Dual-Functional Gadolinium-Based Copper(II) Probe for Selective Magnetic Resonance Imaging and Fluorescence Sensing
作者:Xiaolin Zhang、Xu Jing、Tao Liu、Gang Han、Huaqiang Li、Chunying Duan
DOI:10.1021/ic202322f
日期:2012.2.20
of other metal cations from Cu2+ detection, the probe featured selective relaxivity changes toward Cu2+ over other metal ions and brought unique Cu2+-specific luminescent responses. The probe was water-soluble with the luminescent detection limit established at 6 ppb and was successfully used for luminescence imaging detection of copper(II) in living cells. The results demonstrated the efficiency and
独特的g络合物Nap-DO3A-Gd,包含萘胺发光部分,二-2-吡啶甲基胺(DPA)结合螯合剂和1,4,7,10-四氮杂环十二烷-1,4,7-三乙酸( DO3A)部分已被设计和合成为双功能探针,用于活细胞中铜(II)的选择性磁共振成像和荧光传感。Nap-DO3A-Gd呈现出弛豫度变化的开启方式,并且向Cu 2+发出荧光猝灭。通过将萘二甲酰胺引入到Gd 3+造影剂平台中来限制DPA螯合剂的配位能力,并与Gd 3+配位到DPA部分上,以消除其他金属阳离子对Cu的干扰通过2+检测,该探针具有相对于其他金属离子向Cu 2+选择性选择性变化的特性,并带来了独特的Cu 2+特异性发光响应。该探针是水溶性的,发光检测极限为6 ppb,已成功用于活细胞中铜(II)的发光成像检测。结果证明了我们的方法在开发双模态图像中的效率和优势。