Screening for inhibitors against SARS-CoV-2 and its variants  

作　　者：Weijing Yuan Xiaojing Dong Lan Chen Xiaobo Lei Zhuo Zhou Li Guo Jianwei Wang 

机构地区：[1]Institute of Pathogenic Biology,Peking Union Medical College,Chinese Academy of Medical Sciences,Beijing 100730,China [2]School of Life Science,Peking University,Beijing 100871,China [3]Biomedical Pioneering Innovation Center,Peking University,Beijing 100871,China

出　　处：《Biosafety and Health》2022年第3期186-192,共7页生物安全与健康（英文）

基　　金：supported by grants from National Key R&D Program of China(2020YFA0707600 to Z.Z.and X.L.);the National Natural Science Foundation of China(81930063 and 81971948 to J.W.and X.L.);hinese Academy of Medical Science(CAMS)Innovation Fund for Medical Sciences(2021-I2M-1-038 to J.W.)。

摘　　要：Severe acute respiratory syndrome coronavirus 2(SARS‐CoV‐2)continues to evolve,generating new variants that pose a threat to global health;therefore,it is imperative to obtain safe and broad‐spectrum antivirals against SARS‐CoV‐2 and its variants.To this end,we screened compounds for their ability to inhibit viral entry,which is a critical step in virus infection.Twenty compounds that have been previously reported to inhibit SARS‐CoV‐2 replication were tested by using pseudoviruses containing the spike protein from the original strain(SARS‐CoV‐2‐WH01).The cytotoxicity of these compounds was determined.Furthermore,we identified six compounds with strong antagonistic activity against the WH01 pseudovirus,and low cytotoxicity was identified.These compounds were then evaluated for their efficacy against pseudoviruses expressing the spike protein from B.1.617.2(Delta)and B.1.1.529(Omicron),the two most prevalent circulating strains.These assays demonstrated that two phenothiazine compounds,trifluoperazine 2HCl and thioridazine HCl,inhibit the infection of Delta and Omicron pseudoviruses.Finally,we discovered that these two compounds were highly effective against authentic SARS‐CoV‐2 viruses,including the WH01,Delta,and Omicron strains.Our study identified potential broad‐spectrum SARS‐CoV‐2 inhibitors and provided insights into the development of novel therapeutics.

关 键 词：SARS‐CoV‐2 Delta variant Omicron variant Trifluoperazine 2HCl Thioridazine HCl Antiviral therapy 

分 类 号：R373[医药卫生—病原生物学]