Epigallocatechin gallate (EGCG) attenuates severe acute respiratory coronavirus disease 2 (SARS-CoV-2) infection by blocking the interaction of SARS-CoV-2 spike protein receptor-binding domain to human angiotensin-converting enzyme 2

The outbreak of the coronavirus disease 2019 caused by the severe acute respiratory syndrome coronavirus 2 triggered a global pandemic where control is needed through therapeutic and preventive interventions. This study aims to identify natural compounds that could affect the fusion between the vira...

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Bibliographic Details
Published in:PloS one 2022-07, Vol.17 (7), p.e0271112-e0271112
Main Authors: Ohishi, Tomokazu, Hishiki, Takayuki, Baig, Mirza S., Rajpoot, Sajjan, Saqib, Uzma, Takasaki, Tomohiko, Hara, Yukihiko
Format: Article
Language:English
Subjects:
ACE2
Angiotensin
Angiotensin-converting enzyme 2
Binding
Biology and life sciences
Clinical trials
Conversion
Coronaviruses
COVID-19
Disease transmission
Enzyme-linked immunosorbent assay
Enzymes
Epidemics
Epidemiology
Epigallocatechin gallate
Fruits
Gene expression
Genomes
Green tea
Hydrogen
Hydrogen bonds
Infections
Medicine and health sciences
Membrane fusion
Molecular docking
Pandemics
Peptidyl-dipeptidase A
Physical Sciences
Phytochemicals
Proteins
Receptors
Research and Analysis Methods
Respiratory diseases
Severe acute respiratory syndrome
Severe acute respiratory syndrome coronavirus 2
Spike protein
Tea
Viral diseases
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Summary:The outbreak of the coronavirus disease 2019 caused by the severe acute respiratory syndrome coronavirus 2 triggered a global pandemic where control is needed through therapeutic and preventive interventions. This study aims to identify natural compounds that could affect the fusion between the viral membrane (receptor-binding domain of the severe acute respiratory syndrome coronavirus 2 spike protein) and the human cell receptor angiotensin-converting enzyme 2. Accordingly, we performed the enzyme-linked immunosorbent assay-based screening of 10 phytochemicals that already showed numerous positive effects on human health in several epidemiological studies and clinical trials. Among these phytochemicals, epigallocatechin gallate, a polyphenol and a major component of green tea, could effectively inhibit the interaction between the receptor-binding domain of the severe acute respiratory syndrome coronavirus 2 spike protein and the human cell receptor angiotensin-converting enzyme 2. Alternately, in silico molecular docking studies of epigallocatechin gallate and angiotensin-converting enzyme 2 indicated a binding score of −7.8 kcal/mol and identified a hydrogen bond between R393 and angiotensin-converting enzyme 2, which is considered as a key interacting residue involved in binding with the severe acute respiratory syndrome coronavirus 2 spike protein receptor-binding domain, suggesting the possible blocking of interaction between receptor-binding domain and angiotensin-converting enzyme 2. Furthermore, epigallocatechin gallate could attenuate severe acute respiratory syndrome coronavirus 2 infection and replication in Caco-2 cells. These results shed insight into identification and validation of severe acute respiratory syndrome coronavirus 2 entry inhibitors.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0271112