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Gowda, Pruthvi and Patrick, Shruti and Joshi, Shanker Datt and Kumawat, Rajesh Kumar and Sen, Ellora (2021) Glycyrrhizin Prevents Sars-Cov-2 S1 and Orf3a Induced High Mobility Group Box 1 (Hmgb1) Release and Inhibits Viral Replication. Cytokine, 142 (155496).

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Efforts to understand host factors critical for COVID-19 pathogenesis have identified high mobility group box 1 (HMGB1) to be crucial for regulating susceptibility to SARS-CoV-2. COVID-19 disease severity is correlated with heightened inflammatory responses, and HMGB1 is an important extracellular mediator in inflammation pro-cesses. In this study, we evaluated the effect of HMGB1 inhibitor Glycyrrhizin on the cellular perturbations in lung cells expressing SARS-CoV-2 viral proteins. Pyroptosis in lung cells transfected with SARS-CoV-2 S-RBD and Orf3a, was accompanied by elevation of IL-1β and extracellular HMGB1 levels. Glycyrrhizin mitigated viral proteins-induced lung cell pyroptosis and activation of macrophages. Heightened release of proinflammatory cytokines IL-1β, IL-6 and IL-8, as well as ferritin from macrophages cultured in conditioned media from lung cells expressing SARS-CoV-2 S-RBD and Orf3a was attenuated by glycyrrhizin. Importantly, Glycyrrhizin inhibited SARS-CoV-2 replication in Vero E6 cells without exhibiting cytotoxicity at high doses. The dual ability of Gly-cyrrhizin to concomitantly halt virus replication and dampen proinflammatory mediators might constitute a viable therapeutic option in patients with SARS-CoV-2 infection

Item Type: Article
Subjects: Neurodegenerative Disorders
Neuro-Oncological Disorders
Neurocognitive Processes
Neuronal Development and Regeneration
Informatics and Imaging
Genetics and Molecular Biology
Depositing User: Dr. D.D. Lal
Date Deposited: 06 Aug 2021 05:17
Last Modified: 13 Dec 2021 07:10
URI: http://nbrc.sciencecentral.in/id/eprint/755

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