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Rivero P, Ivanova V, Barril X, Casampere M, Casas J, Fabriàs G, Díaz Y, Matheu MI. Targeting dihydroceramide desaturase 1 (Des1): Syntheses of ceramide analogues with a rigid scaffold, inhibitory assays, and AlphaFold2-assisted structural insights reveal cyclopropenone PR280 as a potent inhibitor. Bioorg Chem 2024; 145:107233. [PMID: 38422591 DOI: 10.1016/j.bioorg.2024.107233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/04/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
Dihydroceramide desaturase 1 (Des1) catalyzes the formation of a CC double bond in dihydroceramide to furnish ceramide. Inhibition of Des1 is related to cell cycle arrest and programmed cell death. The lack of the Des1 crystalline structure, as well as that of a close homologue, hampers the detailed understanding of its inhibition mechanism and difficults the design of new inhibitors, thus making Des1 a strategic target. Based on previous structure-activity studies, different ceramides containing rigid scaffolds were designed. The synthesis and evaluation of these compounds as Des1 inhibitors allowed the identification of PR280 as a better Des 1 inhibitor in vitro (IC50 = 700 nM) than GT11 and XM462, the current reference inhibitors. This cyclopropenone ceramide was obtained in a 6-step synthesis with a 24 % overall yield. The highly confident 3D structure of Des1, recently predicted by AlphaFold2, served as the basis for conducting docking studies of known Des1 inhibitors and the ceramide derivatives synthesized by us in this study. For this purpose, a complete holoprotein structure was previously constructed. This study has allowed a better knowledge of key ligand-enzyme interactions for Des1 inhibitory activity. Furthermore, it sheds some light on the inhibition mechanism of GT11.
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Affiliation(s)
- Pablo Rivero
- Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, C/Marcel.lí Domingo 1, Tarragona 43007, Spain
| | - Varbina Ivanova
- Universitat de Barcelona, Department of Physical Chemistry, Faculty of Pharmacy, Av. Joan XXIII s/n, Barcelona 08028, Spain
| | - Xavier Barril
- Universitat de Barcelona, Department of Physical Chemistry, Faculty of Pharmacy, Av. Joan XXIII s/n, Barcelona 08028, Spain
| | - Mireia Casampere
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Department of Biological Chemistry, C/Jordi Girona 18-26, Barcelona 08034, Spain
| | - Josefina Casas
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Department of Biological Chemistry, C/Jordi Girona 18-26, Barcelona 08034, Spain
| | - Gemma Fabriàs
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Department of Biological Chemistry, C/Jordi Girona 18-26, Barcelona 08034, Spain
| | - Yolanda Díaz
- Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, C/Marcel.lí Domingo 1, Tarragona 43007, Spain.
| | - M Isabel Matheu
- Universitat Rovira i Virgili, Departament de Química Analítica i Química Orgànica, Faculty of Chemistry, C/Marcel.lí Domingo 1, Tarragona 43007, Spain.
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Wørmer GJ, Hansen BK, Palmfeldt J, Poulsen TB. A Cyclopropene Electrophile that Targets Glutathione S‐Transferase Omega‐1 in Cells. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Gustav J. Wørmer
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Bente K. Hansen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Johan Palmfeldt
- Department of Clinical Medicine—Research Unit for Molecular Medicine Aarhus University hospital Palle Juul-Jensens Boulevard 82 8200 Aarhus N Denmark
| | - Thomas B. Poulsen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
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Wørmer GJ, Hansen BK, Palmfeldt J, Poulsen TB. A Cyclopropene Electrophile that Targets Glutathione S‐Transferase Omega‐1 in Cells. Angew Chem Int Ed Engl 2019; 58:11918-11922. [DOI: 10.1002/anie.201907520] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Gustav J. Wørmer
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Bente K. Hansen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
| | - Johan Palmfeldt
- Department of Clinical Medicine—Research Unit for Molecular Medicine Aarhus University hospital Palle Juul-Jensens Boulevard 82 8200 Aarhus N Denmark
| | - Thomas B. Poulsen
- Department of Chemistry Aarhus University Langelandsgade 140 8000 Aarhus C Denmark
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Polley KR, Oswell NJ, Pegg RB, Paton CM, Cooper JA. A 5-day high-fat diet rich in cottonseed oil improves cholesterol profiles and triglycerides compared to olive oil in healthy men. Nutr Res 2018; 60:43-53. [DOI: 10.1016/j.nutres.2018.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/16/2018] [Accepted: 09/04/2018] [Indexed: 10/28/2022]
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Villela CCEJ, Cox RB, Shurson GC, Compart KM, Urriola PE, Johnston LJ. Effects of adding minimally refined cottonseed oil or crude glycerol to diets containing 40% corn distiller's dried grains with solubles on growth performance, carcass characteristics, and pork fat firmness of growing-finishing pigs. J Anim Sci 2017; 95:3057-3067. [PMID: 28727094 DOI: 10.2527/jas.2017.1383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Diets containing more than 20% distiller's dried grains with solubles (DDGS) reduce fat firmness in pork, but supplementation of cottonseed oil or crude glycerol may improve fat firmness. The objective of this study was to assess the effect of feeding minimally refined cottonseed oil or crude glycerol on growth performance, carcass composition, and fat quality of growing-finishing pigs. Mixed sex pigs ( = 216; 24 ± 4 kg initial BW) were blocked by BW and allotted to 1 of 3 dietary treatments: 1) a basal corn-soybean meal diet with 40% DDGS (CON), 2) CON diet plus 5% minimally refined cottonseed oil added throughout the experiment (COT), or 3) CON fed during the first 8 wk and CON + 8% crude glycerol fed during the last 6 wk of the experiment (GLY). Although diets were not isocaloric, total AA-to-ME ratios were calculated to be equal among diets. Carcass composition was estimated using real-time ultrasound 2 d before harvest. Gilts (16/treatment) closest to the mean BW of each pen were harvested (115 ± 8 kg BW), and bellies were retrieved for in-depth analysis of fat quality. Belly fat was sampled and analyzed for fatty acid composition. Overall, ADFI of pigs fed COT (2.30 kg/d) was less ( < 0.01) than that of pigs fed CON or GLY (2.47 and 2.49 kg/d, respectively). Pigs fed COT (0.93 kg/d) had greater ( < 0.01) ADG compared with pigs fed CON or GLY (0.88 and 0.87 kg/d, respectively). Greater ( < 0.01) G:F was observed for pigs fed COT (0.41) than for pigs fed CON or GLY diets (0.36 and 0.35, respectively). Final BW of pigs fed COT (124.3 kg) was greater ( < 0.01) than that of pigs fed CON or GLY (118.9 and 118.6 kg, respectively). Pigs fed COT had greater ( < 0.01) HCW (94.9 kg) compared with pigs fed CON or GLY (89.9 and 89.2 kg, respectively). No differences were observed for dressing percentage (75.7, 76.3, and 75.3%), fat-free carcass lean percentage (50.5, 49.7, and 50.0%), and belly flop angle (6.21, 8.57, and 6.06°) for CON, COT, and GLY, respectively. Pigs assigned to COT had higher ( < 0.01) melting point of belly fat compared with pigs assigned to CON or GLY (30.4 vs. 26.3 and 25.3°C, respectively). Pigs fed COT had increased ( < 0.05) SFA, PUFA, and iodine value (IV) compared with CON-fed pigs. Glycerol supplementation had no influence on SFA, MUFA, and PUFA concentrations or IV of belly, jowl, and back fat compared with CON. In conclusion, COT diets improved growth performance due to greater energy density, but carcass composition was not affected by treatments. In this experiment, feeding neither COT nor GLY improved fat firmness of pigs fed diets containing 40% DDGS.
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Obert JC, Hughes D, Sorenson WR, McCann M, Ridley WP. A quantitative method for the determination of cyclopropenoid fatty acids in cottonseed, cottonseed meal, and cottonseed oil (Gossypium hirsutum) by high-performance liquid chromatography. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:2062-7. [PMID: 17323967 DOI: 10.1021/jf0617871] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Cyclopropenoid fatty acids (CPFAs), found in cottonseed, have been shown to have detrimental health effects to susceptible livestock. Previous quantitative analytical methods for the determination of CPFAs expressed these acids in terms of their relative abundance with respect to other fatty acids in the oil, necessitating the concurrent analysis of other fatty acids. The proposed analytical method describes the quantitation of three relevant CPFAs for cotton (malvalic acid, sterculic acid, and dihydrosterculic acid) in cottonseed in micrograms per gram fresh weight of sample. The method involves extraction of the oil, saponification, and derivatization of the free fatty acids with 2-bromoacetophenone to give the phenacyl esters. These esters are then separated by dual-column reverse-phase high-performance liquid chromatography and quantitated via external standards. This is the first method to include external calibration standards for CPFAs and, as such, is capable of direct quantification with no further data conversion required. CPFA data generated from the analysis of cottonseed, cottonseed meal, and cottonseed oil produced in the United States in 2002 are presented.
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Affiliation(s)
- Janet C Obert
- Monsanto Company, 800 North Lindbergh Boulevard, St. Louis, Missouri 63167, USA
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A new example of the three-component reaction: nucleophilic ring opening in cyclopropenones by cyanide ions in the presence of water or alcohols. Russ Chem Bull 2005. [DOI: 10.1007/s11172-006-0087-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rodríguez S, Camps F, Fabriàs G. Inhibition of the acyl-CoA desaturases involved in the biosynthesis of Spodoptera littoralis sex pheromone by analogs of 10,11-methylene-10-tetradecenoic acid. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2004; 34:283-289. [PMID: 14871624 DOI: 10.1016/j.ibmb.2003.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2003] [Revised: 11/06/2003] [Accepted: 11/06/2003] [Indexed: 05/24/2023]
Abstract
The desaturase inhibitory activity of the cyclopropenyl alcohols 9,10-methylene-9-tetradecen-1-ol (9-MTOL), 10,11-methylene-10-tetradecen-1-ol (10-MTOL) and 11,12-methylene-11-tetradecen-1-ol (11-MTOL), which are structural analogs of 10,11-methylene-10-tetradecenoic acid (10-MTA), is reported. At equimolar ratios with respect to the different substrates, the three compounds completely inhibited the three desaturation reactions involved in the biosynthesis of Spodoptera littoralis sex pheromone. The dose-dependence of inhibition was determined for 10-MTA and its alcohol derivative. Both compounds inhibited the transformation of perdeuterated palmitic acid into perdeuterated (Z)-11-hexadecenoic acid and that of (E)-11-tridecenoic acid into (Z,E)-9,11-tridecadienoic acid with similar IC(50) values. The overall results presented in this work support scattered data that neither the free carboxyl groups nor their acyl-CoA esters are a requisite for inhibition of desaturases. Since the synthesis of cyclopropenols is much more convenient than that of cyclopropene fatty acids, this finding is of economical relevance regarding the putative use of cyclopropene derivatives in pest control.
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Affiliation(s)
- Sergio Rodríguez
- Departamento de Química Orgánica Biológica, Instituto de Investigaciones Químicas y Ambientales de Barcelona, CSIC, Jordi Girona 18, 08034 Barcelona, Spain
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Phetsuksiri B, Jackson M, Scherman H, McNeil M, Besra GS, Baulard AR, Slayden RA, DeBarber AE, Barry CE, Baird MS, Crick DC, Brennan PJ. Unique mechanism of action of the thiourea drug isoxyl on Mycobacterium tuberculosis. J Biol Chem 2003; 278:53123-30. [PMID: 14559907 PMCID: PMC4747054 DOI: 10.1074/jbc.m311209200] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The thiourea isoxyl (thiocarlide; 4,4'-diisoamyloxydiphenylthiourea) is known to be an effective anti-tuberculosis drug, active against a range of multidrug-resistant strains of Mycobacterium tuberculosis and has been used clinically. Little was known of its mode of action. We now demonstrate that isoxyl results in a dose-dependent decrease in the synthesis of oleic and, consequently, tuberculostearic acid in M. tuberculosis with complete inhibition at 3 microg/ml. Synthesis of mycolic acid was also affected. The anti-bacterial effect of isoxyl was partially reversed by supplementing growth medium with oleic acid. The specificity of this inhibition pointed to a Delta9-stearoyl desaturase as the drug target. Development of a cell-free assay for Delta9-desaturase activity allowed direct demonstration of the inhibition of oleic acid synthesis by isoxyl. Interestingly, sterculic acid, a known inhibitor of Delta9-desaturases, emulated the effect of isoxyl on oleic acid synthesis but did not affect mycolic acid synthesis, demonstrating the lack of a relationship between the two effects of the drug. The three putative fatty acid desaturases in the M. tuberculosis genome, desA1, desA2, and desA3, were cloned and expressed in Mycobacterium bovis BCG. Cell-free assays and whole cell labeling demonstrated increased Delta9-desaturase activity and oleic acid synthesis only in the desA3-overexpressing strain and an increase in the minimal inhibitory concentration for isoxyl, indicating that DesA3 is the target of the drug. These results validate membrane-bound Delta9-desaturase, DesA3, as a new therapeutic target, and the thioureas as anti-tuberculosis drugs worthy of further development.
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Affiliation(s)
- Benjawan Phetsuksiri
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Mary Jackson
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Hataichanok Scherman
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Michael McNeil
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Gurdyal S. Besra
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Alain R. Baulard
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | | | | | | | - Mark S. Baird
- Department of Chemistry, University of Wales, Bangor, LL57 2UW Wales
| | - Dean C. Crick
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
| | - Patrick J. Brennan
- Department of Microbiology, Pathology, and Immunology, Colorado State University, Fort Collins, Colorado 80523-1682
- To whom correspondence should be addressed. Tel.: 970-491-6700; Fax: 970-491-1815;
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Affiliation(s)
- Susanne Brodesser
- Kekulé‐Institut für Organische Chemie und Biochemie der Universität, Gerhard‐Domagk‐Str. 1, 53121 Bonn, Germany, Fax: (internat.) + 49‐(0)228/737‐778
| | - Peter Sawatzki
- Kekulé‐Institut für Organische Chemie und Biochemie der Universität, Gerhard‐Domagk‐Str. 1, 53121 Bonn, Germany, Fax: (internat.) + 49‐(0)228/737‐778
| | - Thomas Kolter
- Kekulé‐Institut für Organische Chemie und Biochemie der Universität, Gerhard‐Domagk‐Str. 1, 53121 Bonn, Germany, Fax: (internat.) + 49‐(0)228/737‐778
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Triola G, Fabriàs G, Llebaria A. Synthesis of a Cyclopropene Analogue of Ceramide, a Potent Inhibitor of Dihydroceramide Desaturase. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3773(20010518)40:10<1960::aid-anie1960>3.0.co;2-v] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Triola G, Fabriàs G, Llebaria A. Synthesis of a Cyclopropene Analogue of Ceramide, a Potent Inhibitor of Dihydroceramide Desaturase. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010518)113:10<2014::aid-ange2014>3.0.co;2-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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