为华生物DSPE-PEG-FA二硬脂酰基磷脂酰乙醇胺-聚乙二醇-叶酸
1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[folate(polyethylene glycol)]
材料应用案例:靶向载药复合脂质纳米粒(PL/ACC-D0X)的制备
将PL与ACC-DOX (ACC-DOX: PL=1, w/w)分散于无水乙醇和三氯甲烷的
混合溶剂中(无水乙醇:三氯甲 烷=1,v/v),37 ℃搅拌过夜后300 rpm离心5 min除去大颗粒。所得上清液置于圆底烧瓶中使用旋转蒸发仪37 ℃下去除溶剂成薄膜。加入含DSPE-PEG2000(DSPE-PEG2000:PL=0.2,w/w)和DSPE-PEG-FA (DSPE-PEG2000: DSPE-PEG-FA=1, w/w)的无水乙醇溶液复溶薄膜,所得溶液使用探头超声仪(400W,工作2s,停3s,超声20次)分散。在400 rpm磁力搅拌的条件下,将无水乙醇溶液(常温)注入9倍体积的水中,继续搅拌5 min。将新制备好的乳状液放置室温即形成PL/ACC-DOX.室温下3500Da透析袋内透析过夜以除去游离药物,收集透析袋内样品4 ℃放置备用。
文献:
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