Membrane and nucleus targeting for highly sensitive cancer cell detection using pyrophosphate and alkaline phosphatase activity-mediated fluorescence switching of functionalized carbon dots.
本研究设计了一种基于功能化碳点(CD)与铜离子(Cu2+)的膜/核靶向荧光 OFF-ON-OFF 传感系统,用于癌细胞检测。该 CD 表面接枝十二烷基(C12)和磺基甜菜碱(SP)两性离子基团,可经疏水作用插入细胞膜,并在酸性癌细胞胞内质子化增强亲水性,从而由胞质向细胞核转位;在正常 MDCK 细胞中则无明显核转位。Cu2+ 与 C...