DUAL-COLOR IMAGING METHOD OF SODIUM/CALCIUM ACTIVITIES USING TWO-PHOTON FLUORESCENT PROBES AND PREPARATION METHOD OF TWO-PHOTON FLUORESCENT PROBES
申请人:Kim Hwan Myung
公开号:US20120035360A1
公开(公告)日:2012-02-09
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.
Dual-Color Imaging of Sodium/Calcium Ion Activities with Two-Photon Fluorescent Probes
作者:Hyung Joong Kim、Ji Hee Han、Mi Kyung Kim、Chang Su Lim、Hwan Myung Kim、Bong Rae Cho
DOI:10.1002/anie.201002907
日期:2010.9.10
A two‐photonprobe (BCaM) shows 14‐fold enhancement in two‐photon emission fluorescence in response to Ca2+ and shows high sensitivity and selectivity for near‐membrane Ca2+ ions (see picture). Combined with the known Na+ two‐photonprobe ANa1, BCaM allows simultaneous dual‐color imaging of Ca2+/Na+ activities within live cells and in tissues at more than 100 μm depth for long time periods without
一个双光子探针(BCaM)在响应Ca 2+的情况下显示了双光子发射荧光增强了14倍,并且对近膜Ca 2+离子具有很高的灵敏度和选择性(参见图片)。与已知的Na +双光子探针ANa1结合使用,BCaM可以长时间对活细胞和组织内深度超过100μm的组织中的Ca 2+ / Na +活性进行双色成像,而无需进行光漂白。