高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (3): 465.doi:

• 研究快报 • 上一篇    下一篇

一种用于细胞核成像的新型双光子荧光探针

刘鑫1, 刘恒1, 贾鹏飞1, 张波1, 王军杰2, 赵宁2, 张元红2, 于晓强2   

    1. 兰州大学生命科学学院, 兰州 730000;
    2. 山东大学晶体材料国家重点实验室, 济南 250100
  • 收稿日期:2008-12-02 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10
  • 通讯作者: 刘恒, 于晓强

New Two-photon Fluorescence Probe for Nuclear DNA Imaging

LIU Xin1, LIU Heng1*, JIA Peng-Fei1, ZHANG Bo1, WANG Jun-Jie2, ZHAO Ning2, ZHANG Yuan-Hong2, YU Xiao-Qiang2*   

    1. School of Life Science, Lanzhou University, Lanzhou 730000, China;
    2. State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
  • Received:2008-12-02 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10
  • Contact: LIU Heng, YU Xiao-Qiang

摘要:

本文报道了具有大双光子活性吸收截面的DNA探针BMVEC, 同时首次利用双光子显微镜完成了与DAPI的复染实验, 实验结果证实了BMVEC对细胞核的选择性标记能力.

关键词: 双光子荧光探针; 双光子荧光成像; 核酸

Abstract:

A new two-photon fluorescence DNA probe, BMVEC, with bigger σ×Φ(1437 GM) was synthesized. The absorption titration shows that there is an interaction between BMVEC and DNA because the probe can intercalate the grooves in the double helix of DNA, which enhances its two-photon fluorescent intensity. Meanwhile the double-staining results in cancer cells by means of TPM demonstrate the exclusive nucleic labeling ability of BMVEC, and the positions and amounts of nuclei labeled by BMVEC are wholly the identical as those by DAPI. Moreover, the incident power of BMVEC is lower than that of DAPI. The results indicate that BMVEC can act as the two-photon fluorescent probe of DNA.

Key words: Two-photon fluorescent probe; Two-photon fluorescence imaging; Nucleic acid

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