Novel Drugs Targeting the SARS-CoV-2/COVID-19 Machinery

2020 ◽  
Vol 20 (16) ◽  
pp. 1423-1433 ◽  
Author(s):  
Ariane Sternberg ◽  
Dwight L. McKee ◽  
Cord Naujokat
Keyword(s):  
Host Cell ◽  
Protein Processing ◽  
Cell Entry ◽  
Genome Replication ◽  
Rna Dependent Rna Polymerase ◽  
Main Protease ◽  
Novel Drugs ◽  
Pathogenic Viruses ◽  
Repurposed Drugs ◽  
Host Cell Entry

Like other human pathogenic viruses, coronavirus SARS-CoV-2 employs sophisticated macromolecular machines for viral host cell entry, genome replication and protein processing. Such machinery encompasses SARS-CoV-2 envelope spike (S) glycoprotein required for host cell entry by binding to the ACE2 receptor, viral RNA-dependent RNA polymerase (RdRp) and 3-chymotrypsin-like main protease (3Clpro/Mpro). Under the pressure of the accelerating COVID-19 pandemic caused by the outbreak of SARS-CoV-2 in Wuhan, China in December 2019, novel and repurposed drugs were recently designed and identified for targeting the SARS-CoV-2 reproduction machinery, with the aim to limit the spread of SARS-CoV-2 and morbidity and mortality due to the COVID-19 pandemic.

scholarly journals Essential Oils as Antiviral Agents, Potential of Essential Oils to Treat SARS-CoV-2 Infection: An In-Silico Investigation

2020 ◽  
Vol 21 (10) ◽  
pp. 3426 ◽  
Author(s):  
Joyce Kelly R. da Silva ◽  
Pablo Luis Baia Figueiredo ◽  
Kendall G. Byler ◽  
William N. Setzer
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Antiviral Agents ◽  
Rna Dependent Rna Polymerase ◽  
Protein Targets ◽  
Docking Analysis ◽  
Main Protease ◽  
Pathogenic Viruses ◽  
Oil Components ◽  
Molecular Docking Analysis

Essential oils have shown promise as antiviral agents against several pathogenic viruses. In this work we hypothesized that essential oil components may interact with key protein targets of the 2019 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A molecular docking analysis was carried out using 171 essential oil components with SARS-CoV-2 main protease (SARS-CoV-2 Mpro), SARS-CoV-2 endoribonucleoase (SARS-CoV-2 Nsp15/NendoU), SARS-CoV-2 ADP-ribose-1″-phosphatase (SARS-CoV-2 ADRP), SARS-CoV-2 RNA-dependent RNA polymerase (SARS-CoV-2 RdRp), the binding domain of the SARS-CoV-2 spike protein (SARS-CoV-2 rS), and human angiotensin−converting enzyme (hACE2). The compound with the best normalized docking score to SARS-CoV-2 Mpro was the sesquiterpene hydrocarbon (E)-β-farnesene. The best docking ligands for SARS−CoV Nsp15/NendoU were (E,E)-α-farnesene, (E)-β-farnesene, and (E,E)−farnesol. (E,E)−Farnesol showed the most exothermic docking to SARS-CoV-2 ADRP. Unfortunately, the docking energies of (E,E)−α-farnesene, (E)-β-farnesene, and (E,E)−farnesol with SARS-CoV-2 targets were relatively weak compared to docking energies with other proteins and are, therefore, unlikely to interact with the virus targets. However, essential oil components may act synergistically, essential oils may potentiate other antiviral agents, or they may provide some relief of COVID-19 symptoms.

scholarly journals A structure-based rationale for sialic acid independent host-cell entry of Sosuga virus

2019 ◽  
Vol 116 (43) ◽  
pp. 21514-21520 ◽  
Author(s):  
Alice J. Stelfox ◽  
Thomas A. Bowden
Keyword(s):  
Sialic Acid ◽  
Host Cell ◽  
Receptor Binding ◽  
Cell Attachment ◽  
Cell Entry ◽  
Head Region ◽  
Close Proximity ◽  
Host Cell Attachment ◽  
Host Cell Entry

The bat-borne paramyxovirus, Sosuga virus (SosV), is one of many paramyxoviruses recently identified and classified within the newly established genus Pararubulavirus, family Paramyxoviridae. The envelope surface of SosV presents a receptor-binding protein (RBP), SosV-RBP, which facilitates host-cell attachment and entry. Unlike closely related hemagglutinin neuraminidase RBPs from other genera of the Paramyxoviridae, SosV-RBP and other pararubulavirus RBPs lack many of the stringently conserved residues required for sialic acid recognition and hydrolysis. We determined the crystal structure of the globular head region of SosV-RBP, revealing that while the glycoprotein presents a classical paramyxoviral six-bladed β-propeller fold and structurally classifies in close proximity to paramyxoviral RBPs with hemagglutinin-neuraminidase (HN) functionality, it presents a receptor-binding face incongruent with sialic acid recognition. Hemadsorption and neuraminidase activity analysis confirms the limited capacity of SosV-RBP to interact with sialic acid in vitro and indicates that SosV-RBP undergoes a nonclassical route of host-cell entry. The close overall structural conservation of SosV-RBP with other classical HN RBPs supports a model by which pararubulaviruses only recently diverged from sialic acid binding functionality.

Influenza A virus uses the aggresome processing machinery for host cell entry

Science ◽  
2014 ◽  
Vol 346 (6208) ◽  
pp. 473-477 ◽  
Author(s):  
Indranil Banerjee ◽  
Yasuyuki Miyake ◽  
Samuel Philip Nobs ◽  
Christoph Schneider ◽  
Peter Horvath ◽  
...  
Keyword(s):  
Host Cell ◽  
Influenza A Virus ◽  
Influenza A ◽  
Cell Entry ◽  
Processing Machinery ◽  
Host Cell Entry

scholarly journals Baculovirus Utilizes Cholesterol Transporter NIEMANN–Pick C1 for Host Cell Entry

2019 ◽  
Vol 10 ◽  
Author(s):  
Zhihong Li ◽  
Youpeng Fan ◽  
Junhong Wei ◽  
Xionge Mei ◽  
Qiang He ◽  
...  
Keyword(s):  
Host Cell ◽  
Cell Entry ◽  
Host Cell Entry ◽  
Niemann Pick
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