The present invention discloses a solid lipid nanoparticle (SLN) comprising: a) a solid lipid core comprising at least a glyceride and/or at least a fatty acid; b) a mixture of amphiphilic components forming a shell around said core a); c) an alkaline-earth complex with a compound of formula I and/or II: d) at least a fluorescent dye selected from: a cyanine fluorescent dye and/or a polyetherocyclic compound selected from: coumarin, pyrano, quinoline, pyranoquinoline, indole and pyranoindole derivates in acid form or a pharmaceutically acceptable salt thereof. These nanoparticles allow a prolonged blood circulation half-life, show enhanced photostability and improved fluorescence signal. The dye is preserved from degradation and improves the fluorescent quantum yield.
本发明揭示了一种固体脂质纳米粒子(SLN),包括:a)固体脂质核心,包括至少一种
甘油酯和/或至少一种
脂肪酸;b)由两性分子组成的混合物,形成包围核心a)的壳层;c)一种碱土
金属配合物,其中该配合物为公式I和/或II的化合物;d)至少一种荧光
染料,选自:青光鱼荧光
染料和/或聚醚环化合物,选自:
香豆素,
吡喃,
喹啉,
吡喃
喹啉,
吲哚和
吡喃
吲哚衍
生物的酸形式或其药学可接受的盐。这些纳米粒子可以延长血液循环半衰期,具有增强的光稳定性和改善的荧光信号。
染料不会被降解,并提高荧光量子产率。