Synthesis and Structure–Activity Relationship Investigation of Adenosine-Containing Inhibitors of Histone Methyltransferase DOT1L
作者:Justin L. Anglin、Lisheng Deng、Yuan Yao、Guobin Cai、Zhen Liu、Hong Jiang、Gang Cheng、Pinhong Chen、Shuo Dong、Yongcheng Song
DOI:10.1021/jm300917h
日期:2012.9.27
Histone3-lysine79 (H3K79) methyltransferase DOT1L has been found to be a drug target for acute leukemia with MLL (mixed lineage leukemia) gene translocations. A total of 55 adenosine-containing compounds were designed and synthesized, among which several potent DOT1L inhibitors were identified with Ki values as low as 0.5 nM. These compounds also show high selectivity (>4500-fold) over three other histone methyltransferases
组蛋白 3-赖氨酸 79 (H3K79) 甲基转移酶 DOT1L 已被发现是具有 MLL(混合谱系白血病)基因易位的急性白血病的药物靶点。总共设计和合成了 55 种含腺苷的化合物,其中鉴定了几种有效的 DOT1L 抑制剂,K i值低至 0.5 nM。与其他三种组蛋白甲基转移酶相比,这些化合物还显示出高选择性(> 4500 倍)。讨论了这些化合物对 DOT1L 的抑制活性的构效关系 (SAR)。强效 DOT1L 抑制剂对 MLL 易位白血病细胞系 MV4;11 和 THP1 的增殖具有选择性活性,EC 504–11 μM 的值。等温滴定量热研究表明,两种代表性抑制剂以高亲和力与 DOT1L:核小体复合物结合,仅与酶辅因子 SAM(S-腺苷-1-甲硫氨酸)竞争,而不与底物核小体竞争。