Gossypol broadly inhibits coronaviruses by targeting RNA-dependent RNA polymerases

作者：棉花生物学国家重点实验室 日期：2023-01-17 访问量：

Wenjing Wang, Wenkang Li, Zhiyuan Wen, Chong Wang, Weilong Liu, Yufang Zhang, Juncheng Liu, Tianze Ding, Lei Shuai, Gongxun Zhong, Zhigao Bu, Lingbo Qu, Maozhi Ren, Fuguang Li

Advanced Science

doi:10.1002/advs.202203499

Abstract:

Outbreaks of coronaviruses (CoVs), especially severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), have posed serious threats to humans and animals, which urgently calls for effective broad-spectrum antivirals. RNA-dependent RNA polymerase (RdRp) plays an essential role in viral RNA synthesis and is an ideal pan-coronaviral therapeutic target. Herein, based on cryo-electron microscopy and biochemical approaches, gossypol (GOS) is identified from 881 natural products to directly block SARS-CoV-2 RdRp, thus inhibiting SARS-CoV-2 replication in both cellular and mouse infection models. GOS also acts as a potent inhibitor against the SARS-CoV-2 variant of concern (VOC) and exerts same inhibitory effects toward mutated RdRps of VOCs as the RdRp of the original SARS-CoV-2. Moreover, that the RdRp inhibitor GOS has broad-spectrum anti-coronavirus activity against alphacoronaviruses (porcine epidemic diarrhea virus and swine acute diarrhea syndrome coronavirus), betacoronaviruses (SARS-CoV-2), gammacoronaviruses (avian infectious bronchitis virus), and deltacoronaviruses (porcine deltacoronavirus) is showed. The findings demonstrate that GOS may serve as a promising lead compound for combating the ongoing COVID-19 pandemic and other coronavirus outbreaks.