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Quantitative visualization of DNA G-quadruplex structures in human cells
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Quantitative visualization of DNA G-quadruplex structures in human cells
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Quantitative visualization of DNA G-quadruplex structures in human cells
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Journal Article
Quantitative visualization of DNA G-quadruplex structures in human cells
2013
Overview
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.
A structure-specific antibody generated and employed to visualize DNA G-quadruplex structures in human cells shows that these structures are modulated during the cell cycle and can be stabilized by a small-molecule ligand. This provides substantive evidence for endogenous DNA G-quadruplex formation in mammalian cells.
