Two‐Photon Probes for Zn
<sup>2+</sup>
Ions with Various Dissociation Constants. Detection of Zn
<sup>2+</sup>
Ions in Live Cells and Tissues by Two‐Photon Microscopy
作者:Isravel Antony Danish、Chang Su Lim、Yu Shun Tian、Ji Hee Han、Min Young Kang、Bong Rae Cho
DOI:10.1002/asia.201000720
日期:2011.5.2
Zn2+‐selective two‐photon fluorescent probes (AZnM1−AZnN) that had a wide range of dissociation constants (KdTP=8 nm‐12 μM) were synthesized. These probes showed appreciable water solubility (>3 μM), cell permeability, high photostability, pH insensitivity at pH>7, significant two‐photon action cross‐sections (86–110 GM) upon complexation with Zn2+, and can detect the Zn2+ ions in HeLa cells and in living
一系列的Zn 2+ -选择性双光子荧光探针(AZnM1-AZnN),其有一个宽范围的解离常数的(ķ d TP = 8 N间- 12μ中号)的合成。这些探针却有明显的水溶性(> 3μ中号在与锌络合),细胞渗透性,高光稳定性,pH值不敏感,在pH> 7,显著双光子动作的横截面(86-110 GM)2+,并且可以检测大鼠海马HeLa细胞和活组织切片中Zn 2+离子的深度> 80μm,并且不会产生误靶和光漂白的问题。这些探针可潜在地用于检测各种量的Zn 2+ 活细胞和完整组织中的离子。