in mice, rat and human microsomes than marketed carfilzomib. The in vivo activities of this compound were evaluated with the xenograft mice models of MM cell lines ARH77 and RPMI-8226 with luciferase expression and the T/C value of the two models were 49.5% and 37.6%, respectively. To evaluate the potential cardiovascular toxicity, inhibition of hERG ion channel in HEK293 cells by compound 36 and carfilzomib
设计并合成了一系列新型的20S
蛋白酶体四肽基环氧酮
抑制剂。为了充分理解
SAR,设计,合成和
生物分析了R 1,R 2,R 3,R 4和R 5位置的各种基团,包括芳族和脂族取代基。基于酶促结果,选择了7种化合物来评估其细胞活性,可溶性化合物36对人多发性骨髓瘤(MM)
细胞系显示出强大的功效。微粒体稳定性结果表明化合物36与市售的
卡非佐米相比,它在小鼠,大鼠和人的微粒体中更稳定。用具有
荧光素酶表达的MM
细胞系ARH77和RPMI-8226的异种移植小鼠模型评价该化合物的体内活性,两个模型的T / C值分别为49.5%和37.6%。为了评估潜在的心血管毒性,化合物36和
卡非佐米对HEK293细胞中的hERG离子通道进行了抑制。结果表明36对hERG离子通道没有结合亲和力,而
卡非佐米可以与92.1μM的IC 50结合。