The invention belongs to the field of pharmacy, in particular to an active targeting delivery system of acetylcholine receptor mediated blood blood brain barrier. The invention uses KC2S peptide with high affinity with acetylcholine receptor the biotinylated derivatives with streptavidin fluorescein conjugated, cell specific uptake and distribution in brain. The results show that KC2S can mediate protein molecules across the blood-brain barrier; KC2S modified albumin nanoparticles, the 125I marker object distribution indicates that KC2S, can promote the drug carrier system across the blood-brain barrier nano; KC2S modification to poly ethylene-b-poly lactic acid and construct micelles, fluorescence tracer results show that KC2S mediated drug delivery system targeting to the brain; KC2S - polyethylene glycol polylactic acid micellar paclitaxel loaded, can significantly extend the orthotopic glioma model in nude mice the survival period of tumor.
【技术实现步骤摘要】
【技术保护点】
1.一种乙酰胆碱受体介导跨越血脑屏障的主动靶向递药系统,其特征在于,通过下述方法制备:利用多肽KC2S将其生物素化衍生物与链霉亲和素化荧光素偶联,或将多肽KC2S修饰到白蛋白纳米粒上,或将多肽KC2S修饰到聚乙二醇-聚乳酸上并构建成胶束制得跨越血脑屏障的主动靶向递药系统;所述多肽KC2S其氨基酸序列为YTKTWCDGFCSSRGKRIDLG。
【技术特征摘要】
【专利技术属性】
技术研发人员:陆伟跃,占昌友,谢操,孟庆刚,顾炳,
申请(专利权)人:复旦大学,
类型:发明
国别省市:31[]
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