存活的BCL-2蛋白对于药物化学家而言是有吸引力的但具有挑战性的靶标。它们参与了许多(如果不是全部)肿瘤的发生和发展,使其成为开发新的抗癌疗法的主要靶标。我们介绍了基于从头结构的药物设计方法。利用来自参与BCL-2蛋白质家族相对成员的复合物的已知结构信息,我们使用苯甲酰脲支架设计了拟肽化合物,以再现这些蛋白质之间的关键相互作用。从初始从头词干的文库设计的支架导致与低微摩尔效力(配位体的发现ķ d = 4μM)和选择性BCL-X大号。这些化合物以不同于先前已知的BCL-2抑制剂的结合方式在规范的BH3结合槽中结合。我们的研究结果为针对具有挑战性的蛋白质-蛋白质相互作用类的新型拮抗剂的设计提供了见识。
4-Aminoquinolines: Novel Nociceptin Antagonists with Analgesic Activity
摘要:
Small-molecule nociceptin antagonists were synthesized to examine their therapeutic potential. After a 4-aminoquinoline derivative was found to bind with the human ORL1 receptor, a series of 4-aminoquinolines and related compounds were synthesized and their binding was evaluated. Elucidation of structure-activity relationships eventually led to the optimum compounds. One of the se compounds, N-(4-amino-2-methylquinolin-6-yl) -2-(4-ethylphenoxymethyl)benzamide hydrochloride (11) not only antagonized nociceptin-induced allodynia in mice but also showed analgesic effect in a hot plate test using mice and in a formalin test using rats. Its analgesic effect was not antagonized by the opioid antagonist naloxone. These results indicate that this nociceptin antagonist has the potential to become a novel type of analgesic that differs from mu -opioid agonists.