Identification of substituted 2-thio-6-oxo-1,6-dihydropyrimidines as inhibitors of human lactate dehydrogenase |
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Authors: | Peter S Dragovich Benjamin P Fauber Laura B Corson Charles Z Ding Charles Eigenbrot HongXiu Ge Anthony M Giannetti Thomas Hunsaker Sharada Labadie Yichin Liu Shiva Malek Borlan Pan David Peterson Keith Pitts Hans E Purkey Steve Sideris Mark Ultsch Erica VanderPorten Xuying Zhang |
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Institution: | 1. Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA;2. WuXi AppTec Co., Ltd, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, PR China |
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Abstract: | A novel 2-thio-6-oxo-1,6-dihydropyrimidine-containing inhibitor of human lactate dehydrogenase (LDH) was identified by high-throughput screening (IC50 = 8.1 μM). Biochemical, surface plasmon resonance, and saturation transfer difference NMR experiments indicated that the compound specifically associated with human LDHA in a manner that required simultaneous binding of the NADH co-factor. Structural variation of the screening hit resulted in significant improvements in LDHA biochemical inhibition activity (best IC50 = 0.48 μM). A crystal structure of an optimized compound bound to human LDHA was obtained and explained many of the observed structure–activity relationships. |
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Keywords: | Lactate dehydrogenase X-ray crystal structure Glycolysis Tumor metabolism |
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