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  • Title: Real-time monitoring of DNA G-quadruplexes in living cells with a small-molecule fluorescent probe.
    Author: Zhang S, Sun H, Wang L, Liu Y, Chen H, Li Q, Guan A, Liu M, Tang Y.
    Journal: Nucleic Acids Res; 2018 Sep 06; 46(15):7522-7532. PubMed ID: 30085206.
    Abstract:
    G-quadruplex DNA has been viewed as a prospective anti-cancer target owing to its potential biological relevance. Real-time monitoring of DNA G-quadruplex structures in living cells can provide valuable insights into the relationship between G-quadruplex formation and its cellular consequences. However, the probes capable of detecting DNA G-quadruplexes in living cells are still very limited. Herein, we reported a new fluorescent probe, IMT, for real-time visualization of DNA G-quadruplex structures in living cells. Using IMT as a fluorescent indicator, the quantity changes of DNA G-quadruplex at different points in time during continuous cellular progression responding to Aphidicolin and Hydroxyurea treatment have been directly visualized. Our data demonstrate that IMT will be a valuable tool for exploring DNA G-quadruplexes in live cells. Further application of IMT in fluorescence imaging may reveal more information on the roles of DNA G-quadruplexes in biological systems.
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