Journal: Biochemical and Biophysical Research Communications
Article Title: Highly polymerized proanthocyanidins (PAC) components from blueberry leaf and stem significantly inhibit SARS-CoV-2 infection via inhibition of ACE2 and viral 3CLpro enzymes
doi: 10.1016/j.bbrc.2022.04.072
Figure Lengend Snippet: Inhibitory activity of ACE2, BSS, and virus-derived 3CL protease enzymes by BB-PAC. A. ACE2 enzyme activity by BB-PAC fractions of Fr1(dotted line) as a control and Fr7 (solid line) at several different concentrations was measured by the ACE2 activity assay kit (BPS Bioscience). The right figure shows the results using the blueberry leaf fraction and the left figure shows the results using the blueberry stem fraction. B. TMPRSS2 enzyme activity by BB-PAC fractions of Fr1(dotted line) as a control and Fr7 (solid line) at several different concentrations was measured by the TMPRSS2 activity assay kit (BPS Bioscience). C. 3CLpro enzyme activity by BB-PAC fractions of Fr1(dotted line) as a control and Fr7 (solid line) at several different concentrations was measured by the 3CLpro activity assay kit (BPS Bioscience).
Article Snippet: C. 3CLpro enzyme activity by BB-PAC fractions of Fr1(dotted line) as a control and Fr7 (solid line) at several different concentrations was measured by the 3CLpro activity assay kit (BPS Bioscience).
Techniques: Activity Assay, Derivative Assay