Journal
NATURE CHEMISTRY
Volume 5, Issue 3, Pages 182-186Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.1548
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Funding
- Cancer Research UK
- Cancer Research UK [12488, 11961] Funding Source: researchfish
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Four-stranded G-quadruplex nucleic acid structures are of great interest as their high thermodynamic stability under near-physiological conditions suggests that they could form in cells. Here we report the generation and application of an engineered, structure-specific antibody employed to quantitatively visualize DNA G-quadruplex structures in human cells. We show explicitly that G-quadruplex formation in DNA is modulated during cell-cycle progression and that endogenous G-quadruplex DNA structures can be stabilized by a small-molecule ligand. Together these findings provide substantive evidence for the formation of G-quadruplex structures in the genome of mammalian cells and corroborate the application of stabilizing ligands in a cellular context to target G-quadruplexes and intervene with their function.
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