Punicalagin as an allosteric NSP13 helicase inhibitor potently suppresses SARS-CoV-2 replication in vitro.
Punicalagin as an allosteric NSP13 helicase inhibitor potently suppresses SARS-CoV-2 replication in vitro.
复制标题
DOI:
10.1016/j.antiviral.2022.105389
复制
发表时间:
2022-10
影响因子:
7.6
通讯作者:
中科院分区:
文献类型:
--
作者:
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) helicase NSP13 plays a conserved role in the replication of coronaviruses and has been identified as an ideal target for the development of antiviral drugs against SARS-CoV-2. Here, we identify a novel NSP13 helicase inhibitor punicalagin (PUG) through high-throughput screening. Surface plasmon resonance (SPR)-based analysis and molecular docking calculation reveal that PUG directly binds NSP13 on the interface of domains 1A and 2A, with a KD value of 21.6 nM. Further biochemical and structural analyses suggest that PUG inhibits NSP13 on ATP hydrolysis and prevents it binding to DNA substrates. Finally, the antiviral studies show that PUG effectively suppresses the SARS-CoV-2 replication in A549-ACE2 and Vero cells, with EC50 values of 347 nM and 196 nM, respectively. Our work demonstrates the potential application of PUG in the treatment of coronavirus disease 2019 (COVID-19) and identifies an allosteric inhibition mechanism for future drug design targeting the viral helicases.
登录
查看更多内容
影响因子:
7.6
作者:
Du R;Cooper L;Chen Z;Lee H;Rong L;Cui Q
通讯作者:
Cui Q
影响因子:
13.2
作者:
Chan, Jasper Fuk-Woo;Kok, Kin-Hang;Yuen, Kwok-Yung
通讯作者:
Yuen, Kwok-Yung
影响因子:
168.9
作者:
Huang, Chaolin;Wang, Yeming;Cao, Bin
通讯作者:
Cao, Bin
影响因子:
168.9
作者:
Chan, Jasper Fuk-Woo;Yuan, Shuofeng;Yuen, Kwok-Yung
通讯作者:
Yuen, Kwok-Yung
影响因子:
4.5
作者:
Huang M;Wu K;Zeng S;Liu W;Cui T;Chen Z;Lin L;Chen D;Ouyang H
通讯作者:
Ouyang H