金 2018年度天津市教委科研计划项目 ;  天津市海洋资源与化学重点实验室 ;  天津市制浆造纸重点实验室开放基金资助项目 ;  国家自然科学基金
文献收藏号 CSCD:6863734

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