Pannorin isolated from marine Penicillium sp. SG-W3: a selective monoamine oxidase A inhibitor

Autor: Jong Min Oh, Qian Gao, Woong-Hee Shin, Eun-Young Lee, Dawoon Chung, Grace Choi, Sang-Jip Nam, Hoon Kim
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Applied Biological Chemistry, Vol 67, Iss 1, Pp 1-12 (2024)
Druh dokumentu: article
ISSN: 2468-0842
DOI: 10.1186/s13765-024-00878-7
Popis: Abstract Six compounds were isolated from Penicillium sp. SG-W3, a marine-derived fungus, and their inhibitory activities against target enzymes relating to neurological diseases were evaluated. Compound 1 (pannorin) was a potent and selective monoamine oxidase (MAO)-A inhibitor with a 50% inhibitory concentration (IC50) of 1.734 μM and a selectivity index (SI) of > 23.07 versus MAO-B, and it showed an efficient antioxidant activity. All compounds showed weak inhibitory activities against acetylcholinesterase, butyrylcholinesterase, and β-secretase. The inhibition constant (Ki) of 1 for MAO-A was 1.049 ± 0.030 μM with competitive inhibition. Molecular docking simulation predicted that compound 1 forms hydrogen bonds with MAO-A, and binds more tightly to MAO-A than to MAO-B (− 25.02 and − 24.06 kcal/mol, respectively). These results suggest that compound 1 is a selective, reversible, and competitive MAO-A inhibitor that can be a therapeutic candidate for treating neurological diseases.
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