Design of Potent mRNA Decapping Scavenger Enzyme (DcpS) Inhibitors with Improved Physicochemical Properties To Investigate the Mechanism of Therapeutic Benefit in Spinal Muscular Atrophy (SMA)
作者:Ariamala Gopalsamy、Arjun Narayanan、Shenping Liu、Mihir D. Parikh、Robert E. Kyne、Olugbeminiyi Fadeyi、Michael A. Tones、Jonathan J. Cherry、Joseph F. Nabhan、Gregory LaRosa、Donna N. Petersen、Carol Menard、Timothy L. Foley、Stephen Noell、Yong Ren、Paula M. Loria、Jodi Maglich-Goodwin、Haojing Rong、Lyn H. Jones
DOI:10.1021/acs.jmedchem.7b00124
日期:2017.4.13
4-diaminoquinazoline RG3039 (compound 1), a member of a chemical series that was identified and optimized using an SMN2 promoter screen, prolongs survival and improves motor function in a mouse model of spinal muscular atrophy (SMA). It is a potent inhibitor of the mRNA decapping scavenger enzyme (DcpS), but the mechanism whereby DcpS inhibition leads to therapeutic benefit is unclear. Compound 1 is a dibasic lipophilic
C-5取代的2,4-二氨基喹唑啉RG3039(化合物1)是使用SMN2启动子筛选进行鉴定和优化的化学系列的成员,在脊髓性肌萎缩症(SMA)小鼠模型中可以延长生存期并改善其运动功能。它是有效的mRNA脱盖清除剂(DcpS)抑制剂,但尚不清楚DcpS抑制导致治疗益处的机制。化合物1是一种二元亲脂性分子,预计会在溶酶体中蓄积。了解体内功效是由于DcpS抑制或化学型的物理化学性质引起的其他影响,我们进行了基于结构的分子设计,以鉴定具有改善的物理化学性质的DcpS抑制剂。在本文中,我们描述了这些DcpS抑制剂的设计,合成和体外药理学表征,以及PF-DcpSi(化合物24)的体内小鼠CNS PK分布图,该化合物是在SMA小鼠模型中有效的类似物之一。