In vitro and in vivo imaging application of a 1,8-naphthalimide-derived Zn2+ fluorescent sensor with nuclear envelope penetrability†
Abstract
A newly developed fluorescent sensor, Naph-BPEA, shows a specific turn-on response to Zn2+ and can be excited by visible light. The in situ nuclear Zn2+ imaging in HeLa and HepG2 cells reveals the nuclear envelope penetrability of the sensor. The specific sensor location in a zebrafish larva was also demonstrated.