目的制备用于肿瘤靶向治疗的Fe3O4及其白蛋白包被的磁性纳米粒子.方法采用部分还原法制备Fe3O4纳米粒子,通过微乳化方法制备了白蛋白包被的Fe3O4磁性纳米颗粒.结果Fe3O4粒径为10nm左右,X-射线粉末衍射分析显示Fe3O4纳米磁性微粒是典型的尖晶石构型;白蛋白包被的磁性纳米粒子直径在200nm左右.结论Fe3O4及其白蛋白包被的磁性纳米粒子适于用于肿瘤靶向治疗的进一步研究.%Objective:To prepare Fe3O4 magnetite nanoparticles and HSA- coated magnetite particles for the purpose of regional target therapy. Methods: To adopt partial reduction method to prepare the Fe3O4 nanoparticles:100 ml 0.01 mol/L Na2SO3 was added dropwise into 100 ml 0.06 mol/LFeCl3 solution under nitrogen gas flow.10%(V%) ammonia was added dropwise with rapid stirring until pH of the reaction solution reach 8. Heated at 70℃ with water bath for 15 min. Preparation of HAS- coated magnetite particles:To use microemulsion approach,with oleic acid as oil phase, mixture of HSA and magnetite solution as water phase and sp- 85 as emulsion agent.Results: Fe3O4 magnetite particles with about 10 nm in diameter and X - ray power diffraction show that the nanoparticles is γ- Fe2O3. HAS- coated Fe3O4 magnetite nanoparticles is characterized by TEM with diameter no more than 200 nm. Conclusions: Fe3O4 magnetite nanoparticles and HSA - coated magnetite particles is suitable for researching of regional target therapy.
展开▼
