Targeting DNA G-quadruplexes with Helical Small Molecules

Overview

Journal Chembiochem

Specialty Biochemistry

Date 2014 Sep 27

PMID 25256604

Citations 8

Authors

Sebastian Muller

Katta Laxmi-Reddy

Prakrit V Jena

Benoit Baptiste

Zeyuan Dong

Frederic Godde

Taekjip Ha

Raphael Rodriguez

Shankar Balasubramanian

Ivan Huc

Affiliations

Soon will be listed here.

Abstract

We previously identified quinoline-based oligoamide helical foldamers and a trimeric macrocycle as selective ligands of DNA quadruplexes. Their helical structures might permit targeting of the backbone loops and grooves of G-quadruplexes instead of the G-tetrads. Given the vast array of morphologies G-quadruplex structures can adopt, this might be a way to achieve sequence selective binding. Here, we describe the design and synthesis of molecules based on macrocyclic and helically folded oligoamides. We tested their ability to interact with the human telomeric G-quadruplex and an array of promoter G-quadruplexes by using FRET melting assay and single-molecule FRET. Our results show that they constitute very potent ligands--comparable to the best so far reported. Their modes of interaction differ from those of traditional tetrad binders, thus opening avenues for the development of molecules specific for certain G-quadruplex conformations.

Citing Articles

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