4hxn | pdb_00004hxn
Brd4 Bromodomain 1 complex with 4-(2-FLUOROPHENYL)-1,3-THIAZOL-2(3H)-ONE inhibitor
Structural highlights
DiseaseBRD4_HUMAN Note=A chromosomal aberration involving BRD4 is found in a rare, aggressive, and lethal carcinoma arising in midline organs of young people. Translocation t(15;19)(q14;p13) with NUT which produces a BRD4-NUT fusion protein.[1] [2] FunctionBRD4_HUMAN Plays a role in a process governing chromosomal dynamics during mitosis (By similarity). Publication Abstract from PubMedRecognizing acetyllysine of histone is a vital process of epigenetic regulations, which is mediated by a protein module called bromodomain. To contribute novel scaffolds for developing into bromodomain inhibitors, we utilize a fragment-based drug discovery approach. By successively applying docking and X-ray crystallography, we were able to identify 9 fragment hits from diffracting more than 60 crystals. In the present work, we described four of them, and carried out the integrated lead optimization for fragment 8, which bears a 2-thiazolidinone core. After several rounds of structure guided modifications, we assessed the druggability of 2-thiazolidinone by modulating in vitro pharmacokinetic studies and cellular activity assay. The results showed that two potent compounds of 2-thiazolidinones have good metabolic stability. Also the cellular assay confirmed the activities of 2-thiazolidinones. Together, we hope the identified 2-thiazolidinone chemotype as well as other fragment hits described herein, can stimulate researchers to develop more diversified bromodomain inhibitors. Fragment-based Drug Discovery of 2-thiazolidinones as Inhibitors of the Histone Reader BRD4 Bromodomain.,Zhao L, Cao D, Chen T, Wang Y, Miao ZH, Xu Y, Chen W, Wang X, Li Y, Du Z, Xiong B, Li J, Xu C, Zhang N, He J, Shen J J Med Chem. 2013 Mar 26. PMID:23530754[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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