Unraveling the relationship between structure and stabilization of triarylpyridines as G-quadruplex binding ligands
作者:N. M. Smith、Gaëlle Labrunie、Ben Corry、Phong Lan Thao Tran、Marck Norret、Mojgan Djavaheri-Mergny、Colin L. Raston、Jean-Louis Mergny
DOI:10.1039/c1ob05560g
日期:——
A series of novel 2,4,6-triarylpyridines have been synthesized and their interactions with intramolecular G-quadruplexes have been measured by Förster Resonance Energy Transfer (FRET) melting and Fluorescent Intercalator Displacement (FID) assays. A few of these compounds exhibit stabilization of G4-DNA that is comparable to other benchmark G4-DNA ligands with fair to excellent G4-DNA vs. duplex selectivity and significant cytotoxicity towards HeLa cells. The nature of the 4-aryl substituents along with side chain length governs the G4-DNA stabilization ability of the compounds. In addition, we demonstrate that there is a strong correlation between the ability of the compounds to stabilize the same G4-DNA sequence in K+ and Na+ conditions and a strong correlation between the ability of the compounds to stabilize different G4-DNA sequences in K+ or Na+ buffer.
我们合成了一系列新型 2,4,6-三芳基吡啶,并通过福斯特共振能量转移 (FRET) 熔化和荧光嵌入剂置换 (FID) 测定法测量了它们与分子内 G-四链体的相互作用。其中一些化合物表现出与其他基准 G4-DNA 配体相当的 G4-DNA 稳定性,具有相当出色的 G4-DNA 与双链体选择性以及对 HeLa 细胞的显着细胞毒性。 4-芳基取代基的性质以及侧链长度决定了化合物的 G4-DNA 稳定能力。此外,我们证明化合物在 K+ 和 Na+ 条件下稳定相同 G4-DNA 序列的能力之间存在很强的相关性,而化合物在 K+ 或 Na+ 条件下稳定不同 G4-DNA 序列的能力之间也存在很强的相关性。 Na+缓冲液。