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Goulart MO, Paulino JM, Silveira NN, Bertonha AF, Berlinck RGS, Santos RA. Isolation and comparative genotoxicity screening of trichokonins VI and VIII on CHO-K1 cells. Drug Chem Toxicol 2024:1-9. [PMID: 39262131 DOI: 10.1080/01480545.2024.2389977] [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: 12/01/2023] [Revised: 07/10/2024] [Accepted: 08/04/2024] [Indexed: 09/13/2024]
Abstract
Peptaibols are fungal peptides that exhibit efficacy against pathogen microorganisms. Trichokonin VI (TK-VI) and trichokonin VIII (TK-VIII) are known peptaibols isolated from the endolichenic fungi Hypocrea sp. Previous investigations reported that trichokonin VI presents antiproliferative effects on tumor cells. This study is pioneering in elucidating the genotoxic effects of TK-VI and TK-VIII, contributing to the thorough assessment of their safety as potential therapeutic agents. The present investigation aimed to evaluate the genotoxicity of TK-VI and TK-VIII on CHO-K1 cells. Cytotoxicity was evaluated using the XTT assay and clonogenic survival assays, followed by evaluation of DNA damage using the comet assay and micronucleus test conducted in vitro. The XTT assay results indicated IC50 values of 10.30 µM and 9.89 µM for TK-VI and TK-VIII, respectively. The clonogenic survival assay indicated that concentrations of 10 µM or higher completely inhibited the cell colony formation. In the comet assay, both TK-VI and TK-VIII increased the DNA damage score and the frequency of comet nuclei in all tested concentrations. In the micronucleus assay, TK-VI and TK-VIII at 10 µM increased the frequency of MN in CHO-K1 cells. Both TK-VI and TK-VIII exhibited genotoxic effects. Our findings underscore the importance of considering the genotoxicological safety of peptaibols, particularly when assessing their potential for other biological activities.
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Affiliation(s)
| | | | | | - Ariane F Bertonha
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil
| | - Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil
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2
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Park YS, Kim ES, Deyrup ST, Lee JW, Shim SH. Cytotoxic Peptaibols from Trichoderma strigosum. JOURNAL OF NATURAL PRODUCTS 2024; 87:2081-2094. [PMID: 39038494 DOI: 10.1021/acs.jnatprod.4c00590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Five new lipopeptaibols (1-5) and eight new 19-residue peptaibols (8-15) along with two known lipopeptaibols, lipovelutibols C (6) and D (7) were isolated from Trichoderma strigosum. The planar structures of the newly discovered peptaibols (1-5, 8-15) were elucidated using 1D and 2D NMR, and UPLC-MS/MS data. The absolute configurations for new peptaibols (1-5, 8-15) were elucidated using the advanced Marfey's method and GITC (2,3,4,6-tetra-O-acetyl-β-d-glucopyranosyl isothiocyanate) derivatization. Through analysis of CD spectra, these peptabols were found to have right-handed helical conformations. While most of the new compounds were significantly more active than the positive control, 9, 10, 12, and 15 containing Ser and Leu at positions 10 and 11, respectively, were the most cytotoxic against MDA-MB-231, SNU449, SKOV3, DU145, and HCT116 cancer cell lines, and the 19-residue peptaibols were generally more potent than lipopeptaibols.
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Affiliation(s)
- Yun Seo Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun-Sook Kim
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Stephen T Deyrup
- Department of Chemistry and Biochemistry, Siena College, Londonville, New York 12211, United States
| | - Jin Woo Lee
- College of Pharmacy, Duksung Women's University, Seoul 01369, Republic of Korea
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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3
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Ruan QF, He Y, Jiang SQ, Cui H, Jin J, Zhao ZX. Cytotoxic indole diterpenoids and rare pyridoxatin atropisomers from the endophytic fungus Tolypocladium sp. SHJJ1. Fitoterapia 2024; 175:105983. [PMID: 38679297 DOI: 10.1016/j.fitote.2024.105983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/01/2024]
Abstract
Phytochemical investigation on the extract of endophytic fungus Tolypocladium sp. SHJJ1 resulted in the identification of a pair of previously undescribed pyridoxatin atropisomers [1 (M/P)] and three new indole diterpenoids (3-5), together with a pair of known pyridoxatin atropisomers [2 (M/P)] and ten known indole diterpenoids (6-15). Their structures, including their absolute configurations were elucidated by extensive spectroscopic analysis, quantum chemical calculations, and X-ray diffraction. Among the undescribed natural products, [1 (M/P)] that two rapidly interconverting atropisomers are the third example to report in the pyridoxatin atropisomers. Except for compounds 1 (M/P) and 2 (M/P), all other compounds were tested for their cytotoxicity using HepG2, A549, and MCF-7 human cell lines. Compound 9 displayed moderate cytotoxicity against the HepG2, A549, and MCF-7 cell lines with IC50 values of 32.39 ± 1.48 μM, 26.06 ± 1.14 μM, and 31.44 ± 1.94 μM, respectively, which was similar to the positive drug cisplatin (with IC50 values of 32.55 ± 1.76 μM, 18.40 ± 1.43 μM, and 27.31 ± 1.22 μM, respectively).
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Affiliation(s)
- Qing-Feng Ruan
- Department of Pharmacy, Wuhan No. 1 Hospital, Wuhan 430022, China
| | - Yi He
- Department of Pharmacy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430061, China
| | - Shi-Qin Jiang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Hui Cui
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Jing Jin
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhong-Xiang Zhao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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4
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Morehouse NJ, Flewelling AJ, Liu DY, Cavanagh H, Linington RG, Johnson JA, Gray CA. Tolypocaibols: Antibacterial Lipopeptaibols from a Tolypocladium sp. Endophyte of the Marine Macroalga Spongomorpha arcta. JOURNAL OF NATURAL PRODUCTS 2023; 86:1529-1535. [PMID: 37313957 DOI: 10.1021/acs.jnatprod.3c00233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two new lipopeptaibols, tolypocaibols A (1) and B (2), and the mixed NRPS-polyketide-shikimate natural product maximiscin [(P/M)-3)] were isolated from a Tolypocladium sp. fungal endophyte of the marine alga Spongomorpha arcta. Analysis of NMR and mass spectrometry data revealed the amino acid sequences of the lipopeptaibols, which both comprise 11 residues with a valinol C-terminus and a decanoyl acyl chain at the N-terminus. The configuration of the amino acids was determined by Marfey's analysis. Tolypocaibols A (1) and B (2) showed moderate, selective inhibition against Gram-positive and acid-fast bacterial strains, while maximiscin [(P/M)-3)] showed moderate, broad-spectrum antibiotic activity.
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Affiliation(s)
- Nicholas J Morehouse
- Department of Biological Sciences, University of New Brunswick, Saint John, New Brunswick E2K 5E2, Canada
| | - Andrew J Flewelling
- Department of Biological Sciences, University of New Brunswick, Saint John, New Brunswick E2K 5E2, Canada
| | - Dennis Y Liu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Hannah Cavanagh
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Roger G Linington
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - John A Johnson
- Department of Biological Sciences, University of New Brunswick, Saint John, New Brunswick E2K 5E2, Canada
| | - Christopher A Gray
- Department of Biological Sciences, University of New Brunswick, Saint John, New Brunswick E2K 5E2, Canada
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
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Wu XQ, Li J, Zhou X, Wang J, Tan YF, Mo JS, Liu S, Xu KP, Tan GS, Zhang W, Wang WX. Liver-cell protective pyridones from the fungi Tolypocladium album dws120. PHYTOCHEMISTRY 2023; 212:113730. [PMID: 37220864 DOI: 10.1016/j.phytochem.2023.113730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/01/2023] [Accepted: 05/18/2023] [Indexed: 05/25/2023]
Abstract
Five previously undescribed pyridone derivatives, tolypyridones I-M, were identified from the solid rice medium fermented by Tolypocladium album dws120, along with two known compounds tolypyridone A (or trichodin A) and pyridoxatin. Their planar structures and partial relative configurations have been determined by careful interpretation of their spectroscopic data. The full assignment of the relative and absolute configurations of tolypyridones I-M was achieved by gauge-independent atomic orbital 13C NMR calculation, quantitative nuclear Overhauser effects based interatomic distance calculation, and electronic circular dichroism calculation. In addition, we have fully determined the configuration of tolypyridone A by X-ray diffraction analysis. In bioassay, tolypyridones I was able to restore cell viability and inhibit the release of alanine aminotransferase and aspartate aminotransferase for ethanol-induced LO2 cell, suggesting its potential as a liver protective agent.
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Affiliation(s)
- Xiao-Qian Wu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Jing Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China; Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Xi Zhou
- School of Life Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Jing Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Yu-Fen Tan
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Ji-Song Mo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Shao Liu
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Kang-Ping Xu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China
| | - Gui-Shan Tan
- Department of Pharmacy, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, PR China
| | - Wei Zhang
- Hunan Institute for Drug Control, Changsha, Hunan, 410001, PR China
| | - Wen-Xuan Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410008, PR China.
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