Structure-based design of selective high-affinity telomeric quadruplex-binding ligands
作者:Caterina Maria Lombardo、Iria Sánchez Martínez、Shozeb Haider、Valérie Gabelica、Edwin De Pauw、John E. Moses、Stephen Neidle
DOI:10.1039/c0cc02917c
日期:——
A library of triazole-based telomeric quadruplex-selective ligands has been developed that mimic an established family of tri-substituted acridine-based ligands, using crystal structure data as a starting-point for computer-based design. Binding affinities, estimated by electrospray mass spectrometry, are in accord with the design concept.
Besides, compound 9g exhibited cholinesterase inhibitory activity, with its IC50 values of 0.86 μM and 0.51 μM for acetylcholinesterase and butyrylcholinesterase, respectively. In addition, compound 9g showed good anti-oxidation effect with oxygen radical absorbance capacity (ORAC) value of 2.29. Conclusions Compound 9g was found to be a potentmulti-target-directed agent for Alzheimer'sdisease. General
背景 阿尔茨海默氏病(AD)是一种进行性神经退行性脑部疾病,其特征在于痴呆,认知障碍和记忆力减退。不同的因素都与AD的发展,如增加的水平β淀粉样蛋白(β),乙酰胆碱,金属离子解除管制,超磷酸化的tau蛋白,和氧化应激。 方法 使用了下列方法:1的有机合成ħ -phenanthro [9,10- d ]咪唑衍生物,抑制自介导的和金属诱导A的β 1-42聚集,乙酰胆碱酯酶和丁酰胆碱酯酶抑制研究,抗氧化活性研究,CD,MTT分析,透射电子显微镜,斑点图分析,凝胶电泳,蛋白质印迹和分子对接研究。 结果 我们合成并表征了一种新型的1 H-菲[9,10- d ]咪唑衍生物作为AD治疗的多功能剂。我们的研究结果表明,大多数这些衍生物表现出强烈的一个β聚集抑制作用。化合物9克有74%A β 1-42聚集抑制在10μM浓度的效果,其IC 50为自感应甲μM6.5的值β 1-42聚集。该化合物还显示的金属介导的(铜很好的抑制作用2
Stabilization of G-Quadruplex DNA by Highly Selective Ligands via Click Chemistry
作者:Adam D. Moorhouse、Ana Mafalda Santos、Mekala Gunaratnam、Michael Moore、Stephen Neidle、John E. Moses
DOI:10.1021/ja0661919
日期:2006.12.1
A series of G-quadruplex stabilizing compounds have been prepared via click chemistry employing the Cu(I)-catalyzed Huisgen reaction. These compounds were shown to bind tightly to G-quadruplex DNA even in the presence of competing high concentrations of duplex DNA. Furthermore, a modified TRAP assay has shown that some of these compounds also inhibit telomerase at low micromolar concentration.