Inhibitors of protein kinase C. 2. Substituted bisindolylmaleimides with improved potency and selectivity
作者:Peter D. Davis、Lucy H. Elliott、William Harris、Christopher H. Hill、Steven A. Hurst、Elizabeth Keech、M. K. Hari Kumar、Geoffrey Lawton、John S. Nixon、Sandra E. Wilkinson
DOI:10.1021/jm00084a004
日期:1992.3
inhibition of protein kinase C (PKC) by the natural product staurosporine has been used as a basis for the design of substituted bisindolylmaleimides with improved potency over the parent compound. Structure-activity relationships were consistent with the interaction of a cationic group in the inhibitor with a carboxylate group in the enzyme, and the most potent compound had a Ki of 3 nM. The inhibitors were
天然产物星形孢菌素抑制蛋白激酶C(PKC)的假设模式已被用作设计取代母体化合物具有更高效能的取代双吲哚基马来酰亚胺的基础。构效关系与抑制剂中阳离子基团与酶中羧酸酯基团的相互作用一致,最有效的化合物的Ki为3 nM。尽管PKA和PKC的ATP结合区域之间存在广泛的序列同源性,但这些抑制剂与ATP竞争,但仅在高得多的浓度下抑制cAMP依赖性蛋白激酶(PKA)。对三种化合物进行了进一步评估,发现它们可抑制人类同种异体混合淋巴细胞反应,这表明PKC抑制剂在免疫抑制治疗中的潜在用途。