影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (5): 321-326.DOI: 10.7517/j.issn.1674-0475.2007.05.321

• 研究快讯 •    下一篇

细胞内铜离子的双光子荧光成像

高艳虹1, 余梦晓2, 李富友2, 李定国1, 易涛2, 陆汉明1, 黄春辉2   

  1. 1. 上海交通大学, 医学院附属新华医院消化内科和老年科, 上海, 200092;
    2. 复旦大学, 化学系与先进材料实验室, 上海, 200433
  • 收稿日期:2007-05-17 修回日期:2007-06-12 出版日期:2007-09-23 发布日期:2007-09-23
  • 通讯作者: 李富友,021-55664185,fyli@fudan.edu.cn
  • 基金资助:
    国家自然科学基金(20490210);上海市科学技术委员会资助项目(05DJ14004 ,06QH14002)

Two-Photon Excited Fluorescent Imaging for Cu2+ in Living Cells

GAO Yan-hong1, YU Meng-xiao2, LI Fu-you2, LI Ding-guo1, YI Tao2, LU Han-ming1, HUANG Chun-hui2   

  1. 1. Department of Digestive Disease & Geriatrics, Xinhua Hospital, Medicine School of Shanghai Jiaotong University, Shanghai 200092, P. R. China;
    2. Department of Chemistry, and Laboratory of Advanced Materials, Fudan University, Shanghai 200433, P. R. China
  • Received:2007-05-17 Revised:2007-06-12 Online:2007-09-23 Published:2007-09-23

摘要: 基于无荧光的螺环结构与具有荧光的开环酰胺的平衡反应,本文合成了一个能在水基的缓冲溶液中选择性地识别Cu2+的罗丹明衍生物FD2.当在HEPES缓冲溶液中加入10当量的Cu2+时,FD2的单光子激发荧光和双光子激发荧光的强度均表现出明显的增强;更为重要的是,运用双光子荧光显微技术可以选择性地对活细胞内Cu2+进行成像.

关键词: 荧光成像, 细胞内铜离子, 双光子激发荧光

Abstract: Based on the spirolactam (nonfluorescent) to ring-open amide (fluorescent) equilibrium, a dye FD2 was demonstrated as a highly selective sensor for Cu2+ over other metal ions. This probe is the first Cu2+ chemosensor with turn-on (85-fold) two-photon excited fluorescence.Moreover, two-photon fluorescent microscopy experiments further establish that FD2 can be used for sensing Cu2+ within living cells.

Key words: fluorescent bioimaging, Cu2+, two-photon excited fluorescence

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