Exploration of novel piperazine or piperidine constructed non-covalent peptidyl derivatives as proteasome inhibitors
作者:Rangxiao Zhuang、Lixin Gao、Xiaoqing Lv、Jianjun Xi、Li Sheng、Yanmei Zhao、Ruoyu He、Xiaobei Hu、Yidan Shao、Xuwang Pan、Shourong Liu、Weiwei Huang、Yubo Zhou、Jia Li、Jiankang Zhang
DOI:10.1016/j.ejmech.2016.12.034
日期:2017.1
A series of novel piperazine or piperidine-containing non-covalent peptidyl derivatives possessing a neopentyl-asparagine residue were designed, synthesized and evaluated as proteasome inhibitors. All target compounds were screened for their 20S proteasome chymotrypsin-like inhibitory activities, and 15 ones displayed more potent activities than carfilzomib with IC50 values lower than 10 nM. Subsequently
设计,合成和评价了一系列具有新戊基-天冬酰胺残基的新的哌嗪或含哌啶的非共价肽基衍生物,并评价它们为蛋白酶体抑制剂。筛选了所有目标化合物的20S蛋白酶体胰凝乳蛋白酶样抑制活性,其中15种化合物比卡非佐米具有更强的活性,IC 50值低于10 nM。随后,测试了最有效的10种类似物对两种多发性骨髓瘤(MM)细胞系RPMI-8226和MM-1S的细胞毒活性。基于这些实验,进一步评估了所选衍生物的离体和体内血细胞蛋白酶体抑制活性。最有潜力的化合物35(蛋白酶体抑制IC 50:1.2±0.1 nM),具有有效的抗增殖作用(IC 50:RPMI-8226 8.4±0.8 nM; MM-1S:6.3±0.8 nM),离体和体内活性也具有延长的半衰期在血浆中的抗性,这表明通过在肽骨架中构建六元环可提高该系列化合物的酶稳定性。所有的实验都证实了设计概念的正确性,这使得该系列化合物成为探索新的抗MM药物的潜在线索。