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Wang Y, Cao F, Zhou L, Liu H, Gao H, Cui G, Niu C, Zhang P, Li D, Liu S, Jiang Y, Wu G. Combining the Elicitor Up-Regulated Production of Unusual Linear Diterpene-Derived Variants for an In-Depth Assessment of the Application Value and Risk of the Medicinal and Edible Basidiomycete Schizophyllum commune. Molecules 2024; 29:2608. [PMID: 38893484 PMCID: PMC11173764 DOI: 10.3390/molecules29112608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
To better assess the practical value and avoid potential risks of the traditionally medicinal and edible basidiomycete Schizophyllum commune, which may arise from undescribed metabolites, a combination of elicitors was introduced for the first time to discover products from cryptic and low-expressed gene clusters under laboratory cultivation. Treating S. commune NJFU21 with the combination of five elicitors led to the upregulated production of a class of unusual linear diterpene-derived variants, including eleven new ones (1-11), along with three known ones (12-14). The structures and stereochemistry were determined by 1D and 2D NMR, HRESIMS, ECD, OR and VCD calculations. Notably, the elongation terminus of all the diterpenes was decorated by an unusual butenedioic acid moiety. Compound 1 was a rare monocyclic diterpene, while 2-6 possessed a tetrahydrofuran moiety. The truncated metabolites 4, 5 and 13 belong to the trinorditerpenes. All the diterpenes displayed approximately 70% scavenging of hydroxyl radicals at 50 μM and null cytotoxic activity at 10 μM. In addition, compound 1 exhibited potent antifungal activity against the plant pathogenic fungi Colletotrichum camelliae, with MIC values of 8 μg/mL. Our findings indicated that this class of diterpenes could provide valuable protectants for cosmetic ingredients and the lead compounds for agricultural fungicide development.
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Affiliation(s)
- Ying Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
| | - Fei Cao
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China, College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China;
| | - Luning Zhou
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (L.Z.); (D.L.)
| | - Hanwei Liu
- Ningbo Customs District Technology Center, Ningbo 315100, China;
| | - Hua Gao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
| | - Ge Cui
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
| | - Changshan Niu
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112, USA; (C.N.); (P.Z.)
| | - Peng Zhang
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112, USA; (C.N.); (P.Z.)
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (L.Z.); (D.L.)
| | - Songqi Liu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
| | - Yan Jiang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
| | - Guangwei Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; (Y.W.); (H.G.); (G.C.); (S.L.)
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Chen X, Chen S, Guo H, Lu X, Shen H, Liu L, Wang L, Chen B, Zhang Y, Liu Y. Bioactive Alkaloids from the Mangrove-Derived Fungus Nigrospora oryzae SYSU-MS0024. Mar Drugs 2024; 22:214. [PMID: 38786605 PMCID: PMC11123012 DOI: 10.3390/md22050214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/25/2024] [Accepted: 05/04/2024] [Indexed: 05/25/2024] Open
Abstract
Chemical investigation of marine fungus Nigrospora oryzae SYSU-MS0024 cultured on solid-rice medium led to the isolation of three new alkaloids, including a pair of epimers, nigrosporines A (1) and B (2), and a pair of enantiomers, (+)-nigrosporine C (+)-3, and (-)-nigrosporine C (-)-3, together with eight known compounds (4-11). Their structures were elucidated based on extensive mass spectrometry (MS) and 1D/2D nuclear magnetic resonance (NMR) spectroscopic analyses and compared with data in the literature. The absolute configurations of compounds 1-3 were determined by a combination of electronic circular dichroism (ECD) calculations, Mosher's method, and X-ray single-crystal diffraction technique using Cu Kα radiation. In bioassays, compound 2 exhibited moderate inhibition on NO accumulation induced by lipopolysaccharide (LPS) on BV-2 cells in a dose-dependent manner at 20, 50, and 100 μmol/L and without cytotoxicity in a concentration of 100.0 μmol/L. Moreover, compound 2 also showed moderate acetylcholinesterase (AChE) inhibitory activities with IC50 values of 103.7 μmol/L. Compound 5 exhibited moderate antioxidant activity with EC50 values of 167.0 μmol/L.
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Affiliation(s)
- Xiaokun Chen
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (L.W.); (Y.Z.)
| | - Senhua Chen
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; (S.C.); (H.G.); (X.L.); (L.L.)
| | - Heng Guo
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; (S.C.); (H.G.); (X.L.); (L.L.)
| | - Xin Lu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; (S.C.); (H.G.); (X.L.); (L.L.)
| | - Hongjie Shen
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China; (H.S.); (B.C.)
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; (S.C.); (H.G.); (X.L.); (L.L.)
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China; (H.S.); (B.C.)
| | - Li Wang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (L.W.); (Y.Z.)
| | - Bin Chen
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China; (H.S.); (B.C.)
| | - Yi Zhang
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (L.W.); (Y.Z.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Yayue Liu
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Zhanjiang Municipal Key Laboratory of Marine Drugs and Nutrition for Brain Health, Research Institute for Marine Drugs and Nutrition, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (L.W.); (Y.Z.)
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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Sharma A, Rashid M, Chauhan P, Kaur S, Kaur A. In vitro antibacterial and anti-biofilm potential of an endophytic Schizophyllum commune. AMB Express 2024; 14:10. [PMID: 38245627 PMCID: PMC10799838 DOI: 10.1186/s13568-024-01663-x] [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: 06/13/2023] [Accepted: 01/07/2024] [Indexed: 01/22/2024] Open
Abstract
The emergence of antibiotic resistance in pathogens is one of the major health concerns facing mankind as different bacterial strains have developed resistance to antibiotics over the period of time due to overuse and misuse of antibiotics. Besides this, ability to form biofilms is another major factor contributing to antibiotic resistance, which has necessitated the need for exploration for novel and effective compounds with ability to inhibit biofilm formation. Endophytic fungi are reported to exhibit antibacterial and anti-biofilm potential and could serve as a potent source of novel antibacterial compounds. Majority of the bioactivities have been reported from fungi belonging to phylum Ascomycota. Endophytic basidiomycetes, inspite of their profound ability to serve as a source of bioactive compounds have not been exploited extensively. In present study, an attempt was made to assess the antibacterial, anti-biofilm and biofilm dispersion potential of an endophytic basidiomycetous fungus Schizophyllum commune procured from the culture collection of our lab. Ethyl acetate extract of S. commune showed good antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa, Salmonella enterica and Vibrio cholerae. Minimum inhibitory concentration and minimum bactericidal concentration of the extract were in the range of 1.25-10 mg/ml against the tested bacterial pathogens. The mode of action was determined to be bactericidal which was further confirmed by time kill studies. Good anti-biofilm activity of S. commune extract was recorded against K. pneumoniae and S. enterica, which was further validated by fluorescence microscopy. The present study highlights the importance of endophytic basidiomycetes as source of therapeutic compounds.
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Affiliation(s)
- Avinash Sharma
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Muzamil Rashid
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Pooja Chauhan
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Sukhraj Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Amarjeet Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
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