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Zhou L, Höfte M, Hennessy RC. Does regulation hold the key to optimizing lipopeptide production in Pseudomonas for biotechnology? Front Bioeng Biotechnol 2024; 12:1363183. [PMID: 38476965 PMCID: PMC10928948 DOI: 10.3389/fbioe.2024.1363183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/12/2024] [Indexed: 03/14/2024] Open
Abstract
Lipopeptides (LPs) produced by Pseudomonas spp. are specialized metabolites with diverse structures and functions, including powerful biosurfactant and antimicrobial properties. Despite their enormous potential in environmental and industrial biotechnology, low yield and high production cost limit their practical use. While genome mining and functional genomics have identified a multitude of LP biosynthetic gene clusters, the regulatory mechanisms underlying their biosynthesis remain poorly understood. We propose that regulation holds the key to unlocking LP production in Pseudomonas for biotechnology. In this review, we summarize the structure and function of Pseudomonas-derived LPs and describe the molecular basis for their biosynthesis and regulation. We examine the global and specific regulator-driven mechanisms controlling LP synthesis including the influence of environmental signals. Understanding LP regulation is key to modulating production of these valuable compounds, both quantitatively and qualitatively, for industrial and environmental biotechnology.
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Affiliation(s)
- Lu Zhou
- Laboratory of Phytopathology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Monica Höfte
- Laboratory of Phytopathology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Rosanna C. Hennessy
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
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2
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Hegazy GE, Abu-Serie MM, Abou-Elela GM, Ghozlan H, Sabry SA, Soliman NA, Teleb M, Abdel-Fattah YR. Bioprocess development for biosurfactant production by Natrialba sp. M6 with effective direct virucidal and anti-replicative potential against HCV and HSV. Sci Rep 2022; 12:16577. [PMID: 36195643 PMCID: PMC9531635 DOI: 10.1038/s41598-022-20091-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 09/08/2022] [Indexed: 11/09/2022] Open
Abstract
Halophilic archaea is considered an promising natural source of many important metabolites. This study focused on one of the surface-active biomolecules named biosurfactants produced by haloarchaeon Natrialba sp. M6. The production trend was optimized and the product was partially purified and identified using GC-Mass spectrometry. Sequential optimization approaches, Plackett-Burman (PB) and Box-Behnken Designs (BBD) were applied to maximize the biosurfactants production from M6 strain by using 14 factors; pH, NaCl, agitation and glycerol; the most significant factors that influenced the biosurfactant production were used for Response Surface Methodology (RSM). The final optimal production conditions were agitation (150 rpm), glycerol (3%), NaCl (20.8%), pH (12) and cultivation temperature (37°C). GC-Mass spectrometry for the recovered extract revealed the presence of a diverse group of bipolar nature, hydrophobic hydrocarbon chain and charged function group. The majority of these compounds are fatty acids. Based on results of GC-MS, compositional analysis content and Zetasizer, it was proposed that the extracted biosurfactant produced by haloarchaeon Natrialba sp. M6 could be a cationic lipoprotein. The antiviral activity of such biosurfactant was investigated against hepatitis C (HCV) and herpes simplex (HSV1) viruses at its maximum safe doses (20 μg/mL and 8 μg/mL, respectively). Its mode of antiviral action was declared to be primarily via deactivating viral envelopes thus preventing viral entry. Moreover, this biosurfactant inhibited RNA polymerase- and DNA polymerase-mediated viral replication at IC50 of 2.28 and 4.39 μg/mL, respectively also. Molecular docking studies showed that surfactin resided well and was bound to the specified motif with low and accepted binding energies (ΔG = - 5.629, - 6.997 kcal/mol) respectively. Therefore, such biosurfactant could be presented as a natural safe and effective novel antiviral agent.
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Affiliation(s)
- Ghada E Hegazy
- National Institute of Oceanography & Fisheries, NIOF-Egypt, Qaitbay Sq, El-Anfousy, Alexandria, 11865, Egypt.
| | - Marwa M Abu-Serie
- Medical Biotechnology Department, Genetic Engineering & Biotechnology Research Institute (GEBRI), City of Scientific Research & Technological Applications, Alexandria, Egypt
| | - G M Abou-Elela
- National Institute of Oceanography & Fisheries, NIOF-Egypt, Qaitbay Sq, El-Anfousy, Alexandria, 11865, Egypt
| | - Hanan Ghozlan
- Botany & Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Soraya A Sabry
- Botany & Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Nadia A Soliman
- Bioprocess Development Department, Genetic Engineering & Biotechnology Research Institute (GEBRI), City of Scientific Research & Technological Applications, New Borg El-Arab City, Universities & Research Institutes Zone, Alexandria, 21934, Egypt
| | - Mohamed Teleb
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Yasser R Abdel-Fattah
- Bioprocess Development Department, Genetic Engineering & Biotechnology Research Institute (GEBRI), City of Scientific Research & Technological Applications, New Borg El-Arab City, Universities & Research Institutes Zone, Alexandria, 21934, Egypt.
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3
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De Roo V, Verleysen Y, Kovács B, De Vleeschouwer M, Muangkaew P, Girard L, Höfte M, De Mot R, Madder A, Geudens N, Martins JC. An Nuclear Magnetic Resonance Fingerprint Matching Approach for the Identification and Structural Re-Evaluation of Pseudomonas Lipopeptides. Microbiol Spectr 2022; 10:e0126122. [PMID: 35876524 PMCID: PMC9431178 DOI: 10.1128/spectrum.01261-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/26/2022] [Indexed: 01/21/2023] Open
Abstract
Cyclic lipopeptides (CLiPs) are secondary metabolites secreted by a range of bacterial phyla. CLiPs from Pseudomonas in particular, display diverse structural variations in terms of the number of amino acid residues, macrocycle size, amino acid identity, and stereochemistry (e.g., d- versus l-amino acids). Reports detailing the discovery of novel or already characterized CLiPs from new sources appear regularly in literature. Increasingly, however, the lack of detailed characterization threatens to cause considerable confusion, especially if configurational heterogeneity is present for one or more amino acids. Using Pseudomonas CLiPs from the Bananamide, Orfamide, and Xantholysin groups as test cases, we demonstrate and validate that the combined 1H and 13C Nuclear Magnetic Resonance (NMR) chemical shifts of CLiPs constitute a spectral fingerprint that is sufficiently sensitive to differentiate between possible diastereomers of a particular sequence even when they only differ in a single d/l configuration. Rapid screening, involving simple matching of the NMR fingerprint of a newly isolated CLiP with that of a reference CLiP of known stereochemistry, can then be applied to resolve dead-ends in configurational characterization and avoid the much more cumbersome chemical characterization protocols. Even when the stereochemistry of a particular reference CLiP remains to be established, its spectral fingerprint allows to quickly verify whether a newly isolated CLiP is novel or already present in the reference collection. We show NMR fingerprinting leads to a simple approach for early on dereplication which should become more effective as more fingerprints are collected. To benefit research involving CLiPs, we have made a publicly available data repository accompanied by a 'knowledge base' at https://www.rhizoclip.be, where we present an overview of published NMR fingerprint data of characterized CLiPs, together with literature data on the originally determined structures. IMPORTANCE Pseudomonas CLiPs are ubiquitous specialized metabolites, impacting the producer's lifestyle and interactions with the (a)biotic environment. Consequently, they generate interest for agricultural and clinical applications. Establishing structure-activity relationships as a premise to their development is hindered because full structural characterization including stereochemical information requires labor-intensive analyses, without guarantee for success. Moreover, increasing use of superficial comparison with previously characterized CLiPs introduces or propagates erroneous attributions, clouding further scientific progress. We provide a generally applicable characterization methodology based on matching NMR spectral fingerprints of newly isolated CLiPs to natural and synthetic reference compounds with (un)known stereochemistry. In addition, NMR fingerprinting is shown to provide a suitable basis for structural dereplication. A publicly available reference compound repository promises to facilitate participation of the lipopeptide research community in structural assessment and dereplication of newly isolated CLiPs, which should also support further developments in genome mining for novel CLiPs.
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Affiliation(s)
- Vic De Roo
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Yentl Verleysen
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
- Organic and Biomimetic Chemistry Research Group, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Benjámin Kovács
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Matthias De Vleeschouwer
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
- Organic and Biomimetic Chemistry Research Group, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Penthip Muangkaew
- Organic and Biomimetic Chemistry Research Group, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Léa Girard
- Centre for Microbial and Plant Genetics, Faculty of Bioscience Engineering, KULeuven, Heverlee-Leuven, Belgium
| | - Monica Höfte
- Laboratory of Phytopathology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent, Belgium
| | - René De Mot
- Centre for Microbial and Plant Genetics, Faculty of Bioscience Engineering, KULeuven, Heverlee-Leuven, Belgium
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - Niels Geudens
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
| | - José C. Martins
- NMR and Structure Analysis Unit, Ghent University, Department of Organic and Macromolecular Chemistry, Ghent, Belgium
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4
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Murakami H, Murakami-Kawai M, Kamisuki S, Hisanobu S, Tsurukawa Y, Uchiyama J, Sakaguchi M, Tsukamoto K. Specific antiviral effect of violaceoid E on bovine leukemia virus. Virology 2021; 562:1-8. [PMID: 34242747 DOI: 10.1016/j.virol.2021.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/28/2022]
Abstract
Bovine leukemia virus (BLV) infection has spread worldwide causing significant economic losses in the livestock industry. In countries with a high prevalence of BLV, minimizing economic losses is challenging; thus, research into various countermeasures is important for improving BLV control. Because anti-BLV drugs have not been developed, the present study explored a promising chemical compound with anti-BLV activity. Initially, screening of a chemical compound library revealed that violaceoid E (vioE), which is isolated from fungus, showed antiviral activity. Further analysis demonstrated that the antiviral effect of vioE inhibited transcriptional activation of BLV. Cellular thermal shift assay and pulldown assays provided evidence for a direct interaction between vioE and the viral transactivator protein, Tax. These data indicate that interference with Tax-dependent transcription could be a novel target for development of anti-BLV drugs. Therefore, it is suggested that vioE is a novel antiviral compound against BLV.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Makoto Murakami-Kawai
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shinji Kamisuki
- Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shibasaki Hisanobu
- Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukine Tsurukawa
- Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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5
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Uchiyama C, Fukuda A, Mukaiyama M, Nakazawa Y, Kuramochi Y, Muguruma K, Arimoto M, Ninomiya A, Kako K, Katsuyama Y, Konno S, Taguchi A, Takayama K, Taniguchi A, Nagumo Y, Usui T, Hayashi Y. Structural Revision of Natural Cyclic Depsipeptide MA026 Established by Total Synthesis and Biosynthetic Gene Cluster Analysis. Angew Chem Int Ed Engl 2021; 60:8792-8797. [PMID: 33533101 DOI: 10.1002/anie.202015193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/16/2021] [Indexed: 11/06/2022]
Abstract
A revised structure of natural 14-mer cyclic depsipeptide MA026, isolated from Pseudomonas sp. RtlB026 in 2002 was established by physicochemical analysis with HPLC, MS/MS, and NMR and confirmed by total solid-phase synthesis. The revised structure differs from that previously reported in that two amino acid residues, assigned in error, have been replaced. Synthesized MA026 with the revised structure showed a tight junction (TJ) opening activity like that of the natural one in a cell-based TJ opening assay. Bioinformatic analysis of the putative MA026 biosynthetic gene cluster (BGC) of RtIB026 demonstrated that the stereochemistry of each amino acid residue in the revised structure can be reasonably explained. Phylogenetic analysis with xantholysin BGC indicates an exceptionally high homology (ca. 90 %) between xantholysin and MA026. The TJ opening activity of MA026 when binding to claudin-1 is a key to new avenues for transdermal administration of large hydrophilic biologics.
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Affiliation(s)
- Chihiro Uchiyama
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Akane Fukuda
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Minagi Mukaiyama
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Yoshiki Nakazawa
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yuka Kuramochi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kyohei Muguruma
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.,Present address: Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo, 152-8552, Japan
| | - Mitsue Arimoto
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Akihiro Ninomiya
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Koichiro Kako
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Yohei Katsuyama
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Sho Konno
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Akihiro Taguchi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kentaro Takayama
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Atsuhiko Taniguchi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yoko Nagumo
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Takeo Usui
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Yoshio Hayashi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
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6
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Uchiyama C, Fukuda A, Mukaiyama M, Nakazawa Y, Kuramochi Y, Muguruma K, Arimoto M, Ninomiya A, Kako K, Katsuyama Y, Konno S, Taguchi A, Takayama K, Taniguchi A, Nagumo Y, Usui T, Hayashi Y. Structural Revision of Natural Cyclic Depsipeptide MA026 Established by Total Synthesis and Biosynthetic Gene Cluster Analysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chihiro Uchiyama
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Akane Fukuda
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Minagi Mukaiyama
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Yoshiki Nakazawa
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yuka Kuramochi
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Kyohei Muguruma
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
- Present address: Department of Chemical Science and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo 152-8552 Japan
| | - Mitsue Arimoto
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Akihiro Ninomiya
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Koichiro Kako
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Yohei Katsuyama
- Department of Biotechnology Graduate School of Agricultural and Life Sciences The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku Tokyo 113-8657 Japan
- Collaborative Research Institute for Innovative Microbiology The University of Tokyo Bunkyo-ku Tokyo 113-8657 Japan
| | - Sho Konno
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Akihiro Taguchi
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Kentaro Takayama
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Atsuhiko Taniguchi
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Yoko Nagumo
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Takeo Usui
- Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan
| | - Yoshio Hayashi
- Department of Medicinal Chemistry School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
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7
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Takakusagi Y, Takakusagi K, Sakaguchi K, Sugawara F. Phage display technology for target determination of small-molecule therapeutics: an update. Expert Opin Drug Discov 2020; 15:1199-1211. [DOI: 10.1080/17460441.2020.1790523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yoichi Takakusagi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
- Institute of Quantum Life Science (iQLS), National Institutes of Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Kaori Takakusagi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
- Institute of Quantum Life Science (iQLS), National Institutes of Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - Kengo Sakaguchi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Fumio Sugawara
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
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8
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Mailly L, Baumert TF. Hepatitis C virus infection and tight junction proteins: The ties that bind. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183296. [PMID: 32268133 DOI: 10.1016/j.bbamem.2020.183296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 02/07/2023]
Abstract
The hepatitis C virus (HCV) is a major cause of liver diseases ranging from liver inflammation to advanced liver diseases like cirrhosis and hepatocellular carcinoma (HCC). HCV infection is restricted to the liver, and more specifically to hepatocytes, which represent around 80% of liver cells. The mechanism of HCV entry in human hepatocytes has been extensively investigated since the discovery of the virus 30 years ago. The entry mechanism is a multi-step process relying on several host factors including heparan sulfate proteoglycan (HSPG), low density lipoprotein receptor (LDLR), tetraspanin CD81, Scavenger Receptor class B type I (SR-BI), Epidermal Growth Factor Receptor (EGFR) and Niemann-Pick C1-like 1 (NPC1L1). Moreover, in order to establish a persistent infection, HCV entry is dependent on the presence of tight junction (TJ) proteins Claudin-1 (CLDN1) and Occludin (OCLN). In the liver, tight junction proteins play a role in architecture and homeostasis including sealing the apical pole of adjacent cells to form bile canaliculi and separating the basolateral domain drained by sinusoidal blood flow. In this review, we will highlight the role of liver tight junction proteins in HCV infection, and we will discuss the potential targeted therapeutic approaches to improve virus eradication.
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Affiliation(s)
- Laurent Mailly
- Université de Strasbourg, INSERM, UMR-S1110, Institut de Recherche sur les Maladies Virales et Hépatiques, F-67000 Strasbourg, France.
| | - Thomas F Baumert
- Université de Strasbourg, INSERM, UMR-S1110, Institut de Recherche sur les Maladies Virales et Hépatiques, F-67000 Strasbourg, France; Pôle Hépato-digestif, Hôpitaux Universitaires de Strasbourg, F-67000 Strasbourg, France; Institut Universitaire de France, F-75231 Paris, France.
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9
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[Hepatitis C virus research so far and in the future]. Uirusu 2020; 70:129-134. [PMID: 34544927 DOI: 10.2222/jsv.70.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The 2020 Nobel Prize in Physiology or Medicine was awarded to three researchers who contributed to the development of the disease concept ''non-A, non-B hepatitis'' and the isolation of its causative agent, hepatitis C virus (HCV). Technologies and experimental systems to analyze HCV have been greatly improved for these three decades, and the antiviral treatments against HCV have been developed. This review summarizes the effort to elucidate the HCV biology so far and the remaining subject to be solved in the future. I also introduce the studies to identify bioactive natural products by taking advantage of the HCV infection cell culture system.
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10
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Götze S, Stallforth P. Structure elucidation of bacterial nonribosomal lipopeptides. Org Biomol Chem 2020; 18:1710-1727. [DOI: 10.1039/c9ob02539a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We provide a summary of the tools, which allow elucidate the structures of nonribosomal lipopetides.
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Affiliation(s)
- Sebastian Götze
- Department of Paleobiotechnology
- Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI)
- 07745 Jena
- Germany
| | - Pierre Stallforth
- Department of Paleobiotechnology
- Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI)
- 07745 Jena
- Germany
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11
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Götze S, Stallforth P. Structure, properties, and biological functions of nonribosomal lipopeptides from pseudomonads. Nat Prod Rep 2020; 37:29-54. [DOI: 10.1039/c9np00022d] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Bacteria of the genusPseudomonasdisplay a fascinating metabolic diversity. In this review, we focus our attention on the natural product class of nonribosomal lipopeptides, which help pseudomonads to colonize a wide range of ecological niches.
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Affiliation(s)
- Sebastian Götze
- Faculty 7: Natural and Environmental Sciences
- Institute for Environmental Sciences
- University Koblenz Landau
- 76829 Landau
- Germany
| | - Pierre Stallforth
- Junior Research Group Chemistry of Microbial Communication
- Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI)
- 07745 Jena
- Germany
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12
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Geudens N, Martins JC. Cyclic Lipodepsipeptides From Pseudomonas spp. - Biological Swiss-Army Knives. Front Microbiol 2018; 9:1867. [PMID: 30158910 PMCID: PMC6104475 DOI: 10.3389/fmicb.2018.01867] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/25/2018] [Indexed: 12/20/2022] Open
Abstract
Cyclic lipodepsipeptides produced by Pseudomonas spp. (Ps-CLPs) are biosurfactants that constitute a diverse class of versatile bioactive natural compounds with promising application potential. While chemically diverse, they obey a common structural blue-print, allowing the definition of 14 distinct groups with multiple structurally homologous members. In addition to antibacterial and antifungal properties the reported activity profile of Ps-CLPs includes their effect on bacterial motility, biofilm formation, induced defense responses in plants, their insecticidal activity and anti-proliferation effects on human cancer cell-lines. To further validate their status of potential bioactive substances, we assessed the results of 775 biological tests on 51 Ps-CLPs available from literature. From this, a fragmented view emerges. Taken as a group, Ps-CLPs present a broad activity profile. However, reports on individual Ps-CLPs are often much more limited in the scope of organisms that are challenged or activities that are explored. As a result, our analysis shows that the available data is currently too sparse to allow biological function to be correlated to a particular group of Ps-CLPs. Consequently, certain generalizations that appear in literature with respect to the biological activities of Ps-CLPs should be nuanced. This notwithstanding, the data for the two most extensively studied Ps-CLPs does indicate they can display activities against various biological targets. As the discovery of novel Ps-CLPs accelerates, current challenges to complete and maintain a useful overview of biological activity are discussed.
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Affiliation(s)
- Niels Geudens
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - José C Martins
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, Belgium
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13
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Kamisuki S, Himeno N, Tsurukawa Y, Kusayanagi T, Takeno M, Kamakura T, Kuramochi K, Sugawara F. Identification of proteins that bind to the neuroprotective agent neoechinulin A. Biosci Biotechnol Biochem 2018; 82:442-448. [PMID: 29447077 DOI: 10.1080/09168451.2018.1433018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neoechinulin A is an indole alkaloid with several biological activities. We previously reported that this compound protects neuronal PC12 cells from cytotoxicity induced by the peroxynitrite generator 3-morpholinosydnonimine (SIN-1), but the target proteins and precise mechanism of action of neoechinulin A were unclear. Here, we employed a phage display screen to identify proteins that bind directly with neoechinulin A. Our findings identified two proteins, chromogranin B and glutaredoxin 3, as candidate target binding partners for the alkaloid. QCM analyses revealed that neoechinulin A displays high affinity for both chromogranin B and glutaredoxin 3. RNA interference-mediated depletion of chromogranin B decreased the sensitivity of PC12 cells against SIN-1. Our results suggested chromogranin B is a plausible target of neoechinulin A.
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Affiliation(s)
- Shinji Kamisuki
- a School of Veterinary Medicine , Azabu University , Kanagawa , Japan
| | - Natsumi Himeno
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Yukine Tsurukawa
- a School of Veterinary Medicine , Azabu University , Kanagawa , Japan
| | - Tomoe Kusayanagi
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Masahiro Takeno
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Takashi Kamakura
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Kouji Kuramochi
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
| | - Fumio Sugawara
- b Department of Applied Biological Science , Tokyo University of Science , Chiba , Japan
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14
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Hashimoto Y, Fukasawa M, Kuniyasu H, Yagi K, Kondoh M. Claudin-targeted drug development using anti-claudin monoclonal antibodies to treat hepatitis and cancer. Ann N Y Acad Sci 2017; 1397:5-16. [PMID: 28415141 DOI: 10.1111/nyas.13337] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 02/22/2017] [Accepted: 02/23/2017] [Indexed: 12/26/2022]
Abstract
The 27-member family of tetraspan membrane proteins known as claudins (CLDNs) is a major component of tight junctions. A series of studies elucidating the relationship between CLDNs and various pathological conditions has provided new insights into drug development. For instance, CLDN-1 may be a potent target for epidermal absorption of drugs and for treating hepatitis C virus (HCV) infection. CLDN-4 may be a target for treating cancer. Because CLDNs are also expressed in various normal tissues, safety and efficacy evaluations are critical for translational research. We previously developed several anti-CLDN antibodies and have established proof of concept for CLDN-targeted drug development using these reagents. Here, we provide an overview of CLDN-1 as a target for improving epidermal drug absorption and preventing HCV infection and of CLDN-4 as a target for anticancer therapeutics.
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Affiliation(s)
- Yosuke Hashimoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Masayoshi Fukasawa
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroki Kuniyasu
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Kiyohito Yagi
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Masuo Kondoh
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
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15
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Watanabe R, Mizoguchi H, Oikawa H, Ohashi H, Watashi K, Oguri H. Stereo-controlled synthesis of functionalized tetrahydropyridines based on the cyanomethylation of 1,6-dihydropyridines and generation of anti-hepatitis C virus agents. Bioorg Med Chem 2017; 25:2851-2855. [PMID: 28314509 DOI: 10.1016/j.bmc.2017.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/01/2017] [Accepted: 03/05/2017] [Indexed: 12/12/2022]
Abstract
Densely functionalized tetrahydropyridines were stereoselectively synthesized from 1,6-dihydropyridines. Exploiting a carbonyl group installed at the C3 position of the 1,6-dihydropyridine system, we devised a strategy for cyanomethylation at C2/C6 and subsequent divergent installation of an allyl group at C3/C5 in a highly regio- and stereo-controlled manner. This versatile protocol for programmable functionalization of the 1,6-dihydropyridine system allows the divergent and streamlined synthesis of multiply-substituted tetrahydropyridines as an important class of biologically and medicinally relevant scaffolds. Two of the N-heterocyclic compounds bearing an alkyl nitrile group showed anti-hepatitis C virus (HCV) activity.
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Affiliation(s)
- Ryo Watanabe
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Haruki Mizoguchi
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Hideaki Oikawa
- Division of Chemistry, Graduate School of Science, Hokkaido University, North 10 West 8, Sapporo 060-0810, Japan
| | - Hirofumi Ohashi
- Department of Virology II, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Graduate School of Science and Technology, Noda, Chiba 278-8510, Japan
| | - Koichi Watashi
- Department of Virology II, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo 162-8640, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Graduate School of Science and Technology, Noda, Chiba 278-8510, Japan; JST, CREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Hiroki Oguri
- Division of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan; JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
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16
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Current therapy for chronic hepatitis C: The role of direct-acting antivirals. Antiviral Res 2017; 142:83-122. [PMID: 28238877 PMCID: PMC7172984 DOI: 10.1016/j.antiviral.2017.02.014] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/07/2017] [Accepted: 02/22/2017] [Indexed: 12/12/2022]
Abstract
One of the most exciting developments in antiviral research has been the discovery of the direct-acting antivirals (DAAs) that effectively cure chronic hepatitis C virus (HCV) infections. Based on more than 100 clinical trials and real-world studies, we provide a comprehensive overview of FDA-approved therapies and newly discovered anti-HCV agents with a special focus on drug efficacy, mechanisms of action, and safety. We show that HCV drug development has advanced in multiple aspects: (i) interferon-based regimens were replaced by interferon-free regimens; (ii) genotype-specific drugs evolved to drugs for all HCV genotypes; (iii) therapies based upon multiple pills per day were simplified to a single pill per day; (iv) drug potency increased from moderate (∼60%) to high (>90%) levels of sustained virologic responses; (v) treatment durations were shortened from 48 to 12 or 8 weeks; and (vi) therapies could be administered orally regardless of prior treatment history and cirrhotic status. However, despite these remarkable achievements made in HCV drug discovery, challenges remain in the management of difficult-to-treat patients. HCV genotype-specific drugs evolve to pan-genotypic drugs. Drug potency increases from moderate (∼60%) to high (>90%) levels of sustained virologic response. Treatment durations are shortened from a 48-week to 12-week or 8-week period. HCV therapies based upon multiple pills per day are simplified to a single pill per day. HCV therapies are administered orally regardless of prior treatment history and cirrhotic status.
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17
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Kanda Y, Yamasaki Y, Shimura S, Kamisuki S, Sugawara F, Nagumo Y, Usui T. MA026, an anti-hepatitis C virus compound, opens tight junctions of the epithelial cell membrane. J Antibiot (Tokyo) 2017; 70:691-694. [PMID: 28096546 DOI: 10.1038/ja.2016.168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 12/09/2016] [Accepted: 12/15/2016] [Indexed: 11/10/2022]
Abstract
MA026 is an antiviral natural compound against hepatitis C virus (HCV). It was recently reported that MA026 binds claudin-1 (CLDN1) and inhibits HCV infection. Although CLDN1 is an important component of tight junctions (TJ) in the epithelial cell layer, the effects of MA026 on the TJ barrier function remained to be revealed. Here we report that MA026 irreversibly opens the TJ. MA026 irreversibly increased FD4 permeability and decreased transepithelial electrical resistance (TER) for at least 5 h. Although MA026 increased Ca2+ influx in layered MDCKII cells, the Ca2+ influx was less than that of capsaicin, a reversible TJ opener. Moreover, MA026 did not induce the dephosphorylation of cofilin and reorganization of F-actin structure. Although the mechanism is left to be disclosed, these results suggest that MA026 is a novel irreversible TJ opener probably by targeting CLDN1.
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Affiliation(s)
- Yusuke Kanda
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Youhei Yamasaki
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Satomi Shimura
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Shinji Kamisuki
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Fumio Sugawara
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Yoko Nagumo
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Takeo Usui
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
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18
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De Vleeschouwer M, Sinnaeve D, Matthijs N, Coenye T, Madder A, Martins JC. Synthesis of N-Methylated Pseudodesmin A Analogues: on the Structural Importance of N-H Hydrogen Bonds. ChemistrySelect 2017. [DOI: 10.1002/slct.201601791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Matthias De Vleeschouwer
- Organic and Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Davy Sinnaeve
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - Nele Matthijs
- Laboratory of Pharmaceutical Microbiology; Ghent University; Ottergemsesteenweg 460 9000 Ghent
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology; Ghent University; Ottergemsesteenweg 460 9000 Ghent
| | - Annemieke Madder
- Organic and Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
| | - José C. Martins
- NMR and structure analysis unit; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 S4 9000 Ghent Belgium
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19
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Kanoh N. Photo-cross-linked small-molecule affinity matrix as a tool for target identification of bioactive small molecules. Nat Prod Rep 2016; 33:709-18. [DOI: 10.1039/c5np00117j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review describes the status of the photo-cross-linked small-molecule affinity matrix while providing a useful tutorial for academic and industrial chemical biologists who are involved or interested in drug target identification.
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Affiliation(s)
- Naoki Kanoh
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
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20
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Ridaifen G, tamoxifen analog, is a potent anticancer drug working through a combinatorial association with multiple cellular factors. Bioorg Med Chem 2015; 23:6118-24. [DOI: 10.1016/j.bmc.2015.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 07/31/2015] [Accepted: 08/01/2015] [Indexed: 12/31/2022]
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21
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Shen Z, Chen M, Fang T, Li M, Mo W, Hu B, Sun N, Hu X. Transformation of ethers into aldehydes or ketones: a catalytic aerobic deprotection/oxidation pathway. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Tsakos M, Schaffert ES, Clement LL, Villadsen NL, Poulsen TB. Ester coupling reactions – an enduring challenge in the chemical synthesis of bioactive natural products. Nat Prod Rep 2015; 32:605-32. [DOI: 10.1039/c4np00106k] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this review we investigate the use of complex ester fragment couplings within natural product total syntheses. Using examples from the literature up to 2014 we illustrate the state-of-the-art as well as the challenges within this area of organic synthesis.
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Affiliation(s)
- Michail Tsakos
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Eva S. Schaffert
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Lise L. Clement
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Nikolaj L. Villadsen
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
| | - Thomas B. Poulsen
- Chemical Biology Laboratory
- Department of Chemistry
- Aarhus University
- Aarhus C
- Denmark
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23
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Geudens N, De Vleeschouwer M, Fehér K, Rokni-Zadeh H, Ghequire MGK, Madder A, De Mot R, Martins JC, Sinnaeve D. Impact of a stereocentre inversion in cyclic lipodepsipeptides from the viscosin group: a comparative study of the viscosinamide and pseudodesmin conformation and self-assembly. Chembiochem 2014; 15:2736-46. [PMID: 25382202 DOI: 10.1002/cbic.201402389] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Indexed: 01/21/2023]
Abstract
The viscosin group covers a series of cyclic lipodepsipeptides (CLPs) produced by Pseudomonas bacteria, with a range of biological functions and antimicrobial activities. Their oligopeptide moieties are composed of both L- and D-amino acids. Remarkably, the Leu5 amino acid-centrally located in the nonapeptide sequence-is the sole residue found to possess either an L or D configuration, depending on the producing strain. The impact of this D/L switch on the solution conformation was investigated by NMR-restrained molecular modelling of the epimers pseudodesmin A and viscosinamide A. Although the backbone fold remained unaffected, the D/L switch adjusted the segregation between hydrophobic and hydrophilic residues, and thus the amphipathicity. It also influenced the self-assembly capacity in organic solvents. Additionally, several new minor variants of viscosinamide A from Pseudomonas fluorescens DR54 were identified, and an NMR assay is proposed to assess the presence of either an L- or D-Leu5.
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Affiliation(s)
- Niels Geudens
- NMR and Structure Analysis Unit, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
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24
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De Vleeschouwer M, Sinnaeve D, Van den Begin J, Coenye T, Martins JC, Madder A. Rapid Total Synthesis of Cyclic Lipodepsipeptides as a Premise to Investigate their Self‐Assembly and Biological Activity. Chemistry 2014; 20:7766-75. [DOI: 10.1002/chem.201402066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Matthias De Vleeschouwer
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Davy Sinnaeve
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Jos Van den Begin
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Harelbekestraat 72, 9000 Ghent (Belgium)
| | - José C. Martins
- Department of Organic Chemistry, NMR and Structure Analysis Unit, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
| | - Annemieke Madder
- Department of Organic Chemistry, Organic and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan 281 S4, 9000 Ghent (Belgium)
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