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Krumpe LRH, Wilson BAP, Marchand C, Sunassee SN, Bermingham A, Wang W, Price E, Guszczynski T, Kelley JA, Gustafson KR, Pommier Y, Rosengren KJ, Schroeder CI, O'Keefe BR. Recifin A, Initial Example of the Tyr-Lock Peptide Structural Family, Is a Selective Allosteric Inhibitor of Tyrosyl-DNA Phosphodiesterase I. J Am Chem Soc 2020; 142:21178-21188. [PMID: 33263997 DOI: 10.1021/jacs.0c10418] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Tyrosyl-DNA phosphodiesterase 1 (TDP1) is a molecular target for the sensitization of cancer cells to the FDA-approved topoisomerase inhibitors topotecan and irinotecan. High-throughput screening of natural product extract and fraction libraries for inhibitors of TDP1 activity resulted in the discovery of a new class of knotted cyclic peptides from the marine sponge Axinella sp. Bioassay-guided fractionation of the source extract resulted in the isolation of the active component which was determined to be an unprecedented 42-residue cysteine-rich peptide named recifin A. The native NMR structure revealed a novel fold comprising a four strand antiparallel β-sheet and two helical turns stabilized by a complex disulfide bond network that creates an embedded ring around one of the strands. The resulting structure, which we have termed the Tyr-lock peptide family, is stabilized by a tyrosine residue locked into three-dimensional space. Recifin A inhibited the cleavage of phosphodiester bonds by TDP1 in a FRET assay with an IC50 of 190 nM. Enzyme kinetics studies revealed that recifin A can specifically modulate the enzymatic activity of full-length TDP1 while not affecting the activity of a truncated catalytic domain of TDP1 lacking the N-terminal regulatory domain (Δ1-147), suggesting an allosteric binding site for recifin A on the regulatory domain of TDP1. Recifin A represents both the first of a unique structural class of knotted disulfide-rich peptides and defines a previously unseen mechanism of TDP1 inhibition that could be productively exploited for potential anticancer applications.
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Affiliation(s)
- Lauren R H Krumpe
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States.,Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Brice A P Wilson
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Christophe Marchand
- Developmental Therapeutics Branch, Laboratory of Molecular Pharmacology, NCI, NIH, Bethesda, Maryland 20892, United States
| | - Suthananda N Sunassee
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Alun Bermingham
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Wenjie Wang
- Developmental Therapeutics Branch, Laboratory of Molecular Pharmacology, NCI, NIH, Bethesda, Maryland 20892, United States
| | - Edmund Price
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Tad Guszczynski
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - James A Kelley
- Chemical Biology Laboratory, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Kirk R Gustafson
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States
| | - Yves Pommier
- Developmental Therapeutics Branch, Laboratory of Molecular Pharmacology, NCI, NIH, Bethesda, Maryland 20892, United States
| | - K Johan Rosengren
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Christina I Schroeder
- Chemical Biology Laboratory, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Barry R O'Keefe
- Molecular Targets Program, Center for Cancer Research, NCI-Frederick, NIH, Frederick, Maryland 21702, United States.,Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
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2
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Orive-Milla N, Delmulle T, de Mey M, Faijes M, Planas A. Metabolic engineering for glycoglycerolipids production in E. coli: Tuning phosphatidic acid and UDP-glucose pathways. Metab Eng 2020; 61:106-119. [PMID: 32492511 DOI: 10.1016/j.ymben.2020.05.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 05/04/2020] [Accepted: 05/25/2020] [Indexed: 12/12/2022]
Abstract
Glycolipids are target molecules in biotechnology and biomedicine as biosurfactants, biomaterials and bioactive molecules. An engineered E. coli strain for the production of glycoglycerolipids (GGL) used the MG517 glycolipid synthase from M. genitalium for glucosyl transfer from UDPGlc to diacylglycerol acceptor (Mora-Buyé et al., 2012). The intracellular diacylglycerol pool proved to be the limiting factor for GGL production. Here we designed different metabolic engineering strategies to enhance the availability of precursor substrates for the glycolipid synthase by modulating fatty acids, acyl donor and phosphatidic acid biosynthesis. Knockouts of tesA, fadE and fabR genes involved in fatty acids degradation, overexpression of the transcriptional regulator FadR, the acyltransferases PlsB and C, and the pyrophosphatase Cdh for phosphatidic acid biosynthesis, as well as the phosphatase PgpB for conversion to diacylglycerol were explored with the aim of improving GGL titers. Among the different engineered strains, the ΔtesA strain co-expressing MG517 and a fusion PlsCxPgpB protein was the best producer, with a 350% increase of GGL titer compared to the parental strain expressing MG517 alone. Attempts to boost UDPGlc availability by overexpressing the uridyltransferase GalU or knocking out the UDP-sugar diphosphatase encoding gene ushA did not further improve GGL titers. Most of the strains produced GGL containing a variable number of glucosyl units from mono-to tetra-saccharides. Interestingly, the strains co-expressing Cdh showed a shift in the GGL profile towards the diglucosylated lipid (up to 80% of total GGLs) whereas the strains with a fadR knockout presented a higher amount of unsaturated acyl chains. In all cases, GGL production altered the lipidic composition of the E. coli membrane, observing that GGL replace phosphatidylethanolamine to maintain the overall membrane charge balance.
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Affiliation(s)
- Nuria Orive-Milla
- Laboratory of Biochemistry, Institut Químic de Sarrià, University Ramon Llull, Via Augusta 350, E-08017, Barcelona, Spain
| | - Tom Delmulle
- Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Marjan de Mey
- Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Magda Faijes
- Laboratory of Biochemistry, Institut Químic de Sarrià, University Ramon Llull, Via Augusta 350, E-08017, Barcelona, Spain.
| | - Antoni Planas
- Laboratory of Biochemistry, Institut Químic de Sarrià, University Ramon Llull, Via Augusta 350, E-08017, Barcelona, Spain.
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3
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Cheng-Sánchez I, Sarabia F. Chemistry and Biology of Bioactive Glycolipids of Marine Origin. Mar Drugs 2018; 16:E294. [PMID: 30135377 DOI: 10.3390/md16090294] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/09/2018] [Accepted: 08/15/2018] [Indexed: 12/17/2022] Open
Abstract
Glycolipids represent a broad class of natural products structurally featured by a glycosidic fragment linked to a lipidic molecule. Despite the large structural variety of these glycoconjugates, they can be classified into three main groups, i.e., glycosphingolipids, glycoglycerolipids, and atypical glycolipids. In the particular case of glycolipids derived from marine sources, an impressive variety in their structural features and biological properties is observed, thus making them prime targets for chemical synthesis. In the present review, we explore the chemistry and biology of this class of compounds.
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Esposito G, Teta R, Della Sala G, Pawlik JR, Mangoni A, Costantino V. Isolation of Smenopyrone, a Bis-γ-Pyrone Polypropionate from the Caribbean Sponge Smenospongia aurea. Mar Drugs 2018; 16:E285. [PMID: 30126132 DOI: 10.3390/md16080285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/07/2018] [Accepted: 08/15/2018] [Indexed: 12/18/2022] Open
Abstract
The organic extract of the Caribbean sponge Smenospongia aurea has been shown to contain an array of novel chlorinated secondary metabolites derived from a mixed PKS-NRPS biogenetic route such as the smenamides. In this paper, we report the presence of a biogenetically different compound known as smenopyrone, which is a polypropionate containing two γ-pyrone rings. The structure of smenopyrone including its relative and absolute stereochemistry was determined by spectroscopic analysis (NMR, MS, ECD) and supported by a comparison with model compounds from research studies. Pyrone polypropionates are unprecedented in marine sponges but are commonly found in marine mollusks where their biosynthesis by symbiotic bacteria has been hypothesized and at least in one case demonstrated. Since pyrones have recently been recognized as bacterial signaling molecules, we speculate that smenopyrone could mediate inter-kingdom chemical communication between S. aurea and its symbiotic bacteria.
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Caso A, Laurenzana I, Lamorte D, Trino S, Esposito G, Piccialli V, Costantino V. Smenamide A Analogues. Synthesis and Biological Activity on Multiple Myeloma Cells. Mar Drugs 2018; 16:E206. [PMID: 29899231 PMCID: PMC6025564 DOI: 10.3390/md16060206] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/05/2018] [Accepted: 06/10/2018] [Indexed: 02/06/2023] Open
Abstract
Smenamides are an intriguing class of peptide/polyketide molecules of marine origin showing antiproliferative activity against lung cancer Calu-1 cells at nanomolar concentrations through a clear pro-apoptotic mechanism. To probe the role of the activity-determining structural features, the 16-epi-analogue of smenamide A and eight simplified analogues in the 16-epi series were prepared using a flexible synthetic route. The synthetic analogues were tested on multiple myeloma (MM) cell lines showing that the configuration at C-16 slightly affects the activity, since the 16-epi-derivative is still active at nanomolar concentrations. Interestingly, it was found that the truncated compound 8, mainly composed of the pyrrolinone terminus, was not active, while compound 13, essentially lacking the pyrrolinone moiety, was 1000-fold less active than the intact substance and was the most active among all the synthesized compounds.
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Affiliation(s)
- Alessia Caso
- Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Ilaria Laurenzana
- Laboratory of Pre-Clinical and Translational Research, IRCCS-Referral Cancer Center of Basilicata (CROB), 85028 Rionero in Vulture, Italy.
| | - Daniela Lamorte
- Laboratory of Pre-Clinical and Translational Research, IRCCS-Referral Cancer Center of Basilicata (CROB), 85028 Rionero in Vulture, Italy.
| | - Stefania Trino
- Laboratory of Pre-Clinical and Translational Research, IRCCS-Referral Cancer Center of Basilicata (CROB), 85028 Rionero in Vulture, Italy.
| | - Germana Esposito
- Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Vincenzo Piccialli
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 4, 80126 Naples, Italy.
| | - Valeria Costantino
- Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
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Costantino V, Della Sala G, Saurav K, Teta R, Bar-Shalom R, Mangoni A, Steindler L. Plakofuranolactone as a Quorum Quenching Agent from the Indonesian Sponge Plakortis cf. lita. Mar Drugs 2017; 15:md15030059. [PMID: 28264490 PMCID: PMC5367016 DOI: 10.3390/md15030059] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 02/09/2017] [Accepted: 02/22/2017] [Indexed: 01/25/2023] Open
Abstract
There is an urgent need for novel strategies to fight drug resistance and multi-drug resistance. As an alternative to the classic antibiotic therapy, attenuation of the bacteria virulence affecting their Quorum sensing (QS) system is a promising approach. Quorum sensing (QS) is a genetic regulation system that allows bacteria to communicate with each other and coordinate group behaviors. A new γ-lactone that is capable of inhibiting the LasI/R QS system, plakofuranolactone (1), was discovered in the extract of the marine sponge Plakortis cf. lita, and its structure, including absolute configuration, was determined by NMR spectroscopy, MS spectrometry, and quantum-mechanical prediction of optical rotation. The quorum quenching activity of plakofuranolactone was evaluated using reporter gene assays for long- and short-chain signals (E. coli pSB1075, E. coli pSB401, and C. violeaceum CV026) and was confirmed by measuring the total protease activity (a virulence factor which is under control of the LasI/R system) of the wild-type P. aeruginosa PAO1. Further research will be pursued to assess the potential of plakofuranolactone as a new antivirulence lead compound and a chemical tool to increase the knowledge in this field.
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Affiliation(s)
- Valeria Costantino
- The Blue Chemistry Lab Group, Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Gerardo Della Sala
- The Blue Chemistry Lab Group, Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Kumar Saurav
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Mt. Carmel, 31905 Haifa, Israel.
| | - Roberta Teta
- The Blue Chemistry Lab Group, Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Rinat Bar-Shalom
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Mt. Carmel, 31905 Haifa, Israel.
| | - Alfonso Mangoni
- The Blue Chemistry Lab Group, Department of Pharmacy, University of Naples Federico II, 80131 Napoli, Italy.
| | - Laura Steindler
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Mt. Carmel, 31905 Haifa, Israel.
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Esposito G, Bourguet-Kondracki ML, Mai LH, Longeon A, Teta R, Meijer L, Van Soest R, Mangoni A, Costantino V. Chloromethylhalicyclamine B, a Marine-Derived Protein Kinase CK1δ/ε Inhibitor. J Nat Prod 2016; 79:2953-2960. [PMID: 27933894 DOI: 10.1021/acs.jnatprod.6b00939] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The halogenated alkaloid chloromethylhalicyclamine B (1), together with the known natural compound halicyclamine B (2), was isolated from the extract of the sponge Acanthostrongylophora ingens. The structure of compound 1 was determined by spectroscopic means, and it was shown that 1 is produced by reaction of 2 with CH2Cl2 used for extraction. Compound 1 was a selective CK1δ/ε inhibitor with an IC50 of 6 μM, while the natural compound 2 was inactive. The absolute configuration of 1 was determined by quantum mechanical calculation of its ECD spectrum, and this also determined the previously unknown absolute configuration of the parent halicyclamine B (2). Computational studies, validated by NOESY data, showed that compound 1 can efficiently interact with the ATP-binding site of CK1δ in spite of its globular structure, very different from the planar structure of known inhibitors of CK1δ. This opens the way to the design of a new structural type of CK1δ/ε inhibitors.
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Affiliation(s)
- Germana Esposito
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle , 57 Rue Cuvier (C.P. 54), 75005 Paris, France
| | - Marie-Lise Bourguet-Kondracki
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle , 57 Rue Cuvier (C.P. 54), 75005 Paris, France
| | - Linh H Mai
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle , 57 Rue Cuvier (C.P. 54), 75005 Paris, France
| | - Arlette Longeon
- Laboratoire Molécules de Communication et Adaptation des Micro-organismes, UMR 7245 CNRS, Muséum National d'Histoire Naturelle , 57 Rue Cuvier (C.P. 54), 75005 Paris, France
| | - Roberta Teta
- The NeaNat Group, Dipartimento di Farmacia, Università degli Studi di Napoli Federico II , Via D. Montesano 49, 80131 Napoli, Italy
| | - Laurent Meijer
- ManRos Therapeutics, Perharidy Research Center , 29680 Roscoff, France
| | - Rob Van Soest
- Naturalis Biodiversity Center , P.O. Box 9517, 2300 RA Leiden, The Netherlands
| | - Alfonso Mangoni
- The NeaNat Group, Dipartimento di Farmacia, Università degli Studi di Napoli Federico II , Via D. Montesano 49, 80131 Napoli, Italy
| | - Valeria Costantino
- The NeaNat Group, Dipartimento di Farmacia, Università degli Studi di Napoli Federico II , Via D. Montesano 49, 80131 Napoli, Italy
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Affiliation(s)
- Peng-Cheng Gao
- Department
of Chemistry of Medicinal Natural Products, and Key Laboratory of
Drug Targeting, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - San-Yong Zhu
- Department
of Chemistry of Medicinal Natural Products, and Key Laboratory of
Drug Targeting, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hui Cao
- Department
of Chemistry of Medicinal Natural Products, and Key Laboratory of
Drug Targeting, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jin-Song Yang
- Department
of Chemistry of Medicinal Natural Products, and Key Laboratory of
Drug Targeting, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
- State
Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
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Kojima H, Tohsato Y, Kabayama K, Itonori S, Ito M. Biochemical studies on sphingolipids of Artemia franciscana: complex neutral glycosphingolipids. Glycoconj J 2013; 30:257-68. [PMID: 22890904 DOI: 10.1007/s10719-012-9436-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/18/2012] [Accepted: 07/20/2012] [Indexed: 01/03/2023]
Abstract
Brine shrimp are primitive crustacean arthropodal model organisms, second to daphnia, which can survive in high-salinity environments. Their oviposited cysts, cuticle-covered diapausing eggs, are highly resistant to dryness. To elucidate specialties of brine shrimp, this study characterized glycosphingolipids, which are signal transduction-associated material. A group of novel and complex fucosyl glycosphingolipids were separated and identified from cysts of the brine shrimp Artemia franciscana by repeated lipid extraction, alkaline methanolysis, acid treatment, successive column chromatography, and post-source decay measurements by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Structures of the glycosphingolipids were elucidated by conventional structural characterization and mass spectrometry, and the compounds were identified as GlcNAcβ1-3GalNAcβ1-4(GlcNAcα1-2Fucα1-3)GlcNAcβ1-3Manβ1-4Glcβ1-Cer, GalNAcβ1-4(Fucα1-3)GlcNAcβ1-3GalNAcβ1-4(GlcNAcα1-2Fucα1-3)GlcNAcβ1-3Manβ1-4Glcβ1-Cer, and GalNAcβ1-4(GlcNAcα1-2Fucα1-3)GlcNAcβ1-3GalNAcβ1-4(GlcNAcα1-2Fucα1-3)GlcNAcβ1-3Manβ1-4Glcβ1-Cer. These compounds also contained a branching, non-arthro-series disaccharide with an α-GlcNAc terminus, similar to that found in a previously reported ceramide hexasaccharide (III3(GlcNAcα2Fucα)-At4Cer). The glycans within these complex GSLs are longer than reported glycans of the animal kingdom containing α-GlcNAc terminus. These complex GSLs as well as the longest GSL with ten sugar residues, ceramide decasaccharide (CDeS), contain the fucosylated LacdiNAc sequence reported to associate with parasitism/immunosuppression and the α-GlcNAc terminus reported to show a certain antibacterial effect in other reports. CDeS, the longest GSL of this species, was found in the highest amount, which indicates that CDeS may be functionally important.
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La Clair JJ, Rodríguez AD. Isolation of the β-galactosphingolipid coniferoside using a tumor cell proteome reverse affinity protocol. Bioorg Med Chem 2011; 19:6645-53. [DOI: 10.1016/j.bmc.2011.06.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2011] [Revised: 05/06/2011] [Accepted: 06/17/2011] [Indexed: 11/25/2022]
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Hogan AE, O'Reilly V, Dunne MR, Dere RT, Zeng SG, O'Brien C, Amu S, Fallon PG, Exley MA, O'Farrelly C, Zhu X, Doherty DG. Activation of human invariant natural killer T cells with a thioglycoside analogue of α-galactosylceramide. Clin Immunol 2011; 140:196-207. [PMID: 21493160 DOI: 10.1016/j.clim.2011.03.016] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 03/16/2011] [Accepted: 03/17/2011] [Indexed: 11/23/2022]
Abstract
Activation of CD1d-restricted invariant NKT (iNKT) cells with the glycolipid α-galactosylceramide (α-GalCer) confers protection against disease in murine models, however, clinical trials in humans have had limited impact. We synthesized a novel thioglycoside analogue of α-GalCer, denoted α-S-GalCer, and tested its efficacy for stimulating human iNKT cells in vitro. α-S-GalCer stimulated cytokine release by iNKT cells in a CD1d-dependent manner and primed CD1d(+) target cells for lysis. α-S-GalCer-stimulated iNKT cells induced maturation of monocyte-derived dendritic cells into antigen-presenting cells that released IL-12 and small amounts of IL-10. The nature and potency of α-S-GalCer and α-GalCer in human iNKT cell activation were similar. However, in contrast to α-GalCer, α-S-GalCer did not activate murine iNKT cells in vivo. Because of its enhanced stability in biological systems, α-S-GalCer may be superior to α-GalCer as a parent compound for developing adjuvant therapies for humans.
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Kojima H, Shimizu T, Sugita M, Itonori S, Fujita N, Ito M. Biochemical studies on sphingolipids of Artemia franciscana: novel neutral glycosphingolipids. J Lipid Res 2011; 52:308-17. [PMID: 21062954 PMCID: PMC3023551 DOI: 10.1194/jlr.m010173] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 10/15/2010] [Indexed: 12/27/2022] Open
Abstract
Neutral glycosphingolipids containing one to six sugars in their oligosaccharide chains have been isolated from cysts of the brine shrimp Artemia franciscana. The structures of these glycolipids were identified by methylation analysis, partial acid hydrolysis, gas-liquid chromatography, combined gas-liquid chromatography-mass spectrometry, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and proton nuclear magnetic resonance spectroscopy to be Glcβ1-Cer, Manβ1-4Glcβ1-Cer, Fucα1-3Manβ1-4Glcβ1-Cer, GlcNAcβ1-3Manβ1-4Glcβ1-Cer, GlcNAcα1-2Fucα1-3Manβ1-4Glcβ1-Cer, GalNAcβ1-4GlcNAcβ1-3Manβ1-4Glcβ1-Cer, GalNAcβ1-4(Fucα1-3)GlcNAcβ1-3Manβ1-4Glcβ1-Cer (CPS), and GalNAcβ1-4(GlcNAcα1-2Fucα1-3)GlcNAcβ1-3Manβ1-4Glcβ1-Cer (CHS). Two glycosphingolipids, CPS and CHS, were characterized as novel structures. Because Artemia contains a certain series of glycosphingolipids (-Fucα3Manβ4GlcβCer), which differ from the core sugar sequences reported thus far, we tentatively designated the glycosphingolipids characterized as nonarthro-series ones. Furthermore, CHS exhibited a hybrid structure of arthro-series and nonarthro-series sugar chain. Two novel glycosphingolipids were characterized from the brine shrimp Artemia franciscana; one was composed of arthrotetraose and a branching fucose attached to N-acetylglucosamine residue, and the other was composed of CPS with an additional N-acetylglucosamine residue attached to the branching fucose.
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Affiliation(s)
- Hisao Kojima
- Department of Bioinformatics, Faculty of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
- Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University, 2-5-1 Hiratsu, Otsu, Shiga 520-0862, Japan
| | - Takemasa Shimizu
- Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University, 2-5-1 Hiratsu, Otsu, Shiga 520-0862, Japan
| | - Mutsumi Sugita
- Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University, 2-5-1 Hiratsu, Otsu, Shiga 520-0862, Japan
| | - Saki Itonori
- Department of Chemistry, Faculty of Liberal Arts and Education, Shiga University, 2-5-1 Hiratsu, Otsu, Shiga 520-0862, Japan
| | - Norihisa Fujita
- Institute of Science and Engineering, and Laboratory of Pharmcoinformatics, Faculty of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Masahiro Ito
- Department of Bioinformatics, Faculty of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
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Szulc ZM, Bai A, Bielawski J, Mayroo N, Miller DE, Gracz H, Hannun YA, Bielawska A. Synthesis, NMR characterization and divergent biological actions of 2'-hydroxy-ceramide/dihydroceramide stereoisomers in MCF7 cells. Bioorg Med Chem 2010; 18:7565-79. [PMID: 20851613 PMCID: PMC2956829 DOI: 10.1016/j.bmc.2010.08.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Revised: 08/25/2010] [Accepted: 08/26/2010] [Indexed: 02/09/2023]
Abstract
A straightforward method for the simultaneous preparation of (2S,3R,2'R)- and (2S,3R,2'S)-2'-hydroxy-ceramides (2'-OHCer) from (2S,3R)-sphingosine acetonide precursors and racemic mixtures of 2-hydroxy fatty acids (2-OHFAs) is described. The obtained 2'-OH-C4-, -C6-, -C12-, -C16-Cer and 2'-OH-C6-dhCer pairs of diastereoisomers were characterized thoroughly by TLC, MS, NMR, and optical rotation. Dynamic and multidimensional NMR studies provided evidence that polar interfaces of 2'-OHCers are extended and more rigid than observed for the corresponding non-hydroxylated analogs. Stereospecific profile on growth suppression of MCF7 cells was observed for (2'R)- and (2'S)-2'-OH-C6-Cers and their dihydro analogs. The (2'R)-isomers were more active than the (2'S)-isomers (IC(50) ∼3 μM/8 μM and IC(50) ∼8 μM/12 μM, respectively), surpassing activity of the ordinary C6-Cer (IC(50) ∼12 μM) and C6-dhCer (IC(50) ∼38 μM). Neither isomer of 2'-OH-C6-Cers and 2'-OH-C6-dhCers was metabolized to their cellular long chain 2'-OH-homologs. Surprisingly, the most active (2'R)-isomers did not influence the levels of the cellular Cers nor dhCers. Contrary to this, the (2'S)-isomers generated cellular Cers and dhCers efficiently. In comparison, the ordinary C6-Cer and C6-dhCer also significantly increased the levels of their cellular long chain homologs. These peculiar anabolic responses and SAR data suggest that (2'R)-2'-OHCers/dhCers may interact with some distinct cellular regulatory targets in a specific and more effective manner than their non-hydroxylated analogs. Thus, stereoisomers of 2'-OHCers can be potentially utilized as novel molecular tools to study lipid-protein interactions, cell signaling phenomena and to understand the role of hydroxylated sphingolipids in cancer biology, pathogenesis and therapy.
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Affiliation(s)
- Zdzislaw M. Szulc
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
| | - Aiping Bai
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
| | - Jacek Bielawski
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
| | - Nalini Mayroo
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
| | - Doreen E. Miller
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
- Roche Carolina, Inc., Florence, SC 29506
| | - Hanna Gracz
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Yusuf A. Hannun
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
| | - Alicja Bielawska
- Lipidomics Shared Resource, Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425
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Murphy N, Zhu X, Schmidt RR. α-Galactosylceramides and analogues – important immunomodulators for use as vaccine adjuvants. Carbohydrate Chemistry 2010. [DOI: 10.1039/9781849730891-00064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Niamh Murphy
- UCD School of Chemistry and Chemical Biology, University College Dublin Belfield, Dublin 4 Ireland
| | - Xiangming Zhu
- UCD School of Chemistry and Chemical Biology, University College Dublin Belfield, Dublin 4 Ireland
| | - Richard R. Schmidt
- Fachbereich Chemie, Universität Konstanz Fach M 725 D-78457 Konstanz Germany
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Mayer AMS, Rodríguez AD, Berlinck RGS, Hamann MT. Marine pharmacology in 2005-6: Marine compounds with anthelmintic, antibacterial, anticoagulant, antifungal, anti-inflammatory, antimalarial, antiprotozoal, antituberculosis, and antiviral activities; affecting the cardiovascular, immune and nervous systems, and other miscellaneous mechanisms of action. Biochim Biophys Acta Gen Subj 2009; 1790:283-308. [PMID: 19303911 DOI: 10.1016/j.bbagen.2009.03.011] [Citation(s) in RCA: 135] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 03/09/2009] [Accepted: 03/12/2009] [Indexed: 01/03/2023]
Abstract
BACKGROUND The review presents the 2005-2006 peer-reviewed marine pharmacology literature, and follows a similar format to the authors' 1998-2004 reviews. The preclinical pharmacology of chemically characterized marine compounds isolated from marine animals, algae, fungi and bacteria is systematically presented. RESULTS Anthelmintic, antibacterial, anticoagulant, antifungal, antimalarial, antiprotozoal, antituberculosis and antiviral activities were reported for 78 marine chemicals. Additionally 47 marine compounds were reported to affect the cardiovascular, immune and nervous system as well as possess anti-inflammatory effects. Finally, 58 marine compounds were shown to bind to a variety of molecular targets, and thus could potentially contribute to several pharmacological classes. CONCLUSIONS Marine pharmacology research during 2005-2006 was truly global in nature, involving investigators from 32 countries, and the United States, and contributed 183 marine chemical leads to the research pipeline aimed at the discovery of novel therapeutic agents. GENERAL SIGNIFICANCE Continued preclinical and clinical research with marine natural products demonstrating a broad spectrum of pharmacological activity will probably result in novel therapeutic agents for the treatment of multiple disease categories.
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Affiliation(s)
- Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA.
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Costantino V, Fattorusso E, Imperatore C, Mangoni A, Teta R. Terpioside from the Marine SpongeTerpios sp., the First Glycosphingolipid Having anL-Fucofuranose Unit. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701220] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ding N, Li C, Liu Y, Zhang Z, Li Y. Concise synthesis of clarhamnoside, a novel glycosphingolipid isolated from the marine sponge Agela clathrodes. Carbohydr Res 2007; 342:2003-13. [PMID: 17559820 DOI: 10.1016/j.carres.2007.05.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2007] [Revised: 05/08/2007] [Accepted: 05/09/2007] [Indexed: 10/23/2022]
Abstract
The first total synthesis of a novel alpha-galactoglycosphingolipid clarhamnoside has been achieved through a straightforward strategy. A thiogalactosyl donor with a benzylidene group at C-4 and C-6 and nonparticipating p-methoxybenzyl group at C-2 was successfully employed in the stereocontrolled syntheses of alpha-GalGSLs. The N-Phth-protected trifluoroacetimidate donor for terminal disaccharide was successfully applied in constructing the [GalNAc beta-(1-->6)-Gal] glycosidic linkage.
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Affiliation(s)
- Ning Ding
- Key Laboratory of Marine Drugs, The Ministration of Education of China, School of Pharmacy, Ocean University of China, Qingdao 266003, China
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Abstract
This review covers the literature published in 2005 for marine natural products, with 704 citations (493 for the period January to December 2005) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (812 for 2005), together with their relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Ding N, Wang P, Zhang Z, Liu Y, Li Y. Synthesis of the tetrasaccharide residue of clarhamnoside, a novel glycosphingolipid isolated from the marine sponge Agelas clathrodes. Carbohydr Res 2006; 341:2769-76. [PMID: 17049498 DOI: 10.1016/j.carres.2006.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2006] [Revised: 09/19/2006] [Accepted: 09/25/2006] [Indexed: 02/03/2023]
Abstract
A tetrasaccharide, alpha-l-Rhap-(1-->3)-beta-d-GalpNAc-(1-->6)-alpha-d-Galp-(1-->2)-alpha-d-Galp, the carbohydrate moiety of clarhamnoside isolated from the marine sponge Agelas clathrodes, was synthesized as its propyl glycoside via a convergent approach. The key steps to the synthetic strategy were the stereoselective construction of the reducing-end disaccharide alpha-d-Galp-(1-->2)-d-Galp (5) and efficient coupling with the terminal disaccharide alpha-l-Rhap-(1-->3)-d-GalpNAc building block, in which the N-phthalimido-protected trifluoroacetimidate 13 was proved to be an effective donor.
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Affiliation(s)
- Ning Ding
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Pharmacy, Ocean University of China, Qingdao 266003, China
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