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2020 ; 25
(10
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Virtual Screening of Natural Products against Type II Transmembrane Serine
Protease (TMPRSS2), the Priming Agent of Coronavirus 2 (SARS-CoV-2)
#MMPMID32408547
Rahman N
; Basharat Z
; Yousuf M
; Castaldo G
; Rastrelli L
; Khan H
Molecules
2020[May]; 25
(10
): ä PMID32408547
show ga
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused about 2
million infections and is responsible for more than 100,000 deaths worldwide. To
date, there is no specific drug registered to combat the disease it causes, named
coronavirus disease 2019 (COVID-19). In the current study, we used an in silico
approach to screen natural compounds to find potent inhibitors of the host enzyme
transmembrane protease serine 2 (TMPRSS2). This enzyme facilitates viral particle
entry into host cells, and its inhibition blocks virus fusion with
angiotensin-converting enzyme 2 (ACE2). This, in turn, restricts SARS-CoV-2
pathogenesis. A three-dimensional structure of TMPRSS2 was built using
SWISS-MODEL and validated by RAMPAGE. The natural compounds library Natural
Product Activity and Species Source (NPASS), containing 30,927 compounds, was
screened against the target protein. Two techniques were used in the Molecular
Operating Environment (MOE) for this purpose, i.e., a ligand-based pharmacophore
approach and a molecular docking-based screening. In total, 2140 compounds with
pharmacophoric features were retained using the first approach. Using the second
approach, 85 compounds with molecular docking comparable to or greater than that
of the standard inhibitor (camostat mesylate) were identified. The top 12
compounds with the most favorable structural features were studied for
physicochemical and ADMET (absorption, distribution, metabolism, excretion,
toxicity) properties. The low-molecular-weight compound NPC306344 showed
significant interaction with the active site residues of TMPRSS2, with a binding
energy score of -14.69. Further in vitro and in vivo validation is needed to
study and develop an anti-COVID-19 drug based on the structures of the most
promising compounds identified in this study.