Biaryl Amides and Hydrazones as Therapeutics for Prion Disease in Transgenic Mice
摘要:
唯一被证实能大幅延长朊病毒感染小鼠存活时间的小分子化合物是一种双芳基腙,称为 "Compd B"(4-吡啶甲醛,2-[4-(5-恶唑基)苯基]腙)。然而,Compd B 的腙分子会产生有毒的代谢物,因此不适合进一步开发药物。我们根据高通量筛选出的多种抗磷脂化合物建立了一个药理模型;在此基础上,我们生成了康普迪 B 的双芳基酰胺类似物。通过药物化学优化,多个化合物的药效增强、脑浓度提高、代谢稳定性提高,表明它们有望成为抗磷脂治疗的候选药物。将 Compd B 的吡啶环替换为含有电子供能取代基的苯基可提高药效,而在噁唑分子上添加芳基可提高代谢稳定性。为了测试 Compd B 的功效,我们应用了生物发光成像(BLI)技术,该技术以前曾被证明能比临床症状更早地检测到活体小鼠朊病毒病的发病。在我们的研究中,Compd B 在感染了小鼠适应的洛基山实验室(Rocky Mountain Laboratory,RML)朊病毒株的两系转基因小鼠中表现出良好的疗效,但在感染了人类朊病毒的转基因小鼠中却没有表现出良好的疗效。早在观察到存活期延长之前,BLI 系统就成功预测了所有病例的疗效。我们的研究表明,BLI 系统在未来的抗朊病毒药物疗效研究中具有良好的应用潜力。
ARYL HYDROCARBON RECEPTOR ANTAGONISTS AND METHODS OF USE
申请人:Magenta Therapeutics Inc.
公开号:US20210220408A1
公开(公告)日:2021-07-22
The disclosure relates to aryl hydrocarbon receptor antagonists as well as methods of modulating aryl hydrocarbon receptor activity and expanding hematopoietic stem cells by culturing hematopoietic stem or progenitor cells in the presence of these agents. Additionally, the disclosure provides methods of treating various pathologies, such as cancer, by administration of these aryl hydrocarbon receptor antagonists. Additionally, the disclosure provides methods of treating various pathologies in a patient by administration of expanded hematopoietic stem cells. The disclosure further provides kits containing aryl hydrocarbon receptor antagonists that can be used for the expansion of hematopoietic stem cells. The disclosure further relates to pharmaceutical compositions comprising the compounds and methods of treating or preventing a disease in which aryl hydrocarbon receptor plays a role.