通过多价值诱导的绑定单元对Telomeric G-Quadruplexes进行适应性和特定的识别
Jibin Abraham Punnoose1, Yue Ma2, Yuanyuan Li1
1Department of Chemistry and Biochemistry, Kent State University , Kent, Ohio 44242, United States.
Journal of the American Chemical Society
|May 16, 2017
概括
研究人员开发了一种多价性策略,专门针对多个DNAG四重复. 一种端美四聚合物与多聚合物G四聚合物结合的强度是单聚合物结合的40倍以上.
科学领域:
- 生物化学
- 分子生物学
- 化学生物学
背景情况:
- 小分子联体可以准DNAG四重复,调节细胞功能.
- 人类基因组包含超过716,000个G-四重复位,这对特定的连接物构成挑战.
- 开发选择性G-四重复向策略对于治疗应用至关重要.
研究的目的:
- 创建一种基于多价值的机制,专门针对多个端粒G四重复合体.
- 为了评估合成的四重体端美沙丁衍生物与多个G-四重体的结合亲和力.
- 阐明绑定机制,使选择性G-四重复向成为可能.
主要方法:
- 一个四度制药的端美他衍生物的合成.
- 使用激光的单分子机械展开实验.
- 对联体和G-四重复结构之间的多价结合相互作用的分析.
主要成果:
- 与单体基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质基质
- 发现了一种新的多价性诱导解叠 (PIU) 结合机制.
- 联体的堆叠单元被拆解以促进与多重体G-四重体的强有力的多价结合,克服固体障碍.
结论:
- 适应性PIU结合机制提供了选择性向聚合物生物分子的通用策略.
- 多价性是一种有前途的方法来增强G-四重复合联体相互作用的特异性.
- 这项研究为设计针对G-quadruplex相关疾病的向治疗提供了基础.
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