摘要:以ZnSO4。7H2O、NaOH和3-氨丙基三乙氧基硅烷(APTES)为原料,优化反应条件,制备出表面具有氨基端的纳米氧化锌颗粒。基于透明质酸受体在正常细胞与肿瘤细胞表面表达的差异性,透明质酸与氨基化的纳米氧化锌颗粒(NH2-ZnO)进一步酰胺化,在NH2-ZnO表面接枝透明质酸,得到透明质酸修饰的纳米氧化锌颗粒(HA-ZnO/APTES) ,用XRD、FTIR、SEM等仪器表征表明:以硅烷偶联剂对纳米氧化锌颗粒表面进行胺化修饰以及透明质酸修饰后,我们成功制备出粒径约为170nm的HA-ZnO/APTES的纳米颗粒,作为罗丹明6G的药物载体,室温载药24h,平衡吸附量稳定在0。264左右,所以透明质酸修饰纳米氧化锌颗粒具有一定的药物负载能力。74682
毕业论文关键词:透明质酸;纳米氧化锌;纳米载体
Preparation and Study of Hyaluronic Acid Modified Nano - Zinc Oxide Supports
Abstract:The nano - zinc oxide particles with amino - terminal were prepared by optimizing the reaction conditions with ZnSO4。7H2O, NaOH and 3 - aminopropyltriethoxysilane (APTES) as raw materials。 Based on the difference in the expression of hyaluronic acid receptor on normal cells and tumor cells, hyaluronic acid was further amidated with aminated nanometer zinc oxide particles (NH2-ZnO), and hyaluronic acid was grafted on the surface of NH2-ZnO to obtain (HA-ZnO / APTES) was characterized by XRD, FTIR and SEM。 The results showed that the surface of nano-zinc oxide particles was modified by silane coupling agent and modified by hyaluronic acid。 We successfully prepared nanoparticles with HA-ZnO / APTES with a diameter of about 170nm。 As the drug carrier of Rhodamine 6G, the equilibrium adsorption capacity was stable at about 0。264 at room temperature, so the hyaluronic acid modified nano-zinc oxide particles had A certain drug load capacity。
Keywords:hyaluronic acid; nano-zinc oxide; nano-carrier
1。绪论 1
1。1纳米氧化锌(ZNO) 1
1。2纳米氧化锌的生物医用价值 1
1。2。1纳米氧化锌的抑菌机理 1
1。2。2纳米氧化锌抑菌性能的影响因素 4
1。3 透明质酸(HA) 6
1。3。1 透明质酸的医学应用 7
1。3。2 透明质酸在靶向载药中的应用 7
1。4 药物载体的研究 7
1。4。1 高分子材料纳米药物载体 8
1。4。2 磁性纳米药物载体 11
1。4。3 纳米脂质体药物载体 11
1。4。4 介孔药物载体 12
1。5 本课题研究目的及意义 13
2。实验部分 15
2。1实验原料 15
2。3实验方法 17
2。3。1透明质酸接枝修饰氧化锌的制备 17
2。3。1。1 ZnO/APTES的制备 17
2。3。1。2 ZnO/APTES表面接枝透明质酸 17
2。3。2罗丹明6G的负载 18
2。3。2。1制作罗丹明6G标准曲线 18
2。3。2。2负载罗丹明6G 18
2。3。3 XRD测定