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Nature - Science Journal am 15.03.2021 23:00:00

Clofazimine broadly inhibits coronaviruses including SARS-CoV-2

Zusammenfassung: ... COVID-19 pandemic is the third zoonotic coronavirus (CoV) outbreak of the century after severe acute respiratory syndrome (SARS) in 20031 and Middle East respiratory syndrome (MERS) since 20122. Treatment options for CoVs are largely lacking. Here we show that clofazimine, an anti-leprosy drug with a favourable safety profile3, possesses pan-coronaviral inhibitory activity, and can antagonize SARS-CoV-2 and MERS-CoV replication in multiple in vitro systems. The FDA-approved molecule was found to inhibit viral spike-mediated cell fusion and viral helicase activity. In a hamster model of SARS-CoV-2 pathogenesis, prophylactic or therapeutic administration of clofazimine significantly reduced viral load in the lung and faecal viral shedding, and also mitigated inflammation associated with viral infection. Combinatorial application of clofazimine and remdesivir exhibited antiviral synergy in vitro and in vivo, and restricted upper respiratory tract viral shedding. Since clofazimine is orally bioavailable and has a comparatively low manufacturing cost, it is an attractive clinical candidate for outpatient treatment and remdesivir-based combinatorial therapy for hospitalized COVID-19 patients, particularly in developing countries. Taken together, our data provide evidence that clofazimine may have a role in the control of the current pandemic SARS-CoV-2, and, possibly most importantly, emerging CoVs of the future. ...

Schlagwörter: Administrative, University-The, Pharmaceutical, Kong-Shenzhen, Biotechnology

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Link zum Artikel bei Nature - Science Journal: Clofazimine broadly inhibits coronaviruses including SARS-CoV-2