myeloma and mantle cell lymphoma. Proteasome inhibitors that selectively target combinations of β1c/β1i, β2c/β2i, or β5c/β5i are available, yet ligands truly selective for a single proteasome activity are scarce. In this work we report the development of cell-permeable β1i and β5i selective inhibitors that outperform existing leads in terms of selectivity and/or potency. These compounds are the result
哺乳动物
基因组编码7个催化
蛋白酶体亚基,分别是β1c,β2c,β5c(组装成20S组成的
蛋白酶体核心颗粒),β1i,β2i,β5i(并入免疫
蛋白酶体)和胸腺
蛋白酶体特异性亚基β5t。在过去的几十年中,广泛的研究产生了许多有效的
蛋白酶体
抑制剂,包括目前临床上用于治疗多发性骨髓瘤和套细胞淋巴瘤的化合物。有选择性靶向β1c/β1i,β2c/β2i或β5c/β5i组合的
蛋白酶体
抑制剂,但对于单个
蛋白酶体活性真正选择性的
配体却很少。在这项工作中,我们报道了在选择性和/或效能方面优于现有
铅的细胞可渗透性β1i和β5i选择性
抑制剂的开发。