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一种用于四重复核酸的催化和选择性剪切分子工具

Matteo Nadai¹, Filippo Doria², Matteo Scalabrin¹

¹Department of Molecular Medicine , University of Padua , via Gabelli 63 , 35121 Padua , Italy.

Journal of the American Chemical Society

|October 24, 2018

概括

一种新型的铜复合物选择性地分裂G-四重复 DNA,在反应性氧物种生成中表现出独特的催化活性. 这种G-四倍体DNA裂变取决于结合亲和力和特定的结构特征.

科学领域:

超分子化学
DNA纳米技术
化学生物学

背景情况:

在各种生物过程中发挥作用.
针对G四重体是一种治疗干预策略.
开发选择性G-四重复结合剂和切割剂至关重要.

研究的目的:

设计和描述用于G-四重复的DNA结合和裂变的铜复合体.
调查复合物的催化活性在反应性氧物种 (ROS) 的产生.
阐明G-四重复裂变的选择性机制.

主要方法:

合成和表征一个铜复合体集成到纳二胺支架.
福斯特共振能量转移 (FRET) 化试验
循环二极化 (CD) 光谱.
核磁共振 (NMR) 光谱学
凝电泳用于DNA测序.
质量谱测试

主要成果:

设计的铜复合物有效地结合和分裂G-四重复 DNA.
该复合物在产生ROS方面表现出催化活性.
实验显示了特定G-四重复序列的意外选择性.
选择性归因于目标G四重复的结合亲和力和结构特征.

结论:

一种新型的铜复合体显示出强大而有选择性的G-四重体DNA裂变.
复合物的活动与ROS生成和特定的G-四重复结构识别有关.
这项工作为开发基于G-四重复的向治疗提供了基础.

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