Article Publish Status: FREE
Abstract Title:

Andrographolide and its fluorescent derivative inhibit the main proteases of 2019-nCoV and SARS-CoV through covalent linkage.

Abstract Source:

Biochem Biophys Res Commun. 2020 Dec 10 ;533(3):467-473. Epub 2020 Aug 25. PMID: 32977949

Abstract Author(s):

Tzu-Hau Shi, Yi-Long Huang, Chiao-Che Chen, Wen-Chieh Pi, Yu-Ling Hsu, Lee-Chiang Lo, Wei-Yi Chen, Shu-Ling Fu, Chao-Hsiung Lin

Article Affiliation:

Tzu-Hau Shi


The coronavirus disease 2019 (COVID-19) pandemic caused by 2019 novel coronavirus (2019-nCoV) has been a crisis of global health, whereas the effective vaccines against 2019-nCoV are still under development. Alternatively, utilization of old drugs or available medicine that can suppress the viral activity or replication may provide an urgent solution to suppress the rapid spread of 2019-nCoV. Andrographolide is a highly abundant natural product of the medicinal plant, Andrographis paniculata, which has been clinically used for inflammatory diseases and anti-viral therapy. We herein demonstrate that both andrographolide and its fluorescent derivative, the nitrobenzoxadiazole-conjugated andrographolide (Andro- NBD), suppressed the main protease (M) activities of 2019-nCoV and severe acute respiratory syndrome coronavirus (SARS-CoV). Moreover, Andro-NBD was shown to covalently link its fluorescence to these proteases. Further mass spectrometry (MS) analysis suggests that andrographolide formed a covalent bond with the active site Cysof either 2019-nCoV Mor SARS-CoV M. Consistently, molecular modeling analysis supported the docking of andrographolide within the catalytic pockets of both viral Ms. Considering that andrographolide is used in clinical practice with acceptable safety and its diverse pharmacological activities that could be beneficial for attenuating COVID-19 symptoms, extensive investigation of andrographolide on the suppression of 2019-nCoV as well as its application in COVID-19 therapy is suggested.

Study Type : In Vitro Study

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