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Potent and Selective Inhibitors of Human Monoamine Oxidase A from an Endogenous Lichen Fungus Diaporthe mahothocarpus
- Title
- Potent and Selective Inhibitors of Human Monoamine Oxidase A from an Endogenous Lichen Fungus Diaporthe mahothocarpus
- Authors
- Jeong, Geum Seok; Hillman, Prima F.; Kang, Myung-Gyun; Hwang, Sungbo; Park, Jong-Eun; Nam, Sang-Jip; Park, Daeui; Kim, Hoon
- Ewha Authors
- 남상집
- SCOPUS Author ID
- 남상집
- Issue Date
- 2021
- Journal Title
- JOURNAL OF FUNGI
- ISSN
- 2309-608X
- Citation
- JOURNAL OF FUNGI vol. 7, no. 10
- Keywords
- endogenous lichen fungus; Diaporthe mahothocarpus; alternariol; 5-hydroxy-alternariol; mycoepoxydiene; selective monoamine oxidase A inhibitor; docking simulation
- Publisher
- MDPI
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Using 126 endogenous lichen fungus (ELF) extracts, inhibitory activities against monoamine oxidases (MAOs) and cholinesterases (ChEs) were evaluated. Among them, extract ELF29 of the endogenous fungus Diaporthe mahothocarpus of the lichen Cladonia symphycarpia showed the highest inhibitory activity against hMAO-A. Compounds alternariol (AT), 5 '-hydroxy-alternariol (HAT), and mycoepoxydiene (MED), isolated from the extract, had potent inhibitory activities against hMAO-A with IC50 values of 0.020, 0.31, and 8.68 mu M, respectively. AT, HAT, and MED are reversible competitive inhibitors of hMAO-A with K-i values of 0.0075, 0.116, and 3.76 mu M, respectively. The molecular docking studies suggested that AT, HAT, and MED had higher binding affinities for hMAO-A (-9.1, -6.9, and -5.6 kcal/mol, respectively) than for hMAO-B (-6.3, -5.2, and -3.7 kcal/mol, respectively). The relative tight binding might result from a hydrogen bond interaction of the three compounds with a Tyr444 residue in hMAO-A, whereas no hydrogen bond interaction was proposed in hMAO-B. In silico pharmacokinetics, the three compounds showed high gastrointestinal absorption without violating Lipinski's five rules, but only MED showed high probability to cross the blood-brain barrier. These results suggest that AT, HAT, and MED are candidates for treating neuropsychiatric disorders, such as depression and cardiovascular disease.
- DOI
- 10.3390/jof7100876
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
- Files in This Item:
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