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Sresuksai K, Jantaharn P, Sangvichien E, Suwannasai N, Mongkolthanaruk W, Senawong T, Amornkitbamrung V, Tontapha S, McCloskey S. Engleromophilane, a new broad spectrum bioactive eremophilane-type sesquiterpene from Engleromyces sinensis fungus. Nat Prod Res 2024:1-10. [PMID: 38329045 DOI: 10.1080/14786419.2024.2314638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/01/2024] [Indexed: 02/09/2024]
Abstract
A new eremophilane sesquiterpene, named engleromophilane (1) together with known eremoxylarin E (2) and steroids (3-7) were isolated from the fungus Engleromyces sinensis culture. The structures were deduced by the analysis of spectroscopic and MS data, together with the comparison of calculated 13C NMR chemical shifts and Electronic Circular Dichroism (ECD) spectra. Compound 1 showed cytotoxic effects against Hela, PC-3, HT29 and A549 cell lines with IC50 in the ranges of 4.84-9.48 μg/mL. Compounds 1 and 2 exhibited substantial antimicrobial activity against E. coli, S. aureus, and B. subtilis. Moreover, compounds 1-3 showed α-glucosidase inhibitory activity, in which 2 displayed a strong inhibitory effect with an IC50 value of 0.13 ± 0.01 µg/mL. This work has given additional value to the E. sinensis fungus as a remarkable bioactive compound producer, together with the possibility of increasing cultivation to industrial scales.
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Affiliation(s)
- Kittiwan Sresuksai
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Phongphan Jantaharn
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Ek Sangvichien
- Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bangkapi, Bangkok, Thailand
| | - Nuttika Suwannasai
- Department of Microbiology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
| | - Wiyada Mongkolthanaruk
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Thanaset Senawong
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Vittaya Amornkitbamrung
- Integrated Nanotechnology Research Center, Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sarawut Tontapha
- Integrated Nanotechnology Research Center, Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sirirath McCloskey
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Sresuksai K, Sawadsitang S, Jantaharn P, Noppawan P, Churat A, Suwannasai N, Mongkolthanaruk W, Senawong T, Tontapha S, Moontragoon P, Amornkitbamrung V, McCloskey S. Antiproliferative polyketides from fungus Xylaria cf. Longipes SWUF08-81 in different culture media. NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:6. [PMID: 38182854 PMCID: PMC10770013 DOI: 10.1007/s13659-023-00427-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/19/2023] [Indexed: 01/07/2024]
Abstract
Bioactive compounds from the wood-decay fungus Xylaria cf. longipes SWUF08-81, cultivated in three different culture media (GM, YM and PDB), were isolated. Their structures and stereochemistry were deduced from spectroscopic and MS data analysis, together with quantum chemical calculations of 13C NMR chemical shifts and electronic circular dichroism (ECD) spectra. Five undescribed polyketides including dibenzofuran (1), mellein (2), dihydroisocoumarin (15), and two pyrans (16, 17), together with twenty-three compounds were determined. Compounds 18 and 20 were significantly toxic against cancer cell lines (HCT116, HT29, MCF-7 and HeLa) based on the MTT assay. Quantification by HPLC showed that 18 was produced three-fold higher in the broth of PDB than YM. These studies showed that the production of different compounds were primarily dependent on nutrition sources and it has given a starting point for the growth optimization conditions for the scaling up of bioactive compounds production.
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Affiliation(s)
- Kittiwan Sresuksai
- Department of Chemistry, Faculty of Science, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sasiphimol Sawadsitang
- Department of Chemistry, Faculty of Science, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Phongphan Jantaharn
- Department of Chemistry, Faculty of Science, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Pakin Noppawan
- Department of Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
| | - Audomsak Churat
- Department of Chemistry, Faculty of Science, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nuttika Suwannasai
- Department of Microbiology, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Wiyada Mongkolthanaruk
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Thanaset Senawong
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sarawut Tontapha
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Pairot Moontragoon
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Vittaya Amornkitbamrung
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Institute of Nanomaterials Research and Innovation for Energy (IN-RIE), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sirirath McCloskey
- Department of Chemistry, Faculty of Science, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen, 40002, Thailand.
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