Affinity-Driven Covalent Modulator of the Glyceraldehyde-3-Phosphate Dehydrogenase (GAPDH) Cascade
作者:Jeffy Chern、Chun-Ping Lu、Zhanxiong Fang、Ching-Ming Chang、Kuo-Feng Hua、Yi-Ting Chen、Cheng Yang Ng、Yi-Lin Sophia Chen、Yulin Lam、Shih-Hsiung Wu
DOI:10.1002/anie.201801618
日期:2018.6.11
NMR spectroscopy showed that 1 resisted an off‐target thiolate, thus indicating that 1 was a target covalent inhibitor (TCI). By identifying the pharmacophore of 1 (α,β‐unsaturated moiety), a probe derived from 1 was designed and synthesized for TCI‐oriented activity‐based proteome profiling. By MS/MS and computer‐guided molecular biology approaches, an affinity‐driven Michael addition of the noncatalytic
传统药物为探索有效的先导化合物提供了肥沃的土壤,然而,将其转化为现代药物在解密对其生物学活性具有机械学意义的靶标方面充满了挑战。在这里,我们揭示(Z)-(+)-异硫氰酸盐(1)对多药耐药(MDR)癌细胞系和小鼠异种移植物表现出显着的抑制作用。NMR光谱显示1抵抗脱靶的硫醇盐,因此表明1是目标共价抑制剂(TCI)。通过鉴定1(α,β-不饱和部分)的药效基团,衍生自1的探针是为面向TCI的基于活动的蛋白质组分析而设计和合成的。通过MS / MS和计算机指导的分子生物学方法,发现GAPDH的非催化C247残基的亲和力驱动的迈克尔加成可通过非规范的核GAPDH移位来控制凋亡的“ ON / OFF”切换,从而绕开了常见的MDR癌症的凋亡抗性途径。