Synthesis, evaluation and molecular modeling of cyclic tetrapeptide histone deacetylase inhibitors as anticancer agents
作者:Dawei Huang、Xiaohui Li、Lei Sun、Zhilong Xiu、Norikazu Nishino
DOI:10.1002/psc.2392
日期:2012.4
Histone deacetylase inhibitors (HDACIs) are a promising class of anticancer agents. To examine whether a slight change in the recognition domain could alter their inhibitory activity, we synthesized a series of cyclo(−l‐Am7(S2Py)‐Aib‐l‐Phe(n‐Me)‐d‐Pro)derivatives and evaluated their HDAC inhibitory and anticancer activities. The peptides exhibited potent HDAC inhibitory activity and inhibited three
组蛋白脱乙酰基酶抑制剂(HDACIs)是一类有前途的抗癌药。为了检查识别域的轻微变化是否会改变其抑制活性,我们合成了一系列环(− l‐ Am7(S2Py)‐Aib‐ l‐ Phe(n‐ Me)‐d‐ Pro)衍生物并对其进行了评估HDAC的抑制和抗癌活性。该肽表现出有效的HDAC抑制活性,并用IC 50抑制了三种人类癌细胞系在微摩尔范围内。进行了对接和分子动力学模拟,以探索I类和II类HDAC与这些抑制剂的相互作用机理。结果表明,活性部位的锌离子配位了HDACs的五个原子和抑制剂的硫原子。这些化合物的金属结合域与HDAC2相互作用,并且这些化合物的表面识别域通过氢键与HDAC4相互作用。疏水相互作用也为稳定复合物提供了有利的贡献。从这项研究中获得的结果将有助于我们设计一些可能有效的HDACI的新型环状四肽。版权所有©2012欧洲肽协会和John Wiley&Sons,Ltd.