对SARS-CoV-2蛋白酶抑制剂进行查,合成和生物化学表征
Martynas Bagdonas1, Kamilė Čerepenkaitė1, Aurelija Mickevičiūtė1
1Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio 7, LT-10257 Vilnius, Lithuania.
International journal of molecular sciences
|September 9, 2023
概括
研究人员选了1300种化合物,以找到SARS-CoV-2蛋白酶的抑制剂. 他们确定了与帕帕因类蛋白酶 (PLpro) 结合的二硫化物化合物,显示了COVID-19药物开发的潜力.
科学领域:
- 生物化学 生物化学
- 药物发现 药物发现 药物发现
- 病毒学 病毒学
背景情况:
- 导致严重急性呼吸综合征的冠状病毒2 (SARS-CoV-2) 蛋白酶,帕帕因类蛋白酶 (PLpro) 和主要蛋白酶 (Mpro) 对于病毒复制至关重要.
- 这些蛋白酶是针对COVID-19开发抗病毒疗法的重要目标.
研究的目的:
- 为了确定SARS-CoV-2 PLpro和Mpro.的新型抑制剂.
- 为了发现可以优化成潜在的抗COVID-19药物的小分子.
主要方法:
- 使用光热转移试验 (FTSA) 对1300种化合物的选.
- 使用酶抑制试验确定化合物解离常数 (Kd).
- 使用质谱学确认共价结合.
主要成果:
- 确定了53种化合物,这些化合物会改变PLpro的热稳定性.
- 醇衍生物和对称二硫化物化合物是主要的打击类.
- 七种芳香二硫化物化合物显示出有效的PLpro抑制 (微分子Kd范围).
- 两种二硫化物与Mpro.pro相比,对PLpro (Kd = 0.5μM) 的有效性是六倍的.
- 证实二硫化物衍生物能对两种蛋白酶进行共价结合.
结论:
- 芳香性二硫化物化合物是SARS-CoV-2 PLpro.的有效抑制剂.
- 这些已识别的化合物作为开发新的抗COVID-19治疗方法的有希望的结构.
相关概念视频
Conjugated Proteins
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Coronavirus
Coronaviruses, including the severe acute respiratory syndrome coronavirus (SARS-CoV), are enveloped viruses characterized by their single-stranded, positive-sense RNA genome and helical nucleocapsid structure. The hallmark of these viruses is their club-shaped spike (S) glycoproteins that protrude from the viral envelope, facilitating attachment to host cells. Typically, coronaviruses infect the upper respiratory tract, often causing mild or asymptomatic disease. However, certain strains like...


