MODULARLY ASSEMBLED SMALL MOLECULES FOR THE TREATMENT OF MYOTONIC DYSTROPHY TYPE 1
申请人:The Scripps Research Institute
公开号:US20180089049A1
公开(公告)日:2018-03-29
Transcriptomes provide a myriad of potential RNAs that could be the targets of therapeutics or chemical genetic probes of function. Cell permeable small molecules, however, generally do not exploit these targets, owing to the difficulty in the design of high affinity, specific small molecules targeting RNA. As part of a general program to study RNA function using small molecules, we designed bioactive, modularly assembled small molecules that target the non-coding expanded RNA repeat that causes myotonic dystrophy type 1 (DM1), r(CUG)
exp
. Herein, we present a rigorous study to elucidate features in modularly assembled compounds that afford bioactivity. Different modular assembly scaffolds were investigated including polyamines, α-peptides, β-peptides, and peptide tertiary amides (PTAs). Based on activity as assessed by improvement of DM1-associated defects, stability against proteases, cellular permeability, and toxicity, we discovered that constrained backbones, namely PTAs, are optimal.
转录组提供了大量潜在的RNA,可以成为治疗靶点或功能化学遗传探针的目标。然而,细胞可渗透的小分子通常不利用这些靶点,因为设计高亲和力、特异性小分子靶向RNA的困难。作为一个研究使用小分子研究RNA功能的普遍计划的一部分,我们设计了能够靶向导致肌萎缩性脊柱肌肉营养不良症类型1(DM1)的非编码扩展RNA重复物质r(CUG)exp的生物活性、模块化组装的小分子。在这里,我们提出了一项严谨的研究,以阐明模块化组装化合物中提供生物活性的特征。研究了不同的模块化组装支架,包括多胺、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,我们发现受限制的骨架,即PTAs,是最佳的。