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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, 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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3
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Deore P, Barlow CK, Schittenhelm RB, Beardall J, Noronha S. Profiling of grazed cultures of the chlorophyte alga Dunaliella tertiolecta using an untargeted LC-MS approach. JOURNAL OF PHYCOLOGY 2022; 58:568-581. [PMID: 35506918 DOI: 10.1111/jpy.13254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Extracellular signals are reported to mediate chemical cross-talk among pelagic microbes, including microalgal prey and predators. Water-soluble mediator compounds play a crucial role in extracellular communication which is vital for prey recognition, attraction, capture, and predator deterrence. A range of exo-metabolites including oxylipins and vitamins are released by prey in response to grazing stress. The temporal dynamics of such exo-metabolites largely remains unknown, especially in large-scale cultivation of microalgae such as closed or open ponds. In open ponds, infestation of predators is almost inevitable but highly undesirable due to the imminent threat of culture collapse. The early production of exo-metabolites emitted by microalgal prey in response to predator attack could be leveraged as diagnostic markers of possible culture collapse. This study uses an untargeted approach for temporal profiling of Dunaliella tertiolecta-specific exo-metabolites under grazing pressure from Oxyrrhis marina. We report 24 putatively identified metabolites, belonging to various classes such as short peptides, lipids, indole-derivatives, and free amino acids, as potential markers of grazing-mediated stress. In addition, this study outlines a clear methodology for screening of exo-metabolites in marine algal samples, the analysis of which is frequently hindered by high salt concentrations. In future, a chemistry-based targeted detection of these metabolites could enable a quick and on-site screening of predators in microalgal cultures.
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Affiliation(s)
- Pranali Deore
- IITB-MONASH Research Academy, Mumbai, 400076, India
- School of Biological Sciences, Monash University, Clayton, Victoria, 3800, Australia
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - Christopher K Barlow
- Monash Proteomic and Metabolomic Facility, Monash University, Clayton, Victoria, 3800, Australia
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, 3800, Australia
| | - Ralf B Schittenhelm
- Monash Proteomic and Metabolomic Facility, Monash University, Clayton, Victoria, 3800, Australia
| | - John Beardall
- School of Biological Sciences, Monash University, Clayton, Victoria, 3800, Australia
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Cheras, 56000, Malaysia
| | - Santosh Noronha
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
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4
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Marine Cyclic Peptides: Antimicrobial Activity and Synthetic Strategies. Mar Drugs 2022; 20:md20060397. [PMID: 35736200 PMCID: PMC9230156 DOI: 10.3390/md20060397] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 01/29/2023] Open
Abstract
Oceans are a rich source of structurally unique bioactive compounds from the perspective of potential therapeutic agents. Marine peptides are a particularly interesting group of secondary metabolites because of their chemistry and wide range of biological activities. Among them, cyclic peptides exhibit a broad spectrum of antimicrobial activities, including against bacteria, protozoa, fungi, and viruses. Moreover, there are several examples of marine cyclic peptides revealing interesting antimicrobial activities against numerous drug-resistant bacteria and fungi, making these compounds a very promising resource in the search for novel antimicrobial agents to revert multidrug-resistance. This review summarizes 174 marine cyclic peptides with antibacterial, antifungal, antiparasitic, or antiviral properties. These natural products were categorized according to their sources—sponges, mollusks, crustaceans, crabs, marine bacteria, and fungi—and chemical structure—cyclic peptides and depsipeptides. The antimicrobial activities, including against drug-resistant microorganisms, unusual structural characteristics, and hits more advanced in (pre)clinical studies, are highlighted. Nocathiacins I–III (91–93), unnarmicins A (114) and C (115), sclerotides A (160) and B (161), and plitidepsin (174) can be highlighted considering not only their high antimicrobial potency in vitro, but also for their promising in vivo results. Marine cyclic peptides are also interesting models for molecular modifications and/or total synthesis to obtain more potent compounds, with improved properties and in higher quantity. Solid-phase Fmoc- and Boc-protection chemistry is the major synthetic strategy to obtain marine cyclic peptides with antimicrobial properties, and key examples are presented guiding microbiologist and medicinal chemists to the discovery of new antimicrobial drug candidates from marine sources.
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Strieth D, Lenz S, Ulber R. In vivo and in silico screening for antimicrobial compounds from cyanobacteria. Microbiologyopen 2022; 11:e1268. [PMID: 35478288 PMCID: PMC8924698 DOI: 10.1002/mbo3.1268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 12/11/2022] Open
Abstract
Due to the emerging rise of multi‐drug resistant bacteria, the discovery of novel antibiotics is of high scientific interest. Through their high chemodiversity of bioactive secondary metabolites, cyanobacteria have proven to be promising microorganisms for the discovery of antibacterial compounds. These aspects make appropriate antibacterial screening approaches for cyanobacteria crucial. Up to date, screenings are mostly carried out using a phenotypic methodology, consisting of cyanobacterial cultivation, extraction, and inhibitory assays. However, the parameters of these methods highly vary within the literature. Therefore, the common choices of parameters and inhibitory assays are summarized in this review. Nevertheless, less frequently used method variants are highlighted, which lead to hits from antimicrobial compounds. In addition to the considerations of phenotypic methods, this study provides an overview of developments in the genome‐based screening area, be it in vivo using PCR technique or in silico using the recent genome‐mining method. Though, up to date, these techniques are not applied as much as phenotypic screening.
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Affiliation(s)
- Dorina Strieth
- Chair of Bioprocess Engineering University of Kaiserslautern Kaiserslautern Germany
| | - Selina Lenz
- Chair of Bioprocess Engineering University of Kaiserslautern Kaiserslautern Germany
| | - Roland Ulber
- Chair of Bioprocess Engineering University of Kaiserslautern Kaiserslautern Germany
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6
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Marinaccio L, Stefanucci A, Scioli G, Della Valle A, Zengin G, Cichelli A, Mollica A. Peptide Human Neutrophil Elastase Inhibitors from Natural Sources: An Overview. Int J Mol Sci 2022; 23:ijms23062924. [PMID: 35328340 PMCID: PMC8954713 DOI: 10.3390/ijms23062924] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/04/2022] [Accepted: 03/06/2022] [Indexed: 12/12/2022] Open
Abstract
Elastases are a broad group of enzymes involved in the lysis of elastin, the main component of elastic fibres. They are produced and released in the human body, mainly by neutrophils and the pancreas. The imbalance between elastase activity and its endogenous inhibitors can cause different illnesses due to their excessive activity. The main aim of this review is to provide an overview of the latest advancements on the identification, structures and mechanisms of action of peptide human neutrophil elastase inhibitors isolated from natural sources, such as plants, animals, fungi, bacteria and sponges. The discovery of new elastase inhibitors could have a great impact on the pharmaceutical development of novel drugs through the optimization of the natural lead compounds. Bacteria produce mainly cyclic peptides, while animals provide for long and linear amino acid sequences. Despite their diverse natural sources, these elastase inhibitors show remarkable IC50 values in a range from nM to μM values, thus representing an interesting starting point for the further development of potent bioactive compounds on human elastase enzymes.
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Affiliation(s)
- Lorenza Marinaccio
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (L.M.); (G.S.); (A.D.V.); (A.M.)
| | - Azzurra Stefanucci
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (L.M.); (G.S.); (A.D.V.); (A.M.)
- Correspondence: ; Tel.: +39-0871-3554906
| | - Giuseppe Scioli
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (L.M.); (G.S.); (A.D.V.); (A.M.)
| | - Alice Della Valle
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (L.M.); (G.S.); (A.D.V.); (A.M.)
| | - Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, Konya 42130, Turkey;
| | - Angelo Cichelli
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy;
| | - Adriano Mollica
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (L.M.); (G.S.); (A.D.V.); (A.M.)
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7
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Hassan S, Meenatchi R, Pachillu K, Bansal S, Brindangnanam P, Arockiaraj J, Kiran GS, Selvin J. Identification and characterization of the novel bioactive compounds from microalgae and cyanobacteria for pharmaceutical and nutraceutical applications. J Basic Microbiol 2022; 62:999-1029. [PMID: 35014044 DOI: 10.1002/jobm.202100477] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 12/08/2021] [Accepted: 12/23/2021] [Indexed: 12/21/2022]
Abstract
Microalgae and cyanobacteria (blue-green algae) are used as food by humans. They have gained a lot of attention in recent years because of their potential applications in biotechnology. Microalgae and cyanobacteria are good sources of many valuable compounds, including important biologically active compounds with antiviral, antibacterial, antifungal, and anticancer activities. Under optimal growth condition and stress factors, algal biomass produce varieties of potential bioactive compounds. In the current review, bioactive compounds production and their remarkable applications such as pharmaceutical and nutraceutical applications along with processes involved in identification and characterization of the novel bioactive compounds are discussed. Comprehensive knowledge about the exploration, extraction, screening, and trading of bioactive products from microalgae and cyanobacteria and their pharmaceutical and other applications will open up new avenues for drug discovery and bioprospecting.
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Affiliation(s)
- Saqib Hassan
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India.,Division of Non-Communicable Diseases, Indian Council of Medical Research (ICMR), New Delhi, India
| | - Ramu Meenatchi
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India.,Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India
| | - Kalpana Pachillu
- Center for Development Research (ZEF), University of Bonn, Bonn, Germany
| | - Sonia Bansal
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Pownraj Brindangnanam
- Department of Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Jesu Arockiaraj
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India.,Foundation for Aquaculture Innovation and Technology Transfer (FAITT), Thoraipakkam, Chennai, Tamil Nadu, India
| | - George Seghal Kiran
- Department of Food Science and Technology, Pondicherry University, Puducherry, India
| | - Joseph Selvin
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
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8
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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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Girija A, Vijayanathan M, Sreekumar S, Basheer J, Menon TG, Krishnankutty RE, Soniya EV. Harnessing the natural pool of polyketide and non-ribosomal peptide family: A route map towards novel drug development. Curr Mol Pharmacol 2021; 15:265-291. [PMID: 33745440 DOI: 10.2174/1874467214666210319145816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/10/2020] [Accepted: 12/31/2020] [Indexed: 11/22/2022]
Abstract
Emergence of communicable and non-communicable diseases possess health challenge to millions of people worldwide and is a major threat to the economic and social development in the coming century. The occurrence of recent pandemic, SARS-CoV-2 caused by lethal severe acute respiratory syndrome coronavirus 2 is one such example. Rapid research and development of drugs for the treatment and management of these diseases has been an incredibly challenging task for the pharmaceutical industry. Although, substantial focus has been made in the discovery of therapeutic compounds from natural sources having significant medicinal potential, their synthesis has shown a slow progress. Hence, the discovery of new targets by the application of the latest biotechnological and synthetic biology approaches is very much the need of the hour. Polyketides (PKs) and non-ribosomal peptides (NRPs) found in bacteria, fungi and plants are a large diverse family of natural products synthesized by two classes of enzymes: polyketide synthases (PKS) and non-ribosomal peptide synthetases (NRPS). These enzymes possess immense biomedical potential due to their simple architecture, catalytic capacity, as well as diversity. With the advent of latest in-silico and in-vitro strategies, these enzymes and their related metabolic pathways, if targeted, can contribute highly towards the biosynthesis of an array of potentially natural drug leads that have antagonist effects on biopolymers associated with various human diseases. In the face of the rising threat from the multidrug-resistant pathogens, this will further open new avenues for the discovery of novel and improved drugs by combining the natural and the synthetic approaches. This review discusses the relevance of polyketides and non-ribosomal peptides and the improvement strategies for the development of their derivatives and scaffolds, and how they will be beneficial to the future bioprospecting and drug discovery.
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Affiliation(s)
- Aiswarya Girija
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India.,Institute of Biological Environmental Rural Sciences (IBERS), Aberystwyth University, United Kingdom
| | - Mallika Vijayanathan
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India.,Biology Centre - Institute of Plant Molecular Biology, Czech Academy of Sciences, České Budějovice, 370 05, Czech Republic
| | - Sweda Sreekumar
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India.,Research Centre, University of Kerala, India
| | - Jasim Basheer
- School of Biosciences, Mahatma Gandhi University, PD Hills, Kottayam, Kerala, India.,Department of Cell Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacky University, Olomouc, Czech Republic
| | - Tara G Menon
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India
| | | | - Eppurathu Vasudevan Soniya
- Transdisciplinary Biology, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, Kerala, India
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11
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Chen D, Liu L, Lu Y, Chen S. Identification of fusarielin M as a novel inhibitor of Mycobacterium tuberculosis protein tyrosine phosphatase B (MptpB). Bioorg Chem 2020; 106:104495. [PMID: 33293055 DOI: 10.1016/j.bioorg.2020.104495] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/09/2020] [Accepted: 11/19/2020] [Indexed: 11/29/2022]
Abstract
The secreted Mycobacterium tuberculosis (Mtb) protein tyrosine phosphatase B (MptpB) is an essential virulence factor required for the intracellular survival of Mtb within host macrophages. MptpB has become a promising target for the development of novel anti-tuberculosis (TB) drugs. In this study, two new fusarielins, fusarielins M (1) and N (2), and a biogenetically related known compound, fusarielin G (3) were isolated from the marine-derived fungus Fusarium graminearum SYSU-MS5127. Their inhibitory effects on MptpB were evaluated. Among these compounds, fusarielin M substantially inhibited MptpB with a half-maximal inhibitory concentration (IC50) of 1.05 ± 0.08 μM, and an inhibition constant (Ki) of 1.03 ± 0.39 μM. Surface plasmon resonance analysis was used to characterize the interaction between fusarielin M and MptpB in vitro. Fusarielin M also exhibited cellular activity in blocking MptpB-mediated Erk1/2 and p38 inactivation in macrophages. Importantly, fusarielin M (20 μM) substantially reduced intracellular mycobacterial growth within macrophages, causing a 62% reduction in the bacterial burden. The binding mode of fusarielin M was further explored via molecular docking which suggested that fusarielin M binds to the active site of MptpB, forming a hydrogen bond with the side chain of Asp165; this is unique in the P-loop of MptpB compared to conventional human PTPs. The contact between fusarielin M and Asp165 in the catalytic loop provides a potential basis for inhibitor selectivity. Therefore, fusarielin M shows great potential as an anti-TB drug candidate.
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Affiliation(s)
- Dongni Chen
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China
| | - Yongjun Lu
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; Biomedical Center of Sun Yat-sen University, Guangzhou 510275, China
| | - Senhua Chen
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China.
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12
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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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13
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Docking- and pharmacophore-based virtual screening for the identification of novel Mycobacterium tuberculosis protein tyrosine phosphatase B (MptpB) inhibitor with a thiobarbiturate scaffold. Bioorg Chem 2019; 85:229-239. [DOI: 10.1016/j.bioorg.2018.12.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/23/2018] [Accepted: 12/29/2018] [Indexed: 01/15/2023]
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14
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Janssen EML. Cyanobacterial peptides beyond microcystins - A review on co-occurrence, toxicity, and challenges for risk assessment. WATER RESEARCH 2019; 151:488-499. [PMID: 30641464 DOI: 10.1016/j.watres.2018.12.048] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 09/18/2018] [Accepted: 12/31/2018] [Indexed: 05/28/2023]
Abstract
Cyanobacterial bloom events that produce natural toxins occur in freshwaters across the globe, yet the potential risk of many cyanobacterial metabolites remains mostly unknown. Only microcystins, one class of cyanopeptides, have been studied intensively and the wealth of evidence regarding exposure concentrations and toxicity led to their inclusion in risk management frameworks for water quality. However, cyanobacteria produce an incredible diversity of hundreds of cyanopeptides beyond the class of microcystins. The question arises, whether the other cyanopeptides are in fact of no human and ecological concern or whether these compounds merely received (too) little attention thus far. Current observations suggest that an assessment of their (eco)toxicological risk is indeed relevant: First, other cyanopeptides, including cyanopeptolins and anabaenopeptins, can occur just as frequently and at similar nanomolar concentrations as microcystins in surface waters. Second, cyanopeptolins, anabaenopeptins, aeruginosins and microginins inhibit proteases in the nanomolar range, in contrast to protein phosphatase inhibition by microcystins. Cyanopeptolins, aeruginosins, and aerucyclamide also show toxicity against grazers in the micromolar range comparable to microcystins. The key challenge for a comprehensive risk assessment of cyanopeptides remains their large structural diversity, lack of reference standards, and high analytical requirements for identification and quantification. One way forward would be a prevalence study to identify the priority candidates of tentatively abundant, persistent, and toxic cyanopeptides to make comprehensive risk assessments more manageable.
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Affiliation(s)
- Elisabeth M-L Janssen
- Swiss Federal Institute of Aquatic Science and Technology, Eawag, Dübendorf, 8600, Switzerland.
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15
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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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16
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Junk L, Kazmaier U. Total Synthesis and Configurational Revision of Mozamide A, a Hydroxy-Brunsvicamide. J Org Chem 2019; 84:2489-2500. [DOI: 10.1021/acs.joc.8b02836] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lukas Junk
- Organic Chemistry I, Saarland University, Campus Building C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Organic Chemistry I, Saarland University, Campus Building C4.2, D-66123 Saarbrücken, Germany
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17
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Xue Y, Zhao P, Quan C, Zhao Z, Gao W, Li J, Zu X, Fu D, Feng S, Bai X, Zuo Y, Li P. Cyanobacteria-derived peptide antibiotics discovered since 2000. Peptides 2018; 107:17-24. [PMID: 30077717 DOI: 10.1016/j.peptides.2018.08.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/22/2018] [Accepted: 08/01/2018] [Indexed: 12/27/2022]
Abstract
Members of cyanobacteria, including Moorea spp., Okeania spp., Lyngbya spp., Schizothrix spp., Leptolyngbya spp., Microcystis spp., Symploca spp., Hassallia sp., Anabaena spp., Planktothrix sp., Tychonema spp., Oscillatoria spp., Tolypothrix sp., Nostoc sp., and Hapalosiphon sp. produce an enormously diverse range of peptide antibiotics with huge potential as pharmaceutical drugs and biocontrol agents following screening of structural analogues and analysis of structure-activity relationships (SAR). The need for novel antibiotic lead compounds is urgent, and this review summarizes 78 cyanobacteria-derived compounds reported since 2000, including 32 depsipeptides, 18 cyclic lipopeptides, 13 linear lipopeptides, 14 cyclamides, and one typical cyclic peptide. The current and potential therapeutic applications of these peptides are discussed, including for SAR, antituberculotic, antifungal, antibacterial, antiviral, and antiparasitic (anti-plasmodial, antitrypanosomal and antileishmanial) activities.
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Affiliation(s)
- Yun Xue
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Pengchao Zhao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Chunshan Quan
- Department of Life Science, Dalian Nationalities University, Dalian, 116600, China
| | - Zhanqin Zhao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, China
| | - Weina Gao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Jinghua Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xiangyang Zu
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Dongliao Fu
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Shuxiao Feng
- College of Chemical Engineering and Pharmacy, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xuefei Bai
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Yanjun Zuo
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Ping Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
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18
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Junk L, Kazmaier U. Total Synthesis of Keramamides A and L from a Common Precursor by Late-Stage Indole Synthesis and Configurational Revision. Angew Chem Int Ed Engl 2018; 57:11432-11435. [PMID: 30019808 DOI: 10.1002/anie.201806657] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Indexed: 01/27/2023]
Abstract
The marine natural products keramamide A and L, members of the class of anabaenopeptin-type peptides, were synthesized for the first time by a convergent and flexible route. The installation of the substituted tryptophan moieties was accomplished at the very end of the synthesis on the cyclic peptides, and thus enabled the synthesis of both natural products from one common precursor. The preparation of several epimers clearly indicates that the originally proposed relative configurations of both Keramamides A and L were not correct.
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Affiliation(s)
- Lukas Junk
- Institut für Organische Chemie, Universität des Saarlandes, Campus C4.2, 66123, Saarbrücken, Germany
| | - Uli Kazmaier
- Institut für Organische Chemie, Universität des Saarlandes, Campus C4.2, 66123, Saarbrücken, Germany
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19
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Junk L, Kazmaier U. Totalsynthese der Keramamide A und L aus einer gemeinsamen Vorstufe durch späte Indolsynthese und Revision ihrer Konfiguration. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806657] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Lukas Junk
- Institut für Organische Chemie; Universität des Saarlandes; Campus C4.2 66123 Saarbrücken Deutschland
| | - Uli Kazmaier
- Institut für Organische Chemie; Universität des Saarlandes; Campus C4.2 66123 Saarbrücken Deutschland
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20
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Target discovery focused approaches to overcome bottlenecks in the exploitation of antimycobacterial natural products. Future Med Chem 2018; 10:811-822. [PMID: 29569936 DOI: 10.4155/fmc-2017-0273] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Tuberculosis is a major global health hazard. The search for new antimycobacterials has focused on such as screening combinational chemistry libraries or designing chemicals to target predefined pockets of essential bacterial proteins. The relative ineffectiveness of these has led to a reappraisal of natural products for new antimycobacterial drug leads. However, progress has been limited, we suggest through a failure in many cases to define the drug target and optimize the hits using this information. We highlight methods of target discovery needed to develop a drug into a candidate for clinical trials. We incorporate these into suggested analysis pipelines which could inform the research strategies to accelerate the development of new drug leads from natural products.
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21
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Gogineni V, Hamann MT. Marine natural product peptides with therapeutic potential: Chemistry, biosynthesis, and pharmacology. Biochim Biophys Acta Gen Subj 2018; 1862:81-196. [PMID: 28844981 PMCID: PMC5918664 DOI: 10.1016/j.bbagen.2017.08.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 08/07/2017] [Accepted: 08/09/2017] [Indexed: 12/21/2022]
Abstract
The oceans are a uniquely rich source of bioactive metabolites, of which sponges have been shown to be among the most prolific producers of diverse bioactive secondary metabolites with valuable therapeutic potential. Much attention has been focused on marine bioactive peptides due to their novel chemistry and diverse biological properties. As summarized in this review, marine peptides are known to exhibit various biological activities such as antiviral, anti-proliferative, antioxidant, anti-coagulant, anti-hypertensive, anti-cancer, antidiabetic, antiobesity, and calcium-binding activities. This review focuses on the chemistry and biology of peptides isolated from sponges, bacteria, cyanobacteria, fungi, ascidians, and other marine sources. The role of marine invertebrate microbiomes in natural products biosynthesis is discussed in this review along with the biosynthesis of modified peptides from different marine sources. The status of peptides in various phases of clinical trials is presented, as well as the development of modified peptides including optimization of PK and bioavailability.
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Affiliation(s)
- Vedanjali Gogineni
- Department of BioMolecular Sciences, Division of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, University, MS, United States.
| | - Mark T Hamann
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy and Public Health Sciences, Medical University of South Carolina, Charleston, SC, United States.
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22
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Bérubé C, Borgia A, Voyer N. A novel route towards cycle-tail peptides using oxime resin: teaching an old dog a new trick. Org Biomol Chem 2018; 16:9117-9123. [DOI: 10.1039/c8ob01868e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, two anabaenopeptins cycle-tail peptides were synthesized via a novel acid-catalyzed head-to-side-chain concomitant cyclization/cleavage reaction on oxime resin.
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Affiliation(s)
- Christopher Bérubé
- Département de Chimie and PROTEO
- Université Laval
- Pavillon Alexandre-Vachon
- Faculté des sciences et de génie
- Québec
| | - Alexandre Borgia
- Département de Chimie and PROTEO
- Université Laval
- Pavillon Alexandre-Vachon
- Faculté des sciences et de génie
- Québec
| | - Normand Voyer
- Département de Chimie and PROTEO
- Université Laval
- Pavillon Alexandre-Vachon
- Faculté des sciences et de génie
- Québec
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23
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Agrawal S, Acharya D, Adholeya A, Barrow CJ, Deshmukh SK. Nonribosomal Peptides from Marine Microbes and Their Antimicrobial and Anticancer Potential. Front Pharmacol 2017; 8:828. [PMID: 29209209 PMCID: PMC5702503 DOI: 10.3389/fphar.2017.00828] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/31/2017] [Indexed: 11/13/2022] Open
Abstract
Marine environments are largely unexplored and can be a source of new molecules for the treatment of many diseases such as malaria, cancer, tuberculosis, HIV etc. The Marine environment is one of the untapped bioresource of getting pharmacologically active nonribosomal peptides (NRPs). Bioprospecting of marine microbes have achieved many remarkable milestones in pharmaceutics. Till date, more than 50% of drugs which are in clinical use belong to the nonribosomal peptide or mixed polyketide-nonribosomal peptide families of natural products isolated from marine bacteria, cyanobacteria and fungi. In recent years large numbers of nonribosomal have been discovered from marine microbes using multi-disciplinary approaches. The present review covers the NRPs discovered from marine microbes and their pharmacological potential along with role of genomics, proteomics and bioinformatics in discovery and development of nonribosomal peptides drugs.
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Affiliation(s)
- Shivankar Agrawal
- Biotechnology and Management of Bioresources Division, TERI-Deakin Nano Biotechnology Centre, Energy and Resources Institute, New Delhi, India.,Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Debabrata Acharya
- Biotechnology and Management of Bioresources Division, TERI-Deakin Nano Biotechnology Centre, Energy and Resources Institute, New Delhi, India
| | - Alok Adholeya
- Biotechnology and Management of Bioresources Division, TERI-Deakin Nano Biotechnology Centre, Energy and Resources Institute, New Delhi, India
| | - Colin J Barrow
- Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Sunil K Deshmukh
- Biotechnology and Management of Bioresources Division, TERI-Deakin Nano Biotechnology Centre, Energy and Resources Institute, New Delhi, India
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24
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Asfaw H, Laqua K, Walkowska AM, Cunningham F, Martinez-Martinez MS, Cuevas-Zurita JC, Ballell-Pages L, Imming P. Design, synthesis and structure-activity relationship study of wollamide B; a new potential anti TB agent. PLoS One 2017; 12:e0176088. [PMID: 28423019 PMCID: PMC5397059 DOI: 10.1371/journal.pone.0176088] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/05/2017] [Indexed: 11/26/2022] Open
Abstract
Wollamide B is a cationic antimycobacterial cyclohexapeptide that exhibits activity against Mycobacterium bovis (M. bovis) (IC50 of 3.1 μM). Aiming to define its structural activity relationship (SAR), optimizing potency and pharmacokinetic properties, libraries of analogues were synthesized following a standard Fmoc-based solid phase peptide synthesis approach. The antimycobacterial activities of wollamide B and all the synthesized analogues were tested against Mycobacterium tuberculosis (Mtb) H37Rv. Parallely, in vitro drug metabolism and pharmacokinetic (ADME) profiling was done for the synthesized compounds to evaluate their drug likeness. Among the 25 synthesized wollamides five of them showed potent activities with MICs ≤ 3.1 μM and found to be nontoxic against human HepG2 cells up to 100 μM. The results of the in vitro ADME profiling revealed the remarkable plasma stability and very good aqueous solubility of the class in general while the metabolic stability was found to be moderate to low. Of particular note, compounds 7c (MIC = 1.1 μM) and 13c (0.6 μM) that exhibited good balance of antimycobacterial activity vs. optimal pharmacokinetic properties could be used as a new lead for further development.
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Affiliation(s)
- Henok Asfaw
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Katja Laqua
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Anna Maria Walkowska
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Fraser Cunningham
- Diseases of the Developing World, Medicines Development Campus, GlaxoSmithKline, Tres Cantos, Madrid, Spain
| | | | - Juan Carlos Cuevas-Zurita
- Diseases of the Developing World, Medicines Development Campus, GlaxoSmithKline, Tres Cantos, Madrid, Spain
| | - Lluís Ballell-Pages
- Diseases of the Developing World, Medicines Development Campus, GlaxoSmithKline, Tres Cantos, Madrid, Spain
| | - Peter Imming
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
- * E-mail:
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25
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Swain SS, Paidesetty SK, Padhy RN. Antibacterial, antifungal and antimycobacterial compounds from cyanobacteria. Biomed Pharmacother 2017; 90:760-776. [PMID: 28419973 DOI: 10.1016/j.biopha.2017.04.030] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 04/02/2017] [Accepted: 04/10/2017] [Indexed: 11/18/2022] Open
Abstract
Infections from multidrug resistant (MDR) pathogenic bacteria, fungi and Mycobacterium tuberculosis remain progressively intractable. The search of effective antimicrobials from other possible non-conventional sources against MDR pathogenic bacteria, fungi and mycobacteria is call of the day. This review considers 121 cyanobacterial compounds or cyano-compounds with antimicrobial activities. Chemical structures of cyano-compounds were retrieved from ChemSpider and PubChem databases and were visualized by the software ChemDraw Ultra. Chemical information on cyano-compounds pertaining to Lipinski rules of five was assessed. The reviewed cyano-compounds belong to the following chemical classes (with examples): alkaloids (ambiguine isonitriles and 12-epi-hapalindole E isonitrile), aromatic compounds (benzoic acid and cyanobacterin), cyclic depsipeptides (cryptophycin 52 and lyngbyabellin A), cyclic peptides (calophycin and tenuecyclamides), cyclic undecapeptides (kawaguchipeptins and lyngbyazothrin A), cyclophane (carbamidocyclophane), extracellular pigment (nostocine A), fatty acids (alpha-dimorphecolic acid and majusculonic acid), linear peptides (muscoride A), lipopeptides (fischerellins and scytonemin A), nucleosides (tolytoxin and tubercidin), phenols (ambigols and 4-4'-hydroxybiphenyl), macrolides (scytophycin A and tolytoxin), polyketides (malyngolide and nostocyclyne), polyphenyl ethers (crossbyanol A), porphinoids (tolyporphin J) and terpenoids (noscomin and scytoscalarol). Cyanobacteria appear to be a diverse source of compounds with antimicrobial activity. Further attention is required to elucidate whether those could be applied as pharmaceuticals.
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Affiliation(s)
- Shasank S Swain
- Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha 'O' Anusandhan University, Kalinga Nagar, Bhubaneswar 751003, Odisha, India
| | - Sudhir K Paidesetty
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan University, Kalinga Nagar, Bhubaneswar 751003, Odisha, India
| | - Rabindra N Padhy
- Central Research Laboratory, Institute of Medical Sciences and Sum Hospital, Siksha 'O' Anusandhan University, Kalinga Nagar, Bhubaneswar 751003, Odisha, India.
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Moosmann P, Ueoka R, Grauso L, Mangoni A, Morinaka BI, Gugger M, Piel J. Cyanobacterial ent
-Sterol-Like Natural Products from a Deviated Ubiquinone Pathway. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Philipp Moosmann
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Reiko Ueoka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Laura Grauso
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
- Current address: Stazione Zoologica Anton Dohrn; Villa Comunale 80121 Napoli Italy
| | - Alfonso Mangoni
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
| | - Brandon I. Morinaka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Muriel Gugger
- Institut Pasteur; Collection des Cyanobactéries; Département de Microbiologie; 75015 Paris France
| | - Jörn Piel
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
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27
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Moosmann P, Ueoka R, Grauso L, Mangoni A, Morinaka BI, Gugger M, Piel J. Cyanobacterial ent
-Sterol-Like Natural Products from a Deviated Ubiquinone Pathway. Angew Chem Int Ed Engl 2017; 56:4987-4990. [DOI: 10.1002/anie.201611617] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/19/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Philipp Moosmann
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Reiko Ueoka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Laura Grauso
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
- Current address: Stazione Zoologica Anton Dohrn; Villa Comunale 80121 Napoli Italy
| | - Alfonso Mangoni
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
| | - Brandon I. Morinaka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Muriel Gugger
- Institut Pasteur; Collection des Cyanobactéries; Département de Microbiologie; 75015 Paris France
| | - Jörn Piel
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
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28
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Spoof L, Błaszczyk A, Meriluoto J, Cegłowska M, Mazur-Marzec H. Structures and Activity of New Anabaenopeptins Produced by Baltic Sea Cyanobacteria. Mar Drugs 2015; 14:8. [PMID: 26729139 PMCID: PMC4728505 DOI: 10.3390/md14010008] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 01/15/2023] Open
Abstract
Anabaenopeptins, bioactive cyclic hexapeptides, were isolated by preparative reversed-phase high performance liquid chromatography from an extract of Baltic Sea cyanobacterial bloom material composed of Nodularia spumigena (50%), Aphanizomenon flos-aquae (40%) and Dolichospermum spp. (10%). Five new anabaenopeptins and nine previously known anabaenopeptins were isolated, and their putative structures were determined by tandem mass spectrometry. The activity of the peptides against carboxypeptidase A and protein phosphatase 1 as well as chymotrypsin, trypsin and thrombin was tested. All anabaenopeptins inhibited carboxypeptidase A (apart from one anabaenopeptin variant) and protein phosphatase 1 with varying potency, but no inhibition against chymotrypsin, trypsin and thrombin was observed.
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Affiliation(s)
- Lisa Spoof
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, 20520 Turku, Finland.
| | - Agata Błaszczyk
- Department of Marine Biotechnology, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland.
| | - Jussi Meriluoto
- Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6 A, 20520 Turku, Finland.
| | - Marta Cegłowska
- Department of Marine Biotechnology, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland.
| | - Hanna Mazur-Marzec
- Department of Marine Biotechnology, University of Gdańsk, Al. Marszałka Piłsudskiego 46, 81-378 Gdynia, Poland.
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29
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Sanz M, Andreote APD, Fiore MF, Dörr FA, Pinto E. Structural Characterization of New Peptide Variants Produced by Cyanobacteria from the Brazilian Atlantic Coastal Forest Using Liquid Chromatography Coupled to Quadrupole Time-of-Flight Tandem Mass Spectrometry. Mar Drugs 2015; 13:3892-919. [PMID: 26096276 PMCID: PMC4483662 DOI: 10.3390/md13063892] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 05/14/2015] [Accepted: 05/21/2015] [Indexed: 12/25/2022] Open
Abstract
Cyanobacteria from underexplored and extreme habitats are attracting increasing attention in the search for new bioactive substances. However, cyanobacterial communities from tropical and subtropical regions are still largely unknown, especially with respect to metabolite production. Among the structurally diverse secondary metabolites produced by these organisms, peptides are by far the most frequently described structures. In this work, liquid chromatography/electrospray ionization coupled to high resolution quadrupole time-of-flight tandem mass spectrometry with positive ion detection was applied to study the peptide profile of a group of cyanobacteria isolated from the Southeastern Brazilian coastal forest. A total of 38 peptides belonging to three different families (anabaenopeptins, aeruginosins, and cyanopeptolins) were detected in the extracts. Of the 38 peptides, 37 were detected here for the first time. New structural features were proposed based on mass accuracy data and isotopic patterns derived from full scan and MS/MS spectra. Interestingly, of the 40 surveyed strains only nine were confirmed to be peptide producers; all of these strains belonged to the order Nostocales (three Nostoc sp., two Desmonostoc sp. and four Brasilonema sp.).
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Affiliation(s)
- Miriam Sanz
- Faculty of Pharmaceutical Science, University of São Paulo, Avenida Lineu Prestes 580, Bl-17-05508-900 São Paulo, SP, Brazil.
| | - Ana Paula Dini Andreote
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil.
| | - Marli Fatima Fiore
- Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenário 303, 13400-970 Piracicaba, SP, Brazil.
| | - Felipe Augusto Dörr
- Faculty of Pharmaceutical Science, University of São Paulo, Avenida Lineu Prestes 580, Bl-17-05508-900 São Paulo, SP, Brazil.
| | - Ernani Pinto
- Faculty of Pharmaceutical Science, University of São Paulo, Avenida Lineu Prestes 580, Bl-17-05508-900 São Paulo, SP, Brazil.
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30
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From Bench to Bedside: Natural Products and Analogs for the Treatment of Neglected Tropical Diseases (NTDs). STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63460-3.00002-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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31
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Natural products with protein tyrosine phosphatase inhibitory activity. Methods 2014; 65:229-38. [DOI: 10.1016/j.ymeth.2013.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 09/04/2013] [Accepted: 09/07/2013] [Indexed: 01/05/2023] Open
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32
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Mascarello A, Mori M, Chiaradia-Delatorre LD, Menegatti ACO, Monache FD, Ferrari F, Yunes RA, Nunes RJ, Terenzi H, Botta B, Botta M. Discovery of Mycobacterium tuberculosis protein tyrosine phosphatase B (PtpB) inhibitors from natural products. PLoS One 2013; 8:e77081. [PMID: 24155919 PMCID: PMC3796549 DOI: 10.1371/journal.pone.0077081] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/05/2013] [Indexed: 11/18/2022] Open
Abstract
Protein tyrosine phosphatase B (PtpB) is one of the virulence factors secreted into the host cell by Mycobacterium tuberculosis. PtpB attenuates host immune defenses by interfering with signal transduction pathways in macrophages and, therefore, it is considered a promising target for the development of novel anti-tuberculosis drugs. Here we report the discovery of natural compound inhibitors of PtpB among an in house library of more than 800 natural substances by means of a multidisciplinary approach, mixing in silico screening with enzymatic and kinetics studies and MS assays. Six natural compounds proved to inhibit PtpB at low micromolar concentrations (< 30 µM) with Kuwanol E being the most potent with Ki = 1.6 ± 0.1 µM. To the best of our knowledge, Kuwanol E is the most potent natural compound PtpB inhibitor reported so far, as well as it is the first non-peptidic PtpB inhibitor discovered from natural sources. Compounds herein identified may inspire the design of novel specific PtpB inhibitors.
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Affiliation(s)
- Alessandra Mascarello
- Laboratório Estrutura e Atividade, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Mattia Mori
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma La Sapienza, Roma, Italy
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Siena, Italy
| | - Louise Domeneghini Chiaradia-Delatorre
- Laboratório Estrutura e Atividade, Universidade Federal de Santa Catarina, Florianópolis, Brazil
- Centro de Biologia Molecular Estrutural, Universidade Federal de Santa Catarina, Florianopolis, Brazil
| | | | - Franco Delle Monache
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma La Sapienza, Roma, Italy
| | - Franco Ferrari
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma La Sapienza, Roma, Italy
| | - Rosendo Augusto Yunes
- Laboratório Estrutura e Atividade, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Ricardo José Nunes
- Laboratório Estrutura e Atividade, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Hernán Terenzi
- Centro de Biologia Molecular Estrutural, Universidade Federal de Santa Catarina, Florianopolis, Brazil
- * E-mail: (BB); (HT); (MB)
| | - Bruno Botta
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma La Sapienza, Roma, Italy
- * E-mail: (BB); (HT); (MB)
| | - Maurizio Botta
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Siena, Italy
- Center for Biotechnology, Sbarro Institute for Cancer Research and Molecular Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
- * E-mail: (BB); (HT); (MB)
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Antimycobacterial and photosynthetic electron transport inhibiting activity of ring-substituted 4-arylamino-7-chloroquinolinium chlorides. Molecules 2013; 18:10648-70. [PMID: 24002140 PMCID: PMC6270397 DOI: 10.3390/molecules180910648] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 08/19/2013] [Accepted: 08/26/2013] [Indexed: 11/17/2022] Open
Abstract
In this study, a series of twenty-five ring-substituted 4-arylamino-7-chloroquinolinium chlorides were prepared and characterized. The compounds were tested for their activity related to inhibition of photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts and also primary in vitro screening of the synthesized compounds was performed against mycobacterial species. 4-[(2-Bromophenyl)amino]-7-chloroquinolinium chloride showed high biological activity against M. marinum, M. kansasii, M. smegmatis and 7-chloro-4-[(2-methylphenyl)amino]quinolinium chloride demonstrated noteworthy biological activity against M. smegmatis and M. avium subsp. paratuberculosis. The most effective compounds demonstrated quite low toxicity (LD₅₀ > 20 μmol/L) against the human monocytic leukemia THP-1 cell line within preliminary in vitro cytotoxicity screening. The tested compounds were found to inhibit PET in photosystem II. The PET-inhibiting activity expressed by IC₅₀ value of the most active compound 7-chloro-4-[(3-trifluoromethylphenyl)amino]quinolinium chloride was 27 μmol/L and PET-inhibiting activity of ortho-substituted compounds was significantly lower than this of meta- and para-substituted ones. The structure-activity relationships are discussed for all compounds.
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34
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Wong D, Chao JD, Av-Gay Y. Mycobacterium tuberculosis-secreted phosphatases: from pathogenesis to targets for TB drug development. Trends Microbiol 2013; 21:100-9. [DOI: 10.1016/j.tim.2012.09.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 09/10/2012] [Accepted: 09/14/2012] [Indexed: 01/02/2023]
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35
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Bhatnagar I, Kim SK. Pharmacologically prospective antibiotic agents and their sources: a marine microbial perspective. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 34:631-643. [PMID: 23121870 DOI: 10.1016/j.etap.2012.08.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 08/30/2012] [Accepted: 08/31/2012] [Indexed: 06/01/2023]
Abstract
Marine microbes have been a storehouse of bioactive metabolites with tremendous potential as drug candidates. Marine microorganism derived secondary metabolites (chemical compounds/peptides) are considered to be a burning area of research since recent past. Many of such compounds have been proven to be anti-bacterial, anti-fungal, anti-algal, anti-HIV, anti-helminthic, anti-protozoan, anti-tumor and anti-allergic agents. Marine bacteria and fungi have been reported to be the producers of such compounds owing to their defense mechanisms and metabolic by products. Although the number of natural products isolated from these classes of marine microbial flora is large, a limited number of such compounds reach the clinical trial and even less number of them get approved as a drug. Here we discuss the recent studies on the isolation, characterization and the pharmacological significances of anti-bacterial, anti-fungal and anti-infective agents of marine microbial origin. Further, the clinical status of such compounds has also been discussed in comparison with those derived from their terrestrial counterparts.
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Affiliation(s)
- Ira Bhatnagar
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea.
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36
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Exploring anti-TB leads from natural products library originated from marine microbes and medicinal plants. Antonie van Leeuwenhoek 2012; 102:447-61. [DOI: 10.1007/s10482-012-9777-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 07/12/2012] [Indexed: 10/28/2022]
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37
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Recent advances in antitubercular natural products. Eur J Med Chem 2012; 49:1-23. [DOI: 10.1016/j.ejmech.2011.12.029] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 12/09/2011] [Accepted: 12/20/2011] [Indexed: 11/18/2022]
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38
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Zi J, Lantvit DD, Swanson SM, Orjala J. Lyngbyaureidamides A and B, two anabaenopeptins from the cultured freshwater cyanobacterium Lyngbya sp. (SAG 36.91). PHYTOCHEMISTRY 2012; 74:173-7. [PMID: 22152977 PMCID: PMC3262893 DOI: 10.1016/j.phytochem.2011.09.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 07/28/2011] [Accepted: 09/05/2011] [Indexed: 05/13/2023]
Abstract
Two anabaenopeptin-type peptides, lyngbyaureidamides A and B, together with two previously reported peptides lyngbyazothrins C and D, were isolated from the cultured freshwater cyanobacterium Lyngbya sp. (SAG 36.91). Their structures were determined by spectroscopic and chemical methods. Lyngbyazothrins C and D were also able to inhibit the 20S proteasome with IC(50) values of 7.1 μM and 19.2 μM, respectively, while lyngbyaureidamides A and B were not active at 50 μM.
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Affiliation(s)
- Jiachen Zi
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois 60612
| | - Daniel D. Lantvit
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois 60612
| | - Steven M. Swanson
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois 60612
| | - Jimmy Orjala
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois 60612
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39
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Chlipala GE, Mo S, Orjala J. Chemodiversity in freshwater and terrestrial cyanobacteria - a source for drug discovery. Curr Drug Targets 2011; 12:1654-73. [PMID: 21561419 PMCID: PMC3244969 DOI: 10.2174/138945011798109455] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 03/02/2011] [Indexed: 12/16/2022]
Abstract
Cyanobacteria are considered a promising source for new pharmaceutical lead compounds and a large number of chemically diverse and bioactive metabolites have been obtained from cyanobacteria over the last few decades. This review highlights the structural diversity of natural products from freshwater and terrestrial cyanobacteria. The review is divided into three areas: cytotoxic metabolites, protease inhibitors, and antimicrobial metabolites. The first section discusses the potent cytotoxins cryptophycin and tolytoxin. The second section covers protease inhibitors from freshwater and terrestrial cyanobacteria and is divided in five subsections according to structural class: aeruginosins, cyanopeptolins, microviridins, anabaenopeptins, and microginins. Structure activity relationships are discussed within each protease inhibitor class. The third section, antimicrobial metabolites from freshwater and terrestrial cyanobacteria, is divided by chemical class in three subsections: alkaloids, peptides and terpenoids. These examples emphasize the structural diversity and drug development potential of natural products from freshwater and terrestrial cyanobacteria.
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Affiliation(s)
- George E. Chlipala
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
| | - Shunyan Mo
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
| | - Jimmy Orjala
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
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40
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Nagarajan M, Maruthanayagam V, Sundararaman M. A review of pharmacological and toxicological potentials of marine cyanobacterial metabolites. J Appl Toxicol 2011; 32:153-85. [PMID: 21910132 DOI: 10.1002/jat.1717] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/22/2011] [Accepted: 06/22/2011] [Indexed: 11/07/2022]
Abstract
Novel toxic metabolites from marine cyanobacteria have been thoroughly explored. Biologically active and chemically diverse compounds that could be hepatotoxic, neurotoxic or cytotoxic, such as cyclic peptides, lipopeptides, fatty acid amides, alkaloids and saccharides, have been produced from marine cyanobacteria. Many reports have revealed that biosynthesis of active metabolites is predominant during cyanobacterial bloom formation. Marine cyanobacterial toxic metabolites exhibit important biological properties, such as interfering in signal transduction either by activation or blockage of sodium channels or by targeting signaling proteins; inducing apoptosis by disrupting cytoskeletal proteins; and inhibiting membrane transporters, receptors, serine proteases and topoisomerases. The pharmacological importance of these metabolites resides in their proliferation and growth-controlling abilities towards cancer cell lines and disease-causing potent microbial agents (bacteria, virus, fungi and protozoa). Besides their toxic and pharmacological potentials, the present review discusses structural and functional resemblance of marine cyanobacterial metabolites to marine algae, sponges and mollusks.
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Affiliation(s)
- M Nagarajan
- Department of Marine Biotechnology, School of Marine Sciences, Bharathidasan University, Tiruchirappalli-620 024, Tamil Nadu, India
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41
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Chen L, Zhou B, Zhang S, Wu L, Wang Y, Franzblau SG, Zhang ZY. Identification and characterization of novel inhibitors of mPTPB, an essential virulent phosphatase from Mycobacterium tuberculosis. ACS Med Chem Lett 2010; 1:355-359. [PMID: 21116447 DOI: 10.1021/ml1001135] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Mycobacterium protein tyrosine phosphatase B (mPTPB) is an essential virulence factor required for Mycobacterium tuberculosis (Mtb) survival in host macrophages. Consequently, mPTPB represents an exciting new target with a completely novel mechanism of action. We screened a library of 7,500 compounds against mPTPB and identified several 2-oxo-1,2-dihydrobenzo[cd]indole-6-sulfonamide and piperazinyl-thiophenyl-ethyl-oxalamide derivatives as two distinct classes of mPTPB inhibitors. We showed that both classes of inhibitors are capable of blocking the mPTPB-mediated ERK1/2 inactivation. We further demonstrated that both classes of mPTPB inhibitors are effective in inhibiting the growth of Mtb in macrophages. Thus, improvement of the lead compounds may produce a novel class of anti-TB agents.
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Affiliation(s)
- Lan Chen
- Department of Biochemistry and Molecular Biology
- Chemical Genomics Core Facility
| | - Bo Zhou
- Department of Biochemistry and Molecular Biology
| | - Sheng Zhang
- Department of Biochemistry and Molecular Biology
| | - Li Wu
- Department of Biochemistry and Molecular Biology
- Chemical Genomics Core Facility
| | - Yuehong Wang
- Institute of Tuberculosis Research, University of Illinois at Chicago, Illinois 60612
| | - Scott G. Franzblau
- Institute of Tuberculosis Research, University of Illinois at Chicago, Illinois 60612
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42
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Total synthesis and antimicrobial activity of a natural cycloheptapeptide of marine origin. Mar Drugs 2010; 8:2384-94. [PMID: 20948913 PMCID: PMC2953409 DOI: 10.3390/md8082384] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 07/26/2010] [Accepted: 07/30/2010] [Indexed: 11/16/2022] Open
Abstract
The present study deals with the first total synthesis of the proline-rich cyclopolypeptide stylisin 2 via a solution phase technique by coupling of the Boc-L-Pro-L-Ile-L-Pro-OH tripeptide unit with the L-Phe-L-Pro-L-Pro-L-Tyr-OMe tetrapeptide unit, followed by cyclization of the resulting linear heptapeptide fragment. The chemical structure of the finally synthesized peptide was elucidated by FTIR, ¹H/¹³C-NMR and FAB MS spectral data, as well as elemental analyses. The newly synthesized peptide was subjected to antimicrobial screening against eight pathogenic microbes and found to exhibit potent antimicrobial activity against Pseudomonas aeruginosa, Klebsiella pneumoniae and Candida albicans, in addition to moderate antidermatophyte activity against pathogenic Trichophyton mentagrophytes and Microsporum audouinii when compared to standard drugs--gatifloxacin and griseofulvin.
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43
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New strategies in fighting TB: targeting Mycobacterium tuberculosis-secreted phosphatases MptpA & MptpB. Future Med Chem 2010; 2:1325-37. [DOI: 10.4155/fmc.10.214] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Mycobacterium tuberculosis is the most successful human pathogen due to its ability to challenge the innate immune system and survive in the infected host for a lifetime. Although tuberculosis (TB) is a curable disease, severe multidrug resistance to traditional antibiotics has caused a resurgence of the infection worldwide. The secreted phosphatases MptpA and MptpB are key virulence factors that play important roles in survival of M. tuberculosis during macrophage infection. These enzymes are therefore attractive alternative targets for chemotherapy. In this review we analyze the structural features that characterize these two phosphatases and differentiate them from human homologs. Their structural peculiarities are important for drug-design considerations and the future development of selective inhibitors. We describe the recent efforts in developing specific, selective and cell-active inhibitors of MptpA and MptpB, and discuss their potential applications as alternative treatments of TB.
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44
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Targeting mycobacterium protein tyrosine phosphatase B for antituberculosis agents. Proc Natl Acad Sci U S A 2010. [PMID: 20167798 DOI: 10.1073/pnas.0909133107.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Protein tyrosine phosphatases are often exploited and subverted by pathogenic bacteria to cause human diseases. The tyrosine phosphatase mPTPB from Mycobacterium tuberculosis is an essential virulence factor that is secreted by the bacterium into the cytoplasm of macrophages, where it mediates mycobacterial survival in the host. Consequently, there is considerable interest in understanding the mechanism by which mPTPB evades the host immune responses, and in developing potent and selective mPTPB inhibitors as unique antituberculosis (antiTB) agents. We uncovered that mPTPB subverts the innate immune responses by blocking the ERK1/2 and p38 mediated IL-6 production and promoting host cell survival by activating the Akt pathway. We identified a potent and selective mPTPB inhibitor I-A09 with highly efficacious cellular activity, from a combinatorial library of bidentate benzofuran salicylic acid derivatives assembled by click chemistry. We demonstrated that inhibition of mPTPB with I-A09 in macrophages reverses the altered host immune responses induced by the bacterial phosphatase and prevents TB growth in host cells. The results provide the necessary proof-of-principle data to support the notion that specific inhibitors of the mPTPB may serve as effective antiTB therapeutics.
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45
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Targeting mycobacterium protein tyrosine phosphatase B for antituberculosis agents. Proc Natl Acad Sci U S A 2010; 107:4573-8. [PMID: 20167798 DOI: 10.1073/pnas.0909133107] [Citation(s) in RCA: 177] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Protein tyrosine phosphatases are often exploited and subverted by pathogenic bacteria to cause human diseases. The tyrosine phosphatase mPTPB from Mycobacterium tuberculosis is an essential virulence factor that is secreted by the bacterium into the cytoplasm of macrophages, where it mediates mycobacterial survival in the host. Consequently, there is considerable interest in understanding the mechanism by which mPTPB evades the host immune responses, and in developing potent and selective mPTPB inhibitors as unique antituberculosis (antiTB) agents. We uncovered that mPTPB subverts the innate immune responses by blocking the ERK1/2 and p38 mediated IL-6 production and promoting host cell survival by activating the Akt pathway. We identified a potent and selective mPTPB inhibitor I-A09 with highly efficacious cellular activity, from a combinatorial library of bidentate benzofuran salicylic acid derivatives assembled by click chemistry. We demonstrated that inhibition of mPTPB with I-A09 in macrophages reverses the altered host immune responses induced by the bacterial phosphatase and prevents TB growth in host cells. The results provide the necessary proof-of-principle data to support the notion that specific inhibitors of the mPTPB may serve as effective antiTB therapeutics.
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46
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Sisay MT, Hautmann S, Mehner C, König GM, Bajorath J, Gütschow M. Inhibition of human leukocyte elastase by brunsvicamides a-C: cyanobacterial cyclic peptides. ChemMedChem 2009; 4:1425-9. [PMID: 19569166 DOI: 10.1002/cmdc.200900139] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mihiret T Sisay
- Pharmaceutical Institute, Pharmaceutical Chemistry I, Rheinische Friedrich-Wilhelms-Universität Bonn, An der Immenburg 4, 53121 Bonn, Germany
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47
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Ramel C, Tobler M, Meyer M, Bigler L, Ebert MO, Schellenberg B, Dudler R. Biosynthesis of the proteasome inhibitor syringolin A: the ureido group joining two amino acids originates from bicarbonate. BMC BIOCHEMISTRY 2009; 10:26. [PMID: 19863801 PMCID: PMC2773804 DOI: 10.1186/1471-2091-10-26] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2009] [Accepted: 10/28/2009] [Indexed: 11/10/2022]
Abstract
BACKGROUND Syringolin A, an important virulence factor in the interaction of the phytopathogenic bacterium Pseudomonas syringae pv. syringae B728a with its host plant Phaseolus vulgaris (bean), was recently shown to irreversibly inhibit eukaryotic proteasomes by a novel mechanism. Syringolin A is synthesized by a mixed non-ribosomal peptide synthetase/polyketide synthetase and consists of a tripeptide part including a twelve-membered ring with an N-terminal valine that is joined to a second valine via a very unusual ureido group. Analysis of sequence and architecture of the syringolin A synthetase gene cluster with the five open reading frames sylA-sylE allowed to formulate a biosynthesis model that explained all structural features of the tripeptide part of syringolin A but left the biosynthesis of the unusual ureido group unaccounted for. RESULTS We have cloned a 22 kb genomic fragment containing the sylA-sylE gene cluster but no other complete gene into the broad host range cosmid pLAFR3. Transfer of the recombinant cosmid into Pseudomonas putida and P. syringae pv. syringae SM was sufficient to direct the biosynthesis of bona fide syringolin A in these heterologous organisms whose genomes do not contain homologous genes. NMR analysis of syringolin A isolated from cultures grown in the presence of NaH(13)CO(3) revealed preferential (13)C-labeling at the ureido carbonyl position. CONCLUSION The results show that no additional syringolin A-specific genes were needed for the biosynthesis of the enigmatic ureido group joining two amino acids. They reveal the source of the ureido carbonyl group to be bicarbonate/carbon dioxide, which we hypothesize is incorporated by carbamylation of valine mediated by the sylC gene product(s). A similar mechanism may also play a role in the biosynthesis of other ureido-group-containing NRPS products known largely from cyanobacteria.
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Affiliation(s)
- Christina Ramel
- Institute of Plant Biology and Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland.
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Ke D, Zhan C, Li X, Li AD, Yao J. The urea-dipeptides show stronger H-bonding propensity to nucleate β-sheetlike assembly than natural sequence. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gesner-Apter S, Carmeli S. Protease inhibitors from a water bloom of the cyanobacterium Microcystis aeruginosa. JOURNAL OF NATURAL PRODUCTS 2009; 72:1429-1436. [PMID: 19650639 DOI: 10.1021/np900340t] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bioassay-guided fractionation of the polar extract of a Microcystis aeruginosa water bloom biomass yielded 10 micropeptins and one anabaenopeptin. Eight of the micropeptins, micropeptins HU1069 (1), HU989 (2), HU1021 (3), HU1041 (4), HU975 (5), HU895A (6), HU909 (7), and HU895B (8), are new, while two, micropeptins 478-A (10) and 478-B (11), were previously isolated from a bloom of M. aeruginosa from Japan. The new anabaenopeptin HU892 (9) belongs to the relatively rare subgroup, presenting an aliphatic amino acid at the carboxylic end of the peptide and N-methylhomoaromatic amino acid at the second position. The structures of the compounds were determined by 1D and 2D NMR techniques and mass spectrometric data. The isolated micropeptins inhibited trypsin with IC(50)'s that varied between 0.7 and 5.2 microM and unexpectedly inhibited chymotrypsin with IC(50)'s that varied between 2.8 and 72.0 microM. The SAR of these micropeptins is discussed.
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Affiliation(s)
- Shiri Gesner-Apter
- Raymond and Beverly Sackler School of Chemistry and Faculty of Exact Sciences, Tel-Aviv University, Ramat Aviv, Tel-Aviv 69978, Israel
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Walther T, Renner S, Waldmann H, Arndt HD. Synthesis and structure-activity correlation of a brunsvicamide-inspired cyclopeptide collection. Chembiochem 2009; 10:1153-62. [PMID: 19360807 DOI: 10.1002/cbic.200900035] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyanobacterial cyclopeptides: A series of analogues of the cyanobacterial cyclopeptide brunsvicamide A was prepared by effective solid-support-based total synthesis. Variations in stereochemistry revealed the importance of the D-lysine and the L-isoleucine residues for the substrate-competitive inhibitory activity of brunsvicamide A against carboxypeptidase A. The brunsvicamides are modified cyclopeptides from cyanobacteria, cyclised through the epsilon-amino group of a D-lysine unit. They are functionalised with urea groups and show potent carboxypeptidase inhibitory activities. In order to unravel the structural parameters that determine their activities, a collection of brunsvicamide analogues with varied amino acid structures and stereochemistries was synthesised by a combined solution- and solid-phase approach. Biochemical investigation of the compound collection for carboxypeptidase A inhibition revealed that the presence of D-lysine and L-isoleucine in the urea section is important for inhibition. It was found that brunsvicamide A is a substrate-competitive inhibitor of carboxypeptidase A. These findings are in agreement with the substrate specificity of the enzyme and were rationalised by computational studies, which showed the high relevance of the lysine stereochemistry for inhibitory activity.
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Affiliation(s)
- Thilo Walther
- Technische Universität Dortmund, Fakultät Chemie, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
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