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Inoue S, Thanh Nguyen D, Hamada K, Okuma R, Okada C, Okada M, Abe I, Sengoku T, Goto Y, Suga H. De Novo Discovery of Pseudo-Natural Prenylated Macrocyclic Peptide Ligands. Angew Chem Int Ed Engl 2024; 63:e202409973. [PMID: 38837490 DOI: 10.1002/anie.202409973] [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: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 06/07/2024]
Abstract
Prenylation of peptides is widely observed in the secondary metabolites of diverse organisms, granting peptides unique chemical properties distinct from proteinogenic amino acids. Discovery of prenylated peptide agents has largely relied on isolation or genome mining of naturally occurring molecules. To devise a platform technology for de novo discovery of artificial prenylated peptides targeting a protein of choice, here we have integrated the thioether-macrocyclic peptide (teMP) library construction/selection technology, so-called RaPID (Random nonstandard Peptides Integrated Discovery) system, with a Trp-C3-prenyltransferase KgpF involved in the biosynthesis of a prenylated natural product. This unique enzyme exhibited remarkably broad substrate tolerance, capable of modifying various Trp-containing teMPs to install a prenylated residue with tricyclic constrained structure. We constructed a vast library of prenylated teMPs and subjected it to in vitro selection against a phosphoglycerate mutase. This selection platform has led to the identification of a pseudo-natural prenylated teMP inhibiting the target enzyme with an IC50 of 30 nM. Importantly, the prenylation was essential for the inhibitory activity, enhanced serum stability, and cellular uptake of the peptide, highlighting the benefits of peptide prenylation. This work showcases the de novo discovery platform for pseudo-natural prenylated peptides, which is readily applicable to other drug targets.
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Affiliation(s)
- Sumika Inoue
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
| | - Dinh Thanh Nguyen
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
| | - Keisuke Hamada
- Department of Biochemistry, Graduate School of Medicine, Yokohama City University, Kanazawa-ku, 236-0004, Yokohama, Japan
| | - Rika Okuma
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
| | - Chikako Okada
- Department of Biochemistry, Graduate School of Medicine, Yokohama City University, Kanazawa-ku, 236-0004, Yokohama, Japan
| | - Masahiro Okada
- Department of Material and Life Chemistry, Kanagawa University, Kanagawa-ku, 221-8686, Yokohama, Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
| | - Toru Sengoku
- Department of Biochemistry, Graduate School of Medicine, Yokohama City University, Kanazawa-ku, 236-0004, Yokohama, Japan
| | - Yuki Goto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, 606-8502, Kyoto, Japan
- Toyota Riken Rising Fellow, Toyota Physical and Chemical Research Institute, Sakyo, 606-8502, Kyoto, Japan
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Bunkyo, 113-0033, Tokyo, Japan
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Baunach M, Guljamow A, Miguel-Gordo M, Dittmann E. Harnessing the potential: advances in cyanobacterial natural product research and biotechnology. Nat Prod Rep 2024; 41:347-369. [PMID: 38088806 DOI: 10.1039/d3np00045a] [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: 03/21/2024]
Abstract
Covering: 2000 to 2023Cyanobacteria produce a variety of bioactive natural products that can pose a threat to humans and animals as environmental toxins, but also have potential for or inspire pharmaceutical use. As oxygenic phototrophs, cyanobacteria furthermore hold great promise for sustainable biotechnology. Yet, the necessary tools for exploiting their biotechnological potential have so far been established only for a few model strains of cyanobacteria, while large untapped biosynthetic resources are hidden in slow-growing cyanobacterial genera that are difficult to access by genetic techniques. In recent years, several approaches have been developed to circumvent the bottlenecks in cyanobacterial natural product research. Here, we summarize current progress that has been made in unlocking or characterizing cryptic metabolic pathways using integrated omics techniques, orphan gene cluster activation, use of genetic approaches in original producers, heterologous expression and chemo-enzymatic techniques. We are mainly highlighting genomic mining concepts and strategies towards high-titer production of cyanobacterial natural products from the last 10 years and discuss the need for further research developments in this field.
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Affiliation(s)
- Martin Baunach
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany.
- University of Bonn, Institute of Pharmaceutical Biology, Nußallee 6, 53115 Bonn, Germany
| | - Arthur Guljamow
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany.
| | - María Miguel-Gordo
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany.
| | - Elke Dittmann
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany.
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Entfellner E, Baumann KBL, Edwards C, Kurmayer R. High Structural Diversity of Aeruginosins in Bloom-Forming Cyanobacteria of the Genus Planktothrix as a Consequence of Multiple Recombination Events. Mar Drugs 2023; 21:638. [PMID: 38132959 PMCID: PMC10744761 DOI: 10.3390/md21120638] [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: 10/29/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
Many compounds produced by cyanobacteria act as serine protease inhibitors, such as the tetrapeptides aeruginosins (Aer), which are found widely distributed. The structural diversity of Aer is intriguingly high. However, the genetic basis of this remains elusive. In this study, we explored the genetic basis of Aer synthesis among the filamentous cyanobacteria Planktothrix spp. In total, 124 strains, isolated from diverse freshwater waterbodies, have been compared regarding variability within Aer biosynthesis genes and the consequences for structural diversity. The high structural variability could be explained by various recombination processes affecting Aer synthesis, above all, the acquisition of accessory enzymes involved in post synthesis modification of the Aer peptide (e.g., halogenases, glycosyltransferases, sulfotransferases) as well as a large-range recombination of Aer biosynthesis genes, probably transferred from the bloom-forming cyanobacterium Microcystis. The Aer structural composition differed between evolutionary Planktothrix lineages, adapted to either shallow or deep waterbodies of the temperate climatic zone. Thus, for the first time among bloom-forming cyanobacteria, chemical diversification of a peptide family related to eco-evolutionary diversification has been described. It is concluded that various Aer peptides resulting from the recombination event act in chemical defense, possibly as a replacement for microcystins.
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Affiliation(s)
- Elisabeth Entfellner
- Research Department for Limnology, Universität Innsbruck, Mondseestrasse 9, 5310 Mondsee, Austria; (E.E.); (K.B.L.B.)
| | - Kathrin B. L. Baumann
- Research Department for Limnology, Universität Innsbruck, Mondseestrasse 9, 5310 Mondsee, Austria; (E.E.); (K.B.L.B.)
| | - Christine Edwards
- CyanoSol Research Group, Pharmacy & Life Sciences, Robert Gordon University, Aberdeen AB10 7GJ, UK;
| | - Rainer Kurmayer
- Research Department for Limnology, Universität Innsbruck, Mondseestrasse 9, 5310 Mondsee, Austria; (E.E.); (K.B.L.B.)
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Bérubé C, Guay LD, Fraser T, Lapointe V, Cardinal S, Biron É. Convenient route to Fmoc-homotyrosine via metallaphotoredox catalysis and its use in the total synthesis of anabaenopeptin cyclic peptides. Org Biomol Chem 2023; 21:9011-9020. [PMID: 37921761 DOI: 10.1039/d3ob01608k] [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: 11/04/2023]
Abstract
Herein, we report the first solid-phase total synthesis of the natural cyclic peptide anabaenopeptin F and the use of metallaphotoredox catalysis to overcome the key challenges associated with the preparation of the non-proteinogenic amino acid homotyrosine contained in these peptides. Starting from L-homoserine, enantiopure Fmoc-protected homotyrosine was prepared in a straightforward manner by metallaphotoredox catalysis with N-Fmoc-(S)-2-amino-4-bromobutanoic acid and 4-tert-butoxybromobenzene partners. The prepared protected amino acid was used in solid-phase peptide synthesis to achieve the total synthesis of anabaenopeptin F and establish the stereochemistry of the isoleucine residue. Protease inhibition studies with the synthesized anabaenopeptin F showed inhibitory activities against carboxypeptidase B in the low nanomolar range. The high convergency of the synthetic methodologies paves the way for the rapid access to N-Fmoc-protected non-proteinogenic and unnatural amino acids and the total synthesis of complex bioactive peptides containing these amino acids.
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Affiliation(s)
- Christopher Bérubé
- Faculté de Pharmacie, Université Laval, Québec, Québec, Canada, G1 V 0A6.
- Laboratory of Medicinal Chemistry, Centre de Recherche du CHU de Québec-Université Laval, 2705 Boulevard Laurier, Québec, Québec, Canada, G1 V 0A6
| | - Louis-David Guay
- Faculté de Pharmacie, Université Laval, Québec, Québec, Canada, G1 V 0A6.
- Laboratory of Medicinal Chemistry, Centre de Recherche du CHU de Québec-Université Laval, 2705 Boulevard Laurier, Québec, Québec, Canada, G1 V 0A6
| | - Tommy Fraser
- Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, 300 allée des Ursulines, Rimouski, Québec, Canada, G5L 3A1
| | - Victor Lapointe
- Faculté de Pharmacie, Université Laval, Québec, Québec, Canada, G1 V 0A6.
- Laboratory of Medicinal Chemistry, Centre de Recherche du CHU de Québec-Université Laval, 2705 Boulevard Laurier, Québec, Québec, Canada, G1 V 0A6
| | - Sébastien Cardinal
- Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, 300 allée des Ursulines, Rimouski, Québec, Canada, G5L 3A1
| | - Éric Biron
- Faculté de Pharmacie, Université Laval, Québec, Québec, Canada, G1 V 0A6.
- Laboratory of Medicinal Chemistry, Centre de Recherche du CHU de Québec-Université Laval, 2705 Boulevard Laurier, Québec, Québec, Canada, G1 V 0A6
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Konkel R, Cegłowska M, Szubert K, Wieczerzak E, Iliakopoulou S, Kaloudis T, Mazur-Marzec H. Structural Diversity and Biological Activity of Cyanopeptolins Produced by Nostoc edaphicum CCNP1411. Mar Drugs 2023; 21:508. [PMID: 37888443 PMCID: PMC10608790 DOI: 10.3390/md21100508] [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: 08/21/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 10/28/2023] Open
Abstract
Cyanopeptolins (CPs) are one of the most commonly occurring class of cyanobacterial nonribosomal peptides. For the majority of these compounds, protease inhibition has been reported. In the current work, the structural diversity of cyanopeptolins produced by Nostoc edaphicum CCNP1411 was explored. As a result, 93 CPs, including 79 new variants, were detected and structurally characterized based on their mass fragmentation spectra. CPs isolated in higher amounts were additionally characterized by NMR. To the best of our knowledge, this is the highest number of cyanopeptides found in one strain. The biological assays performed with the 34 isolated CPs confirmed the significance of the amino acid located between Thr and the unique 3-amino-6-hydroxy-2-piperidone (Ahp) on the activity of the compounds against serine protease and HeLa cancer cells.
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Affiliation(s)
- Robert Konkel
- Department of Marine Biology and Biotechnology, Faculty of Oceanography and Geography, University of Gdańsk, PL-81378 Gdynia, Poland; (R.K.); (K.S.)
| | - Marta Cegłowska
- Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81712 Sopot, Poland;
| | - Karolina Szubert
- Department of Marine Biology and Biotechnology, Faculty of Oceanography and Geography, University of Gdańsk, PL-81378 Gdynia, Poland; (R.K.); (K.S.)
| | - Ewa Wieczerzak
- Department of Biomedical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, PL-80308 Gdańsk, Poland;
| | - Sofia Iliakopoulou
- Department of Sustainable Agriculture, University of Patras, GR-30131 Agrinio, Greece;
| | - Triantafyllos Kaloudis
- Institute of Nanoscience & Nanotechnology, NCSR Demokritos, GR-15310 Agia Paraskevi, Greece;
- Laboratory of Organic Micropollutants, Water Quality Control Department, EYDAP SA, Menidi, GR-13674 Athens, Greece
| | - Hanna Mazur-Marzec
- Department of Marine Biology and Biotechnology, Faculty of Oceanography and Geography, University of Gdańsk, PL-81378 Gdynia, Poland; (R.K.); (K.S.)
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Asamizu S, Ijichi S, Hoshino S, Jo H, Takahashi H, Itoh Y, Matsumoto S, Onaka H. Stable Isotope-Guided Metabolomics Reveals Polar-Functionalized Fatty-Acylated RiPPs from Streptomyces. ACS Chem Biol 2022; 17:2936-2944. [PMID: 36112882 DOI: 10.1021/acschembio.2c00601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Ribosomally synthesized and posttranslationally modified peptides (RiPPs) with polar-functionalized fatty acyl groups are a rarely found untapped class of natural products. Although polar-functionalized fatty-acylated RiPPs (PFARs) have potential as antimicrobial agents, the repertoire is still limited. Therefore, expanding the chemical space is expected to contribute to the development of pharmaceutical agents. In this study, we performed genome mining and stable isotope-guided comparative metabolomics to discover new PFAR natural products. We focused on the feature that PFARs incorporate l-arginine or l-lysine as the starter unit of the fatty acyl group and fed 13C6,15N4-l-arginine or 13C6,15N2-l-lysine to bacterial cultures. Metabolites were extracted and compared with those extracted from nonlabeled l-arginine or l-lysine fed cultures. We identified putative PFARs and successfully isolated solabiomycin A and B from Streptomyces lydicus NBRC 13 058 and albopeptin B from Streptomyces nigrescens HEK616, which contained a sulfoxide group in the labionin moiety. The gene disruption experiment indicated that solS, which encodes a putative flavin adenine dinucleotide (FAD)-nicotinamide adenine dinucleotide (phosphate) (NAD(P))-binding protein, is involved in the sulfoxidation of aryl sulfides. The solabiomycins showed antibacterial activity against Gram-positive bacteria, including Mycobacterium tuberculosis H37Rv with a minimum 95% inhibitory concentration (MIC95) of 3.125 μg/mL, suggesting their potential as antituberculosis agents.
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Affiliation(s)
- Shumpei Asamizu
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology (CRIIM), The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
| | - Shinta Ijichi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
| | - Shotaro Hoshino
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
| | - Hansaem Jo
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
| | - Hidenori Takahashi
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan
| | - Yuko Itoh
- Department of Bacteriology, Niigata University School of Medicine, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-9510, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University School of Medicine, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-9510, Japan.,Laboratory of Tuberculosis, Institute of Tropical Disease, Universitas Airlangga, Kampus C Jl., Mulyorejo, Surabaya 60115, Indonesia
| | - Hiroyasu Onaka
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology (CRIIM), The University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
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7
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Konkel R, Grabski M, Cegłowska M, Wieczerzak E, Węgrzyn G, Mazur-Marzec H. Anabaenopeptins from Nostoc edaphicum CCNP1411. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12346. [PMID: 36231642 PMCID: PMC9564503 DOI: 10.3390/ijerph191912346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Cyanobacteria of the Nostoc genus belong to the most prolific sources of bioactive metabolites. In our previous study on Nostoc edaphicum strain CCNP1411, the occurrence of cyanopeptolins and nostocyclopeptides was documented. In the current work, the production of anabaenopeptins (APs) by the strain was studied using genetic and chemical methods. Compatibility between the analysis of the apt gene cluster and the structure of the identified APs was found. Three of the APs, including two new variants, were isolated as pure compounds and tested against four serine proteases and carboxypeptidase A (CPA). The in vitro enzymatic assays showed a typical activity of this class of cyanopeptides, i.e., the most pronounced effects were observed in the case of CPA. The activity of the detected compounds against important metabolic enzymes confirms the pharmaceutical potential of anabaenopeptins.
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Affiliation(s)
- Robert Konkel
- Division of Marine Biotechnology, Institute of Oceanography, University of Gdańsk, M. J. Piłsudskiego 46, PL-81378 Gdynia, Poland
| | - Michał Grabski
- Department of Molecular Biology, University of Gdansk, Wita Stwosza 59, PL-80308 Gdańsk, Poland
| | - Marta Cegłowska
- Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81712 Sopot, Poland
| | - Ewa Wieczerzak
- Department of Biomedical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, PL-80308 Gdańsk, Poland
| | - Grzegorz Węgrzyn
- Department of Molecular Biology, University of Gdansk, Wita Stwosza 59, PL-80308 Gdańsk, Poland
| | - Hanna Mazur-Marzec
- Division of Marine Biotechnology, Institute of Oceanography, University of Gdańsk, M. J. Piłsudskiego 46, PL-81378 Gdynia, Poland
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Zervou SK, Kaloudis T, Gkelis S, Hiskia A, Mazur-Marzec H. Anabaenopeptins from Cyanobacteria in Freshwater Bodies of Greece. Toxins (Basel) 2021; 14:4. [PMID: 35050981 PMCID: PMC8781842 DOI: 10.3390/toxins14010004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/06/2021] [Accepted: 12/15/2021] [Indexed: 12/27/2022] Open
Abstract
Cyanobacteria are photosynthetic microorganisms that are able to produce a large number of secondary metabolites. In freshwaters, under favorable conditions, they can rapidly multiply, forming blooms, and can release their toxic/bioactive metabolites in water. Among them, anabaenopeptins (APs) are a less studied class of cyclic bioactive cyanopeptides. The occurrence and structural variety of APs in cyanobacterial blooms and cultured strains from Greek freshwaters were investigated. Cyanobacterial extracts were analyzed with LC-qTRAP MS/MS using information-dependent acquisition in enhanced ion product mode in order to obtain the fragmentation mass spectra of APs. Thirteen APs were detected, and their possible structures were annotated based on the elucidation of fragmentation spectra, including three novel ones. APs were present in the majority of bloom samples (91%) collected from nine Greek lakes during different time periods. A large variety of APs was observed, with up to eight congeners co-occurring in the same sample. AP F (87%), Oscillamide Y (87%) and AP B (65%) were the most frequently detected congeners. Thirty cyanobacterial strain cultures were also analyzed. APs were only detected in one strain (Microcystis ichtyoblabe). The results contribute to a better understanding of APs produced by freshwater cyanobacteria and expand the range of structurally characterized APs.
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Affiliation(s)
- Sevasti-Kiriaki Zervou
- Laboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Centre for Scientific Research “Demokritos”, Patriarchou Grigoriou E & 27 Neapoleos Str., 15310 Athens, Greece; (T.K.); (A.H.)
| | - Triantafyllos Kaloudis
- Laboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Centre for Scientific Research “Demokritos”, Patriarchou Grigoriou E & 27 Neapoleos Str., 15310 Athens, Greece; (T.K.); (A.H.)
| | - Spyros Gkelis
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Anastasia Hiskia
- Laboratory of Photo-Catalytic Processes and Environmental Chemistry, Institute of Nanoscience & Nanotechnology, National Centre for Scientific Research “Demokritos”, Patriarchou Grigoriou E & 27 Neapoleos Str., 15310 Athens, Greece; (T.K.); (A.H.)
| | - Hanna Mazur-Marzec
- Division of Marine Biotechnology, University of Gdansk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland;
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9
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Anabaenopeptins: What We Know So Far. Toxins (Basel) 2021; 13:toxins13080522. [PMID: 34437393 PMCID: PMC8402340 DOI: 10.3390/toxins13080522] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/19/2021] [Accepted: 05/25/2021] [Indexed: 12/14/2022] Open
Abstract
Cyanobacteria are microorganisms with photosynthetic mechanisms capable of colonizing several distinct environments worldwide. They can produce a vast spectrum of bioactive compounds with different properties, resulting in an improved adaptative capacity. Their richness in secondary metabolites is related to their unique and diverse metabolic apparatus, such as Non-Ribosomal Peptide Synthetases (NRPSs). One important class of peptides produced by the non-ribosomal pathway is anabaenopeptins. These cyclic hexapeptides demonstrated inhibitory activity towards phosphatases and proteases, which could be related to their toxicity and adaptiveness against zooplankters and crustaceans. Thus, this review aims to identify key features related to anabaenopeptins, including the diversity of their structure, occurrence, the biosynthetic steps for their production, ecological roles, and biotechnological applications.
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10
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Marmen S, Fadeev E, Al Ashhab A, Benet-Perelberg A, Naor A, Patil HJ, Cytryn E, Viner-Mozzini Y, Sukenik A, Lalzar M, Sher D. Seasonal Dynamics Are the Major Driver of Microbial Diversity and Composition in Intensive Freshwater Aquaculture. Front Microbiol 2021; 12:679743. [PMID: 34248892 PMCID: PMC8264503 DOI: 10.3389/fmicb.2021.679743] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/31/2021] [Indexed: 01/04/2023] Open
Abstract
Aquaculture facilities such as fishponds are one of the most anthropogenically impacted freshwater ecosystems. The high fish biomass reared in aquaculture is associated with an intensive input into the water of fish-feed and fish excrements. This nutrients load may affect the microbial community in the water, which in turn can impact the fish health. To determine to what extent aquaculture practices and natural seasonal cycles affect the microbial populations, we characterized the microbiome of an inter-connected aquaculture system at monthly resolution, over 3 years. The system comprised two fishponds, where fish are grown, and an operational water reservoir in which fish are not actively stocked. Clear natural seasonal cycles of temperature and inorganic nutrients concentration, as well as recurring cyanobacterial blooms during summer, were observed in both the fishponds and the reservoir. The structure of the aquatic bacterial communities in the system, characterized using 16S rRNA sequencing, was explained primarily by the natural seasonality, whereas aquaculture-related parameters had only a minor explanatory power. However, the cyanobacterial blooms were characterized by different cyanobacterial clades dominating at each fishpond, possibly in response to distinct nitrogen and phosphate ratios. In turn, nutrient ratios may have been affected by the magnitude of fish feed input. Taken together, our results show that, even in strongly anthropogenically impacted aquatic ecosystems, the structure of bacterial communities is mainly driven by the natural seasonality, with more subtle effects of aquaculture-related factors.
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Affiliation(s)
- Sophi Marmen
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
| | - Eduard Fadeev
- Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
| | - Ashraf Al Ashhab
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
- Microbial Metagenomics Division, The Dead Sea and Arava Science Center, Masada, Israel
| | - Ayana Benet-Perelberg
- Dor Aquaculture Research Station, Fisheries Department, Israel Ministry of Agriculture and Rural Development, Dor, Israel
| | - Alon Naor
- Dor Aquaculture Research Station, Fisheries Department, Israel Ministry of Agriculture and Rural Development, Dor, Israel
| | - Hemant J. Patil
- Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel
| | - Eddie Cytryn
- Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel
| | - Yehudit Viner-Mozzini
- The Yigal Allon Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal, Israel
| | - Assaf Sukenik
- The Yigal Allon Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal, Israel
| | - Maya Lalzar
- Bioinformatics Service Unit, University of Haifa, Haifa, Israel
| | - Daniel Sher
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, Israel
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11
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Mata G, Kalnmals CA. Total Synthesis in the Trost Laboratories: Selected Milestones From the Past Twenty Years. Isr J Chem 2021. [DOI: 10.1002/ijch.202100022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guillaume Mata
- Arcus Biosciences, Inc. 3928 Point Eden Way Hayward CA 94545 USA
| | - Christopher A. Kalnmals
- Crop Protection Discovery Corteva Agriscience 9330 Zionsville Road Indianapolis IN 46268 USA
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12
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Köcher S, Resch S, Kessenbrock T, Schrapp L, Ehrmann M, Kaiser M. From dolastatin 13 to cyanopeptolins, micropeptins, and lyngbyastatins: the chemical biology of Ahp-cyclodepsipeptides. Nat Prod Rep 2021; 37:163-174. [PMID: 31451830 DOI: 10.1039/c9np00033j] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: 1989 up to 2019 Ahp-cyclodepsipeptides (also known as Ahp-containing cyclodepsipeptides, cyanopeptolins, micropeptins, microginines, and lyngbyastatins, and by many other names) are a family of non-ribosomal peptide synthesis (NRPS)-derived natural products with potent serine protease inhibitory properties. Here, we review their isolation and structural elucidation from natural sources as well as studies of their biosynthesis, molecular mode of action, and use in drug discovery efforts. Accordingly, this summary aims to provide a comprehensive overview of the current state-of-the-art Ahp-cyclodepsipeptide research.
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Affiliation(s)
- Steffen Köcher
- Chemical Biology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany.
| | - Sarah Resch
- Chemical Biology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany.
| | - Till Kessenbrock
- Chemical Biology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany.
| | - Lukas Schrapp
- Chemical Biology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany.
| | - Michael Ehrmann
- Microbiology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany
| | - Markus Kaiser
- Chemical Biology, Zentrum für Medizinische Biotechnologie (ZMB), Faculty of Biology, Universität Duisburg-Essen, Universitätsstr. 2, 45117 Essen, Germany.
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13
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Berlinck RGS, Bernardi DI, Fill T, Fernandes AAG, Jurberg ID. The chemistry and biology of guanidine secondary metabolites. Nat Prod Rep 2020; 38:586-667. [PMID: 33021301 DOI: 10.1039/d0np00051e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: 2017-2019Guanidine natural products isolated from microorganisms, marine invertebrates and terrestrial plants, amphibians and spiders, represented by non-ribosomal peptides, guanidine-bearing polyketides, alkaloids, terpenoids and shikimic acid derived, are the subject of this review. The topics include the discovery of new metabolites, total synthesis of natural guanidine compounds, biological activity and mechanism-of-action, biosynthesis and ecological functions.
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Affiliation(s)
- Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP 13560-970, São Carlos, SP, Brazil.
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14
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Riba M, Kiss-Szikszai A, Gonda S, Parizsa P, Deák B, Török P, Valkó O, Felföldi T, Vasas G. Chemotyping of terrestrial Nostoc-like isolates from alkali grassland areas by non-targeted peptide analysis. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Thuan NH, An TT, Shrestha A, Canh NX, Sohng JK, Dhakal D. Recent Advances in Exploration and Biotechnological Production of Bioactive Compounds in Three Cyanobacterial Genera: Nostoc, Lyngbya, and Microcystis. Front Chem 2019; 7:604. [PMID: 31552222 PMCID: PMC6734169 DOI: 10.3389/fchem.2019.00604] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/16/2019] [Indexed: 12/21/2022] Open
Abstract
Cyanobacteria, are only Gram-negative bacteria with the capacity of oxygenic photosynthesis, so termed as “Cyanophyta” or “blue-green algae.” Their habitat is ubiquitous, which includes the diverse environments, such as soil, water, rock and other organisms (symbiosis, commensalism, or parasitism, etc.,). They are characterized as prominent producers of numerous types of important compounds with anti-microbial, anti-viral, anti-inflammatory and anti-tumor properties. Among the various cyanobacterial genera, members belonging to genera Nostoc, Lyngbya, and Microcystis possess greater attention. The major reason for that is the strains belonging to these genera produce the compounds with diverse activities/structures, including compounds in preclinical and/or clinical trials (cryptophycin and curacin), or the compounds retaining unique activities such as protease inhibitor (micropeptins and aeruginosins). Most of these compounds were tested for their efficacy and mechanism of action(MOA) through in vitro and/or in vivo studies. Recently, the advances in culture techniques of these cyanobacteria, and isolation, purification, and chromatographic analysis of their compounds have revealed insurmountable novel bioactive compounds from these cyanobacteria. This review provides comprehensive update on the origin, isolation and purification methods, chemical structures and biological activities of the major compounds from Nostoc, Lyngbya, and Microcystis. In addition, multi-omics approaches and biotechnological production of compounds from selected cyanobacterial genera have been discussed.
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Affiliation(s)
- Nguyen Huy Thuan
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, Danang, Vietnam
| | - Tran Tuan An
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, Danang, Vietnam
| | - Anil Shrestha
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea
| | - Nguyen Xuan Canh
- Faculty of Biotechnology, Vietnam National University of Agriculture, Gialam, Hanoi, Vietnam
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea.,Department of BT-Convergent Pharmaceutical Engineering, Sun Moon University, Chungnam, South Korea
| | - Dipesh Dhakal
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea
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Diagnosing Microcystin Intoxication of Canines: Clinicopathological Indications, Pathological Characteristics, and Analytical Detection in Postmortem and Antemortem Samples. Toxins (Basel) 2019; 11:toxins11080456. [PMID: 31382600 PMCID: PMC6722975 DOI: 10.3390/toxins11080456] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/28/2019] [Accepted: 08/01/2019] [Indexed: 12/24/2022] Open
Abstract
In the summer of 2018, six dogs exposed to a harmful algal bloom (HAB) of Microcystis in Martin County Florida (USA) developed clinicopathological signs of microcystin (MC) intoxication (i.e., acute vomiting, diarrhea, severe thrombocytopenia, elevated alanine aminotransferase, hemorrhage). Successful supportive veterinary care was provided and led to survival of all but one patient. Confirmation of MC intoxication was made through interpretation of clinicopathological abnormalities, pathological examination of tissues, microscopy (vomitus), and analytical MC testing of antemortem/postmortem samples (vomitus, blood, urine, bile, liver, kidney, hair). Gross and microscopic examination of the deceased patient confirmed massive hepatic necrosis, mild multifocal renal tubular necrosis, and hemorrhage within multiple organ systems. Microscopy of a vomitus sample confirmed the presence of Microcystis. Three analytical MC testing approaches were used, including the MMPB (2-methyl-3-methoxy-4-phenylbutyric acid) technique, targeted congener analysis (e.g., liquid chromatography tandem-mass spectrometry of MC-LR), and enzyme-linked immunosorbent assay (ELISA). Total Adda MCs (as MMPB) were confirmed in the liver, bile, kidney, urine, and blood of the deceased dog. Urinalysis (MMPB) of one surviving dog showed a high level of MCs (32,000 ng mL−1) 1-day post exposure, with MCs detectable >2 months post exposure. Furthermore, hair from a surviving dog was positive for MMPB, illustrating another testable route of MC elimination in canines. The described cases represent the first use of urine as an antemortem, non-invasive specimen to diagnose microcystin toxicosis. Antemortem diagnostic testing to confirm MC intoxication cases, whether acute or chronic, is crucial for providing optimal supportive care and mitigating MC exposure.
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Huang IS, Zimba PV. Cyanobacterial bioactive metabolites-A review of their chemistry and biology. HARMFUL ALGAE 2019; 86:139-209. [PMID: 31358273 DOI: 10.1016/j.hal.2019.05.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/14/2018] [Accepted: 11/16/2018] [Indexed: 06/10/2023]
Abstract
Cyanobacterial blooms occur when algal densities exceed baseline population concentrations. Cyanobacteria can produce a large number of secondary metabolites. Odorous metabolites affect the smell and flavor of aquatic animals, whereas bioactive metabolites cause a range of lethal and sub-lethal effects in plants, invertebrates, and vertebrates, including humans. Herein, the bioactivity, chemistry, origin, and biosynthesis of these cyanobacterial secondary metabolites were reviewed. With recent revision of cyanobacterial taxonomy by Anagnostidis and Komárek as part of the Süβwasserflora von Mitteleuropa volumes 19(1-3), names of many cyanobacteria that produce bioactive compounds have changed, thereby confusing readers. The original and new nomenclature are included in this review to clarify the origins of cyanobacterial bioactive compounds. Due to structural similarity, the 157 known bioactive classes produced by cyanobacteria have been condensed to 55 classes. This review will provide a basis for more formal procedures to adopt a logical naming system. This review is needed for efficient management of water resources to understand, identify, and manage cyanobacterial harmful algal bloom impacts.
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Affiliation(s)
- I-Shuo Huang
- Center for Coastal Studies, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.
| | - Paul V Zimba
- Center for Coastal Studies, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
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18
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Demay J, Bernard C, Reinhardt A, Marie B. Natural Products from Cyanobacteria: Focus on Beneficial Activities. Mar Drugs 2019; 17:E320. [PMID: 31151260 PMCID: PMC6627551 DOI: 10.3390/md17060320] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 12/28/2022] Open
Abstract
Cyanobacteria are photosynthetic microorganisms that colonize diverse environments worldwide, ranging from ocean to freshwaters, soils, and extreme environments. Their adaptation capacities and the diversity of natural products that they synthesize, support cyanobacterial success in colonization of their respective ecological niches. Although cyanobacteria are well-known for their toxin production and their relative deleterious consequences, they also produce a large variety of molecules that exhibit beneficial properties with high potential in various fields (e.g., a synthetic analog of dolastatin 10 is used against Hodgkin's lymphoma). The present review focuses on the beneficial activities of cyanobacterial molecules described so far. Based on an analysis of 670 papers, it appears that more than 90 genera of cyanobacteria have been observed to produce compounds with potentially beneficial activities in which most of them belong to the orders Oscillatoriales, Nostocales, Chroococcales, and Synechococcales. The rest of the cyanobacterial orders (i.e., Pleurocapsales, Chroococcidiopsales, and Gloeobacterales) remain poorly explored in terms of their molecular diversity and relative bioactivity. The diverse cyanobacterial metabolites possessing beneficial bioactivities belong to 10 different chemical classes (alkaloids, depsipeptides, lipopeptides, macrolides/lactones, peptides, terpenes, polysaccharides, lipids, polyketides, and others) that exhibit 14 major kinds of bioactivity. However, no direct relationship between the chemical class and the respective bioactivity of these molecules has been demonstrated. We further selected and specifically described 47 molecule families according to their respective bioactivities and their potential uses in pharmacology, cosmetology, agriculture, or other specific fields of interest. With this up-to-date review, we attempt to present new perspectives for the rational discovery of novel cyanobacterial metabolites with beneficial bioactivity.
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Affiliation(s)
- Justine Demay
- UMR 7245 MCAM, Muséum National d'Histoire Naturelle-CNRS, Paris, 12 rue Buffon, CP 39, 75231 Paris CEDEX 05, France.
- Thermes de Balaruc-les-Bains, 1 rue du Mont Saint-Clair BP 45, 34540 Balaruc-Les-Bains, France.
| | - Cécile Bernard
- UMR 7245 MCAM, Muséum National d'Histoire Naturelle-CNRS, Paris, 12 rue Buffon, CP 39, 75231 Paris CEDEX 05, France.
| | - Anita Reinhardt
- Thermes de Balaruc-les-Bains, 1 rue du Mont Saint-Clair BP 45, 34540 Balaruc-Les-Bains, France.
| | - Benjamin Marie
- UMR 7245 MCAM, Muséum National d'Histoire Naturelle-CNRS, Paris, 12 rue Buffon, CP 39, 75231 Paris CEDEX 05, France.
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19
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Huang IS, Zimba PV. Cyanobacterial bioactive metabolites-A review of their chemistry and biology. HARMFUL ALGAE 2019; 83:42-94. [PMID: 31097255 DOI: 10.1016/j.hal.2018.11.008] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/14/2018] [Accepted: 11/16/2018] [Indexed: 06/09/2023]
Abstract
Cyanobacterial blooms occur when algal densities exceed baseline population concentrations. Cyanobacteria can produce a large number of secondary metabolites. Odorous metabolites affect the smell and flavor of aquatic animals, whereas bioactive metabolites cause a range of lethal and sub-lethal effects in plants, invertebrates, and vertebrates, including humans. Herein, the bioactivity, chemistry, origin, and biosynthesis of these cyanobacterial secondary metabolites were reviewed. With recent revision of cyanobacterial taxonomy by Anagnostidis and Komárek as part of the Süβwasserflora von Mitteleuropa volumes 19(1-3), names of many cyanobacteria that produce bioactive compounds have changed, thereby confusing readers. The original and new nomenclature are included in this review to clarify the origins of cyanobacterial bioactive compounds. Due to structural similarity, the 157 known bioactive classes produced by cyanobacteria have been condensed to 55 classes. This review will provide a basis for more formal procedures to adopt a logical naming system. This review is needed for efficient management of water resources to understand, identify, and manage cyanobacterial harmful algal bloom impacts.
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Affiliation(s)
- I-Shuo Huang
- Center for Coastal Studies, Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.
| | - Paul V Zimba
- Center for Coastal Studies, Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
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20
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Beversdorf LJ, Rude K, Weirich CA, Bartlett SL, Seaman M, Kozik C, Biese P, Gosz T, Suha M, Stempa C, Shaw C, Hedman C, Piatt JJ, Miller TR. Analysis of cyanobacterial metabolites in surface and raw drinking waters reveals more than microcystin. WATER RESEARCH 2018; 140:280-290. [PMID: 29729580 DOI: 10.1016/j.watres.2018.04.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/10/2018] [Accepted: 04/14/2018] [Indexed: 05/26/2023]
Abstract
Freshwater cyanobacterial blooms are becoming increasingly problematic in regions that rely on surface waters for drinking water production. Microcystins (MCs) are toxic peptides produced by multiple cyanobacterial genera with a global occurrence. Cyanobacteria also produce a variety of other toxic and/or otherwise bioactive peptides (TBPs) that have gained less attention including cyanopeptolins (Cpts), anabaenopeptins (Apts), and microginins (Mgn). In this study, we compared temporal and spatial trends of four MCs (MCLR, MCRR, MCYR, MCLA), three Cpts (Cpt1020, Cpt1041, Cpt1007), two Apts (AptF, AptB), and Mgn690 in raw drinking water and at six surface water locations above these drinking water intakes in a eutrophic lake. All four MC congeners and five of six TBPs were detected in lake and raw drinking water. Across all samples, MCLR was the most frequently detected metabolite (100% of samples) followed by MCRR (97%) > Cpt1007 (74%) > MCYR (69%) > AptF (67%) > MCLA (61%) > AptB (54%) > Mgn690 (29%) and Cpt1041 (15%). Mean concentrations of MCs, Apts, and Cpts into two drinking water intakes were 3.9 ± 4.7, 0.14 ± 0.21, and 0.38 ± 0.92, respectively. Mean concentrations in surface water were significantly higher (p < 0.05) than in drinking water intakes for MCs but not for Cpts and Apts. Temporal trends in MCs, Cpts, and Apts in the two raw drinking water intakes were significantly correlated (p < 0.05) with measures of cell abundance (chlorophyll-a, Microcystis cell density), UV absorbance, and turbidity in surface water. This study expands current information about cyanobacterial TBPs that occur in lakes and that enter drinking water treatment plants and underscores the need to determine the fate of less studied cyanobacterial metabolites during drinking water treatment that may exacerbate toxicity of more well-known cyanobacterial toxins.
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Affiliation(s)
- Lucas J Beversdorf
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Kayla Rude
- Department of Chemistry, Carroll University, Waukesha, WI, USA
| | - Chelsea A Weirich
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Sarah L Bartlett
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Mary Seaman
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Christine Kozik
- Department of Biological Sciences, University of Wisconsin - Milwaukee, WI, USA
| | - Peter Biese
- Menasha Drinking Water Treatment Plant, Menasha, WI, USA
| | - Timothy Gosz
- Menasha Drinking Water Treatment Plant, Menasha, WI, USA
| | - Michael Suha
- Appleton Drinking Water Treatment Plant, Menasha, WI, USA
| | | | | | - Curtis Hedman
- Wisconsin State Laboratory of Hygiene, Madison, WI, USA
| | - Joseph J Piatt
- Department of Chemistry, Carroll University, Waukesha, WI, USA
| | - Todd R Miller
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
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21
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Cyanopeptolins with Trypsin and Chymotrypsin Inhibitory Activity from the Cyanobacterium Nostoc edaphicum CCNP1411. Mar Drugs 2018; 16:md16070220. [PMID: 29949853 PMCID: PMC6070996 DOI: 10.3390/md16070220] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 12/15/2022] Open
Abstract
Cyanopeptolins (CPs) are one of the most frequently occurring cyanobacterial peptides, many of which are inhibitors of serine proteases. Some CP variants are also acutely toxic to aquatic organisms, especially small crustaceans. In this study, thirteen CPs, including twelve new variants, were detected in the cyanobacterium Nostoc edaphicum CCNP1411 isolated from the Gulf of Gdańsk (southern Baltic Sea). Structural elucidation was performed by tandem mass spectrometry with verification by NMR for CP962 and CP985. Trypsin and chymotrypsin inhibition assays confirmed the significance of the residue adjacent to 3-amino-6-hydroxy-2-piperidone (Ahp) for the activity of the peptides. Arginine-containing CPs (CPs-Arg²) inhibited trypsin at low IC50 values (0.24⁻0.26 µM) and showed mild activity against chymotrypsin (IC50 3.1⁻3.8 µM), while tyrosine-containing CPs (CPs-Tyr²) were selectively and potently active against chymotrypsin (IC50 0.26 µM). No degradation of the peptides was observed during the enzyme assays. Neither of the CPs were active against thrombin, elastase or protein phosphatase 1. Two CPs (CP962 and CP985) had no cytotoxic effects on MCF-7 breast cancer cells. Strong and selective activity of the new cyanopeptolin variants makes them potential candidates for the development of drugs against metabolic disorders and other diseases.
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22
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Gallegos DA, Saurí J, Cohen RD, Wan X, Videau P, Vallota-Eastman AO, Shaala LA, Youssef DTA, Williamson RT, Martin GE, Philmus B, Sikora AE, Ishmael JE, McPhail KL. Jizanpeptins, Cyanobacterial Protease Inhibitors from a Symploca sp. Cyanobacterium Collected in the Red Sea. JOURNAL OF NATURAL PRODUCTS 2018; 81:1417-1425. [PMID: 29808677 PMCID: PMC7847313 DOI: 10.1021/acs.jnatprod.8b00117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Jizanpeptins A-E (1-5) are micropeptin depsipeptides isolated from a Red Sea specimen of a Symploca sp. cyanobacterium. The planar structures of the jizanpeptins were established using NMR spectroscopy and mass spectrometry and contain 3-amino-6-hydroxy-2-piperidone (Ahp) as one of eight residues in a typical micropeptin motif, as well as a side chain terminal glyceric acid sulfate moiety. The absolute configurations of the jizanpeptins were assigned using a combination of Marfey's methodology and chiral-phase HPLC analysis of hydrolysis products compared to commercial and synthesized standards. Jizanpeptins A-E showed specific inhibition of the serine protease trypsin (IC50 = 72 nM to 1 μM) compared to chymotrypsin (IC50 = 1.4 to >10 μM) in vitro and were not overtly cytotoxic to HeLa cervical or NCI-H460 lung cancer cell lines at micromolar concentrations.
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Affiliation(s)
- David A. Gallegos
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Josep Saurí
- Structure Elucidation Group, Process and Analytical Research and Development, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Ryan D. Cohen
- Structure Elucidation Group, Process and Analytical Research and Development, Merck & Co., Inc.,126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Xuemei Wan
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Patrick Videau
- Department of Biology, College of Arts and Sciences, Dakota State University, Madison, SD 57042
| | - Alec O. Vallota-Eastman
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Lamiaa A. Shaala
- Suez Canal University Hospital, Suez Canal University, Ismailia 41522, Egypt
| | - Diaa T. A. Youssef
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - R. Thomas Williamson
- Structure Elucidation Group, Process and Analytical Research and Development, Merck & Co., Inc.,126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Gary E. Martin
- Structure Elucidation Group, Process and Analytical Research and Development, Merck & Co., Inc.,126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Benjamin Philmus
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Aleksandra E. Sikora
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jane E. Ishmael
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Kerry L. McPhail
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
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Strangman WK, Stewart AK, Herring MC, Wright JL. Identification of the new chymotrypsin inhibitor micropeptin 996 by metabolomics-guided analysis. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Inhibitors of Serine Proteases from a Microcystis sp. Bloom Material Collected from Timurim Reservoir, Israel. Mar Drugs 2017; 15:md15120371. [PMID: 29194403 PMCID: PMC5742831 DOI: 10.3390/md15120371] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 01/13/2023] Open
Abstract
Two new natural products, micropeptin TR1058 (1) and aeruginosin TR642 (2), were isolated from the hydrophilic extract of bloom material of Microcystis sp. collected from the Timurim water reservoir in Israel. The structures of compounds 1 and 2 were determined using 1D and 2D NMR spectroscopy and HR ESI MS and MS/MS techniques. Micropeptin TR1058 (1) was extremely unstable under the isolation conditions, and several degradation products were identified. NMR analysis of aeruginosin TR642 (2) revealed a mixture of eight isomers, and elucidation of its structure was challenging. Aeruginosin TR642 contains a 4,5-didehydroaraginal subunit that has not been described before. Micropeptin TR1058 (1) inhibited chymotrypsin with an IC50 of 6.78 µM, and aeruginosin TR642 (2) inhibited trypsin and thrombin with inhibition concentration (IC50) values of 3.80 and 0.85 µM, respectively. The structures and biological activities of the new compounds are discussed.
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25
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Scherer M, Gademann K. Total Synthesis and Structural Revision of Aeruginosin KT608A. Org Lett 2017; 19:3915-3918. [DOI: 10.1021/acs.orglett.7b01822] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel Scherer
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
| | - Karl Gademann
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
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Cyanobacterial Toxic and Bioactive Peptides in Freshwater Bodies of Greece: Concentrations, Occurrence Patterns, and Implications for Human Health. Mar Drugs 2015; 13:6319-35. [PMID: 26473888 PMCID: PMC4626692 DOI: 10.3390/md13106319] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/29/2015] [Accepted: 09/29/2015] [Indexed: 11/17/2022] Open
Abstract
Cyanobacterial harmful algal blooms represent one of the most conspicuous waterborne microbial hazards in aquatic environments mostly due to the production of toxic secondary metabolites, mainly microcystins (MCs). Other bioactive peptides are frequently found in cyanobacterial blooms, yet their concentration and ecological relevance is still unknown. In this paper we studied the presence and concentration of cyanobacterial peptides (microcystins, anabaenopeptins, anabaenopeptilides) in 36 Greek freshwater bodies, using HPLC-DAD, ELISA, and PP1IA. Microcystins were found in more than 90% of the samples investigated, indicating that microcystin-producing strains seem to also occur in lakes without blooms. Microcystins MC-RR, MC-LR, and MC-YR were the main toxin constituents of the bloom samples. Anabaenopeptin A and B were predominant in some samples, whereas anabaenopeptolide 90A was the only peptide found in Lake Mikri Prespa. The intracellular concentrations of anabaenopeptins produced by cyanobacterial bloom populations are determined for the first time in this study; the high (>1000 µg·L(-1)) anabaenopeptin concentration found indicates there may be some impacts, at least on the ecology and the food web structure of the aquatic ecosystems. The maximum intracellular MC values measured in Lakes Kastoria and Pamvotis, exceeding 10,000 µg·L(-1), are among the highest reported.
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