Corilagin inhibits SARS-CoV-2 replication by targeting viral RNA-dependent RNA polymerase.

Corilagin inhibits SARS-CoV-2 replication by targeting viral RNA-dependent RNA polymerase.
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Corilagin 通过靶向病毒 RNA 依赖性 RNA 聚合酶抑制 SARS-CoV-2 复制

DOI:
10.1016/j.apsb.2021.02.011
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发表时间:
2021-06
期刊:
Acta pharmaceutica Sinica. B
影响因子:
--
通讯作者:
Cen S
Cen S
中科院分区:
其他
文献类型:
--
作者:
Li Q;Yi D;Lei X;Zhao J;Zhang Y;Cui X;Xiao X;Jiao T;Dong X;Zhao X;Zeng H;Liang C;Ren L;Guo F;Li X;Wang J;Cen S

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严重急性呼吸综合征冠状病毒2型(SARS-CoV-2)已成为人类健康的主要威胁之一。RNA依赖的RNA聚合酶(RdRp)是抗病毒药物的理想靶点,而核苷类似物抑制剂受到冠状病毒校对活性的阻碍。在此,我们报告corilagin(RAI-S-37)作为SARS-CoV-2 RdRp的非核苷抑制剂,直接与RdRp结合,在无细胞和基于细胞的测定中有效地抑制聚合酶活性,完全抵抗校正活性,并以0.13 μmol/L的低50%有效浓度(EC 50)有效地抑制SARS-CoV-2感染。计算模型预测,RAI-S-37降落在棕榈域的RdRp,并防止构象变化所需的核苷酸掺入RdRp。此外,RAI-S-37与Remdesivir的组合表现出对抗SARS-CoV-2 RdRp的相加活性。结合目前关于柯里拉京作为一种药用草药制剂的安全性和药代动力学的数据,这些结果证明了将其开发为急需的SARS-CoV-2治疗药物之一的潜力。我们报道了RAI-S-37(corilagin)作为SARS-CoV-2 RdRp的非核苷抑制剂,直接与RdRp结合,在无细胞和基于细胞的测定中有效地抑制聚合酶活性,完全抵抗校对活性,并在体外有效地抑制SARS-CoV-2感染。
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has become one major threat to human population health. The RNA-dependent RNA polymerase (RdRp) presents an ideal target of antivirals, whereas nucleoside analogs inhibitor is hindered by the proofreading activity of coronavirus. Herein, we report that corilagin (RAI-S-37) as a non-nucleoside inhibitor of SARS-CoV-2 RdRp, binds directly to RdRp, effectively inhibits the polymerase activity in both cell-free and cell-based assays, fully resists the proofreading activity and potently inhibits SARS-CoV-2 infection with a low 50% effective concentration (EC50) value of 0.13 μmol/L. Computation modeling predicts that RAI-S-37 lands at the palm domain of RdRp and prevents conformational changes required for nucleotide incorporation by RdRp. In addition, combination of RAI-S-37 with remdesivir exhibits additive activity against anti-SARS-CoV-2 RdRp. Together with the current data available on the safety and pharmacokinetics of corilagin as a medicinal herbal agent, these results demonstrate the potential of being developed into one of the much-needed SARS-CoV-2 therapeutics. We report that RAI-S-37 (corilagin) acts as a non-nucleoside inhibitor of SARS-CoV-2 RdRp, binds directly to RdRp, effectively inhibits the polymerase activity in both cell-free and cell-based assays, fully resists the proofreading activity and potently inhibits SARS-CoV-2 infection in vitro.
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