Synthesis, Bioactivity, Docking and Molecular Dynamics Studies of Furan-Based Peptides as 20S Proteasome Inhibitors
作者:Qi Sun、Bo Xu、Yan Niu、Fengrong Xu、Lei Liang、Chao Wang、Jiapei Yu、Gang Yan、Wei Wang、Hongwei Jin、Ping Xu
DOI:10.1002/cmdc.201402484
日期:2015.3
describe further optimizations of the furan‐based peptides, and a series of dipeptidic and tripeptidic inhibitors were designed and synthesized, aiming at improved potency and better solubility. Most of the tripeptidic inhibitors demonstrated improved potency and selectivity as β5 subunit inhibitors in both enzymatic and cellular assays, and good antineoplastic activities in various tumor cell lines were
蛋白酶体抑制剂是用于许多疗法的有前途的化合物,包括心血管疾病和眼病,糖尿病和癌症。我们先前报道了一系列基于呋喃的肽抑制剂,它们对蛋白酶体β5亚基具有中等效力,并假设C末端呋喃酮基序可以与催化残基苏氨酸1形成共价键。在这种情况下,我们描述了进一步的优化方法设计并合成了一系列基于呋喃的肽,并设计了一系列二肽和三肽抑制剂,旨在提高效能和更好的溶解度。在酶和细胞分析中,大多数三肽抑制剂均表现出作为β5亚基抑制剂的增强的效能和选择性,并且在各种肿瘤细胞系中也观察到了良好的抗肿瘤活性。然而,没有观察到对二肽化合物有抑制作用,这使我们推测采用了非共价结合方式。进行了对接研究和分子动力学模拟,以验证这一推测,结果表明,呋喃基酮基序和Thr1之间的距离略长,无法形成共价键。