新型和高度选择性的SARS-CoV-2主要蛋白酶抑制剂的设计
Adi N R Poli1, Ian Tietjen2, Nitesh K Nandwana1
1Medicinal Chemistry, The Wistar Institute, Philadelphia, Pennsylvania, USA.
Antimicrobial agents and chemotherapy
|September 3, 2024
概括
一种针对SARS-CoV-2主要蛋白酶 (Mpro) 的新型仿抑制剂显示出对多种变异的强有力的抗病毒活性. 这种Mpro抑制剂在子中表现出体内有效性,并与remdesivir协同作用,为抗药性SARS-CoV-2提供了一个有前途的策略.
科学领域:
- 药用化学 医学化学
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
背景情况:
- 严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 主蛋白酶 (Mpro) 是复制必需的关键病毒酶.
- 开发选择性Mpro抑制剂对于对抗SARS-CoV-2和潜在的未来冠状病毒威胁至关重要.
- 现有的抑制剂可能会面临药物耐药性和非向效应的挑战.
研究的目的:
- 合成和表征一种新型,高度选择性的SARS-CoV-2模仿抑制剂Mpro.
- 在体外和体内评估抑制剂对SARS-CoV-2变异的疗效.
- 评估与现有的抗病毒药物 (如remdesivir) 协同作用的潜力.
主要方法:
- 合成一个受约束的循环仿真与一个针对Mpro的活性部位Cys145.5的乙烯基甲基弹头.
- 生物化学分析以确定Mpro抑制 (IC50) 和对宿主蛋白酶的选择性.
- 使用SARS-CoV-2变种的体外复制试验和与remdesivir的组合研究.
- 在Sars-CoV-2 Omicron感染的叙利亚黄金仓鼠模型中的体内疗效研究.
主要成果:
- 一种原型化合物 (化合物1) 显示出强大的Mpro抑制 (IC50=230±18nM) 和对宿主甲蛋白酶的高选择性.
- 化合物1在体外有效抑制了多种SARS-CoV-2变异的复制.
- 当化合物1与低度的雷梅西维尔联合使用时,观察到协同抗病毒活性.
- 在体内研究表明,在没有明显的毒性的情况下,在子中减少了SARS-CoV-2 Omicron复制.
结论:
- 这种新型的仿抑制剂选择性地向SARS-CoV-2 Mpro,并表现出强大的抗病毒活性.
- 这种抑制剂在体内表现出有效性和协同潜力,代表了一个有前途的治疗.
- 该战略为开发抗抗药性SARS-CoV-2的药物提供了基础,并减少了目标外影响.
- 准保存的Mpro活性部位为耐药性提供了高的遗传障碍,并改善了安全性.
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