作者:Xuemei Li、Duidui Hong、Mengmeng Zhang、Lei Xu、Yubo Zhou、Jia Li、Tao Liu
DOI:10.1016/j.ejmech.2021.113556
日期:2021.10
crucial for β5i selectivity over β5c. Notably, compounds 20j (β5i IC50 = 26.0 nM, 25-fold selectivity) and 20l (β5i IC50 = 25.1 nM, 24-fold selectivity) with the D-configuration at P3 were the most selective inhibitors. Although 20j and 20l showed only moderate anti-proliferative activity against RPMI-8226 and MM.1S cell lines, based on our experiments, it indicates that the inhibition of β5i alone is
设计、合成和评估了一系列具有不同N帽和 P3 构型的环氧酮类似物。我们发现P3中的D -Ala 对于β 5i 选择性超过β 5c至关重要。值得注意的是,在 P3 具有D-构型的化合物20j(β 5i IC 50 = 26.0 nM,25 倍选择性)和20l(β 5i IC 50 = 25.1 nM,24 倍选择性)是最具选择性的抑制剂。虽然20j和20l仅对 RPMI-8226 和 MM.1S 细胞系显示出中等的抗增殖活性,根据我们的实验,这表明单独抑制β 5i 不足以发挥抗癌作用,可能依赖于β 1i的互补抑制,β 5c 和β 5i。这些数据进一步增加了我们对血液系统恶性肿瘤中免疫蛋白酶体抑制剂的理解。