摘要
干扰素模拟基因15 (ISG15)属于泛素样蛋白家族。ISG15作为细胞因子,通过ISGylation作用修饰蛋白质。这种翻译后修饰与抗病毒和免疫应答途径有关。此外,据了解,严重急性呼吸综合征冠状病毒2(SARS-CoV-2)的基因组编码对病毒复制至关重要的蛋白酶。因此,这些蛋白酶在2019年冠状病毒病(COVID-19)的进展中也起着关键作用。有趣的是,蛋白酶SARS-CoV-2-PLpro从ISGylated蛋白(如IRF3和MDA5)中去除ISG15,影响宿主的免疫和抗病毒防御。本文就ISG15、ISGylation和生成SARS-CoV-2- plpro抑制剂在SARS-CoV-2感染中的意义进行了讨论。
关键词: COVID-19, SARS-CoV-2, SCoV-PLpro, ISG15, ISGylation,蛋白酶。
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