类相似物通过阻断甲素L的功能来作为有效的SARS-CoV-2抑制剂
Weilong Deng1, Xiao Hu1, Xiaoman Tian1
1State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, KLMDASR of Tianjin and Drug Discovery Center for Infectious Disease, Nankai University, Tianjin 300353, People's Republic of China.
Journal of medicinal chemistry
|September 18, 2024
概括
研究人员确定了针对卡塞普辛L (CatL) 的新型化合物,这是SARS-CoV-2进入的关键蛋白酶. 强大的D6-3抑制剂有效地阻止了病毒伪病毒的进入,为开发SARS-CoV-2抗病毒药物提供了新的途径.
科学领域:
- 病毒学 病毒学
- 药物发现 药物发现 药物发现
- 生物化学 生化学
背景情况:
- 严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 使用Cathepsin L (CatL) 作为一个关键的蛋白酶.
- CatL活动对于切割SARS-CoV-2尖端蛋白至关重要,促进病毒进入宿主细胞.
- 针对CatL是一个有前途的战略,用于开发针对SARS-CoV-2的新型抗病毒疗法.
研究的目的:
- 为了识别和开发针对SARS-CoV-2的抗病毒应用的Cathepsin L (CatL) 强效抑制剂.
- 研究新型CatL抑制剂的结构-活性关系.
- 为了评估化合物的有效性,阻止SARS-CoV-2伪病毒的进入.
主要方法:
- 使用蛋白酶查和蛋白质拉下测试来确认抑制剂与CatL.直接结合.
- 分子对接研究指导了72种模拟化合物的合成.
- 进行结构-活性关系 (SAR) 分析以优化抑制剂的效力.
主要成果:
- 一种三甲基,D1-1,被确定为细胞培养中SARS-CoV-2的初始抑制剂.
- 类似的D6系列显示出改善了CatL抑制活性.
- 化合物D6-3成为最强大的抑制剂,其IC50为0.27nM,EC50为0.26μM.
- D6-3有效抑制了CatL功能,并显著减少了SARS-CoV-2伪病毒进入细胞的数量.
结论:
- 新的甲素L抑制剂,特别是D6-3已经开发出来.
- 这些化合物显示出针对CatL的显著潜力,以对抗SARS-CoV-2感染.
- 这些发现为未来开发SARS-CoV-2抗病毒药物提供了宝贵的见解.
相关概念视频
01:30Enzyme Inhibition
78.1K
Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
78.1K
01:18Indirect-Acting Cholinergic Agonists: Mechanism of Action
1.8K
Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
1.8K