Fluorescent metal ion indicators based on benzoannelated crown systems: a green fluorescent indicator for intracellular sodium ions
作者:Vladimir V. Martin、Anca Rothe、Kyle R. Gee
DOI:10.1016/j.bmcl.2005.02.017
日期:2005.4
The synthesis and metal binding properties of cation-sensitive fluorescent indicators intended for biological applications are described. The increase of the crown ether ring size enhances the affinity for larger cations, but weakens the fluorescent response and selectivity. A compound having a 15-crown-5 chelator directly attached to a 2,7-difluoroxanthenone fluorophore loads into live cells and responds
描述了打算用于生物应用的阳离子敏感性荧光指示剂的合成和金属结合性能。冠醚环尺寸的增加增强了对较大阳离子的亲和力,但减弱了荧光响应和选择性。具有15冠5螯合剂直接连接到2,7-二氟x吨酮荧光团的化合物会加载到活细胞中,并对钠离子浓度变化做出响应,并在可见光波长范围内出现较大的荧光增加。