Potent, Selective, and Cell Active Protein Arginine Methyltransferase 5 (PRMT5) Inhibitor Developed by Structure-Based Virtual Screening and Hit Optimization
作者:Ruifeng Mao、Jingwei Shao、Kongkai Zhu、Yuanyuan Zhang、Hong Ding、Chenhua Zhang、Zhe Shi、Hualiang Jiang、Dequn Sun、Wenhu Duan、Cheng Luo
DOI:10.1021/acs.jmedchem.7b00587
日期:2017.7.27
been validated as an anticancer target in mantle cell lymphoma. In this study, we found a potent and selective PRMT5 inhibitor by performing structure-based virtual screening and hit optimization. The identified compound 17 (IC50 = 0.33 μM) exhibited a broad selectivity against a panel of other methyltransferases. The direct binding of 17 to PRMT5 was validated by surface plasmon resonance experiments
PRMT5在多种细胞过程中起着重要作用,并在几种人类恶性肿瘤中被上调。此外,PRMT5已被确认为套细胞淋巴瘤的抗癌靶标。在这项研究中,我们通过执行基于结构的虚拟筛选和命中优化,发现了一种有效的选择性PRMT5抑制剂。鉴定出的化合物17(IC 50 = 0.33μM)对一组其他甲基转移酶表现出广泛的选择性。通过表面等离振子共振实验验证了17与PRMT5的直接结合,K d为0.987μM。动力学实验表明17是除底物以外的SAM竞争性抑制剂。另外17提示对MV4-11细胞具有选择性的抗增殖作用,进一步的研究表明,细胞抗肿瘤活性的机制是由于PRMT5介导的SmD3甲基化的抑制。17可能是一种有前途的先导化合物,可以进一步了解PRMT5,并可能有助于开发白血病适应症的治疗方法。