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Updated: Jun 6, 2026

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Small-molecule-mediated G-quadruplex isolation from human cells.

Sebastian Müller1, Sunita Kumari, Raphaël Rodriguez

  • 1Department of Chemistry, The University of Cambridge, Cambridge CB2 1EW, UK.

Nature Chemistry
|November 26, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers developed a novel small molecule probe to selectively isolate G-quadruplex DNA and RNA structures. This tool successfully identified G-quadruplexes in human cells, particularly at telomeres, confirming their presence in vivo.

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Chemical Biology

Background:

  • Guanine-rich nucleic acids form G-quadruplex structures.
  • G-quadruplexes have potential roles in cancer and other biological processes.
  • Small molecules are crucial for studying cellular mechanisms.

Purpose of the Study:

  • To develop a synthetic small molecule for selective G-quadruplex isolation.
  • To validate the molecule's efficacy in vitro and in human cells.

Main Methods:

  • Design and synthesis of an N,N'-bis(2-quinolinyl)pyridine-2,6-dicarboxamide derivative.
  • In vitro testing on various DNA and RNA G-quadruplexes.
  • Application of the probe to isolate telomeric G-quadruplexes from human cells.

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Last Updated: Jun 6, 2026

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers
08:28

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

Published on: September 19, 2017

A G-quadruplex DNA-affinity Approach for Purification of Enzymatically Active G4 Resolvase1
11:25

A G-quadruplex DNA-affinity Approach for Purification of Enzymatically Active G4 Resolvase1

Published on: March 18, 2017

Single-Molecule Fluorescence Visualization of DNA Polymerase Dynamics at G-Quadruplexes
05:37

Single-Molecule Fluorescence Visualization of DNA Polymerase Dynamics at G-Quadruplexes

Published on: April 4, 2025

Main Results:

  • The synthetic molecule selectively isolates G-quadruplexes in vitro.
  • The method successfully isolates telomeric G-quadruplex motifs from human cells.
  • Telomeres are confirmed as targets, supporting in vivo G-quadruplex formation.

Conclusions:

  • A novel small molecule probe enables selective G-quadruplex isolation.
  • The findings provide evidence for G-quadruplex formation in human cells, especially at telomeres.
  • This methodology offers a valuable tool for studying G-quadruplex biology.