Provided are a method for dual-color imaging of sodium/calcium activities using a two-photon fluorescent probe and a method for preparing the two-photon fluorescent probe. The disclosed two-photon fluorescent probe for detecting calcium ions near the cell membrane reacts with calcium cations to exhibit strong two-photon fluorescence and may be selectively and easily loaded into the cell membrane by forming a complex with a calcium ion. Further, it allows imaging of the distribution of calcium cations in a living cell or tissue since it can selectively detect calcium ions in the living cell or tissue at a depth of 100 to 200 μm for more than 60 minutes. In addition, by staining the living cell or tissue with two probes of different fluorescent colors, the calcium and sodium activities can be imaged simultaneously at different channels.
提供了一种使用双光子荧光探针进行
钠/
钙活性双色成像的方法,以及制备双光子荧光探针的方法。公开的用于检测细胞膜附近
钙离子的双光子荧光探针与
钙阳离子反应,显示强烈的双光子荧光,并且可以通过与
钙离子形成复合物而被选择性且轻松地装载到细胞膜中。此外,它允许成像活细胞或组织中
钙阳离子的分布,因为它可以选择性地检测活细胞或组织中深度达100至200微米的
钙离子超过60分钟。此外,通过用两种不同荧光颜色的两个探针染色活细胞或组织,可以同时在不同通道上成像
钙和
钠的活性。