measurements. Moreover, the uptake of porphyrin-containing dendritic micelles by cells and release of reduction-sensitive PSs were investigated using flow cytometry and confocal laser scanning microscopy. The results showed that the cellular uptake of dendritic micelles was more than that of free porphyrin and the uptake process was time-dependent. Additionally, the phototoxicity of these dendritic PS micelles
提出了通过二
硫键将
卟啉O
EG化以形成一类新的树突状
卟啉光敏剂(
PSs)。这些两亲
PS具有精确的分子结构,可以在
水溶液中自组装成球形聚集体。使用紫外-可见光谱研究了它们的热响应性,并使用动态光散射和
TEM测量检查了它们的还原响应特性。此外,使用流式细胞仪和共聚焦激光扫描显微镜研究了细胞对含
卟啉的树突胶束的摄取和对还原敏感性
PSs的释放。结果表明,树突状胶束的细胞摄取大于游离
卟啉,并且摄取过程是时间依赖性的。此外,用M
TT法研究了这些树突状
PS胶束的光毒性。发现树突胶束对癌细胞表现出有效的光毒性,而游离
卟啉在光照射下几乎没有毒性。所有结果表明这些树突状
PS有望用于光动力疗法。