The invention provides compounds, compositions and therapeutic methods. The compounds and compositions can be used for the treatment of myotonic dystrophy. The compounds can selectively bind to CUG repeats in RNA, or to CTG repeats in DNA, and inhibit replication of the nucleic acids. RNA-targeted therapeutic agents for the treatment of myotonic dystrophy type 1 (DM1) are described. In one embodiment, two bisamidinium ligands are linked using “click” chemistry to form a heterodimer that is a potent inhibitor of the MBNL1-rCUGexp complex (KI=25±8 nM), is relatively non-toxic to HeLa cells, dissolves nuclear foci, corrects >80% of the IR misregulated alternative splicing in DM1 model cells (1 μM), and shows improvement of disease phenotypes in a DM1 Drosophila model.
本发明提供了化合物、组合物和治疗方法。这些化合物和组合物可用于治疗肌营养不良症。这些化合物可选择性地与 RNA 中的 CUG 重复序列或 DNA 中的 CTG 重复序列结合,并抑制核酸的复制。本文描述了用于治疗 1 型肌营养不良症(
DM1)的 RNA 靶向治疗剂。在一个实施方案中,使用 "click "
化学方法将两种双脒
配体连接起来,形成一种异二聚体,它是 MBNL1-rCUGexp 复合物的强效
抑制剂(KI=25±8 nM),对 HeLa 细胞相对无毒,能溶解核病灶,能纠正
DM1 模型细胞中大于 80% 的 IR 错调替代剪接(1 μM),并能改善
DM1 果蝇模型中的疾病表型。