Phthalocyanine−Polyamine Conjugates as Highly Efficient Photosensitizers for Photodynamic Therapy
作者:Xiong-Jie Jiang、Sin-Lui Yeung、Pui-Chi Lo、Wing-Ping Fong、Dennis K. P. Ng
DOI:10.1021/jm101253v
日期:2011.1.13
shown that they induce apoptosis extensively. As shown by confocal microscopy, these two compounds also show high affinity toward the lysosomes, but not the mitochondria, of the cells. Their in vivo photodynamic activity has also been investigated using HT29 tumor bearing nude mice. Both of them can effectively inhibit the growth of the tumor without causing apparent injury to the liver of the mice.
已经制备了一系列被不同的多胺部分轴向取代的硅(IV)酞菁。其荧光量子产率(Φ ˚F = 0.03-0.08)在Ñ,Ñ二甲基甲酰胺是因为由氨基部分还原淬火低。这些值显著在水性介质中(Φ增加˚F = 0.12-0.21)作为氨基取代基的质子化的结果。所有化合物均对人结肠腺癌HT29细胞和中国仓鼠卵巢细胞具有高度的光细胞毒性,IC 50值低至1.1 nM。两种选定化合物(2和5的流式细胞术研究))对HT29细胞的抑制作用已表明它们能广泛诱导细胞凋亡。如共聚焦显微镜所显示的,这两种化合物还对细胞的溶酶体而不是线粒体具有高亲和力。还已经使用携带HT29肿瘤的裸鼠研究了它们的体内光动力活性。它们都可以有效地抑制肿瘤的生长,而不会引起小鼠肝脏的明显损伤。