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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Enzyme+Inhib+Med+Chem 2021 ; 36 (1): 497-503 Nephropedia Template TP
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Scutellaria baicalensis extract and baicalein inhibit replication of SARS-CoV-2 and its 3C-like protease in vitro #MMPMID33491508
Liu H; Ye F; Sun Q; Liang H; Li C; Li S; Lu R; Huang B; Tan W; Lai L
J Enzyme Inhib Med Chem 2021[Dec]; 36 (1): 497-503 PMID33491508show ga
COVID-19 has become a global pandemic and there is an urgent call for developing drugs against the virus (SARS-CoV-2). The 3C-like protease (3CL(pro)) of SARS-CoV-2 is a preferred target for broad spectrum anti-coronavirus drug discovery. We studied the anti-SARS-CoV-2 activity of S. baicalensis and its ingredients. We found that the ethanol extract of S. baicalensis and its major component, baicalein, inhibit SARS-CoV-2 3CL(pro) activity in vitro with IC(50)'s of 8.52 microg/ml and 0.39 microM, respectively. Both of them inhibit the replication of SARS-CoV-2 in Vero cells with EC(50)'s of 0.74 microg/ml and 2.9 microM, respectively. While baicalein is mainly active at the viral post-entry stage, the ethanol extract also inhibits viral entry. We further identified four baicalein analogues from other herbs that inhibit SARS-CoV-2 3CL(pro) activity at microM concentration. All the active compounds and the S. baicalensis extract also inhibit the SARS-CoV 3CL(pro), demonstrating their potential as broad-spectrum anti-coronavirus drugs.