New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti

Abstract Two novel compounds including a cyclohelminthol type polyketide (namely oxaleimide K, 1) and a maleimide derivative (namely peniroquefortine A, 2), and a new natural product (namely 2-(acetylamino)-N-[(1E)-2-phenylethenyl]-acetamide, 3), together with four known compounds (4–7), were isolat...

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Main Authors: Shuyuan Mo, Ziming Zhao, Zi Ye, Zhihong Huang, Yaxin Zhang, Wanqi Yang, Jianping Wang, Zhengxi Hu, Yonghui Zhang
Format: Article
Language:English
Published: SpringerOpen 2023-06-01
Series:Natural Products and Bioprospecting
Subjects:
Online Access:https://doi.org/10.1007/s13659-023-00381-4
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author Shuyuan Mo
Ziming Zhao
Zi Ye
Zhihong Huang
Yaxin Zhang
Wanqi Yang
Jianping Wang
Zhengxi Hu
Yonghui Zhang
author_facet Shuyuan Mo
Ziming Zhao
Zi Ye
Zhihong Huang
Yaxin Zhang
Wanqi Yang
Jianping Wang
Zhengxi Hu
Yonghui Zhang
author_sort Shuyuan Mo
collection DOAJ
description Abstract Two novel compounds including a cyclohelminthol type polyketide (namely oxaleimide K, 1) and a maleimide derivative (namely peniroquefortine A, 2), and a new natural product (namely 2-(acetylamino)-N-[(1E)-2-phenylethenyl]-acetamide, 3), together with four known compounds (4–7), were isolated and identified from fungus Penicillium roqueforti, which was separated from the root soil of Hypericum beanii N. Robson collected from the Shennongjia Forestry District, Hubei Province. Their structures including absolute configurations were mainly established by the NMR spectroscopy analyses and single-crystal X-ray diffraction experiment. Compound 1 represents the second example of a cyclohelminthol type polyketide, which features a rare 6/6/5/5 tetracyclic system and a branched aliphatic chain containing a terminal olefin (oct-1-en-3-yl) moiety, and compound 2 possesses an unprecedented carbon skeleton that is uniquely defined by a maleimide moiety linked to the respective 4-methylene-2-(3-methylbut-2-en-1-yl)-phenol and para-substituted aromatic moieties via the carbon-carbon bonds. Remarkably, the absolute configuration of a cyclohelminthol type polyketide as exemplified by compound 1 is determined by the single-crystal diffraction analysis for the first time, highlighting an E-configuration for the linkage of a succinimide moiety and a tetrahydrofuran moiety for 1 rather than a Z-configuration as previously reported in the biosynthesis study, which gives a new insight into the structural elucidation of this category of polyketides. Additionally, compound 1 exhibited significant cytotoxic activity against multiple tumor cells, especially against the Farage and SU-DHL-2 cells (IC50 < 20 µM, 48 h). Further mechanism study revealed that compound 1 significantly induced cell cycle arrest in Farage and SU-DHL-2 cells by causing abnormal ROS level and triggering oxidative stress. Graphical Abstract
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spelling doaj.art-a8a1c842fa5b41f395002b05b7a862ca2023-06-04T11:42:01ZengSpringerOpenNatural Products and Bioprospecting2192-21952192-22092023-06-011311810.1007/s13659-023-00381-4New secondary metabolites with cytotoxicity from fungus Penicillium roquefortiShuyuan Mo0Ziming Zhao1Zi Ye2Zhihong Huang3Yaxin Zhang4Wanqi Yang5Jianping Wang6Zhengxi Hu7Yonghui Zhang8Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and TechnologyAbstract Two novel compounds including a cyclohelminthol type polyketide (namely oxaleimide K, 1) and a maleimide derivative (namely peniroquefortine A, 2), and a new natural product (namely 2-(acetylamino)-N-[(1E)-2-phenylethenyl]-acetamide, 3), together with four known compounds (4–7), were isolated and identified from fungus Penicillium roqueforti, which was separated from the root soil of Hypericum beanii N. Robson collected from the Shennongjia Forestry District, Hubei Province. Their structures including absolute configurations were mainly established by the NMR spectroscopy analyses and single-crystal X-ray diffraction experiment. Compound 1 represents the second example of a cyclohelminthol type polyketide, which features a rare 6/6/5/5 tetracyclic system and a branched aliphatic chain containing a terminal olefin (oct-1-en-3-yl) moiety, and compound 2 possesses an unprecedented carbon skeleton that is uniquely defined by a maleimide moiety linked to the respective 4-methylene-2-(3-methylbut-2-en-1-yl)-phenol and para-substituted aromatic moieties via the carbon-carbon bonds. Remarkably, the absolute configuration of a cyclohelminthol type polyketide as exemplified by compound 1 is determined by the single-crystal diffraction analysis for the first time, highlighting an E-configuration for the linkage of a succinimide moiety and a tetrahydrofuran moiety for 1 rather than a Z-configuration as previously reported in the biosynthesis study, which gives a new insight into the structural elucidation of this category of polyketides. Additionally, compound 1 exhibited significant cytotoxic activity against multiple tumor cells, especially against the Farage and SU-DHL-2 cells (IC50 < 20 µM, 48 h). Further mechanism study revealed that compound 1 significantly induced cell cycle arrest in Farage and SU-DHL-2 cells by causing abnormal ROS level and triggering oxidative stress. Graphical Abstracthttps://doi.org/10.1007/s13659-023-00381-4Hypericum beanii N. RobsonRoot soil-derived fungusPenicillium roquefortiStructural elucidationCytotoxicity
spellingShingle Shuyuan Mo
Ziming Zhao
Zi Ye
Zhihong Huang
Yaxin Zhang
Wanqi Yang
Jianping Wang
Zhengxi Hu
Yonghui Zhang
New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
Natural Products and Bioprospecting
Hypericum beanii N. Robson
Root soil-derived fungus
Penicillium roqueforti
Structural elucidation
Cytotoxicity
title New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
title_full New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
title_fullStr New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
title_full_unstemmed New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
title_short New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti
title_sort new secondary metabolites with cytotoxicity from fungus penicillium roqueforti
topic Hypericum beanii N. Robson
Root soil-derived fungus
Penicillium roqueforti
Structural elucidation
Cytotoxicity
url https://doi.org/10.1007/s13659-023-00381-4
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