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Trung HT, Purnomo KA, Yu SY, Yang ZJ, Hu HC, Hwang TL, Tuan NN, Tu LN, Duc DX, Quang LD, Backlund A, Thang TD, Chang FR. Anti-inflammatory and Antiphytopathogenic Fungal Activity of 2,3- seco-Tirucallane Triterpenoids Meliadubins A and B from Melia dubia Cav. Barks with ChemGPS-NP and In Silico Prediction. ACS OMEGA 2023; 8:37116-37127. [PMID: 37841162 PMCID: PMC10568771 DOI: 10.1021/acsomega.3c04657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/28/2023] [Indexed: 10/17/2023]
Abstract
Two new rearranged 2,3-seco-tirucallane triterpenoids, meliadubins A (1) and B (2), along with four known compounds, 3-6, were isolated from the barks of Melia dubia Cav. Compound 2 exhibited a significant inflammatory inhibition effect toward superoxide anion generation in human neutrophils (EC50 at 5.54 ± 0.36 μM). It bound to active sites of a human inducible nitric oxide synthase (3E7G) through interactions with the residues of GLU377 and PRO350, which may benefit in reducing the neutrophilic inflammation effect. The ChemGPS-NP interpretation combined with bioactivity assay and in silico prediction results suggested 2 to be an agent for targeting iNOS with different mechanisms as compared to a selected set of current approved drugs. Moreover, compounds 1 and 2 showed remarkable inhibition against the rice pathogenic fungus Magnaporthe oryzae in a dose-dependent manner with IC50 values of 137.20 ± 9.55 and 182.50 ± 18.27 μM, respectively. Both 1 and 2 displayed interactions with the residue of TYR223, a key active site of trihydroxynaphthalene reductase (1YBV). The interpretation of 1 and 2 in the ChemGPS-NP physical-chemical property space indicated that both compounds are quite different compared to all members of a selected set of reference compounds. In light of demonstrated biological activity and in silico prediction experiments, both compounds possibly exhibited activity against phytopathogenic fungi via a novel mode of action.
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Affiliation(s)
- Hieu Tran Trung
- Department
of Chemistry, Vinh University, Vinh City 462030, Viet Nam
| | - Kartiko Arif Purnomo
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Szu-Yin Yu
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Institute
of Pharmacognosy, University of Szeged, Szeged 6720, Hungary
| | - Zih-Jie Yang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Hao-Chun Hu
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Institute of Pharmaceutical
Chemistry, University of Szeged, Szeged 6720, Hungary
- Graduate
Institute of Natural Products, School of Traditional Medicine, College
of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
| | - Tsong-Long Hwang
- Graduate
Institute of Natural Products, School of Traditional Medicine, College
of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
- Research
Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic
Safety, and Graduate Institute of Health Industry Technology, College
of Human Ecology, Chang Gung University
of Science and Technology, Taoyuan 333324, Taiwan
- Department
of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333423, Taiwan
| | - Nguyen Ngoc Tuan
- Institute
of Biotechnology and Food Technology, Industrial
University of Ho Chi Minh City, Ho Chi Minh City 727000, Viet Nam
| | - Le Ngoc Tu
- Faculty
of Chemistry, Ho Chi Minh City University
of Education, Ho Chi
Minh City 749000, Viet Nam
| | - Dau Xuan Duc
- Department
of Chemistry, Vinh University, Vinh City 462030, Viet Nam
| | - Le Dang Quang
- Institute
for Tropical Technology, Vietnam Academy
of Science and Technology (VAST), Hanoi 122000, Viet Nam
| | - Anders Backlund
- Research Group Pharmacognosy, Department
of Pharmaceutical Biosciences, Uppsala University, Uppsala S-75124, Sweden
| | - Tran Dinh Thang
- Institute
of Biotechnology and Food Technology, Industrial
University of Ho Chi Minh City, Ho Chi Minh City 727000, Viet Nam
| | - Fang-Rong Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
- Drug Development
and Value Creation Research Center, Kaohsiung
Medical University, Kaohsiung 807378, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
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