stilbenes and Pneumonia--Viral

COVID-19 has become one of the worst epidemic in the world, currently already more than four million people have been infected, which probably co-exist with human beings, and has a significant impact on the global economy and political order. In the process of fighting against the epidemic in China, the clinical value of a variety of herbal medicines has been recognized and written into the clinical application guide. However, their effective molecular mechanism and potential targets are still not clear. Pathology and pharmacology research will gradually attract attention in the post-epidemic outbreak term. Here, we constructed a COVID-19 protein microarray of potential therapy targets, which contains the main drug targets to the SARS-CoV-2 virus and the anti-virus, anti-inflammatory cellar targets of the host. Series of quality controls test has been carried out, which showed that it could be applied for drug target screening of bio-active natural products. The establishment of this microarray will provide a useful tool for the study of the molecular pharmacology of natural products.

Topics: Antiviral Agents; Betacoronavirus; Biological Products; Chlorogenic Acid; Coronavirus Infections; COVID-19; Diterpenes; Drug Discovery; Drugs, Chinese Herbal; Glucosides; HEK293 Cells; Humans; Molecular Docking Simulation; Molecular Targeted Therapy; Pandemics; Pneumonia, Viral; Protein Array Analysis; Proteins; SARS-CoV-2; Stilbenes; Viral Proteins

SARS-CoV-2 has caused COVID-19 outbreak with nearly 2 M infected people and over 100K death worldwide, until middle of April 2020. There is no confirmed drug for the treatment of COVID-19 yet. As the disease spread fast and threaten human life, repositioning of FDA approved drugs may provide fast options for treatment. In this aspect, structure-based drug design could be applied as a powerful approach in distinguishing the viral drug target regions from the host. Evaluation of variations in SARS-CoV-2 genome may ease finding specific drug targets in the viral genome. In this study, 3458 SARS-CoV-2 genome sequences isolated from all around the world were analyzed. Incidence of C17747T and A17858G mutations were observed to be much higher than others and they were on Nsp13, a vital enzyme of SARS-CoV-2. Effect of these mutations was evaluated on protein-drug interactions using in silico methods. The most potent drugs were found to interact with the key and neighbor residues of the active site responsible from ATP hydrolysis. As result, cangrelor, fludarabine, folic acid and polydatin were determined to be the most potent drugs which have potency to inhibit both the wild type and mutant SARS-CoV-2 helicase. Clinical data supporting these findings would be important towards overcoming COVID-19.

Topics: Adenosine Monophosphate; Amino Acid Sequence; Betacoronavirus; Binding Sites; Computer Simulation; Coronavirus Infections; COVID-19; COVID-19 Drug Treatment; Drug Approval; Drug Repositioning; Enzyme Inhibitors; Folic Acid; Genome, Viral; Glucosides; Humans; Methyltransferases; Molecular Docking Simulation; Mutation; Pandemics; Pneumonia, Viral; RNA Helicases; SARS-CoV-2; Stilbenes; Vidarabine; Viral Nonstructural Proteins