1
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Chen W, Pang X, Song Y, Hu Y, Wang X, Wang L, Wang J. Antitumor aspochalasin and antiviral benzofuran derivatives from a marine-derived fungus Aspergillus sp. SCSIO41032. Nat Prod Res 2024:1-8. [PMID: 38853392 DOI: 10.1080/14786419.2024.2364930] [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: 01/31/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
Chemical investigation of the EtOAc extract of a deep-sea derived fungus Aspergillus sp. SCSIO41032 resulted in the isolation of ten known compounds, including eight aspochalasins. Their structures were elucidated by using extensive NMR spectroscopic, mass spectrometric and single crystal X-ray diffraction analysis. The detailed crystallographic data for structures 1, 2, and 4, along with the relative configurations of aspochalasin E (3) determined by its acetonide derivative were reported for the first time. The results of antitumor and antiviral activities showed that 3 displayed moderate antitumor activities against 22Rv1, PC-3, A549, and HCT-15 cell lines with IC50 values ranged from 5.9 ± 0.8 to 19.0 ± 7.7 μM, and 9 exhibited moderate antiviral activities against HSV-1/2 with EC50 values of 9.5 ± 0.5 and 5.4 ± 0.6 μM, respectively. Plate clone formation assays results indicated that 3 inhibited the 22Rv1, PC-3 cells growth in a dose-dependent manner.
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Affiliation(s)
- Weihao Chen
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, P. R. China
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
- Fuwai Hospital Chinese Academy of Medical Sciences, State Key Laboratory of Cardiovascular Disease, Shenzhen, P. R. China
| | - Xiaoyan Pang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
- Sanya Institute of Ocean Eco-Environmental Engineering, Sanya, P. R. China
| | - Yingying Song
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
| | - Yiwei Hu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
| | - Xueni Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning, P. R. China
| | - Lishu Wang
- Jilin Provincial Academy of Chinese Medicine Sciences, Changchun, P. R. China
| | - Junfeng Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P. R. China
- Sanya Institute of Ocean Eco-Environmental Engineering, Sanya, P. R. China
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2
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Javorská Ž, Rimpelová S, Labíková M, Perlíková P. Synthesis of cytochalasan analogues with aryl substituents at position 10. Org Biomol Chem 2024; 22:4536-4549. [PMID: 38758050 DOI: 10.1039/d4ob00634h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Cytochalasans are fungal metabolites that are known to inhibit actin polymerization. Despite their remarkable bioactivity, there are few studies on the structure-activity relationship (SAR) of the cytochalasan scaffold. The full potential of structural modifications remains largely unexplored. The substituent at position 10 of the cytochalasan scaffold is derived from an amino acid incorporated into the cytochalasan core, thus limiting the structural variability at this position in natural products. Additionally, modifications at this position have only been achieved through semisynthetic or mutasynthetic approaches using modified amino acids. This paper introduces a modular approach for late-stage modifications at position 10 of the cytochalasan scaffold. Iron-mediated cross-coupling reactions with corresponding Grignard reagents were used to introduce aryl or benzyl groups in position 10, resulting in the synthesis of six new cytochalasan analogues bearing non-natural aromatic residues. This methodology enables further exploration of modifications at this position and SAR studies among cytochalasan analogues.
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Affiliation(s)
- Žaneta Javorská
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic.
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Magdaléna Labíková
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic.
| | - Pavla Perlíková
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic.
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague, Czech Republic
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3
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Gu G, Hou X, Xue M, Jia X, Pan X, Xu D, Dai J, Lai D, Zhou L. Rosellichalasins A-H, cytotoxic cytochalasans from the endophytic fungus Rosellinia sp. Glinf021. PHYTOCHEMISTRY 2024; 222:114103. [PMID: 38636686 DOI: 10.1016/j.phytochem.2024.114103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/19/2024] [Accepted: 04/14/2024] [Indexed: 04/20/2024]
Abstract
Eight new cytochalasans rosellichalasins A-H (1-8), as well as two new shunt metabolites rosellinins A (9) and B (10) before intramolecular Diels-Alder cycloaddition reaction in cytochalasan biosynthesis, along with nine known cytochalsans (11-19) were isolated from the endophytic fungus Rosellinia sp. Glinf021, which was derived from the medicinal plant Glycyrrhiza inflata. Their structures were characterized by extensive analysis of 1D and 2D NMR as well as HRESIMS spectra and quantum chemical ECD calculations. The cytotoxic activities of these compounds were evaluated against four human cancer cell lines including HCT116, MDA-MB-231, BGC823, and PANC-1 with IC50 values ranging from 0.5 to 58.2 μM.
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Affiliation(s)
- Gan Gu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Xuwen Hou
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Mengyao Xue
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Xiaowei Jia
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Xiaoqian Pan
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Dan Xu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Jungui Dai
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100050, China
| | - Daowan Lai
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
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4
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Yang L, Wang Q, Ma QY, Xie QY, Gai CJ, Wu YG, Dai HF, Zhao YX. Diaporchalasins A-E, New Cytochalasins from the Endophytic Fungus Diaporthe sp. BMX12 Isolated from Aquilaria sinensis. Chem Biodivers 2024; 21:e202400567. [PMID: 38602253 DOI: 10.1002/cbdv.202400567] [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: 03/06/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/12/2024]
Abstract
Five new cytochalasins, diaporchalasins A-E (1-5), together with 14 known congeners (6-19) were isolated from the endophytic fungus Diaporthe sp. BMX12, which was isolated from the branches of Aquilaria sinensis. The structures of the new compounds were elucidated by extensive spectroscopic analyses including high-resolution electron spray ionization mass spectrometry (HR-ESI-MS) and nuclear magnetic resonance (NMR). Their absolute configurations were assigned by theoretical electronic circular dichroism (ECD) calculations. Compounds 11 and 12 featuring a keto carbonyl at C-21 displayed cytotoxicity toward K562, BEL-7402, SGC-7901, A549, and HeLa cell lines with IC50 values ranging from 4.4 to 47.4 μM.
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Affiliation(s)
- Li Yang
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - Qi Wang
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - Qing-Yun Ma
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - Qing-Yi Xie
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - Cui-Juan Gai
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - You-Gen Wu
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Hao-Fu Dai
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
| | - You-Xing Zhao
- Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province & National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, China
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5
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Chen L, Wang X, Zou Y, Tang MC. Genome Mining of a Fungal Polyketide Synthase-Nonribosomal Peptide Synthetase Hybrid Megasynthetase Pathway to Synthesize a Phytotoxic N-Acyl Amino Acid. Org Lett 2024; 26:3597-3601. [PMID: 38661293 DOI: 10.1021/acs.orglett.4c01039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Guided by the retrobiosynthesis hypothesis, we characterized a fungal polyketide synthase-nonribosomal peptide synthetase (PKS-NRPS) hybrid megasynthetase pathway to generate 2-trans-4-trans-2-methylsorbyl-d-leucine (1), a polyketide amino acid conjugate that inhibits Arabidopsis root growth. The biosynthesis of 1 includes a PKS-NRPS enzyme to assemble an N-acyl amino alcohol intermediate, which is further oxidized to an N-acyl amino acid (NAAA), demonstrating a new biosynthetic logic for synthesizing NAAAs and expanding the chemical space of products encoded by fungal PKS-NRPS clusters.
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Affiliation(s)
- Lin Chen
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory on Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- Zhang jiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 201203, China
| | - Xin Wang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yi Zou
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Man-Cheng Tang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory on Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- Zhang jiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai 201203, China
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6
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Xu ZL, Li BC, Huang LL, Lv LX, Luo Y, Xu WF, Yang RY. Two new cytochalasins from the endophytic fungus Xylaria sp. GDGJ-77B. Nat Prod Res 2024; 38:1503-1509. [PMID: 36469678 DOI: 10.1080/14786419.2022.2153362] [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: 09/23/2022] [Revised: 11/17/2022] [Accepted: 11/26/2022] [Indexed: 12/12/2022]
Abstract
Two new open-chain cytochalasins, xylarchalasins A and B (1 and 2), together with six known analogues (3-8), were isolated from the endophytic fungus Xylaria sp. GDGJ-77B from the Chinese medicinal plant Sophora tonkinensis. Their structures were elucidated on the basis of comprehensive spectroscopic analysis. Compound 2 displayed moderate antibacterial activities against Bacillus subtilis and Escherichia coli with MIC values of 25 and 12.5 μg/mL, respectively.
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Affiliation(s)
- Zhao-Long Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
- Guangxi Research Institute of Chemical Industry Co., Ltd., Nanning, P. R. China
| | - Ben-Chao Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
| | - Li-Li Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
| | - Liu-Xia Lv
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
| | - Yan Luo
- Life Sciences Institute, Guangxi Medical University, Nanning, P. R. China
| | - Wei-Feng Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
| | - Rui-Yun Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Collaborative Innovation Center for Guangxi Ethnic Medicine, Guangxi Normal University, Guilin, P. R. China
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7
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Vepřek NA, Cooper MH, Laprell L, Yang EJN, Folkerts S, Bao R, Boczkowska M, Palmer NJ, Dominguez R, Oertner TG, Pon LA, Zuchero JB, Trauner DH. Optical Control of G-Actin with a Photoswitchable Latrunculin. J Am Chem Soc 2024; 146:8895-8903. [PMID: 38511265 PMCID: PMC11302737 DOI: 10.1021/jacs.3c10776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Actin is one of the most abundant proteins in eukaryotic cells and is a key component of the cytoskeleton. A range of small molecules has emerged that interfere with actin dynamics by either binding to polymeric F-actin or monomeric G-actin to stabilize or destabilize filaments or prevent their formation and growth, respectively. Among these, the latrunculins, which bind to G-actin and affect polymerization, are widely used as tools to investigate actin-dependent cellular processes. Here, we report a photoswitchable version of latrunculin, termed opto-latrunculin (OptoLat), which binds to G-actin in a light-dependent fashion and affords optical control over actin polymerization. OptoLat can be activated with 390-490 nm pulsed light and rapidly relaxes to its inactive form in the dark. Light activated OptoLat induced depolymerization of F-actin networks in oligodendrocytes and budding yeast, as shown by fluorescence microscopy. Subcellular control of actin dynamics in human cancer cell lines was demonstrated via live cell imaging. Light-activated OptoLat also reduced microglia surveillance in organotypic mouse brain slices while ramification was not affected. Incubation in the dark did not alter the structural and functional integrity of the microglia. Together, our data demonstrate that OptoLat is a useful tool for the elucidation of G-actin dependent dynamic processes in cells and tissues.
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Affiliation(s)
- Nynke A. Vepřek
- Department of Chemistry, New York University, New York, NY 10003, USA
- Department of Chemistry, Ludwig Maximilian University, D-80539 Munich, Germany
| | - Madeline H. Cooper
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Laura Laprell
- Institute for Synaptic Physiology, ZMNH, University Medical Center Hamburg-Eppendorf, D-20251 Hamburg, Germany
| | - Emily Jie-Ning Yang
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Sander Folkerts
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Ruiyang Bao
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Malgorzata Boczkowska
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nicholas J. Palmer
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Roberto Dominguez
- Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Thomas G. Oertner
- Institute for Synaptic Physiology, ZMNH, University Medical Center Hamburg-Eppendorf, D-20251 Hamburg, Germany
| | - Liza A. Pon
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - J. Bradley Zuchero
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Dirk H. Trauner
- Department of Chemistry, New York University, New York, NY 10003, USA
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
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8
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Wu Z, Wang W, Li J, Ma C, Chen L, Che Q, Zhang G, Zhu T, Li D. Evolution-Based Discovery of Polyketide Acylated Valine from a Cytochalasin-Like Gene Cluster in Simplicillium lamelliciola HDN13430. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38447096 DOI: 10.1021/acs.jnatprod.3c01202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Utilizing a gene evolution-oriented approach for gene cluster mining, a cryptic cytochalasin-like gene cluster (sla) in Antarctic-derived Simplicillium lamelliciola HDN13430 was identified. Compared with the canonical cytochalasin biosynthetic gene clusters (BGCs), the sla gene cluster lacks the key α,β-hydrolase gene. Heterologous expression of the sla gene cluster led to the discovery of a new compound, slamysin (1), characterized by an N-acylated amino acid structure and demonstrating weak anti-Bacillus cereus activity. These findings underscore the potential of genetic evolution in uncovering novel compounds and indicating specific adaptive evolution within specialized habitats.
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Affiliation(s)
- Zuodong Wu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Wenxue Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Jilong Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Chuanteng Ma
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Liangzhen Chen
- Qingdao Vland Biotech Group Co., Ltd. Qingdao, Shandong 266102, People's Republic of China
| | - Qian Che
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Guojian Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao, Shandong 266237, People's Republic of China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Sanya Oceanographic Institute, Ocean University of China, Sanya, Hainan 572025, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao, Shandong 266237, People's Republic of China
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9
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Duan F, Peng X, Liu L, Meng X, Jin A, Ruan H. Chaepseubakerins A-J, ten undescribed cytotoxic [11]-chaetoglobosins from an endophytic fungus Pseudeurotium bakeri. PHYTOCHEMISTRY 2024; 218:113939. [PMID: 38052264 DOI: 10.1016/j.phytochem.2023.113939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/11/2023] [Accepted: 11/29/2023] [Indexed: 12/07/2023]
Abstract
Ten previously unreported [11]-chaetoglobosins, chaepseubakerins A-J (1-10), were characterized from the solid rice-based culture of Pseudeurotium bakeri P1-1-1, an endophyte harbored in the roots of Macrocoma tenue subsp. sullivantii Vitt. (Orthotrichaceae). Their structures were determined by spectroscopic analysis, single-crystal X-ray diffraction (Cu Kα radiation), and chemical methods. Chaepseubakerin A (1) exhibited significant cytotoxic effects against seven human cancer cell lines, A549, A427, HCT116, HT-29, HeLa, HepG2, and MCF-7, with IC50 values of 2.9, 3.0, 4.0, 4.4, 7.1, 6.7, and 8.9 μM, respectively. Mechanistically, 1 induced G2/M cell cycle arrest and apoptosis in A549, Hela, and HCT116 cells in a dose dependent manner.
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Affiliation(s)
- Fangfang Duan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, 430030, People's Republic of China; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, People's Republic of China
| | - Xiaogang Peng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, 430030, People's Republic of China
| | - Lin Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, 430030, People's Republic of China
| | - Xianggao Meng
- College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - An Jin
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, 430030, People's Republic of China; School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, 418000, People's Republic of China.
| | - Hanli Ruan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, 430030, People's Republic of China.
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10
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Formánek B, Dupommier D, Volfová T, Rimpelová S, Škarková A, Herciková J, Rösel D, Brábek J, Perlíková P. Synthesis and migrastatic activity of cytochalasin analogues lacking a macrocyclic moiety. RSC Med Chem 2024; 15:322-343. [PMID: 38283219 PMCID: PMC10809383 DOI: 10.1039/d3md00535f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/24/2023] [Indexed: 01/30/2024] Open
Abstract
Cytochalasans are known as inhibitors of actin polymerization and for their cytotoxic and migrastatic activity. In this study, we synthesized a series of cytochalasin derivatives that lack a macrocyclic moiety, a structural element traditionally considered essential for their biological activity. We focused on substituting the macrocycle with simple aryl-containing sidechains, and we have also synthesized compounds with different substitution patterns on the cytochalasin core. The cytochalasin analogues were screened for their migrastatic and cytotoxic activity. Compound 24 which shares the substitution pattern with natural cytochalasins B and D exhibited not only significant in vitro migrastatic activity towards BLM cells but also demonstrated inhibition of actin polymerization, with no cytotoxic effect observed at 50 μM concentration. Our results demonstrate that even compounds lacking the macrocyclic moiety can exhibit biological activities, albeit less pronounced than those of natural cytochalasins. However, our findings emphasize the pivotal role of substituting the core structure in switching between migrastatic activity and cytotoxicity. These findings hold significant promise for further development of easily accessible cytochalasan analogues as novel migrastatic agents.
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Affiliation(s)
- Bedřich Formánek
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague Technická 5 166 28 Prague Czech Republic
| | - Dorian Dupommier
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague Technická 5 166 28 Prague Czech Republic
| | - Tereza Volfová
- Department of Cell Biology, BIOCEV, Faculty of Science, Charles University Průmyslová 595, 252 50 Vestec Prague West Czech Republic
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague Technická 5 166 28 Prague The Czech Republic
| | - Aneta Škarková
- Department of Cell Biology, BIOCEV, Faculty of Science, Charles University Průmyslová 595, 252 50 Vestec Prague West Czech Republic
| | - Jana Herciková
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague Technická 5 166 28 Prague Czech Republic
| | - Daniel Rösel
- Department of Cell Biology, BIOCEV, Faculty of Science, Charles University Průmyslová 595, 252 50 Vestec Prague West Czech Republic
| | - Jan Brábek
- Department of Cell Biology, BIOCEV, Faculty of Science, Charles University Průmyslová 595, 252 50 Vestec Prague West Czech Republic
| | - Pavla Perlíková
- Department of Organic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague Technická 5 166 28 Prague Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences Flemingovo nám. 2 160 00 Prague Czech Republic
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11
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Heinemann H, Zhang H, Cox RJ. Reductive Release from a Hybrid PKS-NRPS during the Biosynthesis of Pyrichalasin H. Chemistry 2024; 30:e202302590. [PMID: 37926691 DOI: 10.1002/chem.202302590] [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: 09/08/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/07/2023]
Abstract
Three central steps during the biosynthesis of cytochalasan precursors, including reductive release, Knoevenagel cyclisation and Diels Alder cyclisation are not yet understood at a detailed molecular level. In this work we investigated the reductive release step catalysed by a hybrid polyketide synthase non-ribosomal peptide synthetase (PKS-NRPS) from the pyrichalasin H pathway. Synthetic thiolesters were used as substrate mimics for in vitro studies with the isolated reduction (R) and holo-thiolation (T) domains of the PKS-NRPS hybrid PyiS. These assays demonstrate that the PyiS R-domain mainly catalyses an NADPH-dependent reductive release of an aldehyde intermediate that quickly undergoes spontaneous Knoevenagel cyclisation. The R-domain can only process substrates that are covalently bound to the phosphopantetheine thiol of the upstream T-domain, but it shows little selectivity for the polyketide.
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Affiliation(s)
- Henrike Heinemann
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Haili Zhang
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Russell J Cox
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
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12
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Shi BB, Tian C, Lv X, Schinnerl J, Ye K, Guo H, Xu F, He Y, Ai HL, Liu JK. Boerelasins A-D, Four Unprecedented Cytochalasins from the Endophytic Fungus Boeremia Exigua. J Org Chem 2023; 88:13926-13933. [PMID: 37728955 DOI: 10.1021/acs.joc.3c01515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Four undescribed cytochalasins (1-4) were isolated from the endophytic fungus Boeremia exigua. Structurally, boerelasin A (1) represents the first example of a cytochalasin with a rare 5/5 bicyclic carbon core. Boerelasin B (2) possesses an unprecedented 5/6/5/6/8 pentacyclic ring system. Boerelasin C (3), a derivative from the common biosynthetic intermediate to 1, is a macrocyclic ring-opening cytochalasin, and boerelasin D (4) contains an uncommon six-carbon alkyl acid side chain. The structures were elucidated based on spectroscopic methods, electronic circular dichroism, spin-spin coupling constants, and calculated nuclear magnetic resonance with DP4+ analysis. These compounds exhibited significant cytotoxicity against the tumor cells.
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Affiliation(s)
- Bao-Bao Shi
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Chun Tian
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Xiao Lv
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Johann Schinnerl
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna A-1030, Austria
| | - Ke Ye
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Hui Guo
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Fan Xu
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Yu He
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Hong-Lian Ai
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan 430074, People's Republic of China
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13
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Liang X, Lin Y, Yu W, Yang M, Meng X, Yang W, Guo Y, Zhang R, Sun G. Chaetoglobosin A Contributes to the Antagonistic Action of Chaetomium globosum Strain 61239 Toward the Apple Valsa Canker Pathogen Cytospora mali. PHYTOPATHOLOGY 2023:PHYTO01230036R. [PMID: 37069143 DOI: 10.1094/phyto-01-23-0036-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Apple Valsa canker (AVC) weakens apple trees and significantly reduces apple production in China and other East Asian countries. Thus far, very few AVC-targeting biocontrol resources have been described. Here, we present a thorough description of a fungal isolate (Chaetomium globosum, 61239) that has strong antagonistic action toward the AVC causal agent Cytospora mali. Potato dextrose broth culture filtrate of strain 61239 completely suppressed the mycelial growth of C. mali on potato dextrose agar, and strongly constrained the development of AVC lesions in in vitro infection assays. ultra-performance liquid chromatography (UPLC) and HPLC-MS/MS investigations supported the conclusion that strain 61239 produces chaetoglobosin A, an antimicrobial metabolite that inhibits C. mali. Using genome sequencing, we discovered a gene cluster in strain 61239 that may be responsible for chaetoglobosin A production. Two of the cluster's genes-cheA, a PKS-NRPS hybrid enzyme, and cheB, an enoyl reductase-were individually silenced, which significantly decreased chaetoglobosin A accumulation as well as the strain's antagonistic activity against C. mali. Together, the findings of our investigation illustrate the potential use of Chaetomium globosum for the management of AVC disease and emphasize the significant contribution of chaetoglobosin A to the antagonistic action of strain 61239.
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Affiliation(s)
- Xiaofei Liang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Yuyi Lin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Wei Yu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Menghan Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Xiangchen Meng
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Wenrui Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Yunzhong Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Rong Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Guangyu Sun
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
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14
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Lambert C, Schmidt K, Karger M, Stadler M, Stradal TEB, Rottner K. Cytochalasans and Their Impact on Actin Filament Remodeling. Biomolecules 2023; 13:1247. [PMID: 37627312 PMCID: PMC10452583 DOI: 10.3390/biom13081247] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/28/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
The eukaryotic actin cytoskeleton comprises the protein itself in its monomeric and filamentous forms, G- and F-actin, as well as multiple interaction partners (actin-binding proteins, ABPs). This gives rise to a temporally and spatially controlled, dynamic network, eliciting a plethora of motility-associated processes. To interfere with the complex inter- and intracellular interactions the actin cytoskeleton confers, small molecular inhibitors have been used, foremost of all to study the relevance of actin filaments and their turnover for various cellular processes. The most prominent inhibitors act by, e.g., sequestering monomers or by interfering with the polymerization of new filaments and the elongation of existing filaments. Among these inhibitors used as tool compounds are the cytochalasans, fungal secondary metabolites known for decades and exploited for their F-actin polymerization inhibitory capabilities. In spite of their application as tool compounds for decades, comprehensive data are lacking that explain (i) how the structural deviances of the more than 400 cytochalasans described to date influence their bioactivity mechanistically and (ii) how the intricate network of ABPs reacts (or adapts) to cytochalasan binding. This review thus aims to summarize the information available concerning the structural features of cytochalasans and their influence on the described activities on cell morphology and actin cytoskeleton organization in eukaryotic cells.
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Affiliation(s)
- Christopher Lambert
- Molecular Cell Biology Group, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany;
| | - Katharina Schmidt
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Marius Karger
- Molecular Cell Biology Group, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany;
| | - Theresia E. B. Stradal
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Klemens Rottner
- Molecular Cell Biology Group, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany
- Braunschweig Integrated Centre of Systems Biology (BRICS), 38106 Braunschweig, Germany
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15
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Pruksaphon K, Amsri A, Thammasit P, Nosanchuk JD, Youngchim S. Extracellular vesicles derived from Talaromyces marneffei contain immunogenic compounds and modulate THP-1 macrophage responses. Front Immunol 2023; 14:1192326. [PMID: 37457708 PMCID: PMC10339390 DOI: 10.3389/fimmu.2023.1192326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023] Open
Abstract
Pathogenic eukaryotes including fungi release extracellular vesicles (EVs) which are composed of a variety of bioactive components, including peptides, nucleic acids, polysaccharides, and membrane lipids. EVs contain virulence-associated molecules suggesting a crucial role of these structures in disease pathogenesis. EVs derived from the pathogenic yeast phase of Talaromyces (Penicillium) marneffei, a causative agent of systemic opportunistic mycoses "talaromycosis," were studied for their immunogenic components and immunomodulatory properties. Some important virulence factors in EVs including fungal melanin and yeast phase specific mannoprotein were determined by immunoblotting. Furthermore, fluorescence microscopy revealed that T. marneffei EVs were internalized by THP-1 human macrophages. Co-incubation of T. marneffei EVs with THP-1 human macrophages resulted in increased levels of supernatant interleukin (IL)-1β, IL-6 and IL-10. The expression of THP-1 macrophage surface CD86 was significantly increased after exposed to T. marneffei EVs. These findings support the hypothesis that fungal EVs play an important role in macrophage "classical" M1 polarization. T. marneffei EVs preparations also increased phagocytosis, suggesting that EV components stimulate THP-1 macrophages to produce effective antimicrobial compounds. In addition, T. marneffei EVs stimulated THP-1 macrophages were more effective at killing T. marneffei conidia. These results indicate that T. marneffei EVs can potently modulate macrophage functions, resulting in the activation of these innate immune cells to enhance their antimicrobial activity.
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Affiliation(s)
- Kritsada Pruksaphon
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Artid Amsri
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Patcharin Thammasit
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Joshua D. Nosanchuk
- Department of Medicine (Division of Infectious Diseases) and Department of Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY, United States
| | - Sirida Youngchim
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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16
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Chen X, Hao X, Akhberdi O, Zhu X. Genomic and Transcriptomic Survey Provides Insights into Molecular Basis of Pathogenicity of the Sunflower Pathogen Phoma macdonaldii. J Fungi (Basel) 2023; 9:jof9050520. [PMID: 37233231 DOI: 10.3390/jof9050520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Phoma macdonaldii (teleomorph Leptosphaeria lindquistii) is the causal agent of sunflower (Helianthus annuus L.) black stem. In order to investigate the molecular basis for the pathogenicity of P. ormacdonaldii, genomic and transcriptomic analyses were performed. The genome size was 38.24 Mb and assembled into 27 contigs with 11,094 putative predicted genes. These include 1133 genes for CAZymes specific for plant polysaccharide degradation, 2356 for the interaction between the pathogen and host, 2167 for virulence factors, and 37 secondary metabolites gene clusters. RNA-seq analysis was conducted at the early and late stages of the fungal spot formation in infected sunflower tissues. A total of 2506, 3035, and 2660 differentially expressed genes (DEGs) between CT and each treatment group (LEAF-2d, LEAF-6d, and STEM) were retrieved, respectively. The most significant pathways of DEGs from these diseased sunflower tissues were the metabolic pathways and biosynthesis of secondary metabolites. Overall, 371 up-regulated DEGs were shared among LEAF-2d, LEAF-6d, and STEM, including 82 mapped to DFVF, 63 mapped to PHI-base, 69 annotated as CAZymes, 33 annotated as transporters, 91 annotated as secretory proteins, and a carbon skeleton biosynthetic gene. The most important DEGs were further confirmed by RT-qPCR. This is the first report on the genome-scale assembly and annotation for P. macdonaldii. Our data provide a framework for further revealing the underlying mechanism of the pathogenesis of P. macdonaldii, and also suggest the potential targets for the diseases caused by this fungal pathogen.
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Affiliation(s)
- Xuejing Chen
- College of Biological and Geography Sciences, Yili Normal University, Yining 835000, China
| | - Xiaoran Hao
- National Experimental Teaching Demonstrating Center, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Oren Akhberdi
- Key Laboratory of Microbial Resources Protection, Development and Utilization, Yili Normal University, Yining 835000, China
| | - Xudong Zhu
- Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology, College of Life Sciences, Beijing Normal University, Beijing 100875, China
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17
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Kornsakulkarn J, Auncharoen P, Khonsanit A, Boonyuen N, Thongpanchang C. Cytotoxic cytochalasans from cultures of the fungus Metarhizium brunneum TBRC-BCC 79240. RSC Adv 2023; 13:10564-10576. [PMID: 37025662 PMCID: PMC10071300 DOI: 10.1039/d3ra00042g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/28/2023] [Indexed: 04/08/2023] Open
Abstract
Fourteen new cytochalasans, brunnesins A-N (1-14), along with eleven known compounds, were isolated from the culture extracts of the insect pathogenic fungus Metarhizium brunneum strain TBRC-BCC 79240. The compound structures were established by spectroscopy, X-ray diffraction analysis, and electronic circular dichroism. Compound 4 exhibited antiproliferative activity against all cell lines tested (mammalian), with 50% inhibition concentration (IC50) values ranging from 2.09 to 16.8 μg mL-1. Compounds 6 and 16 were shown to be bioactive only against non-cancerous Vero cells (IC50 4.03 and 0.637 μg mL-1, respectively) whereas compounds 9 and 12 were bioactive only against NCI-H187 small-cell lung cancer cells (IC50 18.59 and 18.54 μg mL-1, respectively). Compounds 7, 13, and 14 showed cytotoxicity against NCI-H187 and Vero cell lines with IC50 values ranging from 3.98-44.81 μg mL-1.
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Affiliation(s)
- Jittra Kornsakulkarn
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang Pathum Thani 12120 Thailand
| | - Patchanee Auncharoen
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang Pathum Thani 12120 Thailand
| | - Artit Khonsanit
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang Pathum Thani 12120 Thailand
| | - Nattawut Boonyuen
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang Pathum Thani 12120 Thailand
| | - Chawanee Thongpanchang
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang Pathum Thani 12120 Thailand
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18
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Yang Z, Liu H, Su Z, Xu H, Yuan Z, Rao Y. Enhanced production of aspochalasin D through genetic engineering of Aspergillus flavipes. Appl Microbiol Biotechnol 2023; 107:2911-2920. [PMID: 37004567 DOI: 10.1007/s00253-023-12501-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/09/2023] [Accepted: 03/23/2023] [Indexed: 04/04/2023]
Abstract
Aspochalasin D (AD) belongs to the polyketide-amino acid hybrid natural products with anti-cancer, anti-bacterial, and anti-fouling bioactivities. However, the low production limits its further application. In this study, AD was separated and identified from Aspergillus flavipes 3.17641. Next, besides the optimization of culture conditions using a single-factor experiment and response surface methodology, metabolic engineering was employed to increase the AD production. It shows that the deletion of the shunt gene aspoA and overexpression of the pathway-specific regulator aspoG significantly improve the AD production. Its production reached to 812.1 mg/L under the optimized conditions, with 18.5-fold increase. Therefore, this study not only provides a general method for improving the production of similar natural products in other fungi, but also enables the further biological function development of AD in agriculture and pharmaceutical. KEY POINTS: • The Aspochalasin D (AD) production was improved by optimizing culture conditions. • The deletion of the shunt gene aspoA increased the AD production. • Overexpression of the pathway regulator aspoG further improved the AD production.
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Affiliation(s)
- Zhaopeng Yang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Huiling Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zengping Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Huibin Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zhenbo Yuan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China.
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19
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Yang H, Liang Z, Xie J, Wu Q, Qin Y, Zhang S, Tang G. Gelsolin inhibits autophagy by regulating actin depolymerization in pancreatic ductal epithelial cells in acute pancreatitis. Braz J Med Biol Res 2023; 56:e12279. [PMID: 36722658 PMCID: PMC9883008 DOI: 10.1590/1414-431x2023e12279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/20/2022] [Indexed: 02/02/2023] Open
Abstract
Gelsolin (GSN) can sever actin filaments associated with autophagy. This study investigated how GSN-regulated actin filaments control autophagy in pancreatic ductal epithelial cells (PDECs) in acute pancreatitis (AP). AP was produced in a rat model and PDECs using caerulein (CAE). Rat pancreatic duct tissue and HPDE6-C7 cells were extracted at 6, 12, 24, and 48 h after CAE treatment. HPDE6-C7 cells in the presence of CAE were treated with cytochalasin B (CB) or silenced for GSN for 24 h. Pancreatic histopathology and serum amylase levels were analyzed. Cellular ultrastructure and autophagy in PDECs were observed by transmission electron microscopy after 24 h of CAE treatment. The expression of GSN and autophagy markers LC3, P62, and LAMP2 was evaluated in PDECs by immunohistochemistry and western blotting. Actin filaments were observed microscopically. Amylase levels were highest at 6 h of AP, and pancreatic tissue damage increased over time. Mitochondrial vacuolization and autophagy were observed in PDECs. CAE increased GSN expression in these cells over time, increased the LC3-II/LC3-I ratio and LAMP2 expression at 24 and 6 h of treatment, respectively, and decreased P62 expression at all time points. CB treatment for 24 h decreased the LC3-II/LC3-I ratio and LAMP2 expression, increased P62 levels, but had no impact on GSN expression in CAE-treated PDECs. CAE induced actin depolymerization, and CB potentiated this effect. GSN silencing increased the LC3-II/LC3-I ratio and LAMP2 expression and reduced actin depolymerization in CAE-treated PDECs. GSN may inhibit autophagosome biogenesis and autophagosome-lysosome fusion by increasing actin depolymerization in PDECs in AP.
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Affiliation(s)
- Huiying Yang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhihai Liang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jinlian Xie
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qing Wu
- Department of Gastroenterology, Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yingying Qin
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Shiyu Zhang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Guodu Tang
- Department of Gastroenterology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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20
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Kemkuignou BM, Lambert C, Schmidt K, Schweizer L, Anoumedem EGM, Kouam SF, Stadler M, Stradal T, Marin-Felix Y. Unreported cytochalasins from an acid-mediated transformation of cytochalasin J isolated from Diaporthe cf. ueckeri. Fitoterapia 2023; 166:105434. [PMID: 36681097 DOI: 10.1016/j.fitote.2023.105434] [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: 11/16/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 01/20/2023]
Abstract
Chemical investigation of an endophytic fungus herein identified as Diaporthe cf. ueckeri yielded four known compounds, named cytochalasins H and J and dicerandrols A and B. Reports of acid sensitivity within the cytochalasan family inspired an attempt of acid-mediated conversion of cytochalasins H and J, resulting in the acquisition of five polycyclic cytochalasins featuring 5/6/5/8-fused tetracyclic and 5/6/6/7/5-fused pentacyclic skeletons. Two of the obtained polycyclic cytochalasins constituted unprecedented analogues, for which the trivial names cytochalasins J4 and J5 were proposed, whereas the others were identified as the known phomopchalasin A, phomopchalasin D and 21-acetoxycytochalasin J3. The structures of the compounds were determined by extensive spectral analysis, namely HR-ESIMS, ESIMS and 1D/2D NMR. The stereochemistry of cytochalasins J4 and J5 was proposed using their ROESY data, biosynthetic and mechanistic considerations and by comparison of their ECD spectra with those of related congeners. All compounds except for cytochalasins H and J were tested for antimicrobial and cytotoxic activity. Cytochalasins J4 and J5 showed neither antimicrobial nor cytotoxic activity in the tested concentrations, with only weak antiproliferative activity observable against KB3.1 cells. The actin disruptive properties of all cytochalasins obtained in this study and of the previously reported cytochalasins RKS-1778 and phomopchalasin N were examined, and monitored by fluorescence microscopy using human osteo-sarcoma (U2-OS) cells. Compared to their precursor molecules (cytochalasins H and J), phomopchalasins A and D, 21-acetoxycytochalasin J3, cytochalasins J4 and J5 revealed a strongly reduced activity on the F-actin network, highlighting that the macrocyclic ring is crucial for bioactivity.
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Affiliation(s)
- Blondelle Matio Kemkuignou
- Department of Microbial Drugs, Helmholtz Centre for Infection Research (HZI) and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany; Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany
| | - Christopher Lambert
- Department of Microbial Drugs, Helmholtz Centre for Infection Research (HZI) and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany; Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Katharina Schmidt
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Lena Schweizer
- Department of Microbial Drugs, Helmholtz Centre for Infection Research (HZI) and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Elodie Gisèle M Anoumedem
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, P.O. Box 47, Cameroon
| | - Simeon F Kouam
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, P.O. Box 47, Cameroon
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research (HZI) and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany; Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany
| | - Theresia Stradal
- Department of Cell Biology, Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Yasmina Marin-Felix
- Department of Microbial Drugs, Helmholtz Centre for Infection Research (HZI) and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany; Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany.
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21
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Hinterdobler W, Bacher M, Shi BB, Baurecht D, Krisai-Greilhuber I, Schmoll M, Brecker L, Valant-Vetschera K, Schinnerl J. New cytochalasans from an endophytic Xylaria species associated with Costa Rican Palicourea elata (Rubiaceae). Nat Prod Res 2023; 37:85-92. [PMID: 34311632 DOI: 10.1080/14786419.2021.1956490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Four new leucine-derived cytochalasans, possessing a 5,6,5,8-ring (1) and a 5,6,11-ring core (2-4), were isolated from a cultivated endophytic fungus Xylaria sp. strain WH2D4 (Xylariaceae). This fungus was isolated from leaves of the neotropical tree species Palicourea elata (Sw.) Borhidi (Rubiaceae) collected in Costa Rica. The chemical structures were determined by employing IR, MS as well as 1D- and 2D-NMR experiments. The stereochemistry at C-15 of compound 4 was determined by quantum calculations. The isolated compounds did not affect germination and growth of Trichoderma reesei and the opportunistic human fungal pathogen T. longibrachiatum.
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Affiliation(s)
- Wolfgang Hinterdobler
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria.,AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Tulln, Austria
| | - Markus Bacher
- Department of Chemistry, Division of Chemistry of Renewables, University of Natural Resources and Life Sciences (BOKU), Tulln, Austria
| | - Bao-Bao Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Dieter Baurecht
- Department of Physical Chemistry, University of Vienna, Vienna, Austria
| | | | - Monika Schmoll
- AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Tulln, Austria
| | - Lothar Brecker
- Department of Organic Chemistry, University of Vienna, Vienna, Austria
| | | | - Johann Schinnerl
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
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22
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Peng X, Ouyang Q, Pei J, Chang J, Qin C, Ruan H. TRAIL-sensitizing Cytochalasins from the Endophytic Fungus Phoma multirostrata. PLANTA MEDICA 2022; 88:1299-1310. [PMID: 35100652 DOI: 10.1055/a-1755-5411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Seven undescribed cytochalasins, multirostratins K - Q (2: -8: ), together with one known analogue, cytochalasin Z3 (1: ), were isolated from the culture of Phoma multirostrata XJ-2-1, an endophytic fungus obtained from the root of Parasenecio albus. Their structures with absolute configurations were determined by 1D and 2D NMR, high-resolution electrospray ionization mass spectrometry (HRESIMS), electronic circular dichroism (ECD), single-crystal X-ray crystallography, and chemical methods. The structure of ascochalasin was revised from Δ 13 to Δ 21 by detailed analysis of the NMR data and by comparison with the data for 7: . In a TRAIL (tumor necrosis factor related apoptosis inducing ligand)-resistance-overcoming experiment, co-treatment of 2: or 6: with TRAIL reduced the cell viability of A549 cells by 30.3% and 27.5% at 10 µM, respectively.
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Affiliation(s)
- Xiaogang Peng
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Qianxi Ouyang
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Jiao Pei
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Jinling Chang
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Chunlun Qin
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Hanli Ruan
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
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23
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Gao Y, Mao R, Liu Y, Zhou M, Ruan H. Cytochalasan Alkaloids as TRAIL Sensitizers from an Endophytic Fungus Chaetomium sp. PLANTA MEDICA 2022; 88:1293-1298. [PMID: 34963184 DOI: 10.1055/a-1728-4963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Two new cytochalasans with a rare 6/6/5/5/7 pentacyclic ring system, named chaetoconvosins C-D (1: -2: ), together with two known congeners (3: -4: ), were isolated from the fermentation of an endophytic fungus, Chaetomium sp. SG-01, harbored in the fibrous roots of Schisandra glaucescens Diels. Their structures including the absolute configuration were elucidated by extensive spectroscopic (HRESIMS, NMR, and ECD) and X-ray crystallographic analyses. The TRAIL-resistance-overcoming activity of 1: -4: in a TRAIL-resistant HT29 colorectal cancer cell line was evaluated, which revealed that co-treatment of 1: -4: at 50 µM with TRAIL (150 ng/mL) reduced the HT29 cell viability by 19.0%, 24.1%, 17.9%, and 15.5%, respectively, compared to treatment with 1: -4: alone.
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Affiliation(s)
- Ying Gao
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
| | - Ruihua Mao
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
- Department of Pharmacy, Tongji Hospital Affiliated Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Ye Liu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Ming Zhou
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Hanli Ruan
- School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan, People's Republic of China
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24
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Jiang M, Yang Q, Wang H, Luo Z, Guo Y, Shi J, Wang X, Qiang S, Strasser RJ, Chen S. Effect of Mycotoxin Cytochalasin A on Photosystem II in Ageratina adenophora. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11202797. [PMID: 36297819 PMCID: PMC9609670 DOI: 10.3390/plants11202797] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 05/12/2023]
Abstract
Biological herbicides have received much attention due to their abundant resources, low development cost, unique targets and environmental friendliness. This study reveals some interesting effects of mycotoxin cytochalasin A (CA) on photosystem II (PSII). Our results suggested that CA causes leaf lesions on Ageratina adenophora due to its multiple effects on PSII. At a half-inhibitory concentration of 58.5 μΜ (I50, 58.5 μΜ), the rate of O2 evolution of PSII was significantly inhibited by CA. This indicates that CA possesses excellent phytotoxicity and exhibits potential herbicidal activity. Based on the increase in the J-step of the chlorophyll fluorescence rise OJIP curve and the analysis of some JIP-test parameters, similar to the classical herbicide diuron, CA interrupted PSII electron transfer beyond QA at the acceptor side, leading to damage to the PSII antenna structure and inactivation of reaction centers. Molecular docking model of CA and D1 protein of A. adenophora further suggests that CA directly targets the QB site of D1 protein. The potential hydrogen bonds are formed between CA and residues D1-His215, D1-Ala263 and D1-Ser264, respectively. The binding of CA to residue D1-Ala263 is novel. Thus, CA is a new natural PSII inhibitor. These results clarify the mode of action of CA in photosynthesis, providing valuable information and potential implications for the design of novel bioherbicides.
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Affiliation(s)
- Mengyun Jiang
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Qian Yang
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - He Wang
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhi Luo
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanjing Guo
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiale Shi
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoxiong Wang
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Sheng Qiang
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
| | - Reto Jörg Strasser
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
- Bioenergetics Laboratory, University of Geneva, CH-1254 Geneva, Switzerland
| | - Shiguo Chen
- Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China
- Correspondence:
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25
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Valli M, Souza JM, Chelucci RC, Biasetto CR, Araujo AR, Bolzani VDS, Andricopulo AD. Identification of natural cytochalasins as leads for neglected tropical diseases drug discovery. PLoS One 2022; 17:e0275002. [PMID: 36190979 PMCID: PMC9529094 DOI: 10.1371/journal.pone.0275002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/15/2022] [Indexed: 11/19/2022] Open
Abstract
Investigating the chemical diversity of natural products from tropical environments is an inspiring approach to developing new drug candidates for neglected tropical diseases (NTDs). In the present study, phenotypic screenings for antiprotozoal activity and a combination of computational and biological approaches enabled the identification and characterization of four cytochalasins, which are fungal metabolites from Brazilian biodiversity sources. Cytochalasins A-D exhibited IC50 values ranging from 2 to 20 μM against intracellular Trypanosoma cruzi and Leishmania infantum amastigotes, values comparable to those of the standard drugs benznidazole and miltefosine for Chagas disease and leishmaniasis, respectively. Furthermore, cytochalasins A-D reduced L. infantum infections by more than 80% in THP-1 cells, most likely due to the inhibition of phagocytosis by interactions with actin. Molecular modelling studies have provided useful insights into the mechanism of action of this class of compounds. Furthermore, cytochalasins A-D showed moderate cytotoxicity against normal cell lines (HFF-1, THP-1, and HepG2) and a good overall profile for oral bioavailability assessed in vitro. The results of this study support the use of natural products from Brazilian biodiversity sources to find potential drug candidates for two of the most important NTDs.
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Affiliation(s)
- Marilia Valli
- Laboratory of Medicinal and Computational Chemistry (LQMC), Centre for Research and Innovation in Biodiversity and Drug Discovery (CIBFar), São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
- * E-mail: (ADA); (MV)
| | - Julia Medeiros Souza
- Laboratory of Medicinal and Computational Chemistry (LQMC), Centre for Research and Innovation in Biodiversity and Drug Discovery (CIBFar), São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
| | - Rafael Consolin Chelucci
- Laboratory of Medicinal and Computational Chemistry (LQMC), Centre for Research and Innovation in Biodiversity and Drug Discovery (CIBFar), São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
| | - Carolina Rabal Biasetto
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Angela Regina Araujo
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Vanderlan da Silva Bolzani
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Adriano Defini Andricopulo
- Laboratory of Medicinal and Computational Chemistry (LQMC), Centre for Research and Innovation in Biodiversity and Drug Discovery (CIBFar), São Carlos Institute of Physics (IFSC), University of São Paulo (USP), São Carlos, SP, Brazil
- * E-mail: (ADA); (MV)
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26
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Bioactive Metabolite Production in the Genus Pyrenophora (Pleosporaceae, Pleosporales). Toxins (Basel) 2022; 14:toxins14090588. [PMID: 36136526 PMCID: PMC9503419 DOI: 10.3390/toxins14090588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 12/26/2022] Open
Abstract
The genus Pyrenophora includes two important cereal crop foliar pathogens and a large number of less well-known species, many of which are also grass pathogens. Only a few of these have been examined in terms of secondary metabolite production, yet even these few species have yielded a remarkable array of bioactive metabolites that include compounds produced through each of the major biosynthetic pathways. There is little overlap among species in the compounds identified. Pyrenophora tritici-repentis produces protein toxin effectors that mediate host-specific responses as well as spirocyclic lactams and at least one anthraquinone. Pyrenophora teres produces marasmine amino acid and isoquinoline derivatives involved in pathogenesis on barley as well as nonenolides with antifungal activity, while P. semeniperda produces cytochalasans and sesquiterpenoids implicated in pathogenesis on seeds as well as spirocyclic lactams with phytotoxic and antibacterial activity. Less well-known species have produced some unusual macrocyclic compounds in addition to a diverse array of anthraquinones. For the three best-studied species, in silico genome mining has predicted the existence of biosynthetic pathways for a much larger array of potentially toxic secondary metabolites than has yet been produced in culture. Most compounds identified to date have potentially useful biological activity.
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27
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Kobayashi K, Matsuda D, Tomoda H, Ohshiro T. Binding of phenochalasin A, an inhibitor of lipid droplet formation in mouse macrophages, on G-actin. Drug Discov Ther 2022; 16:148-153. [PMID: 36002309 DOI: 10.5582/ddt.2022.01053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Phenochalasin A, a unique phenol-containing cytochalasin produced by the marine-derived fungus Phomopsis sp. FT-0211, was originally discovered in a cell morphological assay of observing the inhibition of lipid droplet formation in mouse peritoneal macrophages. To investigate the mode of action and binding proteins, phenochalasin A was radio-labeled by 125I. Iodinated phenochalasin A exhibited the same biological activity as phenochalasin A. [125I]Phenochalasin A was found to be associated with an approximately 40 kDa protein, which was identified as G-actin. Furthermore, detail analyses of F-actin formation in Chinese hamster ovary cells (CHO-K1 cells) indicated that phenochalasin A (2 µM) caused elimination of F-actin formation on the apical site of the cells, suggesting that actin-oriented specific function(s) in cytoskeletal processes are affected by phenochalasin A.
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Affiliation(s)
- Keisuke Kobayashi
- Department of Microbial Chemistry, Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Daisuke Matsuda
- Department of Microbial Chemistry, Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan
| | - Hiroshi Tomoda
- Department of Microbial Chemistry, Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.,Laboratory of Drug Discovery, Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan
| | - Taichi Ohshiro
- Department of Microbial Chemistry, Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.,Medicinal Research Laboratories, School of Pharmacy, Kitasato University, Tokyo, Japan
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28
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Kushwaha M, Qayum A, Sharma N, Abrol V, Choudhary P, Murtaza M, Singh SK, Vishwakarma RA, Goutam U, Jain SK, Jaglan S. LC-PDA-MS/MS-Based Dereplication Guided Isolation of a New Optical Isomer of 19,20-Epoxycytochalasin-N and Its Cytotoxic Activity. ACS OMEGA 2022; 7:29135-29141. [PMID: 36033687 PMCID: PMC9404496 DOI: 10.1021/acsomega.2c03037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The Rosellinia sanctae-cruciana extract was subjected to detailed liquid chromatography tandem mass spectrometry studies. A total of 38 peaks were annotated to m/z 508.26, m/z 510.28, m/z 524.26, m/z 526.28, m/z 540.26, m/z 542.27, and m/z 584.28 [M + H]+. The accurate mass, mutually supported UV/vis spectra, and database search identified these compounds as cytochalasins. Systematic dereplication helped identify a peak at m/z 540.26 [M + H]+ as the new compound. Further, the identified compound was purified by high-performance liquid chromatography and characterized by 2D NMR to be 19,20-epoxycytochalasin N1, a new optical isomer of 19,20-epoxycytochalasin-N. It exhibited substantial cytotoxicity with IC50 values ranging from 1.34 to 19.02 μM. This study shows a fast approach for dereplicating and identifying novel cytochalasin metabolites in crude extracts.
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Affiliation(s)
- Manoj Kushwaha
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Department
of Biotechnology, Guru Nanak Dev University, Amritsar 143001, Punjab, India
| | - Arem Qayum
- Cancer
Pharmacology Division, Indian Institute
of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research, Jammu Campus, Jammu 180001, India
| | - Nisha Sharma
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Department
of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Vidushi Abrol
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
| | - Poonam Choudhary
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
| | - Mohd Murtaza
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research, Jammu Campus, Jammu 180001, India
| | - Shashank K. Singh
- Cancer
Pharmacology Division, Indian Institute
of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research, Jammu Campus, Jammu 180001, India
| | - Ram A. Vishwakarma
- Medicinal
Chemistry Division, Indian Institute of
Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
| | - Umesh Goutam
- Department
of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Shreyans K. Jain
- Department
of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Sundeep Jaglan
- Fermentation
& Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research, Jammu Campus, Jammu 180001, India
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29
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Zhao S, Lin C, Cheng M, Zhang K, Wang Z, Zhao T, Yang Q. New insight into the production improvement and resource generation of chaetoglobosin A in Chaetomium globosum. Microb Biotechnol 2022; 15:2562-2577. [PMID: 35930651 PMCID: PMC9518988 DOI: 10.1111/1751-7915.14111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 05/23/2022] [Accepted: 06/14/2022] [Indexed: 12/03/2022] Open
Abstract
Chaetoglobosin A is a complex macrocyclic alkaloid with potent antimycotic, antiparasitic and antitumor properties. However, the low output and high cost of chaetoglobosin A biosynthesis have hampered the application and commercialization of chaetoglobosin A in agriculture and biomedicine. Here, the CgMfs1 gene, which encodes the major facilitator superfamily secondary transporter, was identified based on bioinformatics analysis, and an intensive study of its effects on chaetoglobosin A biosynthesis and secretion was performed using CgMfs1‐silencing and CgMfs1‐overexpression strategies. Inactivation of CgMfs1 caused a notable decrease in chaetoglobosin A yield from 58.66 mg/L to 19.95 mg/L (MFS1–3) and 17.13 mg/L (MFS1–4). The use of an efficient expression plasmid in Chaetomium globosum W7 to generate the overexpression mutant OEX13 resulted in the highest chaetoglobosin A increase to 298.77 mg/L. Interestingly, the transcription level of the polyketide synthase gene significantly fluctuated with the change in CgMfs1, confirming that the predicted efflux gene CgMfs1 could play a crucial role in chaetoglobosin A transportation. Effective efflux of chaetoglobosin A could possibly alleviate feedback inhibition, resulting in notable increase in the expression of the polyketide synthase gene. Furthermore, we utilized cornstalk as the fermentation substrate to produce chaetoglobosin A, and scanning electron microscopy and Fourier transform‐infrared spectroscopy revealed that the strain OEX13 could well degrade cornstalk, presenting significant increases in the chaetoglobosin A yield, when compared with that produced by the wild‐type strain (from 40.32 to 191.90 mg/L). Thus, this research provides a novel analogous engineering strategy for the construction of high‐yielding strain and offers new insight into large‐scale chaetoglobosin A production.
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Affiliation(s)
- Shanshan Zhao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Congyu Lin
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Ming Cheng
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Kai Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Zhengran Wang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Tong Zhao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Qian Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, China
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30
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Zhang AX, Feng L, Wang J, Tan NH, Wang Z. Rubichaetoglobin A, a new cytochalasan alkaloid isolated from the plant endophytic fungus Chaetomium tectifimeti S104. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2022; 24:769-776. [PMID: 34581233 DOI: 10.1080/10286020.2021.1974407] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Rubichaetoglobin A (1), a new cytochalasan alkaloid, together with nine closely related known ones (2-10), were isolated from the ethyl acetate extracts of the endophytic fungus Chaetomium tectifimeti S104 harbored in the root of Rubia podantha Diels. Their structures were elucidated based on comprehensive spectroscopic analysis. All isolated compounds were tested for cytotoxic, antibacterial, and nitric oxide inhibitory activities. The results showed that 2, 4, and 5 possessed moderate cytotoxicity against MDA-MB-231 cells with the IC50 values of 19.14, 11.43, and 10.27 μM, respectively.
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Affiliation(s)
- An-Xin Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Jing Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
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31
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Studies on the secondary metabolism of Rosellinia and Dematophora strains (Xylariaceae) from Iran. Mycol Prog 2022. [DOI: 10.1007/s11557-022-01816-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractThe xylariaceous genus Dematophora has recently been resurrected and segregated from Rosellinia based on a molecular phylogeny and morphological characters. This was an important taxonomic change because Dematophora in the current sense contains several important pathogens, while Rosellinia is limited to mainly saprotrophic species that have an endophytic stage in their life cycle and may even have beneficial effects on the host plants. During our ongoing work on the functional biodiversity of the Xylariales, we have encountered new strains of rosellinoid Xylariaceae from Iran and have studied their mycelial cultures for secondary metabolites in an attempt to establish further chemotaxonomic affinities. In the process, we isolated and identified 13 compounds, of which rosellisteroid (1), the cichorine derivative 2, and the alkaloid 3 are new. Out of these, nine were tested for their antimicrobial affinities with cytochalasin E (6) exhibiting weak activity against Schizosaccharomyces pombe. The cytotoxicity of three cytochalasin derivatives was examined and their effects on the F-actin cytoskeletal organization studied by fluorescence microscopy using fluorescent phalloidin. Cytochalasin E (6) and Δ6,12-cytochalasin E (7) showed strong and irreversible action on actin, while cytochalasin K (8) exhibited weaker, reversible effects.
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Hu XY, Li XM, Yang SQ, Wang BG, Meng LH. New Cytochalasin Derivatives from Deep-Sea Cold Seep-Derived Endozoic Fungus Curvularia verruculosa CS-129. Chem Biodivers 2022; 19:e202200550. [PMID: 35727302 DOI: 10.1002/cbdv.202200550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 06/21/2022] [Indexed: 11/10/2022]
Abstract
Two new antimicrobial cytochalasin derivatives, 6 β , 7 β -epoxydeoxaphomin C ( 1 ) and 12-hydroxydeoxaphomin C ( 2 ), a new natural occurring product 24-nor-cytochalasin B ( 3 ), together with two related known analogues ( 4 - 5 ) were isolated and identified from an endozoic fungus Curvularia verruculosa CS-129, isolated from the deep-sea squat lobster Shinkaia crosnieri which was collected in cold seep region of south China sea. The structures of new compounds were elucidated on the basis of detailed spectroscopic analysis and ECD calculation. The spectroscopic data of 24-nor-cytochalasin B ( 3 ) were reported for the first time. All compounds were tested for their antibacterial activities against human and aquatic pathogenic bacteria.
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Affiliation(s)
- Xue-Yi Hu
- Institute of Oceanology Chinese Academy of Sciences, CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Nanhai Road 7, 266071, Qingdao, CHINA
| | - Xiao-Ming Li
- Institute of Oceanology Chinese Academy of Sciences, CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Nanhai Road 7, 266071, Qingdao, CHINA
| | - Sui-Qun Yang
- Institute of Oceanology Chinese Academy of Sciences, CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Nanhai Road 7, 266071, Qingdao, CHINA
| | - Bin-Gui Wang
- Institute of Oceanology of the Chinese Academy of Sciences, Key Laboratory of Experimental Marine Biology, Nanhai Road 7, 266071, Qingdao, CHINA
| | - Ling-Hong Meng
- Institute of Oceanology Chinese Academy of Sciences, CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Nanhai Road 7, 266071, Qingdao, CHINA
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Tian Y, Li Y. A Review on Bioactive Compounds from Marine-Derived Chaetomium Species. J Microbiol Biotechnol 2022; 32:541-550. [PMID: 35586928 PMCID: PMC9628867 DOI: 10.4014/jmb.2201.01007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/28/2022] [Accepted: 05/02/2022] [Indexed: 12/15/2022]
Abstract
Filamentous marine fungi have proven to be a plentiful source of new natural products. Chaetomium, a widely distributed fungal genus in the marine environment, has gained much interest within the scientific community. In the last 20 years, many potential secondary metabolites have been detected from marine-derived Chaetomium. In this review, we attempt to provide a comprehensive summary of the natural products produced by marine-derived Chaetomium species. A total of 122 secondary metabolites that were described from 2001 to 2021 are covered. The structural diversity of the compounds, along with details of the sources and relevant biological properties are also provided, while the relationships between structures and their bioactivities are discussed. It is our expectation that this review will be of benefit to drug development and innovation.
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Affiliation(s)
- Yuan Tian
- College of Life Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, P.R. China,Corresponding authors Yuan Tian E-mail:
| | - Yanling Li
- College of Life Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, P.R. China,
Yanling Li E-mail:
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Antiproliferative and Cytotoxic Cytochalasins from Sparticola triseptata Inhibit Actin Polymerization and Aggregation. J Fungi (Basel) 2022; 8:jof8060560. [PMID: 35736043 PMCID: PMC9225350 DOI: 10.3390/jof8060560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/17/2022] [Accepted: 05/20/2022] [Indexed: 02/08/2023] Open
Abstract
Laying the groundwork on preliminary structure–activity relationship study relating to the disruptive activity of cytochalasan derivatives on mammalian cell actin cytoskeleton, we furthered our study on the cytochalasans of the Dothideomycetes fungus, Sparticola triseptata. A new cytochalasan analog triseptatin (1), along with the previously described cytochalasans deoxaphomin B (2) and cytochalasin B (3), and polyketide derivatives cis-4-hydroxy-6-deoxyscytalone (4) and 6-hydroxymellein (5) were isolated from the rice culture of S. triseptata. The structure of 1 was elucidated through NMR spectroscopic analysis and high-resolution mass spectrometry (HR-ESI-MS). The relative and absolute configurations were established through analysis of NOESY spectroscopic data and later correlated with experimental electronic circular dichroism and time-dependent density functional theory (ECD–TDDFT) computational analysis. Compounds 1 and 2 showed cytotoxic activities against seven mammalian cell lines (L929, KB3.1, MCF-7, A549, PC-3, SKOV-3, and A431) and antiproliferative effects against the myeloid leukemia K-562 cancer cell line. Both 1 and 2 were shown to possess properties inhibiting the F-actin network, prompting further hypotheses that should to be tested in the future to enable a well-resolved concept of the structural implications determining the bioactivity of the cytochalasin backbone against F-actin.
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Yan BC, Wang WG, Kong LM, Tang JW, Du X, Li Y, Puno PT. Cytochalasans from the Endophytic Fungus Phomopsis sp. shj2 and Their Antimigratory Activities. J Fungi (Basel) 2022; 8:jof8050543. [PMID: 35628798 PMCID: PMC9143583 DOI: 10.3390/jof8050543] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 02/04/2023] Open
Abstract
Cytochalasans from the endophytic fungi featured structure diversity. Our previous study has disclosed that cytochalasans from the endophytic fungus Phomopsis sp. shj2 exhibited an antimigratory effect. Further chemical investigation on Phomopsis sp. shj2 has led to the discovery of seven new cytochalasans (1–7), together with four known ones. Their structures were elucidated through extensive spectroscopic data interpretation and single-crystal X-ray diffraction analysis. Compounds 1–3 and 8–11 exhibited antimigratory effects against MDA-MB-231 in vitro with IC50 values in the range of 1.01−10.42 μM.
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Affiliation(s)
- Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
| | - Ling-Mei Kong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
| | - Jian-Wei Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (B.-C.Y.); (W.-G.W.); (L.-M.K.); (J.-W.T.); (X.D.); (Y.L.)
- Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence:
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Peng X, Liu J, Qin C, Wu Q, Li W, Mohammadipanah F, Ruan H. Ergochaeglobosins A−E, Unprecedented Heterodimers of Cytochalasan and Ergosterol from
Chaeglobosin globosum
P2‐2‐2. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaogang Peng
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
| | - Junjun Liu
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
| | - Chunlun Qin
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
| | - Qian Wu
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
| | - Wanpeng Li
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
| | - Fatemeh Mohammadipanah
- Pharmaceutical Biotechnology Lab School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran 14155‐6455 Tehran Iran
| | - Hanli Ruan
- School of Pharmacy, Tongji Medical College Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Wuhan 430030 China
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Hu X, Li X, Yang S, Li X, Wang B, Meng L. Vercytochalasins A and B: Two unprecedented biosynthetically related cytochalasins from the deep-sea-sourced endozoic fungus Curvularia verruculosa. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Miao S, Liu M, Qi S, Wu Y, Sun K, Zhang Z, Zhu K, Cai G, Gong K. Cytochalasins from coastal saline soil-derived fungus Aspergillus flavipes RD-13 and their cytotoxicities. J Antibiot (Tokyo) 2022; 75:410-414. [PMID: 35459857 DOI: 10.1038/s41429-022-00527-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 04/06/2022] [Accepted: 04/06/2022] [Indexed: 12/26/2022]
Abstract
Chemical investigation of coastal saline soil-derived fungus Aspergillus flavipes RD-13 led to the isolation of two new seco-cytochalasins (1) and (2) along with nine known analogs. Their structures were elucidated by comprehensive spectral analysis, and the absolute configurations of these two new ones were determined through Rh2(OCOCF3)4-induced CD experiment and chemical interconversions. Moreover, the absolute configuration of a known compound named cytochalasins Z18 (3) was also determined for the first time. Structurally, compounds 1, 2 and 3 were the open ring derivatives of compounds 5, 8, and 4, respectively. All compounds were evaluated for their cytotoxic activities on A549, H1299 and H520 cells and 4 exhibited the strongest inhibitory activities towards the above cell lines with IC50 values of 0.15, 0.23 and 0.43 μg/mL, respectively. Preliminary structure-activity relationship analysis suggested the importance of macrocyclic ring in cytochalasins to confer cytotoxicity.
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Affiliation(s)
- Shuang Miao
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China
| | - Mengshan Liu
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China
| | - Shizhou Qi
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China
| | - Yan Wu
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China
| | - Kunlai Sun
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan, 316022, China
| | - Zhen Zhang
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China
| | - Kongkai Zhu
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Guowei Cai
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China. .,Clinical Drug Trials Institution, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China.
| | - Kaikai Gong
- Medical Research Center, Binzhou Medical University Hospital, Yellow River Second Road 661, Binzhou, 256603, China.
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Lu Y, Zhang P, Chen H, Tong Q, Wang J, Li Q, Tian C, Yang J, Li S, Zhang Z, Yuan H, Xiang M. Cytochalasin Q exerts anti-melanoma effect by inhibiting creatine kinase B. Toxicol Appl Pharmacol 2022; 441:115971. [PMID: 35276125 DOI: 10.1016/j.taap.2022.115971] [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: 01/03/2022] [Revised: 02/24/2022] [Accepted: 03/03/2022] [Indexed: 10/18/2022]
Abstract
Due to the pivotal role of microfilament in cancer cells, targeting microfilaments with cytochalasins is considered a promising anticancer strategy. Here, we obtained cytochalasin Q (CQ) from Xylaria sp. DO1801, the endophytic fungi from the root of plant Damnacanthus officinarum, and discovered its anti-melanoma activity in vivo and in vitro attributing to microfilament depolymerization. Mechanistically, CQ directly bound to and inactivated creatine kinase B (CKB), an enzyme phosphorylating creatine to phosphocreatine (PCr) and regenerating ATP to cope with high energy demand, and then inhibited the creatine metabolism as well as cytosolic glycolysis in melanoma cells. Preloading PCr recovered ATP generation, reversed microfilament depolymerization and blunted anti-melanoma efficacy of CQ. Knockdown of CKB resulted in reduced ATP level, perturbed microfilament, inhibited proliferation and induced apoptosis, and manifested lower sensitivity to CQ. Further, we found that either CQ or CKB depletion suppressed the PI3K/AKT/FoxO1 pathway, whereas 740Y-P, a PI3K agonist, elevated protein expression of CKB suppressed by CQ. Taken together, our study highlights the significant anti-melanoma effect and proposes a PI3K/AKT/FoxO1/ CKB feedback circuit for the activity of CQ, opening new opportunities for current chemotherapy.
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Affiliation(s)
- Yi Lu
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Peng Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hongdan Chen
- Breast and Thyroid Surgical Department, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing 400014, China; Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qingyi Tong
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jia Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qing Li
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Cheng Tian
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jian Yang
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Senlin Li
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zijun Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Huimin Yuan
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ming Xiang
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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40
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Peng X, Chang J, Gao Y, Duan F, Ruan H. Thiocytochalasins A−D, four sulfur-containing cytochalasans from an endophytic fungus Phoma multirostrata XJ-2-1. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Properties and Mechanisms of Flavin-Dependent Monooxygenases and Their Applications in Natural Product Synthesis. Int J Mol Sci 2022; 23:ijms23052622. [PMID: 35269764 PMCID: PMC8910399 DOI: 10.3390/ijms23052622] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/21/2022] [Accepted: 02/25/2022] [Indexed: 11/17/2022] Open
Abstract
Natural products are usually highly complicated organic molecules with special scaffolds, and they are an important resource in medicine. Natural products with complicated structures are produced by enzymes, and this is still a challenging research field, its mechanisms requiring detailed methods for elucidation. Flavin adenine dinucleotide (FAD)-dependent monooxygenases (FMOs) catalyze many oxidation reactions with chemo-, regio-, and stereo-selectivity, and they are involved in the synthesis of many natural products. In this review, we introduce the mechanisms for different FMOs, with the classical FAD (C4a)-hydroperoxide as the major oxidant. We also summarize the difference between FMOs and cytochrome P450 (CYP450) monooxygenases emphasizing the advantages of FMOs and their specificity for substrates. Finally, we present examples of FMO-catalyzed synthesis of natural products. Based on these explanations, this review will expand our knowledge of FMOs as powerful enzymes, as well as implementation of the FMOs as effective tools for biosynthesis.
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Shu Y, Wang JP, Li BX, Gan JL, Ding H, Liu R, Cai L, Ding ZT. Bioactive cytochalasans from the fungus Arthrinium arundinis DJ-13. PHYTOCHEMISTRY 2022; 194:113009. [PMID: 34826796 DOI: 10.1016/j.phytochem.2021.113009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/30/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
The investigation of the metabolites from Arthrinium arundinis DJ-13 grown in solid medium revealed six undescribed cytochalasans, arundisins A-F and twelve known compounds. Their structures were initially investigated in detail by spectroscopic analyses and were further confirmed by X-crystallography and ECD experiments. In the in vitro bioassays, arundisins A and B showed cytotoxic activity against the MCF-7 breast cancer cell line with IC50 values of 18.82 ± 0.36 and 15.20 ± 0.42 μM, respectively. Arundisin F exhibited potent antibacterial activity against Escherichia coli with MIC of 8.00 μg/mL (kanamycin, 2.00 μg/mL), and arundisin D displayed gently antibacterial activity against Candida albicans with MIC of 32.00 μg/mL (Nystatin, 1.00 μg/mL).
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Affiliation(s)
- Yan Shu
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Jia-Peng Wang
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Bing-Xian Li
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Jun-Li Gan
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Hao Ding
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Rui Liu
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China
| | - Le Cai
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China.
| | - Zhong-Tao Ding
- Functional Molecules Analysis and Biotransformation Key Laboratory of Universities in Yunnan Province, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, People's Republic of China.
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Zhang JM, Liu X, Wei Q, Ma C, Li D, Zou Y. Berberine bridge enzyme-like oxidase-catalysed double bond isomerization acts as the pathway switch in cytochalasin synthesis. Nat Commun 2022; 13:225. [PMID: 35017571 PMCID: PMC8752850 DOI: 10.1038/s41467-021-27931-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/10/2021] [Indexed: 11/09/2022] Open
Abstract
Cytochalasans (CYTs), as well as their polycyclic (pcCYTs) and polymerized (meCYTs) derivatives, constitute one of the largest families of fungal polyketide-nonribosomal peptide (PK-NRP) hybrid natural products. However, the mechanism of chemical conversion from mono-CYTs (moCYTs) to both pcCYTs and meCYTs remains unknown. Here, we show the first successful example of the reconstitution of the CYT core backbone as well as the whole pathway in a heterologous host. Importantly, we also describe the berberine bridge enzyme (BBE)-like oxidase AspoA, which uses Glu538 as a general acid biocatalyst to catalyse an unusual protonation-driven double bond isomerization reaction and acts as a switch to alter the native (for moCYTs) and nonenzymatic (for pcCYTs and meCYTs) pathways to synthesize aspochalasin family compounds. Our results present an unprecedented function of BBE-like enzymes and highly suggest that the isolated pcCYTs and meCYTs are most likely artificially derived products.
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Affiliation(s)
- Jin-Mei Zhang
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, China
| | - Xuan Liu
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, China
| | - Qian Wei
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, China
| | - Chuanteng Ma
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Yi Zou
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, China.
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Zhang X, Wu Z, Bao A, Zhao Z, Chen Y, Zhao H, Wang J, Chen C, Tong Q, Zhu H, Zhang Y. Asperflavipines C–E and aspermichalasine A: three cytochalasan heterotetramers and an unusual cytochalasan monomer from Aspergillus micronesiensis. Org Chem Front 2022. [DOI: 10.1039/d2qo00309k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Asperflavipines C–E, three new cytochalasin heterotetramers, possessing a highly complex tetradecacyclic ring system with continuous bridged ring systems, and aspermichalasine A, possessing an unusual 5/6/5/8 ring system, were isolated.
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Affiliation(s)
- Xiaotian Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhaodi Wu
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510120, China
| | - Alan Bao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ziming Zhao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yu Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Huimin Zhao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qingyi Tong
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Bioactive PKS-NRPS Alkaloids from the Plant-Derived Endophytic Fungus Xylaria arbuscula. Molecules 2021; 27:molecules27010136. [PMID: 35011368 PMCID: PMC8746755 DOI: 10.3390/molecules27010136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/15/2021] [Accepted: 12/15/2021] [Indexed: 11/25/2022] Open
Abstract
A novel hybrid PKS–NRPS alkaloid, xylarialoid A (1), containing a 13-membered macrocyclic moiety and [5,5,6] fused tricarbocyclic rings, together with ten known cytochalasins (2–11), was isolated from a plant-derived endophytic fungus, Xylaria arbuscula. The chemical structures of all compounds were elucidated using 1D and 2D NMR, HR ESIMS spectroscopic analyses, and electronic circular dichroism (ECD) calculation. Compounds 1–3 and 10 exhibited significant antitumor activities against A549 and Hep G2 cell lines, with IC50 values of 3.6–19.6 μM. In addition, compound 1 showed potent anti-inflammatory activity against LPS-induced nitric oxide (NO) production in macrophage RAW 264.7 cells (IC50, 6.6 μM).
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Li Y, Li Y, Xia Z, Zhang D, Chen X, Wang X, Liao J, Yi W, Chen J. Identification of a novel immune signature for optimizing prognosis and treatment prediction in colorectal cancer. Aging (Albany NY) 2021; 13:25518-25549. [PMID: 34898475 PMCID: PMC8714135 DOI: 10.18632/aging.203771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/22/2021] [Indexed: 04/11/2023]
Abstract
BACKGROUND Globally, colorectal cancer (CRC) is one of the most lethal malignant diseases. However, the currently approved therapeutic options for CRC failed to acquire satisfactory treatment efficacy. Tailoring therapeutic strategies for CRC individuals can provide new insights into personalized prediction approaches and thus maximize clinical benefits. METHODS In this study, a multi-step process was used to construct an immune-related genes (IRGs) based signature leveraging the expression profiles and clinical characteristics of CRC from the Gene Expression Omnibus (GEO) database and the Cancer Genome Atlas (TCGA) database. An integrated immunogenomic analysis was performed to determine the association between IRGs with prognostic significance and cancer genotypes in the tumor immune microenvironment (TIME). Moreover, we performed a comprehensive in silico therapeutics screening to identify agents with subclass-specific efficacy. RESULTS The established signature was shown to be a promising biomarker for evaluating clinical outcomes in CRC. The immune risk score as calculated by this classifier was significantly correlated with over-riding malignant phenotypes and immunophenotypes. Further analyses demonstrated that CRCs with low immune risk scores achieved better therapeutic benefits from immunotherapy, while AZD4547, Cytochalasin B and S-crizotinib might have potential therapeutic implications in the immune risk score-high CRCs. CONCLUSIONS Overall, this IRGs-based signature not only afforded a useful tool for determining the prognosis and evaluating the TIME features of CRCs, but also shed new light on tailoring CRCs with precise treatment.
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Affiliation(s)
- Yan Li
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yiyi Li
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zijin Xia
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Dun Zhang
- Department of Medical Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiaomei Chen
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, China
| | - Xinyu Wang
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jing Liao
- The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Wei Yi
- Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Jun Chen
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Guangdong Engineering and Technology Research Center for Disease-Model Animals, Laboratory Animal Center, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Key Laboratory of Tropical Disease Control of the Ministry of Education, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Center for Precision Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
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Marbán-González A, Maravilla-Moreno G, Vazquez-Chavez J, Hernández-Rodríguez M, Razo-Hernández RS, Ordóñez M, Viveros-Ceballos JL. Stereocontrolled Synthesis of Enantiopure cis-Fused Octahydroisoindolones via Chiral Oxazoloisoindolone Lactams. J Org Chem 2021; 86:16361-16368. [PMID: 34738814 DOI: 10.1021/acs.joc.1c01757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Kinetically controlled cyclocondensation of stereoisomeric and ring-chain tautomeric mixture of (±)-hydroxylactone 1 and 0.5 equiv of (R)-phenylglycinol provided tricyclic oxazoloisoindolone lactam (3R,5aS,9aR,9bS)-2a, a versatile intermediate for further stereocontrolled transformations to access enantiopure cis-fused octahydroisoindolones. An extension of this methodology was successfully applied to the synthesis of the 5,6-dihydroxy derivative (3aR,5R,6S,7aS)-17.
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Affiliation(s)
- Alberto Marbán-González
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
| | - Gaspar Maravilla-Moreno
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
| | - Josué Vazquez-Chavez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Mexico City, Mexico
| | - Marcos Hernández-Rodríguez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Coyoacán, Mexico City, Mexico
| | - Rodrigo Said Razo-Hernández
- Centro de Investigación en Dinámica Celular-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
| | - José Luis Viveros-Ceballos
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
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Orfali R, Perveen S, Khan MF, Ahmed AF, Tabassum S, Luciano P, Chianese G, Taglialatela-Scafati O. Asporychalasin, a bioactive cytochalasan with an unprecedented 6/6/11 skeleton from the Red Sea sediment Aspergillus oryzae. PHYTOCHEMISTRY 2021; 192:112952. [PMID: 34534713 DOI: 10.1016/j.phytochem.2021.112952] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/06/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
The cytochalasan asporychalasin (1) was obtained from the marine fungus Aspergillus oryzae, isolated from the Red Sea sediments collected off Jeddah, Saudi Arabia. The chemical structure of 1 was elucidated by extensive spectroscopic analysis and quantum-mechanical calculations of 13C NMR resonances and ECD to possess an unprecedented 6/6/11-fused tricyclic skeleton, including an isoquinolindione ring in place of the typical isoindolone. Asporychalasin exhibited moderate antiproliferative activity against three human cancer cell lines, lung carcinoma (A549), liver carcinoma (HepG2), and breast carcinoma (MCF7), and no toxicity on zebrafish embryos.
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Affiliation(s)
- Raha Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh, 11451, Saudi Arabia.
| | - Muhammad F Khan
- Bio-products Research Chair, Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Atallah F Ahmed
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P. O. Box 2457, Riyadh, 11451, Saudi Arabia; Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Sobia Tabassum
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Paolo Luciano
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via Montesano 49, 80131, Naples, Italy
| | - Giuseppina Chianese
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via Montesano 49, 80131, Naples, Italy
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via Montesano 49, 80131, Naples, Italy.
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Huang G, Lin W, Li H, Tang Q, Hu Z, Huang H, Deng X, Xu Q. Pentacyclic Cytochalasins and Their Derivatives from the Endophytic Fungus Phomopsis sp. xz-18. Molecules 2021; 26:molecules26216505. [PMID: 34770914 PMCID: PMC8587572 DOI: 10.3390/molecules26216505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022] Open
Abstract
Eight new cytochalasins 1–8 and ten known analogs 9–18 were isolated from the endophytic fungus Phomopsis sp. xz-18. The planar structures of the cytochalasins were determined by HR-ESI-MS and NMR analysis. Compounds 1, 2, 9 and 10 were 5/6/6/7/5-fused pentacyclic cytochalasins; compounds 3 and 4 had conjugated diene structures in the macrocycle; and compound 6 had a β,γ-unsaturated ketone. The absolute configuration of 6 was confirmed for the first time by the octant rule. The acid-free purification process proved that the pentacyclic system was a natural biosynthetic product and not an acid-mediated intramolecular cyclized artifact. The new compounds did not exhibit activities against human cancer cell lines in cytotoxicity bioassays or antipathogenic fungal activity, but compounds 1, 3 and 4 showed moderate antibacterial activity in disk diffusion assays.
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Affiliation(s)
- Guichon Huang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Weiwen Lin
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Hanpeng Li
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Qian Tang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Zhiyu Hu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Huiying Huang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
| | - Xianming Deng
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
- State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University, Xiamen 361102, China
- Correspondence: (X.D.); (Q.X.); Tel.: +86-592-2184180 (X.D.); +86-592-2180328 (Q.X.)
| | - Qingyan Xu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361102, China; (G.H.); (W.L.); (H.L.); (Q.T.); (Z.H.); (H.H.)
- State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University, Xiamen 361102, China
- Correspondence: (X.D.); (Q.X.); Tel.: +86-592-2184180 (X.D.); +86-592-2180328 (Q.X.)
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50
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Cytochalasans and azaphilones: suitable chemotaxonomic markers for the Chaetomium species. Appl Microbiol Biotechnol 2021; 105:8139-8155. [PMID: 34647136 DOI: 10.1007/s00253-021-11630-2] [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: 08/06/2021] [Revised: 10/01/2021] [Accepted: 10/03/2021] [Indexed: 10/20/2022]
Abstract
The accurate taxonomic concept of the fungal Chaetomium species has been a hard work due to morphological similarity. Chemotaxonomy based on secondary metabolites is a powerful tool for taxonomical purposes, which could be used as an auxiliary reference to solve the problems encountered in the classification of Chaetomium. Among secondary metabolites produced by Chaetomium, cytochalasans and azaphilones exhibited a pattern of distribution and frequency of occurrence that establish them as chemotaxonomic markers for the Chaetomium species. This review attempted to elucidate the composition of the Chaetomium species and its relationship with classical taxonomy by summarizing the pattern of cytochalasans and azaphilones distribution and biosynthesis in the Chaetomium species. KEY POINTS: • Secondary metabolites from the genus Chaetomium are summarized. • Cytochalasans and azaphilones could be characteristic metabolites of the Chaetomium species. • Cytochalasans and azaphilones could be used to analyze for taxonomical purposes.
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