Bioactive Alkaloids from Genus Aspergillus : Mechanistic Interpretation of Their Antimicrobial and Potential SARS-CoV-2 Inhibitory Activity Using Molecular Modelling

• Published in: International journal of molecular sciences Vol. 22; no. 4; p. 1866
• Main Authors: Youssef, Fadia S, Alshammari, Elham, Ashour, Mohamed L
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI 13.02.2021; MDPI AG
• Subjects: alkaloids; Alkaloids - chemistry; Alkaloids - pharmacology; Angiotensin-Converting Enzyme 2 - metabolism; Animals; Anti-Infective Agents - chemistry; Anti-Infective Agents - pharmacology; antimicrobial activity; Antiviral Agents - chemistry; Antiviral Agents - pharmacology; Aspergillus; Aspergillus - chemistry; COVID-19 - drug therapy; COVID-19 - metabolism; Drug Discovery; Humans; Molecular Docking Simulation; molecular modelling; Review; SARS-CoV-2 - drug effects; SARS-CoV-2 - physiology; Aspergillus; antimicrobial activity; molecular modelling; alkaloids
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms22041866

Genus represents a widely spread genus of fungi that is highly popular for possessing potent medicinal potential comprising mainly antimicrobial, cytotoxic and antioxidant properties. They are highly attributed to its richness by alkaloids, terpenes, steroids and polyketons. This review aimed to comprehensively explore the diverse alkaloids isolated and identified from different species of genus that were found to be associated with different marine organisms regarding their chemistry and biology. Around 174 alkaloid metabolites were reported, 66 of which showed important biological activities with respect to the tested biological activities mainly comprising antiviral, antibacterial, antifungal, cytotoxic, antioxidant and antifouling activities. Besides, in silico studies on different microbial proteins comprising DNA-gyrase, topoisomerase IV, dihydrofolate reductase, transcriptional regulator TcaR (protein), and aminoglycoside nucleotidyl transferase were done for sixteen alkaloids that showed anti-infective potential for better mechanistic interpretation of their probable mode of action. The inhibitory potential of compounds vs. Angiotensin-Converting Enzyme 2 (ACE2) as an important therapeutic target combating COVID-19 infection and its complication was also examined using molecular docking. Fumigatoside E showed the best fitting within the active sites of all the examined proteins. Thus, species isolated from marine organisms could afford bioactive entities combating infectious diseases.