Design Guidelines For Conjugated Polymers With Light-Activated Anticancer Activity
作者:Chengfen Xing、Libing Liu、Hongwei Tang、Xuli Feng、Qiong Yang、Shu Wang、Guillermo C. Bazan
DOI:10.1002/adfm.201100840
日期:2011.11.8
it is shown that water soluble conjugated polymers with a molecular design centered on the polythiophene−porphyrin dyad are effective for killing neighboring cells. Following photoexcitation, energy is efficiently transferred from the polythiophene backbone to the porphyrin units, which readily produce singlet oxygen (1O2) that is toxic for the cells. Due to the light‐harvesting ability of the electronically
同时提供治疗作用和对结果进行成像的多功能材料为治疗各种疾病提供了新的策略。此处显示,具有以聚噻吩-卟啉二聚体为中心的分子设计的水溶性共轭聚合物可有效杀死邻近细胞。光激发后,能量从聚噻吩主链有效转移到卟啉单元,卟啉单元容易产生对细胞有毒的单线态氧(1 O 2)。由于电子离域主链的光收集能力以及光学伙伴之间的有效能量转移,聚噻吩-卟啉二聚体显示出更高的1 O 2。产生效率要比小分子类似物高。这些聚合物的荧光性质还可用于区分活细胞和死细胞。可以将叶酸接枝到聚合物侧链上来设计聚合物,该叶酸可以特异性杀死叶酸受体过表达的细胞,从而通过分子设计提供了重要的抗癌特异性证明。