血管紧张素转化酶2
巴戟天属
酶
穗蛋白
化学
2019年冠状病毒病(COVID-19)
生物化学
医学
内科学
传统医学
传染病(医学专业)
疾病
作者
Brett J. West,Shixin Deng
出处
期刊:Journal of Biosciences and Medicines
日期:2021-01-01
卷期号:09 (11): 42-51
被引量:4
标识
DOI:10.4236/jbm.2021.911005
摘要
COVID-19 is a global pandemic that has claimed millions of lives. This disease is caused by a coronavirus, SARS-CoV-2, which requires the binding of its spike protein to angiotensin-converting enzyme 2 (ACE2) for infection of the host cell. Morinda citrifolia (noni) fruit juice has antiviral activity that involves enhancement of immune system function. SARS-CoV-2 spike-ACE2 interaction experiments were carried out to further investigate the antiviral properties of noni juice and its major iridoids. Noni juice inhibited binding by approximately 69%. Scandoside was the most active of the three iridoids evaluated, reducing average spike protein-ACE2 interaction by 79.25%. The iridoids worked synergistically towards inhibiting spike protein binding when assayed together, improving activity by more than 22% above the expected level. But the modest activity of the most abundant iridoid, deacetylasperulosidic acid, indicates that other phytochemicals (i.e. scopoletin, quercetin, rutin and kaempferol) are also involved. Our results suggest that the presence of several biological active phytochemicals in noni juice enhances resistance to SARS-CoV-2 by interfering with its ability to bind ACE2. This is a new and significant anti-viral mechanism of noni juice that does not directly involve its immunomodulatory properties.
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