1
|
Amuti S, Saito Y, Fukuyoshi S, Miyake K, Newman DJ, O’Keefe BR, Lee KH, Nakagawa-Goto K. Unusual Vilasinin-Class Limonoids from Trichilia rubescens. Molecules 2024; 29:651. [PMID: 38338394 PMCID: PMC10856392 DOI: 10.3390/molecules29030651] [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: 01/05/2024] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Eight vilasinin-class limonoids, including the unusually chlorinated rubescins K-M (1-3), the 2,3-epoxylated rubescin N (4), and rubescins O-R (5-8), were newly isolated from Trichilia rubescens. The structures of the isolated compounds were determined through spectroscopic and spectrometric analyses, as well as ECD calculations. The natural occurrence of chlorinated limonoids 1-3 was confirmed by chemical methods and HPLC analysis of a roughly fractionated portion of the plant extract. Eight selected limonoids, including previously known and new compounds, were evaluated for antiproliferative activity against five human tumor cell lines. All tested limonoids, except 8, exhibited significant potency, with IC50 values of <10 μM; in particular, limonoid 14 strongly inhibited tumor cell growth, with IC50 values of 0.54-2.06 μM against all tumor cell lines, including multi-drug-resistant cells.
Collapse
Affiliation(s)
- Saidanxia Amuti
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan; (S.A.); (Y.S.); (S.F.)
| | - Yohei Saito
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan; (S.A.); (Y.S.); (S.F.)
| | - Shuichi Fukuyoshi
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan; (S.A.); (Y.S.); (S.F.)
| | - Katsunori Miyake
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji 192-0392, Japan;
| | - David J. Newman
- Natural Products Branch, Developmental Therapeutics Program, Center of Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, MD 21702-1201, USA; (D.J.N.); (B.R.O.)
| | - Barry R. O’Keefe
- Natural Products Branch, Developmental Therapeutics Program, Center of Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, MD 21702-1201, USA; (D.J.N.); (B.R.O.)
- Molecular Targets Program, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, MD 21702-1201, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
- Chinese Medicine Research and Development Center, China Medical University and Hospital, 2 Yuh-Der Road, Taichung 40447, Taiwan
| | - Kyoko Nakagawa-Goto
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan; (S.A.); (Y.S.); (S.F.)
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
| |
Collapse
|
2
|
Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
Collapse
Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
| |
Collapse
|
3
|
Freshwater-Derived Streptomyces: Prospective Polyvinyl Chloride (PVC) Biodegraders. ScientificWorldJournal 2022; 2022:6420003. [DOI: 10.1155/2022/6420003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/17/2022] [Accepted: 11/03/2022] [Indexed: 11/15/2022] Open
Abstract
Polyvinyl chloride (PVC) is widely used in industrial applications, such as construction and clothing, owing to its chemical, physical, and environmental resistance. Owing to the previous characteristics, PVC is the third most consumed plastic worldwide and, consequently, an increasing waste accumulation-related problem. The current study evaluated an in-house collection of 61 Actinobacteria strains for PVC resin biodegradation. Weight loss percentage was measured after the completion of incubation. Thermo-gravimetric analysis was subsequently performed using the PVC incubated with the three strains exhibiting the highest weight loss. GC-MS and ionic exchange chromatography analyses were also performed using the culture media supernatant of these three strains. After incubation, 14 strains had a PVC weight loss percentage higher than 50% in ISP-2 broth. These 14 strains were identified as Streptomyces strains. Strains 208, 250, and 290 showed the highest weight loss percentages (57.6–61.5% range). The thermal stability of PVC after bacterial exposure using these three strains was evaluated, and a modification of the representative degradation stages of nonincubated PVC was observed. Additionally, GC-MS analysis revealed the presence of aromatic compounds in the inoculated culture media, and ionic exchange chromatography showed chloride release in the supernatant. A mathematical relation between culture conditions and PVC weight loss was also found for strains 208 and 290, showing an accuracy up to 97.99%. These results highlight the potential of the freshwater-derived Streptomyces strains as candidates for the PVC biodegradation strategy and constitute the first approach to a waste management control scale-up process.
Collapse
|
4
|
Halogenase-Targeted Genome Mining Leads to the Discovery of (±) Pestalachlorides A1a, A2a, and Their Atropisomers. Antibiotics (Basel) 2022; 11:antibiotics11101304. [PMID: 36289962 PMCID: PMC9598291 DOI: 10.3390/antibiotics11101304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/14/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Genome mining has become an important tool for discovering new natural products and identifying the cryptic biosynthesis gene clusters. Here, we utilized the flavin-dependent halogenase GedL as the probe in combination with characteristic halogen isotope patterns to mine new halogenated secondary metabolites from our in-house fungal database. As a result, two pairs of atropisomers, pestalachlorides A1a (1a)/A1b (1b) and A2a (2a)/A2b (2b), along with known compounds pestalachloride A (3) and SB87-H (4), were identified from Pestalotiopsis rhododendri LF-19-12. A plausible biosynthetic assembly line for pestalachlorides involving a putative free-standing phenol flavin-dependent halogenase was proposed based on bioinformatics analysis. Pestalachlorides exhibited antibacterial activity against sensitive and drug-resistant S. aureus and E. faecium with MIC values ranging from 4 μg/mL to 32 μg/mL. This study indicates that halogenase-targeted genome mining is an efficient strategy for discovering halogenated compounds and their corresponding halogenases.
Collapse
|
5
|
Ren X, Chen C, Ye Y, Xu Z, Zhao Q, Luo X, Liu Y, Guo P. Anti-inflammatory compounds from the mangrove endophytic fungus Amorosia sp. SCSIO 41026. Front Microbiol 2022; 13:976399. [PMID: 36212882 PMCID: PMC9533711 DOI: 10.3389/fmicb.2022.976399] [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: 06/23/2022] [Accepted: 07/21/2022] [Indexed: 11/17/2022] Open
Abstract
Three new chlorinated compounds, including two propenylphenol derivatives, chlorophenol A and B (1 and 2), and one benzofuran derivative, chlorophenol C (3), together with 16 known compounds, were isolated from the mangrove endophytic fungus Amorosia sp. SCSIO 41026. 7-Chloro-3,4-dihydro-6,8-dihydroxy-3-methylisocoumarine (4) and 2,4-dichloro-3-hydroxy-5-methoxy-toluene (5) were obtained as new natural products. Their structures were elucidated by physicochemical properties and extensive spectroscopic analysis. Compounds 1, 4, 7, 9, 13, 15, 16, and 19 possessed inhibitory effects against the excessive production of nitric oxide (NO) and pro-inflammatory cytokines in lipopolysaccharide (LPS)-challenged RAW264.7 macrophages without obvious cytotoxicity. Moreover, 5-chloro-6-hydroxymellein (13) further alleviated the pathological lung injury of LPS-administrated mice and protected RAW264.7 macrophages against LPS-induced inflammation through PI3K/AKT pathway in vivo. Our research laid the foundation for the application of compound 13 as a potential anti-inflammatory candidate.
Collapse
Affiliation(s)
- Xue Ren
- Capital Institute of Pediatrics, Beijing, China
| | - Chunmei Chen
- 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, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuxiu Ye
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Ziying Xu
- Capital Institute of Pediatrics, Beijing, China
| | - Qingliang Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Center for Molecular Imaging and Translational Medicine, Department of Laboratory Medicine, School of Public Health, Xiamen University, Xiamen, China
| | - Xiaowei Luo
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
- *Correspondence: Xiaowei Luo,
| | - Yonghong Liu
- 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, China
- University of Chinese Academy of Sciences, Beijing, China
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- Yonghong Liu,
| | - Peng Guo
- Capital Institute of Pediatrics, Beijing, China
- Peng Guo,
| |
Collapse
|
6
|
Terefe EM, Okalebo FA, Derese S, Muriuki J, Rotich W, Mas-Claret E, Sadgrove N, Padilla-González GF, Prescott TAK, Siddique H, Langat MK. Constituents of Croton megalocarpus with Potential Anti-HIV Activity. JOURNAL OF NATURAL PRODUCTS 2022; 85:1861-1866. [PMID: 35709365 DOI: 10.1021/acs.jnatprod.1c01013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Reported herein is an anti-HIV monochlorinated compound, 1β-acetoxy-3β-chloro-5α,6α-dihydroxycrotocascarin L (1), of the rare crotofolane diterpenoid class. Compound 1, a suspected artifact of extraction, along with the previously undescribed 11β-acetoxycrotocascarin L (2) and a known compound, crotocascarin K (3), were isolated from the bark of Croton megalocarpus, a Kenyan oil-producing seed crop. Compounds 1 and 3 inhibited HIV-1 replication with IC50 values of 28 and 5.5 nM, respectively. Furthermore, both compounds lacked cytotoxicity toward MT-4 cells and FM-55-M1 cells at concentrations of up to 50 μM. Compounds 1 and 3 were both found to inhibit HIV-1 protease.
Collapse
Affiliation(s)
- Ermias Mergia Terefe
- Department of Pharmacology and Pharmacognosy, School of Pharmacy and Health Sciences, United States International University-Africa, 14634-00800, Nairobi, Kenya
- Department of Pharmacology and Pharmacognosy, College of Health Sciences, University of Nairobi, 14634-00800, Nairobi, Kenya
| | - Faith A Okalebo
- Department of Pharmacology and Pharmacognosy, College of Health Sciences, University of Nairobi, 14634-00800, Nairobi, Kenya
| | - Solomon Derese
- Department of Chemistry, University of Nairobi, 30197-00100, Nairobi, Kenya
| | - Joseph Muriuki
- Centre for Virus Research, Kenya Medical Research Institute, 54628-00200, Nairobi, Kenya
| | - Winnie Rotich
- Sigowet-Soin Sub-County Hospital, Sondu-Kapsoit Road, Sigowet, Kericho County, 112-20200, Kericho, Kenya
| | - Eduard Mas-Claret
- Royal Botanic Gardens, Kew, Kew Green, Richmond, Surrey, TW9 3AE, U.K
| | - Nicholas Sadgrove
- Royal Botanic Gardens, Kew, Kew Green, Richmond, Surrey, TW9 3AE, U.K
| | | | | | - Holly Siddique
- Royal Botanic Gardens, Kew, Kew Green, Richmond, Surrey, TW9 3AE, U.K
| | - Moses K Langat
- Royal Botanic Gardens, Kew, Kew Green, Richmond, Surrey, TW9 3AE, U.K
| |
Collapse
|
7
|
Giannopoulos V, Smonou I. Asymmetric Reduction of α,α‐Dichloro‐β‐Keto Esters by NADPH‐Dependent Ketoreductases. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vasileios Giannopoulos
- University of Crete Department of Chemistry: Panepistemio Kretes Tmema Chemeias Chemistry GREECE
| | - Ioulia Smonou
- University of Crete Department of Chemistry Campus Voutes, Heraklion 71003 Heraklion, Crete GREECE
| |
Collapse
|
8
|
Wang J, Pang X, Chen C, Gao C, Zhou X, Liu Y, Luo X. Chemistry, Biosynthesis, and Biological Activity of Halogenated Compounds Produced by Marine Microorganisms. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jiamin 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 510301 China
- University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 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 510301 China
| | - Chunmei Chen
- 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 510301 China
- University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 China
| | - Chenghai Gao
- Institute of Marine Drugs Guangxi University of Chinese Medicine Nanning 530200 China
| | - Xuefeng Zhou
- 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 510301 China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458 China
- University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 China
| | - Yonghong Liu
- 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 510301 China
- Institute of Marine Drugs Guangxi University of Chinese Medicine Nanning 530200 China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458 China
- University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 China
| | - Xiaowei Luo
- Institute of Marine Drugs Guangxi University of Chinese Medicine Nanning 530200 China
| |
Collapse
|
9
|
Chu MJ, Li M, Ma H, Li PL, Li GQ. Secondary metabolites from marine sponges of the genus Agelas: a comprehensive update insight on structural diversity and bioactivity. RSC Adv 2022; 12:7789-7820. [PMID: 35424773 PMCID: PMC8982468 DOI: 10.1039/d1ra08765g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/03/2022] [Indexed: 01/07/2023] Open
Abstract
As one of the most common marine sponges in tropical and subtropical oceans, the sponges of the genus Agelas, have emerged as unique and yet under-investigated pools for discovery of natural products with fabulous molecular diversity and myriad interesting biological activities. The present review highlights the chemical structure and biological activity of 355 compounds that have been isolated and characterized from the members of Agelas sponges, over the period of about five decades (from 1971 to November 2021). For a better understanding, these numerous compounds are firstly classified and presented according to their carbon skeleton as well as their biosynthetic origins. Relevant summaries focusing on the source organism and the associated bioactivity of these compounds belonging to different chemical classes are also provided. This review highlights sponges of the genus Agelas as exciting source for discovery of intriguing natural compounds. The marine sponges of the genus Agelas, are unique and yet under-investigated pools for discovery of natural products with fabulous molecular diversity and myriad interesting biological activities.![]()
Collapse
Affiliation(s)
- Mei-Jun Chu
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Meng Li
- Department of Pharmacy, Qingdao Central Hospital, Qingdao 266042, China
| | - He Ma
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Ping-Lin Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao 266235, China
| | - Guo-Qiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory of Marine Drugs and Biological Products, National Laboratory for Marine Science and Technology, Qingdao 266235, China
| |
Collapse
|
10
|
Sana B, Ho T, Kannan S, Ke D, Li EHY, Seayad J, Verma CS, Duong HA, Ghadessy FJ. Engineered RebH Halogenase Variants Demonstrating a Specificity Switch from Tryptophan towards Novel Indole Compounds. Chembiochem 2021; 22:2791-2798. [PMID: 34240527 PMCID: PMC8518859 DOI: 10.1002/cbic.202100210] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/06/2021] [Indexed: 01/21/2023]
Abstract
Activating industrially important aromatic hydrocarbons by installing halogen atoms is extremely important in organic synthesis and often improves the pharmacological properties of drug molecules. To this end, tryptophan halogenase enzymes are potentially valuable tools for regioselective halogenation of arenes, including various industrially important indole derivatives and similar scaffolds. Although endogenous enzymes show reasonable substrate scope towards indole compounds, their efficacy can often be improved by engineering. Using a structure-guided semi-rational mutagenesis approach, we have developed two RebH variants with expanded biocatalytic repertoires that can efficiently halogenate several novel indole substrates and produce important pharmaceutical intermediates. Interestingly, the engineered enzymes are completely inactive towards their natural substrate tryptophan in spite of their high tolerance to various functional groups in the indole ring. Computational modelling and molecular dynamics simulations provide mechanistic insights into the role of gatekeeper residues in the substrate binding site and the dramatic switch in substrate specificity when these are mutated.
Collapse
Affiliation(s)
- Barindra Sana
- Disease Intervention Technology LaboratoryInstitute of Molecular and Cell BiologyAgency for Science Technology and Research (A*STAR)8 A Biomedical Grove, #06-04/05 Neuros/ImmunosSingapore138648Singapore
| | - Timothy Ho
- Institute of Chemical and Engineering SciencesAgency for Science Technology And Research (A*STAR)8 Biomedical Grove, Neuros, #07-01Singapore138665Singapore
| | - Srinivasaraghavan Kannan
- Bioinformatics InstituteAgency for Science Technology And Research (A*STAR)30 Biopolis Street, #07-01 MatrixSingapore138671Singapore
| | - Ding Ke
- Disease Intervention Technology LaboratoryInstitute of Molecular and Cell BiologyAgency for Science Technology and Research (A*STAR)8 A Biomedical Grove, #06-04/05 Neuros/ImmunosSingapore138648Singapore
| | - Eunice H. Y. Li
- Institute of Chemical and Engineering SciencesAgency for Science Technology And Research (A*STAR)8 Biomedical Grove, Neuros, #07-01Singapore138665Singapore
| | - Jayasree Seayad
- Institute of Chemical and Engineering SciencesAgency for Science Technology And Research (A*STAR)8 Biomedical Grove, Neuros, #07-01Singapore138665Singapore
| | - Chandra S. Verma
- Bioinformatics InstituteAgency for Science Technology And Research (A*STAR)30 Biopolis Street, #07-01 MatrixSingapore138671Singapore
- School of Biological SciencesNanyang Technological University60 Nanyang DriveSingapore637551Singapore
- Department of Biological SciencesNational University of Singapore14 Science Drive 4Singapore117558Singapore
| | - Hung A. Duong
- Institute of Chemical and Engineering SciencesAgency for Science Technology And Research (A*STAR)8 Biomedical Grove, Neuros, #07-01Singapore138665Singapore
| | - Farid J. Ghadessy
- Disease Intervention Technology LaboratoryInstitute of Molecular and Cell BiologyAgency for Science Technology and Research (A*STAR)8 A Biomedical Grove, #06-04/05 Neuros/ImmunosSingapore138648Singapore
| |
Collapse
|
11
|
Jung P, D’Agostino PM, Brust K, Büdel B, Lakatos M. Final Destination? Pinpointing Hyella disjuncta sp. nov. PCC 6712 (Cyanobacteria) Based on Taxonomic Aspects, Multicellularity, Nitrogen Fixation and Biosynthetic Gene Clusters. Life (Basel) 2021; 11:916. [PMID: 34575065 PMCID: PMC8472315 DOI: 10.3390/life11090916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022] Open
Abstract
Unicellular cyanobacteria inhabit a wide range of ecosytems and can be found throughout the phylum offering space for taxonomic confusion. One example is strain PCC 6712 that was described as Chlorogloea sp. (Nostocales) and later assigned to the genus Chroococcidiopsis (Chroococcidiopsidales). We now show that this strain belongs to the order Pleurocapsales and term it Hyella disjuncta based on morphology, genome analyses and 16S-23S ITS rRNA phylogeny. Genomic analysis indicated that H. disjuncta PCC 6712 shared about 44.7% orthologue genes with its closest relative H. patelloides. Furthermore, 12 cryptic biosynthetic gene clusters (BGCs) with potential bioactivity, such as a mycosporine-like amino acid BGC, were detected. Interestingly, the full set of nitrogen fixation genes was found in H. disjuncta PCC 6712 despite its inability to grow on nitrogen-free medium. A comparison of genes responsible for multicellularity was performed, indicating that most of these genes were present and related to those found in other cyanobacterial orders. This is in contrast to the formation of pseudofilaments-a main feature of the genus Hyella-which is weakly expressed in H. disjuncta PCC 6712 but prominent in Hyella patelloides LEGE 07179. Thus, our study pinpoints crucial but hidden aspects of polyphasic cyanobacterial taxonomy.
Collapse
Affiliation(s)
- Patrick Jung
- Department of Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Carl-Schurz-Str. 10–16, 66953 Pirmasens, Germany;
| | - Paul M. D’Agostino
- Department of Technical Biochemistry, Technical University of Dresden, Bergstr. 66, 01069 Dresden, Germany;
| | - Katharina Brust
- Department of Ecology, University of Kaiserslautern, Erwin Schrödinger Str. 14, 67663 Kaiserslautern, Germany;
| | - Burkhard Büdel
- Department of Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger Str. 52, 67663 Kaiserslautern, Germany;
| | - Michael Lakatos
- Department of Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Carl-Schurz-Str. 10–16, 66953 Pirmasens, Germany;
| |
Collapse
|
12
|
Niu S, Liu D, Shao Z, Huang J, Fan A, Lin W. Chlorinated metabolites with antibacterial activities from a deep-sea-derived Spiromastix fungus. RSC Adv 2021; 11:29661-29667. [PMID: 35479535 PMCID: PMC9041095 DOI: 10.1039/d1ra05736g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/20/2021] [Indexed: 11/21/2022] Open
Abstract
Chromatographic separation of the solid cultures of a deep-sea-derived Spiromastix fungus (MCCC 3A00308) resulted in the isolation of eight compounds. Their structures were identified on the basis of the spectroscopic data. Compounds 1–8 are classified as depsidone-type (1–4), isocoumarin-type (5 and 6), and benzothiazole-type (7 and 8), of which 1–7 are new compounds and 1–3 along with 5 and 6 are chlorinated. Compound 3 is characterized by trichlorination and shows potent activities against Gram-positive pathogenic bacteria including Staphylococcus aureus ATCC 25923, Bacillus thuringiensis ATCC 10792, and Bacillus subtilis CMCC 63501, with minimum inhibitory concentration (MIC) values ranging from 0.5 to 1.0 μg mL−1. This study extends the chemical diversity of chlorinated natural products from marine-derived fungi and provides a promising lead for the development of antibacterial agents. Chromatographic separation of the solid cultures of a deep-sea-derived Spiromastix fungus (MCCC 3A00308) resulted in the isolation of five chlorinated compounds with antibacterial activities.![]()
Collapse
Affiliation(s)
- Siwen Niu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China .,Third Institute of Oceanography, SOA Xiamen 361005 P. R. China
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Zongze Shao
- Third Institute of Oceanography, SOA Xiamen 361005 P. R. China
| | - Jiang Huang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Aili Fan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China .,Institute of Ocean Research, Ningbo Institute of Marine Medicine, Peking University Beijing 100191 P. R. China
| |
Collapse
|
13
|
Papadopoulou A, Meierhofer J, Meyer F, Hayashi T, Schneider S, Sager E, Buller R. Re‐Programming and Optimization of a
L
‐Proline
cis
‐4‐Hydroxylase for the
cis
‐3‐Halogenation of its Native Substrate. ChemCatChem 2021. [DOI: 10.1002/cctc.202100591] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Athena Papadopoulou
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
| | - Jasmin Meierhofer
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
| | - Fabian Meyer
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
| | - Takahiro Hayashi
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
- Current address: Science & Innovation Center Mitsubishi Chemical Corporation Yokohama Kanagawa 227-8502 Japan
| | - Samuel Schneider
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
| | - Emine Sager
- Novartis Institutes for BioMedical Research Global Discovery Chemistry 4056 Basel Switzerland
| | - Rebecca Buller
- Competence Center for Biocatalysis Institute of Chemistry and Biotechnology Zurich University of Applied Sciences 8820 Wädenswil Switzerland
| |
Collapse
|
14
|
Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp 3 )-H Bonds Suitable for Late-Stage Functionalization. Angew Chem Int Ed Engl 2021; 60:8276-8283. [PMID: 33480134 DOI: 10.1002/anie.202016548] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/03/2021] [Indexed: 01/18/2023]
Abstract
C(sp3 )-Cl bonds are present in numerous biologically active small molecules, and an ideal route for their preparation is by the chlorination of a C(sp3 )-H bond. However, most current methods for the chlorination of C(sp3 )-H bonds are insufficiently site selective and tolerant of functional groups to be applicable to the late-stage functionalization of complex molecules. We report a method for the highly selective chlorination of tertiary and benzylic C(sp3 )-H bonds to produce the corresponding chlorides, generally in high yields. The reaction occurs with a mixture of an azidoiodinane, which generates a selective H-atom abstractor under mild conditions, and a readily-accessible and inexpensive copper(II) chloride complex, which efficiently transfers a chlorine atom. The reaction's exceptional functional group tolerance is demonstrated by the chlorination of >30 diversely functionalized substrates and the late-stage chlorination of a dozen derivatives of natural products and active pharmaceutical ingredients.
Collapse
Affiliation(s)
- Alexander Fawcett
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - M Josephine Keller
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Zachary Herrera
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| |
Collapse
|
15
|
Fawcett A, Keller MJ, Herrera Z, Hartwig JF. Site Selective Chlorination of C(sp
3
)−H Bonds Suitable for Late‐Stage Functionalization. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Fawcett
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - M. Josephine Keller
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Zachary Herrera
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| |
Collapse
|
16
|
Estévez-Sarmiento F, Saavedra E, Ruiz-Estévez M, León F, Quintana J, Brouard I, Estévez F. Chlorinated Guaiane-Type Sesquiterpene Lactones as Cytotoxic Agents against Human Tumor Cells. Int J Mol Sci 2020; 21:ijms21249767. [PMID: 33371413 PMCID: PMC7767465 DOI: 10.3390/ijms21249767] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/11/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022] Open
Abstract
Guaiane-type sesquiterpene lactones are naturally occurring compounds which have attracted attention due to their array of biological activities. In this study, chlorinated guaianolides 1-8, isolated from plants of the genus Centaurea, were evaluated against the human leukemia cell lines HL-60, U-937, a specific U-937 cell line that overexpresses the anti-apoptotic Bcl-2 protein and the human melanoma cell line SK-MEL-1. This established the relevant structure-growth inhibition relationships. Chlorohyssopifolins A (1), C (3) and D (4) and linichlorin A (6) were the most potent compounds in terms of inducing growth inhibition in the four cell lines. IC50 values were below 10 μM in all cases. Chlorohyssopifolins A (1) and D (4) and linichlorin A (6) were potent apoptotic inducers in human U-937 leukemia cells, as determined by fluorescent microscopy and flow cytometry, and their mechanism of action was associated with cytochrome c release, caspase activation and poly(ADP-ribose)polymerase cleavage. Overall this study shows that guaianolides induce cytotoxicity against human tumor cells and provides important insights into the cell death pathways that are involved.
Collapse
Affiliation(s)
- Francisco Estévez-Sarmiento
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Grupo de Química Orgánica y Bioquímica, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, 35016 Las Palmas de Gran Canaria, Spain; (F.E.-S.); (E.S.); (J.Q.)
| | - Ester Saavedra
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Grupo de Química Orgánica y Bioquímica, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, 35016 Las Palmas de Gran Canaria, Spain; (F.E.-S.); (E.S.); (J.Q.)
| | | | - Francisco León
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA;
| | - José Quintana
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Grupo de Química Orgánica y Bioquímica, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, 35016 Las Palmas de Gran Canaria, Spain; (F.E.-S.); (E.S.); (J.Q.)
| | - Ignacio Brouard
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, 38206 La Laguna, Spain;
| | - Francisco Estévez
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Grupo de Química Orgánica y Bioquímica, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, 35016 Las Palmas de Gran Canaria, Spain; (F.E.-S.); (E.S.); (J.Q.)
- Correspondence: ; Tel.: +34-928-451443
| |
Collapse
|
17
|
Menon BRK, Richmond D, Menon N. Halogenases for biosynthetic pathway engineering: Toward new routes to naturals and non-naturals. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2020. [DOI: 10.1080/01614940.2020.1823788] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Binuraj R. K. Menon
- Warwick Integrative Synthetic Biology Centre, School of Life Sciences, University of Warwick, Coventry, UK
| | - Daniel Richmond
- Warwick Integrative Synthetic Biology Centre, School of Life Sciences, University of Warwick, Coventry, UK
| | - Navya Menon
- Warwick Integrative Synthetic Biology Centre, School of Life Sciences, University of Warwick, Coventry, UK
| |
Collapse
|
18
|
Yamaoka Y, Nakayama T, Kawai S, Takasu K. Total Synthesis of (-)-Sigillin A: A Polychlorinated and Polyoxygenated Natural Product. Org Lett 2020; 22:7721-7724. [PMID: 32935991 DOI: 10.1021/acs.orglett.0c02930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The total synthesis of (-)-sigillin A, a highly chlorinated and oxygenated octahydroisocoumarin, is described herein. A hexahydroisocoumarin skeleton was constructed from (R)-4-(trichloromethyl)oxetan-2-one in seven steps. Its unique manganese oxidation provided an enone as the key intermediate of sigillin A. Stereoselective installation of two hydroxy groups and formation of gem-dichloroalkene from the corresponding ketone led to the total synthesis of (-)-sigillin A in a total of 16 steps.
Collapse
Affiliation(s)
- Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takamori Nakayama
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shota Kawai
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|
19
|
Halogenating Enzymes for Active Agent Synthesis: First Steps Are Done and Many Have to Follow. Molecules 2019; 24:molecules24214008. [PMID: 31694313 PMCID: PMC6864650 DOI: 10.3390/molecules24214008] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 10/28/2019] [Accepted: 10/31/2019] [Indexed: 12/22/2022] Open
Abstract
Halogens can be very important for active agents as vital parts of their binding mode, on the one hand, but are on the other hand instrumental in the synthesis of most active agents. However, the primary halogenating compound is molecular chlorine which has two major drawbacks, high energy consumption and hazardous handling. Nature bypassed molecular halogens and evolved at least six halogenating enzymes: Three kind of haloperoxidases, flavin-dependent halogenases as well as α-ketoglutarate and S-adenosylmethionine (SAM)-dependent halogenases. This review shows what is known today on these enzymes in terms of biocatalytic usage. The reader may understand this review as a plea for the usage of halogenating enzymes for fine chemical syntheses, but there are many steps to take until halogenating enzymes are reliable, flexible, and sustainable catalysts for halogenation.
Collapse
|