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A Ligand That Targets CUG Trinucleotide Repeats

机译:靶向CUG三核苷酸重复的配体

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The development of small molecules that can recognize specific RNA secondary and tertiary structures is currently an important research topic for developing tools to modulate gene expression and therapeutic drugs. Expanded CUG trinucleotide repeats, known as toxic RNA, capture the splicing factor MBNL1 and are causative of neurological disorder myotonic dystrophy type 1 (DM1). Herein, the rational molecular design, synthesis, and binding analysis of 2,9-diaminoalkyl-substituted 1,10-phenanthroline (DAP), which bound to CUG trinucleotide repeats, is described. The results of melting temperature (T-m) analyses, surface plasmon resonance (SPR) assay, and electrospray spray ionization time-of-flight (ESI-TOF) mass spectrometry showed that DAP bound to r(CUG)(9) but not to r(CAG)(9) and r(CGG)(9). The dual luciferase assay clearly indicated DAP bound to the r(CUG)(n) repeat by affecting the translation in vitro.
机译:可以识别特定的RNA二级和三级结构的小分子的开发是当前重要的研究课题,用于开发调节基因表达和治疗药物的工具。扩展的CUG三核苷酸重复序列(称为毒性RNA)捕获了剪接因子MBNL1,是神经系统疾病1型强直性营养不良(DM1)的病因。在此,描述了与CUG三核苷酸重复序列结合的2,9-二氨基烷基取代的1,10-菲咯啉(DAP)的合理分子设计,合成和结合分析。熔融温度(Tm)分析,表面等离振子共振(SPR)分析和电喷雾电离飞行时间(ESI-TOF)质谱分析的结果表明,DAP结合到r(CUG)(9)而不是r (CAG)(9)和r(CGG)(9)。双重荧光素酶测定法清楚地表明DAP通过影响体外翻译而与r(CUG)(n)重复序列结合。

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