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Labeling DNA Probes

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Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Published on: October 6, 2022

New Ruthenium-Based Probes for Selective G-Quadruplex Targeting.

Guillaume Piraux¹, Laure Bar², Michaël Abraham¹

¹Institut de la Matière Condensée et des Nanosciences (IMCN)-Molécules, Solides et Réactivité (MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|June 14, 2017

Summary

Researchers developed novel Ruthenium(II) complexes that selectively bind to G-quadruplex (G4) structures. These G4 structures are crucial in cancer development, making these complexes potential tools for cancer research and drug discovery.

Keywords:

Chichibabin G-quadruplexes pyrazine ruthenium surface plasmon resonance

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Published on: September 21, 2017

Area of Science:

Coordination Chemistry
Biophysical Chemistry
Cancer Biology

Background:

G-quadruplex (G4) structures in telomeric regions are implicated in cancer development.
Developing specific G4 binders is crucial for understanding their role and for anticancer drug discovery.
Ruthenium(II) complexes are versatile DNA probes due to tunable properties and light-excitation capabilities.

Purpose of the Study:

To synthesize and characterize novel Ruthenium(II) complexes.
To investigate the potential of these complexes as selective probes for G-quadruplex structures.
To explore their utility in cancer research and as potential anticancer drug candidates.

Main Methods:

Synthesis of new Ru(II) complexes featuring a novel dipyrazino[2,3-a:2',3'-h]phenazine (dph) ligand.
Luminescence spectroscopy to probe interactions.
Surface Plasmon Resonance (SPR) for binding affinity and selectivity studies.
Computational modeling to understand complex behavior.

Main Results:

Successful synthesis of novel Ru(II)-dph complexes.
Demonstrated selective binding of the complexes to G-quadruplex structures.
Luminescence and SPR data confirmed G4 recognition.
Computational studies supported the experimental findings.

Conclusions:

The novel Ru(II) complexes are effective and selective probes for G-quadruplex DNA.
These findings open avenues for developing new diagnostic tools and therapeutic strategies targeting G4 structures in cancer.