Here we used 19F NMR fragment screening for the discovery of novel, ligand-efficient SPR inhibitors. We report the crystal structures of six chemically diverse inhibitors complexed with SPR, identifying relevant interactions and binding modes in the sepiapterin pocket. Exploration of our initial fragment screening hit led to double-digit nanomolar inhibitors of SPR with excellent ligand efficiency.
在慢性下背痛患者中的全基因组关联研究认为,Sepaapterin还原酶是开发新型镇痛药的重要目标。在这里,我们使用19 F NMR片段筛选来发现新型的,配体有效的SPR抑制剂。我们报告了与SPR配合使用的六种化学多样的抑制剂的晶体结构,确定了Sepaapterin口袋中的相关相互作用和结合模式。对我们最初的片段筛选命中的探索导致了具有出色配体效率的两位数纳摩尔SPR抑制剂。
Evaluation of Substituted <i>N</i>,<i>N</i>′-Diarylsulfonamides as Activators of the Tumor Cell Specific M2 Isoform of Pyruvate Kinase
作者:Matthew B. Boxer、Jian-kang Jiang、Matthew G. Vander Heiden、Min Shen、Amanda P. Skoumbourdis、Noel Southall、Henrike Veith、William Leister、Christopher P. Austin、Hee Won Park、James Inglese、Lewis C. Cantley、Douglas S. Auld、Craig J. Thomas
DOI:10.1021/jm901577g
日期:2010.2.11
The metabolism of cancer cells is altered to support rapid proliferation. Pharmacological activators of a tumor cell specific pyruvate kinase isozyme (PKM2) may be an approach for altering the classic Warburg effect characteristic of aberrant metabolism in cancer cells yielding a novel anti proliferation strategy. In this manuscript, we detail the discovery of a series of Substituted N,N'-diarylsulfonamides as activators of PKM2. The synthesis of numerous analogues and the evaluation of structure-activity relationships are presented as well as assessments of mechanism and selectivity. Several agents are found that have good potencies and appropriate solubility for use as chemical probes of PKM2 including 55 (AC(50) = 43 nM, maximum response = 84%; solubility = 7.3 mu g/mL), 56 (AC(50) = 99 nM, maximum response 84%; solubility = 5.7 mu g/mL), and 58 (AC(50) = 38 nM, maximum response = 82%; solubility 51.2 mu g/mL). The small molecules described here represent first-in-class activators of PKM2