Phytochemical and in silico studies for potential constituents from Centaurium spicatum as candidates against the SARS-CoV-2 main protease and RNA-dependent RNA polymerase.

Autor: Allam, Ahmed E., Abouelela, Mohamed E., Assaf, Hamdy K., Sayed, Ahmed M., Nafady, Alaa M., El-Shanawany, Mohamed A., Takano, Fumihide, Ohta, Tomihisa
Předmět:
Zdroj: Natural Product Research; Nov2022, Vol. 36 Issue 22, p5724-5731, 8p
Abstrakt: In the present study, a new secoiridoid glycoside lisianthoside II 1, along with seven known compounds 2–8, were isolated from Centaurium spicatum L. In-silico molecular docking and molecular dynamic simulation against SARS-CoV-2 Main protease (Mpro) and RNA-dependent RNA polymerase (RdRp) were conducted. The affinity docking scores revealed that 8 is the best bound ligand to Mpro active site with binding energy of −14.9877 kcal/mol (RSMD = 1.16 Å), while 6 was the highest against RdRp (−16.9572 kcal/mol, RMSD = 1.01 Å). Moreover, the molecular dynamic simulation revealed that 8 with a (ΔG) of −7.9 kcal/mol (RMSD value of 2.6 Å) and 6 (RMSD value of 1.6 Å) and binding free energy (ΔG) of −7.1 kcal/mol achieved the highest stability over 50 ns of MDS inside the Mpro and RdRp enzyme's active site, respectively. Hence, the isolated compounds could be a good lead for development of new leads targeting COVID-19. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index