1935534-79-4Relevant academic research and scientific papers
Discovery of Potent, Selective, and Structurally Novel Dot1L Inhibitors by a Fragment Linking Approach
M?bitz, Henrik,Machauer, Rainer,Holzer, Philipp,Vaupel, Andrea,Stauffer, Frédéric,Ragot, Christian,Caravatti, Giorgio,Scheufler, Clemens,Fernandez, Cesar,Hommel, Ulrich,Tiedt, Ralph,Beyer, Kim S.,Chen, Chao,Zhu, Hugh,Gaul, Christoph
, p. 338 - 343 (2017)
Misdirected catalytic activity of histone methyltransferase Dot1L is believed to be causative for a subset of highly aggressive acute leukemias. Targeting the catalytic domain of Dot1L represents a potential therapeutic approach for these leukemias. In the context of a comprehensive Dot1L hit finding strategy, a knowledge-based virtual screen of the Dot1L SAM binding pocket led to the discovery of 2, a non-nucleoside fragment mimicking key interactions of SAM bound to Dot1L. Fragment linking of 2 and 3, an induced back pocket binder identified in earlier studies, followed by careful ligand optimization led to the identification of 7, a highly potent, selective and structurally novel Dot1L inhibitor.
Discovery of Novel Dot1L Inhibitors through a Structure-Based Fragmentation Approach
Chen, Chao,Zhu, Hugh,Stauffer, Frédéric,Caravatti, Giorgio,Vollmer, Susanne,Machauer, Rainer,Holzer, Philipp,M?bitz, Henrik,Scheufler, Clemens,Klumpp, Martin,Tiedt, Ralph,Beyer, Kim S.,Calkins, Keith,Guthy, Daniel,Kiffe, Michael,Zhang, Jeff,Gaul, Christoph
supporting information, p. 735 - 740 (2016/08/24)
Oncogenic MLL fusion proteins aberrantly recruit Dot1L, a histone methyltransferase, to ectopic loci, leading to local hypermethylation of H3K79 and misexpression of HoxA genes driving MLL-rearranged leukemias. Inhibition of the methyltransferase activity of Dot1L in this setting is predicted to reverse aberrant H3K79 methylation, leading to repression of leukemogenic genes and tumor growth inhibition. In the context of our Dot1L drug discovery program, high-throughput screening led to the identification of 2, a weak Dot1L inhibitor with an unprecedented, induced pocket binding mode. A medicinal chemistry campaign, strongly guided by structure-based consideration and ligand-based morphing, enabled the discovery of 12 and 13, potent, selective, and structurally completely novel Dot1L inhibitors.
