To study RNA function using small molecules, we designed bioactive, modularly assembled small molecules that target the noncoding expanded RNA repeat that causes myotonic dystrophy type 1 (Dml), r(CUG)exp. Different modular assembly scaffolds were investigated including polyamines, alpha-peptides, beta-peptides, and peptide tertiary amides (PT As). Based on activity as assessed by improvement of DM1 -associated defects, stability against proteases, cellular permeability, and toxicity, we discovered that constrained backbones, namely PT As, are optimal.
为了研究使用小分子来研究RNA功能,我们设计了具有
生物活性的模块化组装的小分子,以靶向导致肌无力型肌萎缩症1型(
DMl)的非编码扩展RNA重复物质r(CUG)exp。我们研究了不同的模块化组装支架,包括聚胺、α-肽、β-肽和肽三级酰胺(
PTAs)。根据通过改善
DM1相关缺陷评估的活性、对
蛋白酶的稳定性、细胞渗透性和毒性,我们发现受限的骨架,即
PTAs,是最佳选择。