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.
本发明公开了一种固体脂质纳米粒子(SLN),包括:a)至少包括一种
甘油酯和/或至少一种
脂肪酸的固体脂质核心;b)形成围绕所述核心a)的壳层的两性分子成分混合物;c)与式I和/或II的化合物形成的碱土
金属络合物;d)至少选择自:青菁荧光
染料和/或选择自:
香豆素、
吡喍、
喹啉、
吡喍
喹啉、
吲哚和
吡喍
吲哚衍
生物的多醚环化合物的荧光
染料;以及其在酸形式或其药学上可接受的盐中。这些纳米粒子允许延长血液循环半衰期,显示增强的光稳定性和改善的荧光信号。
染料免受降解并提高荧光量子产率。