Discovery of AG-270, a First-in-Class Oral MAT2A Inhibitor for the Treatment of Tumors with Homozygous <i>MTAP</i> Deletion
作者:Zenon Konteatis、Jeremy Travins、Stefan Gross、Katya Marjon、Amelia Barnett、Everton Mandley、Brandon Nicolay、Raj Nagaraja、Yue Chen、Yabo Sun、Zhixiao Liu、Jie Yu、Zhixiong Ye、Fan Jiang、Wentao Wei、Cheng Fang、Yi Gao、Peter Kalev、Marc L. Hyer、Byron DeLaBarre、Lei Jin、Anil K. Padyana、Lenny Dang、Joshua Murtie、Scott A. Biller、Zhihua Sui、Kevin M. Marks
DOI:10.1021/acs.jmedchem.0c01895
日期:2021.4.22
MAT2A with small-molecule inhibitors identified cellular adaptations that blunted their efficacy. Here, we report the discovery of highly potent, selective, orally bioavailable MAT2A inhibitors that overcome these challenges. Fragment screening followed by iterative structure-guided design enabled >10 000-fold improvement in potency of a family of allosteric MAT2A inhibitors that are substrate noncompetitive
最近,代谢酶蛋氨酸腺苷基转移酶2A(MAT2A)被认为是癌症的合成致死靶标,与甲基硫腺苷磷酸化酶(MTAP)基因的缺失有关,该基因与CDKN2A肿瘤抑制物相邻并被CDKN2A编码在大约15%的癌症中。先前使用小分子抑制剂靶向MAT2A的尝试确定了削弱其功效的细胞适应性。在这里,我们报告发现了克服这些挑战的高效,选择性,口服生物利用度MAT2A抑制剂的发现。片段筛选以及随后的迭代结构指导设计使变构MAT2A抑制剂家族的底物不具有竞争性,并且抑制了酶S-腺苷甲硫氨酸(SAM)从酶活性位点的释放,其效力提高了10000倍以上。我们证明有效的MAT2A抑制剂可大大降低癌细胞中的SAM水平,并选择性阻断MTAP的增殖组织培养和异种移植肿瘤中都存在-null细胞。这些数据支持将AG-270推进当前的临床研究(ClinicalTrials.gov NCT03435250)。