当前位置: X-MOL 学术J. Med. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Optimization of the Linker Domain in a Dimeric Compound that Degrades an r(CUG) Repeat Expansion in Cells.
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2020-07-13 , DOI: 10.1021/acs.jmedchem.0c00558
Raphael I Benhamou 1 , Masahito Abe 1 , Shruti Choudhary 1 , Samantha M Meyer 1 , Alicia J Angelbello 1 , Matthew D Disney 1
Affiliation  

RNA repeat expansions are responsible for more than 30 incurable diseases. Among them is myotonic dystrophy type 1 (DM1), the most common form of adult on-set muscular dystrophy. DM1 is caused by an r(CUG) repeat expansion [r(CUG)exp] located in the 3′ untranslated region (UTR) of the dystrophia myotonica protein kinase gene. This repeat expansion is highly structured, forming a periodic array of 5′CUG/3′GUC internal loop motifs. We therefore designed dimeric compounds that simultaneously bind two of these motifs by connecting two RNA-binding modules with peptoid linkers of different geometries and lengths. The optimal linker contains two proline residues and enhances compound affinity. Equipping this molecule with a bleomycin A5 cleaving module converts the simple binding compound into a potent allele-selective cleaver of r(CUG)exp. This study shows that the linker in modularly assembled ligands targeting RNA can be optimized to afford potent biological activity.

中文翻译:

二聚体化合物中接头结构域的优化,该化合物会降解细胞中的r(CUG)重复扩增。

RNA重复扩增导致30多种不治之症。其中包括1型强直性肌营养不良(DM1),这是成人发作性肌营养不良的最常见形式。DM1是由位于营养不良性肌强直蛋白激酶基因3'非翻译区(UTR)的r(CUG)重复扩增[r(CUG)exp ]引起的。这种重复扩展是高度结构化的,形成5'C U G / 3'G U的周期性阵列C内部循环的图案。因此,我们设计了二聚体化合物,该化合物通过将两个RNA结合模块与不同几何形状和长度的类肽接头连接在一起,从而同时结合其中两个基序。最佳接头包含两个脯氨酸残基,并增强了化合物的亲和力。为该分子配备博来霉素A5裂解模块,可将简单的结合化合物转化为r(CUG)exp的有效等位基因选择性裂解器。这项研究表明,可以优化靶向RNA的模块化组装配体中的接头,以提供有效的生物活性。
更新日期:2020-07-23
down
wechat
bug