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Mácha H, Zápal J, Kuzma M, Luptáková D, Lemr K, Havlíček V. Exploring the Effects of Cyclosporin A to Isocyclosporin A Rearrangement on Ion Mobility Separation. Anal Chem 2024; 96:4163-4170. [PMID: 38430121 PMCID: PMC10938282 DOI: 10.1021/acs.analchem.3c05165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/05/2024] [Accepted: 02/15/2024] [Indexed: 03/03/2024]
Abstract
Cyclosporin A (CycA) is a peptide secondary metabolite derived from fungi that plays a crucial role in transplantation surgery. Cyclic traveling wave ion mobility mass spectrometry (IM-MS) revealed an N → O peptidyl shift in singly protonated CycA to isocyclosporin A (isoA), whereas no such isomerization was observed for doubly protonated and sodiated molecules. CycA and isoA were able to be separated by considering doubly protonated precursors using a specific ion fragment. In parallel, sodium ion stabilization facilitated the simultaneous separation and quantitation of singly charged cyclosporin isomers with the limit of detection and coefficient of determination of 1.3% and 0.9908 for CycA in isoA and 1.0% and 0.9830 for isoA in CycA, respectively. Finally, 1H-13C gHSQC NMR experiments permitted parallel recording of up to 11 cyclosporin conformers. The ratios were determined by integrating the volume of cross-peaks of the upfield resonating hydrogen in the diastereotopic methylene group of sarcosine-3.
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Affiliation(s)
- Hynek Mácha
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
- Department
of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 771 46, Czech Republic
| | - Jakub Zápal
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
| | - Marek Kuzma
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
- Department
of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 771 46, Czech Republic
| | - Dominika Luptáková
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
| | - Karel Lemr
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
- Department
of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 771 46, Czech Republic
| | - Vladimír Havlíček
- Institute
of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 142 00, Czech Republic
- Department
of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 771 46, Czech Republic
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Mengr A, Strnadová V, Strnad Š, Vrkoslav V, Pelantová H, Kuzma M, Comptdaer T, Železná B, Kuneš J, Galas MC, Pačesová A, Maletínská L. Feeding High-Fat Diet Accelerates Development of Peripheral and Central Insulin Resistance and Inflammation and Worsens AD-like Pathology in APP/PS1 Mice. Nutrients 2023; 15:3690. [PMID: 37686722 PMCID: PMC10490051 DOI: 10.3390/nu15173690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/13/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 09/10/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive brain disorder characterized by extracellular amyloid-β (Aβ) plaques, intracellular neurofibrillary tangles formed by hyperphosphorylated Tau protein and neuroinflammation. Previous research has shown that obesity and type 2 diabetes mellitus, underlined by insulin resistance (IR), are risk factors for neurodegenerative disorders. In this study, obesity-induced peripheral and central IR and inflammation were studied in relation to AD-like pathology in the brains and periphery of APP/PS1 mice, a model of Aβ pathology, fed a high-fat diet (HFD). APP/PS1 mice and their wild-type controls fed either a standard diet or HFD were characterized at the ages of 3, 6 and 10 months by metabolic parameters related to obesity via mass spectroscopy, nuclear magnetic resonance, immunoblotting and immunohistochemistry to quantify how obesity affected AD pathology. The HFD induced substantial peripheral IR leading to central IR. APP/PS1-fed HFD mice had more pronounced IR, glucose intolerance and liver steatosis than their WT controls. The HFD worsened Aβ pathology in the hippocampi of APP/PS1 mice and significantly supported both peripheral and central inflammation. This study reveals a deleterious effect of obesity-related mild peripheral inflammation and prediabetes on the development of Aβ and Tau pathology and neuroinflammation in APP/PS1 mice.
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Affiliation(s)
- Anna Mengr
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Veronika Strnadová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Štěpán Strnad
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Vladimír Vrkoslav
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, 142 20 Prague, Czech Republic; (H.P.); (M.K.)
| | - Marek Kuzma
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, 142 20 Prague, Czech Republic; (H.P.); (M.K.)
| | - Thomas Comptdaer
- University of Lille, Inserm, CHU Lille, CNRS, LilNCog-Lille Neuroscience & Cognition, F-59000 Lille, France; (T.C.); (M.-C.G.)
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
- Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4, 142 20 Prague, Czech Republic
| | - Marie-Christine Galas
- University of Lille, Inserm, CHU Lille, CNRS, LilNCog-Lille Neuroscience & Cognition, F-59000 Lille, France; (T.C.); (M.-C.G.)
| | - Andrea Pačesová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, Prague 6, 166 10 Prague, Czech Republic; (A.M.); (V.S.); (Š.S.); (V.V.); (B.Ž.); (J.K.)
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Ďásková N, Modos I, Krbcová M, Kuzma M, Pelantová H, Hradecký J, Heczková M, Bratová M, Videňská P, Šplíchalová P, Králová M, Heniková M, Potočková J, Ouřadová A, Landberg R, Kühn T, Cahová M, Gojda J. Multi-omics signatures in new-onset diabetes predict metabolic response to dietary inulin: findings from an observational study followed by an interventional trial. Nutr Diabetes 2023; 13:7. [PMID: 37085526 PMCID: PMC10121613 DOI: 10.1038/s41387-023-00235-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 03/22/2023] [Accepted: 04/06/2023] [Indexed: 04/23/2023] Open
Abstract
AIM The metabolic performance of the gut microbiota contributes to the onset of type 2 diabetes. However, targeted dietary interventions are limited by the highly variable inter-individual response. We hypothesized (1) that the composition of the complex gut microbiome and metabolome (MIME) differ across metabolic spectra (lean-obese-diabetes); (2) that specific MIME patterns could explain the differential responses to dietary inulin; and (3) that the response can be predicted based on baseline MIME signature and clinical characteristics. METHOD Forty-nine patients with newly diagnosed pre/diabetes (DM), 66 metabolically healthy overweight/obese (OB), and 32 healthy lean (LH) volunteers were compared in a cross-sectional case-control study integrating clinical variables, dietary intake, gut microbiome, and fecal/serum metabolomes (16 S rRNA sequencing, metabolomics profiling). Subsequently, 27 DM were recruited for a predictive study: 3 months of dietary inulin (10 g/day) intervention. RESULTS MIME composition was different between groups. While the DM and LH groups represented opposite poles of the abundance spectrum, OB was closer to DM. Inulin supplementation was associated with an overall improvement in glycemic indices, though the response was very variable, with a shift in microbiome composition toward a more favorable profile and increased serum butyric and propionic acid concentrations. The improved glycemic outcomes of inulin treatment were dependent on better baseline glycemic status and variables related to the gut microbiota, including the abundance of certain bacterial taxa (i.e., Blautia, Eubacterium halii group, Lachnoclostridium, Ruminiclostridium, Dialister, or Phascolarctobacterium), serum concentrations of branched-chain amino acid derivatives and asparagine, and fecal concentrations of indole and several other volatile organic compounds. CONCLUSION We demonstrated that obesity is a stronger determinant of different MIME patterns than impaired glucose metabolism. The large inter-individual variability in the metabolic effects of dietary inulin was explained by differences in baseline glycemic status and MIME signatures. These could be further validated to personalize nutritional interventions in patients with newly diagnosed diabetes.
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Affiliation(s)
- N Ďásková
- First Faculty of Medicine, Charles University, Prague, Czech Republic
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - I Modos
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - M Krbcová
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - M Kuzma
- Institute of Microbiology of the CAS, Prague, Czech Republic
| | - H Pelantová
- Institute of Microbiology of the CAS, Prague, Czech Republic
| | - J Hradecký
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - M Heczková
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - M Bratová
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - P Videňská
- Mendel University, Department of Chemistry and Biochemistry, Brno, Czech Republic
| | - P Šplíchalová
- RECETOX, Faculty of Science Masaryk University, Brno, Czech Republic
| | - M Králová
- Ambis University, Department of Economics and Management, Prague, Czech Republic
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - M Heniková
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - J Potočková
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - A Ouřadová
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - R Landberg
- Division of Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Goteborg, Sweden
| | - T Kühn
- Institute of Global Food Security, Queen's University Belfast, Belfast, UK
- Heidelberg Institute of Global Health (HIGH), Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - M Cahová
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
| | - J Gojda
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czech Republic
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Štefanová I, Bittnerová P, Zápal J, Kuzma M, Kubec R. Organosulfur Compounds of Allium Subgenus Nectaroscordum Species. J Agric Food Chem 2023; 71:5712-5720. [PMID: 37010146 DOI: 10.1021/acs.jafc.3c00317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Organosulfur compounds formed upon comminuting the bulbs of two Allium subgenus Nectaroscordum species (Allium siculum and Allium tripedale) were analyzed by HPLC-PDA-MS/MS. The major organosulfur components were isolated and structurally characterized (MS, NMR), including several previously unknown compounds. It was found that the organosulfur chemistry occurring when these plants are cut is very similar to that observed in onion (Allium cepa). In all cases, however, the organosulfur compounds found in Nectaroscordum species were higher homologues of those observed in onion, being formed by various combinations of C1 and C4 building blocks derived from methiin and homoisoalliin/butiin, respectively. Thiosulfinates, bis-sulfine, cepaenes, and several cepaene-like compounds were identified among the major organosulfur components present in the homogenized bulbs. Several groups of 3,4-diethylthiolane-based compounds, structurally homologous with onionin A, cepathiolane A, allithiolanes A-H, and cepadithiolactone A, found in onion, were also detected.
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Affiliation(s)
- Iveta Štefanová
- Department of Applied Chemistry, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Petra Bittnerová
- Department of Applied Chemistry, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Jakub Zápal
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Roman Kubec
- Department of Applied Chemistry, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic
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Pelantová H, Tomášová P, Šedivá B, Neprašová B, Mráziková L, Kuneš J, Železná B, Maletínská L, Kuzma M. Metabolomic Study of Aging in fa/ fa Rats: Multiplatform Urine and Serum Analysis. Metabolites 2023; 13:metabo13040552. [PMID: 37110210 PMCID: PMC10142631 DOI: 10.3390/metabo13040552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/27/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Zucker fatty (fa/fa) rats represent a well-established and widely used model of genetic obesity. Because previous metabolomic studies have only been published for young fa/fa rats up to 20 weeks of age, which can be considered early maturity in male fa/fa rats, the aim of our work was to extend the metabolomic characterization to significantly older animals. Therefore, the urinary profiles of obese fa/fa rats and their lean controls were monitored using untargeted NMR metabolomics between 12 and 40 weeks of age. At the end of the experiment, the rats were also characterized by NMR and LC-MS serum analysis, which was supplemented by a targeted LC-MS analysis of serum bile acids and neurotransmitters. The urine analysis showed that most of the characteristic differences detected in young obese fa/fa rats persisted throughout the experiment, primarily through a decrease in microbial co-metabolite levels, the upregulation of the citrate cycle, and changes in nicotinamide metabolism compared with the age-related controls. The serum of 40-week-old obese rats showed a reduction in several bile acid conjugates and an increase in serotonin. Our study demonstrated that the fa/fa model of genetic obesity is stable up to 40 weeks of age and is therefore suitable for long-term experiments.
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Affiliation(s)
- Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
- First Faculty of Medicine, Charles University and General University Hospital in Prague, 128 08 Prague, Czech Republic
| | - Blanka Šedivá
- Faculty of Applied Sciences, University of West Bohemia, 306 14 Pilsen, Czech Republic
| | - Barbora Neprašová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic
| | - Lucia Mráziková
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic
- Institute of Physiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 160 00 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
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Mønsted MØ, Bilgin M, Kuzma M, Pelantová H, Pedersen K, Tomášová P, Nazmutdinova A, Šedivá B, Funda D, Castro-Mejía JL, Holm LJ, Nielsen DS, Haupt-Jorgensen M. Reduced phosphatidylcholine level in the intestinal mucus layer of prediabetic NOD mice. APMIS 2023; 131:237-248. [PMID: 36811202 DOI: 10.1111/apm.13302] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023]
Abstract
Type 1 diabetes (T1D) is an autoimmune disease with rising incidence. Pre- and manifest T1D is associated with intestinal barrier dysfunction, skewed microbiota composition, and serum dyslipidemia. The intestinal mucus layer protects against pathogens and its structure and phosphatidylcholine (PC) lipid composition may be compromised in T1D, potentially contributing to barrier dysfunction. This study compared prediabetic Non-Obese Diabetic (NOD) mice to healthy C57BL/6 mice by analyzing the intestinal mucus PC profile by shotgun lipidomics, plasma metabolomics by mass spectrometry and nuclear magnetic resonance, intestinal mucus production by histology, and cecal microbiota composition by 16 S rRNA sequencing. Jejunal mucus PC class levels were decreased in early prediabetic NOD vs C57BL/6 mice. In colonic mucus of NOD mice, the level of several PC species was reduced throughout prediabetes. In plasma, similar reductions of PC species were observed in early prediabetic NOD mice, where also increased beta-oxidation was prominent. No histological alterations were found in jejunal nor colonic mucus between the mouse strains. However, the β-diversity of the cecal microbiota composition differed between prediabetic NOD and C57BL/6 mice, and the bacterial species driving this difference were related to decreased short-chain fatty acid (SCFA)-production in the NOD mice. This study reports reduced levels of PCs in the intestinal mucus layer and plasma of prediabetic NOD mice as well as reduced proportions of SCFA-producing bacteria in cecal content at early prediabetes, possibly contributing to intestinal barrier dysfunction and T1D.
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Affiliation(s)
- Mia Øgaard Mønsted
- Department of Pathology, Rigshospitalet, The Bartholin Institute, Copenhagen, Denmark
| | - Mesut Bilgin
- Lipidomics Core Facility, Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, Prague, The Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Prague, The Czech Republic
| | - Kristina Pedersen
- Department of Pathology, Rigshospitalet, The Bartholin Institute, Copenhagen, Denmark
| | - Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, Prague, The Czech Republic
| | | | - Blanka Šedivá
- Faculty of Applied Sciences, University of West Bohemia, Plzeň, The Czech Republic
| | - David Funda
- Institute of Microbiology, Czech Academy of Sciences, Prague, The Czech Republic
| | | | - Laurits Juulskov Holm
- Department of Pathology, Rigshospitalet, The Bartholin Institute, Copenhagen, Denmark
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Daskova N, Heczkova M, Modos I, Hradecky J, Hudcovic T, Kuzma M, Pelantova H, Buskova I, Sticova E, Funda D, Golias J, Drabonova B, Jarkovska J, Kralova M, Cibulkova I, Gojda J, Cahova M. Protective Effect of Vegan Microbiota on Liver Steatosis Is Conveyed by Dietary Fiber: Implications for Fecal Microbiota Transfer Therapy. Nutrients 2023; 15:nu15020454. [PMID: 36678325 PMCID: PMC9867259 DOI: 10.3390/nu15020454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Fecal microbiota transfer may serve as a therapeutic tool for treating obesity and related disorders but currently, there is no consensus regarding the optimal donor characteristics. We studied how microbiota from vegan donors, who exhibit a low incidence of non-communicable diseases, impact on metabolic effects of an obesogenic diet and the potential role of dietary inulin in mediating these effects. Ex-germ-free animals were colonized with human vegan microbiota and fed a standard or Western-type diet (WD) with or without inulin supplementation. Despite the colonization with vegan microbiota, WD induced excessive weight gain, impaired glucose metabolism, insulin resistance, and liver steatosis. However, supplementation with inulin reversed steatosis and improved glucose homeostasis. In contrast, inulin did not affect WD-induced metabolic changes in non-humanized conventional mice. In vegan microbiota-colonized mice, inulin supplementation resulted in a significant change in gut microbiota composition and its metabolic performance, inducing the shift from proteolytic towards saccharolytic fermentation (decrease of sulfur-containing compounds, increase of SCFA). We found that (i) vegan microbiota alone does not protect against adverse effects of WD; and (ii) supplementation with inulin reversed steatosis and normalized glucose metabolism. This phenomenon is associated with the shift in microbiota composition and accentuation of saccharolytic fermentation at the expense of proteolytic fermentation.
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Affiliation(s)
- Nikola Daskova
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
- First Faculty of Medicine, Charles University, Katerinska 1660/32, 12108 Prague, Czech Republic
| | - Marie Heczkova
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
| | - Istvan Modos
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
| | - Jaromir Hradecky
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, 16500 Prague, Czech Republic
| | - Tomas Hudcovic
- Institute of Microbiology of the CAS, 14220 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the CAS, 14220 Prague, Czech Republic
| | - Helena Pelantova
- Institute of Microbiology of the CAS, 14220 Prague, Czech Republic
| | - Irena Buskova
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
| | - Eva Sticova
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
| | - David Funda
- Institute of Microbiology of the CAS, 14220 Prague, Czech Republic
| | - Jaroslav Golias
- Institute of Microbiology of the CAS, 14220 Prague, Czech Republic
| | - Barbora Drabonova
- Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences, 16500 Prague, Czech Republic
| | | | - Maria Kralova
- Department of Applied Mathematics and Computer Science, Masaryk University, 60177 Brno, Czech Republic
| | - Ivana Cibulkova
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, 10000 Prague, Czech Republic
| | - Jan Gojda
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, 10000 Prague, Czech Republic
| | - Monika Cahova
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic
- Correspondence:
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Pačesová A, Holubová M, Hrubá L, Strnadová V, Neprašová B, Pelantová H, Kuzma M, Železná B, Kuneš J, Maletínská L. Age-related metabolic and neurodegenerative changes in SAMP8 mice. Aging (Albany NY) 2022; 14:7300-7327. [PMID: 36126192 PMCID: PMC9550245 DOI: 10.18632/aging.204284] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 08/31/2022] [Indexed: 11/25/2022]
Abstract
The most important risk factor for the development of sporadic Alzheimer’s disease (AD) is ageing. Senescence accelerated mouse prone 8 (SAMP8) is a model of sporadic AD, with senescence accelerated resistant mouse (SAMR1) as a control. In this study, we aimed to determine the onset of senescence-induced neurodegeneration and the related potential therapeutic window using behavioral experiments, immunohistochemistry and western blotting in SAMP8 and SAMR1 mice at 3, 6 and 9 months of age. The Y-maze revealed significantly impaired working spatial memory of SAMP8 mice from the 6th month. With ageing, increasing plasma concentrations of proinflammatory cytokines in SAMP8 mice were detected as well as significantly increased astrocytosis in the cortex and microgliosis in the brainstem. Moreover, from the 3rd month, SAMP8 mice displayed a decreased number of neurons and neurogenesis in the hippocampus. From the 6th month, increased pathological phosphorylation of tau protein at Thr231 and Ser214 was observed in the hippocampi of SAMP8 mice. In conclusion, changes specific for neurodegenerative processes were observed between the 3rd and 6th month of age in SAMP8 mice; thus, potential neuroprotective interventions could be applied between these ages.
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Affiliation(s)
- Andrea Pačesová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Martina Holubová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Lucie Hrubá
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Veronika Strnadová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Barbora Neprašová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
- Institute of Physiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
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Qian P, Gardiner AT, Šímová I, Naydenova K, Croll TI, Jackson PJ, Nupur, Kloz M, Čubáková P, Kuzma M, Zeng Y, Castro-Hartmann P, van Knippenberg B, Goldie KN, Kaftan D, Hrouzek P, Hájek J, Agirre J, Siebert CA, Bína D, Sader K, Stahlberg H, Sobotka R, Russo CJ, Polívka T, Hunter CN, Koblížek M. 2.4-Å structure of the double-ring Gemmatimonas phototrophica photosystem. Sci Adv 2022; 8:eabk3139. [PMID: 35171663 PMCID: PMC8849296 DOI: 10.1126/sciadv.abk3139] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 12/22/2021] [Indexed: 07/21/2023]
Abstract
Phototrophic Gemmatimonadetes evolved the ability to use solar energy following horizontal transfer of photosynthesis-related genes from an ancient phototrophic proteobacterium. The electron cryo-microscopy structure of the Gemmatimonas phototrophica photosystem at 2.4 Å reveals a unique, double-ring complex. Two unique membrane-extrinsic polypeptides, RC-S and RC-U, hold the central type 2 reaction center (RC) within an inner 16-subunit light-harvesting 1 (LH1) ring, which is encircled by an outer 24-subunit antenna ring (LHh) that adds light-gathering capacity. Femtosecond kinetics reveal the flow of energy within the RC-dLH complex, from the outer LHh ring to LH1 and then to the RC. This structural and functional study shows that G. phototrophica has independently evolved its own compact, robust, and highly effective architecture for harvesting and trapping solar energy.
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Affiliation(s)
- Pu Qian
- Materials and Structural Analysis, Thermo Fisher Scientific, Achtseweg Noord 5, 5651 GG Eindhoven, Netherlands
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Alastair T. Gardiner
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
| | - Ivana Šímová
- Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czechia
| | - Katerina Naydenova
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Tristan I. Croll
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK
| | - Philip J. Jackson
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Nupur
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
| | - Miroslav Kloz
- ELI Beamlines, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czechia
| | - Petra Čubáková
- ELI Beamlines, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czechia
| | - Marek Kuzma
- Lab of Molecular Structure, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia
| | - Yonghui Zeng
- Department of Plant and Environmental Sciences, University of Copenhagen, Nørregade 10, DK-1165 Copenhagen, Denmark
| | - Pablo Castro-Hartmann
- Materials and Structural Analysis, Thermo Fisher Scientific, Achtseweg Noord 5, 5651 GG Eindhoven, Netherlands
| | - Bart van Knippenberg
- Materials and Structural Analysis, Thermo Fisher Scientific, Achtseweg Noord 5, 5651 GG Eindhoven, Netherlands
| | - Kenneth N. Goldie
- BioEM lab, Biozentrum, University of Basel, Mattenstrasse 26, 4058 Basel, Switzerland
| | - David Kaftan
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
| | - Pavel Hrouzek
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
| | - Jan Hájek
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
| | - Jon Agirre
- Department of Chemistry, University of York, York YO10 5DD, UK
| | | | - David Bína
- Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czechia
| | - Kasim Sader
- Materials and Structural Analysis, Thermo Fisher Scientific, Achtseweg Noord 5, 5651 GG Eindhoven, Netherlands
| | - Henning Stahlberg
- Laboratory of Biological Electron Microscopy, Institute of Physics, SB, EPFL, and Faculty of Biology and Medicine, Uni Lausanne, CH-1015 Lausanne, Switzerland
| | - Roman Sobotka
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
- Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czechia
| | - Christopher J. Russo
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Tomáš Polívka
- Faculty of Science, University of South Bohemia, 37005 České Budějovice, Czechia
| | - C. Neil Hunter
- School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Michal Koblížek
- Center Algatech, Institute of Microbiology, Czech Academy of Sciences, 37981 Třeboň, Czechia
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10
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Prochazkova M, Budinska E, Kuzma M, Pelantova H, Hradecky J, Heczkova M, Daskova N, Bratova M, Modos I, Videnska P, Splichalova P, Sowah SA, Kralova M, Henikova M, Selinger E, Klima K, Chalupsky K, Sedlacek R, Landberg R, Kühn T, Gojda J, Cahova M. Vegan Diet Is Associated With Favorable Effects on the Metabolic Performance of Intestinal Microbiota: A Cross-Sectional Multi-Omics Study. Front Nutr 2022; 8:783302. [PMID: 35071294 PMCID: PMC8777108 DOI: 10.3389/fnut.2021.783302] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/25/2021] [Indexed: 12/14/2022] Open
Abstract
Background and Aim: Plant-based diets are associated with potential health benefits, but the contribution of gut microbiota remains to be clarified. We aimed to identify differences in key features of microbiome composition and function with relevance to metabolic health in individuals adhering to a vegan vs. omnivore diet. Methods: This cross-sectional study involved lean, healthy vegans (n = 62) and omnivore (n = 33) subjects. We assessed their glucose and lipid metabolism and employed an integrated multi-omics approach (16S rRNA sequencing, metabolomics profiling) to compare dietary intake, metabolic health, gut microbiome, and fecal, serum, and urine metabolomes. Results: The vegans had more favorable glucose and lipid homeostasis profiles than the omnivores. Long-term reported adherence to a vegan diet affected only 14.8% of all detected bacterial genera in fecal microbiome. However, significant differences in vegan and omnivore metabolomes were observed. In feces, 43.3% of all identified metabolites were significantly different between the vegans and omnivores, such as amino acid fermentation products p-cresol, scatole, indole, methional (lower in the vegans), and polysaccharide fermentation product short- and medium-chain fatty acids (SCFAs, MCFAs), and their derivatives (higher in the vegans). Vegan serum metabolome differed markedly from the omnivores (55.8% of all metabolites), especially in amino acid composition, such as low BCAAs, high SCFAs (formic-, acetic-, propionic-, butyric acids), and dimethylsulfone, the latter two being potential host microbiome co-metabolites. Using a machine-learning approach, we tested the discriminative power of each dataset. Best results were obtained for serum metabolome (accuracy rate 91.6%). Conclusion: While only small differences in the gut microbiota were found between the groups, their metabolic activity differed substantially. In particular, we observed a significantly different abundance of fermentation products associated with protein and carbohydrate intakes in the vegans. Vegans had significantly lower abundances of potentially harmful (such as p-cresol, lithocholic acid, BCAAs, aromatic compounds, etc.) and higher occurrence of potentially beneficial metabolites (SCFAs and their derivatives).
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Affiliation(s)
- Magdalena Prochazkova
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Eva Budinska
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia
| | - Helena Pelantova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Czech Academy of Sciences, Prague, Czechia
| | - Jaromir Hradecky
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Marie Heczkova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Nikola Daskova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,First Faculty of Medicine, Charles University, Prague, Czechia
| | - Miriam Bratova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Istvan Modos
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Petra Videnska
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Petra Splichalova
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Brno, Czechia
| | - Solomon A Sowah
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - Maria Kralova
- Department of Applied Mathematics and Computer Science, Masaryk University, Brno, Czechia
| | - Marina Henikova
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Eliska Selinger
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Krystof Klima
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Karel Chalupsky
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Prague, Czechia
| | - Rikard Landberg
- Division of Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Goteborg, Sweden
| | - Tilman Kühn
- Institute of Global Food Security, Queen's University Belfast, Belfast, United Kingdom.,Heidelberg Institute of Global Health (HIGH), Medical Faculty and University Hospital, Heidelberg University, Heidelberg, Germany
| | - Jan Gojda
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Prague, Czechia
| | - Monika Cahova
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
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11
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Prochazkova P, Roubalova R, Dvorak J, Kreisinger J, Hill M, Tlaskalova-Hogenova H, Tomasova P, Pelantova H, Cermakova M, Kuzma M, Bulant J, Bilej M, Smitka K, Lambertova A, Holanova P, Papezova H. The intestinal microbiota and metabolites in patients with anorexia nervosa. Gut Microbes 2022; 13:1-25. [PMID: 33779487 PMCID: PMC8018350 DOI: 10.1080/19490976.2021.1902771] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Brain-gut microbiota interactions are intensively studied in connection with various neurological and psychiatric diseases. While anorexia nervosa (AN) pathophysiology is not entirely clear, it is presumably linked to microbiome dysbiosis. We aimed to elucidate the gut microbiota contribution in AN disease pathophysiology. We analyzed the composition and diversity of the gut microbiome of patients with AN (bacteriome and mycobiome) from stool samples before and after renourishment, and compared them to healthy controls. Further, levels of assorted neurotransmitters and short-chain fatty acids (SCFA) were analyzed in stool samples by MS and NMR, respectively. Biochemical, anthropometric, and psychometric profiles were assessed. The bacterial alpha-diversity parameter analyses revealed only increased Chao 1 index in patients with AN before the realimentation, reflecting their interindividual variation. Subsequently, core microbiota depletion signs were observed in patients with AN. Overrepresented OTUs (operation taxonomic units) in patients with AN taxonomically belonged to Alistipes, Clostridiales, Christensenellaceae, and Ruminococcaceae. Underrepresented OTUs in patients with AN were Faecalibacterium, Agathobacter, Bacteroides, Blautia, and Lachnospira. Patients exhibited greater interindividual variation in the gut bacteriome, as well as in metagenome content compared to controls, suggesting altered bacteriome functions. Patients had decreased levels of serotonin, GABA, dopamine, butyrate, and acetate in their stool samples compared to controls. Mycobiome analysis did not reveal significant differences in alpha diversity and fungal profile composition between patients with AN and healthy controls, nor any correlation of the fungal composition with the bacterial profile. Our results show the changed profile of the gut microbiome and its metabolites in patients with severe AN. Although therapeutic partial renourishment led to increased body mass index and improved psychometric parameters, SCFA, and neurotransmitter profiles, as well as microbial community compositions, did not change substantially during the hospitalization period, which can be potentially caused by only partial weight recovery.
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Affiliation(s)
- Petra Prochazkova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic,CONTACT Petra Prochazkova Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, Prague 4, Prague14220, Czech Republic
| | - Radka Roubalova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jiri Dvorak
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Jakub Kreisinger
- Faculty of Science, Department of Zoology, Charles University, Prague, Czech Republic
| | - Martin Hill
- Department of Steroids and Proteohormones, Institute of Endocrinology, Prague, Czech Republic
| | - Helena Tlaskalova-Hogenova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Petra Tomasova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic,4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital, Prague, Czech Republic
| | - Helena Pelantova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Martina Cermakova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Josef Bulant
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic,Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Martin Bilej
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Kvido Smitka
- First Faculty of Medicine, Institute of Physiology, Charles University, Prague, Czech Republic,First Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czech Republic
| | - Alena Lambertova
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Petra Holanova
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Hana Papezova
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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12
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Delawská K, Divoká P, Sedlák D, Kuzma M, Saurav K, Macho M, Steinbach G, Hrouzek P. New Insights into Tolytoxin Effect in Human Cancer Cells: Apoptosis Induction and the Relevance of Hydroxyl Substitution of Its Macrolide Cycle on Compound Potency. Chembiochem 2021; 23:e202100489. [PMID: 34821450 DOI: 10.1002/cbic.202100489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/16/2021] [Indexed: 11/06/2022]
Abstract
Scytophycins, including tolytoxin, represent a class of actin disrupting macrolides with strong antiproliferative effects on human cells. Despite intense research, little attention has been paid to scytophycin-induced cell death or the structural features affecting its potency. We show that tolytoxin and its natural analogue, 7-O-methylscytophycin B, lacking the hydroxyl substitution in its macrolactone ring, differ substantially in their cytotoxic effect. Both compounds increase the level of caspases 3/7, which are the main executioner proteases during apoptosis, in HeLa wild-type (WT) cells. However, no caspase activity was detected in HeLa cells lacking Bax/Bak proteins crucial for caspase activation via the mitochondrial pathway. Obtained data strongly suggests that scytophycins are capable of inducing mitochondria-dependent apoptosis. These findings encourage further research in structure-activity relationships in scytophycins and highlight the potential of these compounds in targeted drug delivery.
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Affiliation(s)
- Kateřina Delawská
- Institute of Microbiology of the Czech Academy of Sciences - Center Algatech, Novohradska 237, 37981, Trebon, Czech Republic.,Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760, 37005, České Budějovice, Czech Republic
| | - Petra Divoká
- Institute of Microbiology of the Czech Academy of Sciences - Center Algatech, Novohradska 237, 37981, Trebon, Czech Republic
| | - David Sedlák
- CZ-OPENSCREEN: National Infrastructure for Chemical Biology, Institute of Molecular Genetics of the ASCR, v. v. i., 142 20, Prague 4, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20, Prague, Czech Republic
| | - Kumar Saurav
- Institute of Microbiology of the Czech Academy of Sciences - Center Algatech, Novohradska 237, 37981, Trebon, Czech Republic
| | - Markéta Macho
- Institute of Microbiology of the Czech Academy of Sciences - Center Algatech, Novohradska 237, 37981, Trebon, Czech Republic.,Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1760, 37005, České Budějovice, Czech Republic
| | - Gabor Steinbach
- Institute of Biophysics, Biological Research Center, 6726, Temesvári krt. 62., Szeged, Hungary
| | - Pavel Hrouzek
- Institute of Microbiology of the Czech Academy of Sciences - Center Algatech, Novohradska 237, 37981, Trebon, Czech Republic
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13
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Tomášová P, Procházková P, Roubalová R, Dvořák J, Tlaskalová-Hogenová H, Čermáková M, Pelantová H, Šedivá B, Vecka M, Papežová H, Kuzma M. NMR- and MS-Based Untargeted Metabolomic Study of Stool and Serum Samples from Patients with Anorexia Nervosa. J Proteome Res 2021; 21:778-787. [PMID: 34606283 DOI: 10.1021/acs.jproteome.1c00537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Anorexia nervosa (AN), a pathological restriction of food intake, leads to metabolic dysregulation. We conducted a metabolomics study to reveal changes caused by AN and the effect of hospital realimentation on metabolism. Both stool and serum from patients with AN and healthy controls were analyzed by NMR and MS. Statistical analysis revealed several altered biochemical and anthropometric parameters and 50 changed metabolites, including phospholipids, acylcarnitines, amino acids, derivatives of nicotinic acid, nucleotides, and energy metabolism intermediates. Biochemical and anthropometric parameters were correlated with metabolomic data. Metabolic changes in patients with AN described in our study imply serious system disruption defects, such as the development of inflammation and oxidative stress, changed free thyroxine (fT4) and thyroid-stimulating hormone (TSH) levels, a deficit of vitamins, muscle mass breakdown, and a decrease in ketone bodies as an important source of energy for the brain and heart. Furthermore, our data indicate only a very slight improvement after treatment. However, correlations of metabolomic results with body weight, interleukin 6, tumor necrosis factor α, fT4, and TSH might entail better prognoses and treatment effectiveness in patients with better system parameter status. Data sets are deposited in MassIVE: MSV000087713, DOI: 10.25345/C57R7X.
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Affiliation(s)
- Petra Tomášová
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic.,Fourth Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 121 08 Praha 2, Czech Republic
| | - Petra Procházková
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Radka Roubalová
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Jiří Dvořák
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Helena Tlaskalová-Hogenová
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Martina Čermáková
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Helena Pelantová
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Blanka Šedivá
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic.,Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic
| | - Marek Vecka
- Fourth Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 121 08 Praha 2, Czech Republic
| | - Hana Papežová
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Ke Karlovu 11, 121 08 Prague 2, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic
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14
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Daskova N, Heczkova M, Modos I, Videnska P, Splichalova P, Pelantova H, Kuzma M, Gojda J, Cahova M. Determination of Butyrate Synthesis Capacity in Gut Microbiota: Quantification of but Gene Abundance by qPCR in Fecal Samples. Biomolecules 2021; 11:1303. [PMID: 34572516 PMCID: PMC8469203 DOI: 10.3390/biom11091303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/28/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 12/11/2022] Open
Abstract
Butyrate is formed in the gut during bacterial fermentation of dietary fiber and is attributed numerous beneficial effects on the host metabolism. We aimed to develop a method for the assessment of functional capacity of gut microbiota butyrate synthesis based on the qPCR quantification of bacterial gene coding butyryl-CoA:acetate CoA-transferase, the key enzyme of butyrate synthesis. In silico, we identified bacteria possessing but gene among human gut microbiota by searching but coding sequences in available databases. We designed and validated six sets of degenerate primers covering all selected bacteria, based on their phylogenetic nearness and sequence similarity, and developed a method for gene abundance normalization in human fecal DNA. We determined but gene abundance in fecal DNA of subjects with opposing dietary patterns and metabolic phenotypes-lean vegans (VG) and healthy obese omnivores (OB) with known fecal microbiota and metabolome composition. We found higher but gene copy number in VG compared with OB, in line with higher fecal butyrate content in VG group. We further found a positive correlation between the relative abundance of target bacterial genera identified by next-generation sequencing and groups of but gene-containing bacteria determined by specific primers. In conclusion, this approach represents a simple and feasible tool for estimation of microbial functional capacity.
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Affiliation(s)
- Nikola Daskova
- Institute for Clinical and Experimental Medicine, Videnska 1958, 140 21 Prague 4, Czech Republic; (M.H.); (I.M.); (M.C.)
- First Faculty of Medicine, Charles University, Katerinska 1660/32, 121 08 Prague, Czech Republic
| | - Marie Heczkova
- Institute for Clinical and Experimental Medicine, Videnska 1958, 140 21 Prague 4, Czech Republic; (M.H.); (I.M.); (M.C.)
| | - Istvan Modos
- Institute for Clinical and Experimental Medicine, Videnska 1958, 140 21 Prague 4, Czech Republic; (M.H.); (I.M.); (M.C.)
| | - Petra Videnska
- RECETOX, Faculty of Science Masaryk University, Kamenice 753, 625 00 Brno, Czech Republic; (P.V.); (P.S.)
| | - Petra Splichalova
- RECETOX, Faculty of Science Masaryk University, Kamenice 753, 625 00 Brno, Czech Republic; (P.V.); (P.S.)
| | - Helena Pelantova
- Institute of Microbiology, AS CR, Videnska 1083, 142 20 Prague 4, Czech Republic; (H.P.); (M.K.)
| | - Marek Kuzma
- Institute of Microbiology, AS CR, Videnska 1083, 142 20 Prague 4, Czech Republic; (H.P.); (M.K.)
- Department of Analytical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 1192/12, 779 00 Olomouc, Czech Republic
| | - Jan Gojda
- Department of Internal Medicine, Kralovske Vinohrady University Hospital and Third Faculty of Medicine, Charles University, Srobarova 1150, 100 34 Prague 10, Czech Republic;
| | - Monika Cahova
- Institute for Clinical and Experimental Medicine, Videnska 1958, 140 21 Prague 4, Czech Republic; (M.H.); (I.M.); (M.C.)
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15
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Nupur, Kuzma M, Hájek J, Hrouzek P, Gardiner AT, Lukeš M, Moos M, Šimek P, Koblížek M. Structure elucidation of the novel carotenoid gemmatoxanthin from the photosynthetic complex of Gemmatimonas phototrophica AP64. Sci Rep 2021; 11:15964. [PMID: 34354109 PMCID: PMC8342508 DOI: 10.1038/s41598-021-95254-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/20/2021] [Indexed: 11/09/2022] Open
Abstract
Gemmatimonas phototrophica AP64 is the first phototrophic representative of the bacterial phylum Gemmatimonadetes. The cells contain photosynthetic complexes with bacteriochlorophyll a as the main light-harvesting pigment and an unknown carotenoid with a single broad absorption band at 490 nm in methanol. The carotenoid was extracted from isolated photosynthetic complexes, and purified by liquid chromatography. A combination of nuclear magnetic resonance (1H NMR, COSY, 1H-13C HSQC, 1H-13C HMBC, J-resolved, and ROESY), high-resolution mass spectroscopy, Fourier-transformed infra-red, and Raman spectroscopy was used to determine its chemical structure. The novel linear carotenoid, that we have named gemmatoxanthin, contains 11 conjugated double bonds and is further substituted by methoxy, carboxyl and aldehyde groups. Its IUPAC-IUBMB semi-systematic name is 1'-Methoxy-19'-oxo-3',4'-didehydro-7,8,1',2'-tetrahydro- Ψ, Ψ carotene-16-oic acid. To our best knowledge, the presence of the carboxyl, methoxy and aldehyde groups on a linear C40 carotenoid backbone is reported here for the first time.
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Affiliation(s)
- Nupur
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, Prague, Czech Republic
| | - Jan Hájek
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, České Budějovice, Czech Republic
| | - Pavel Hrouzek
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, České Budějovice, Czech Republic
| | - Alastair T Gardiner
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic
| | - Martin Lukeš
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic
| | - Martin Moos
- Biology Centre of the Czech Academy of Sciences, Branišovská 1160/31, 370 05, České Budějovice, Czech Republic
| | - Petr Šimek
- Biology Centre of the Czech Academy of Sciences, Branišovská 1160/31, 370 05, České Budějovice, Czech Republic
| | - Michal Koblížek
- Centre Algatech, Institute of Microbiology of the Czech Academy of Sciences, 379 81, Třeboň, Czech Republic.
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16
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Abstract
A new method was developed for the mild and selective bromination of simple aromatic compounds and flavonoids in good yields using α,β-dibromohydrocinnamic acid in the presence of a base. This procedure enables selective mono- or dibromination of compounds highly sensitive to oxidative or radical attack. New brominated derivatives of silymarin flavonolignans and related flavonoids were prepared. These brominated derivatives can be used as valuable synthetic intermediates in further synthesis.
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Affiliation(s)
- Martina Hurtová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
- University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - David Biedermann
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
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17
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Abstract
INTRODUCTION Recent breakthrough recognition of metastasis-free survival as a clinically relevant endpoint has opened a new era in the management of advanced prostate cancer. The need for new, intermediate endpoints is the logical consequence of scientific advances in prostate carcinoma. The treatment algorithms for non-metastatic castration-resistant prostate cancer (M0 CRPC) have recently been updated by adding novel anti-androgen apalutamide, and also enzalutamide for high-risk patients. OBJECTIVE To review clinical evidence of metastasis-free survival as an efficacy endpoint used in prostate cancer studies, especially those in an advanced stage of the disease and identify its clinical benefit and correlation with overall survival. METHODS Literature search up to October 2019 was conducted, including clinical trials and clinical practice guidelines. EVIDENCE SYNTHESIS Metastasis-free survival (MFS) was used as the primary endpoint in the registration of clinical trials of second-generation anti-androgens. The study results have demonstrated the beneficial effect of these anti-androgens on delaying the development of metastases or death (MFS), with median MFSextended by 22‒24 months. The correlation tests have shown a positive correlation of MFS and overall survival. CONCLUSION The metastasis-free survival can be considered a clinically significant and reliable efficacy endpoint in both localized prostate cancer patients and M0 CRPC patients being at high-risk of disease progression (Ref. 15).
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Tomášová P, Čermáková M, Pelantová H, Vecka M, Kratochvílová H, Lipš M, Lindner J, Ivák P, Netuka I, Šedivá B, Haluzík M, Kuzma M. Lipid Profiling in Epicardial and Subcutaneous Adipose Tissue of Patients with Coronary Artery Disease. J Proteome Res 2020; 19:3993-4003. [DOI: 10.1021/acs.jproteome.0c00269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Martina Čermáková
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Vecka
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Helena Kratochvílová
- Institute of Medical Biochemistry and Laboratory Diagnostics; First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Michal Lipš
- Department of Anaesthesiology, Resuscitation and Intensive Care, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Jaroslav Lindner
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | | | | | - Blanka Šedivá
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
- Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics; First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08 Prague 2, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
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19
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Steiningerova L, Kamenik Z, Gazak R, Kadlcik S, Bashiri G, Man P, Kuzma M, Pavlikova M, Janata J. Different Reaction Specificities of F 420H 2-Dependent Reductases Facilitate Pyrrolobenzodiazepines and Lincomycin To Fit Their Biological Targets. J Am Chem Soc 2020; 142:3440-3448. [PMID: 31944685 DOI: 10.1021/jacs.9b11234] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Antitumor pyrrolobenzodiazepines (PBDs), lincosamide antibiotics, quorum-sensing molecule hormaomycin, and antimicrobial griselimycin are structurally and functionally diverse groups of actinobacterial metabolites. The common feature of these compounds is the incorporation of l-tyrosine- or l-leucine-derived 4-alkyl-l-proline derivatives (APDs) in their structures. Here, we report that the last reaction in the biosynthetic pathway of APDs, catalyzed by F420H2-dependent Apd6 reductases, contributes to the structural diversity of APD precursors. Specifically, the heterologous overproduction of six Apd6 enzymes demonstrated that Apd6 from the biosynthesis of PBDs and hormaomycin can reduce only an endocyclic imine double bond, whereas Apd6 LmbY and partially GriH from the biosyntheses of lincomycin and griselimycin, respectively, also reduce the more inert exocyclic double bond of the same 4-substituted Δ1-pyrroline-2-carboxylic acid substrate, making LmbY and GriH unusual, if not unique, among reductases. Furthermore, the differences in the reaction specificity of the Apd6 reductases determine the formation of the fully saturated APD moiety of lincomycin versus the unsaturated APD moiety of PBDs, providing molecules with optimal shapes to bind their distinct biological targets. Moreover, the Apd6 reductases establish the first F420H2-dependent enzymes from the luciferase-like hydride transferase protein superfamily in the biosynthesis of bioactive molecules. Finally, our bioinformatics analysis demonstrates that Apd6 and their homologues, widely distributed within several bacterial phyla, play a role in the formation of novel yet unknown natural products with incorporated l-proline-like precursors and likely in the microbial central metabolism.
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Affiliation(s)
- Lucie Steiningerova
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic.,Department of Genetics and Microbiology, Faculty of Science , Charles University in Prague , Vinicna 5 , 128 00 Praha 2 , Czech Republic
| | - Zdenek Kamenik
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic.,Institute of Microbiology, v.v.i., BIOCEV, Czech Academy of Sciences , 252 50 Vestec , Czech Republic
| | - Radek Gazak
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic
| | - Stanislav Kadlcik
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic
| | - Ghader Bashiri
- Laboratory of Structural Biology and Maurice Wilkins Center for Molecular Biodiscovery, School of Biological Sciences , University of Auckland , Auckland 1010 , New Zealand
| | - Petr Man
- Institute of Microbiology, v.v.i., BIOCEV, Czech Academy of Sciences , 252 50 Vestec , Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic
| | - Magdalena Pavlikova
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic
| | - Jiri Janata
- Institute of Microbiology, v.v.i., Czech Academy of Sciences , Videnska 1083 , 142 20 Praha 4 , Czech Republic
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20
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Mach S, Jegorov A, Kuzma M, Zápal J, Šimek Z, Čejka J, Eigner V. Epoxidation is the preferred pathway of first-stage metabolism of abiraterone acetate in brown bullhead (Ameiurus nebulosus). Environ Sci Pollut Res Int 2019; 26:34896-34904. [PMID: 31656995 DOI: 10.1007/s11356-019-06568-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
Twenty juvenile individuals of brown bullhead (Ameiurus nebulosus), average weight 77 g, were fed by abiraterone acetate prodrug dissolved in olive oil via gastric probe. Dose applied was 3 mg/10 g fish weight. After feeding, they were let out into aquarium and kept there for 3 days. Aquarium water containing excreted metabolites was extracted, and sample was purified and finally analyzed by means of HPLC/MS. Expected both primary (products of hydroxylation) and secondary (products of glucuronidation and sulfatation) metabolites of abiraterone acetate were identified. The NMR measurement of one of the prevailing metabolites presumed to be one of possible hydroxy-abiraterones discovered that it is not hydroxy-abiraterone but abiraterone 16,17-epoxide. Closer analysis of MS2 and MS3 spectra revealed that one of presumed hydroxy-abiraterone acetates and also some secondary metabolites are probably 16,17-epoxides.
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Affiliation(s)
- Samuel Mach
- Teva Czech Industries, s.r.o., Ostravská 29, 747 70, Opava, Komárov, Czech Republic.
- Masaryk University Brno, RECETOX, Kamenice 126/3, 625 00, Brno, Czech Republic.
| | - Alexandr Jegorov
- Teva Czech Industries, s.r.o., Ostravská 29, 747 70, Opava, Komárov, Czech Republic
| | - Marek Kuzma
- Academy of Sciences of the Czech Republic, Inst. of Microbiology, Videňská 1083, 142 20, Prague 4, Czech Republic
| | - Jakub Zápal
- Academy of Sciences of the Czech Republic, Inst. of Microbiology, Videňská 1083, 142 20, Prague 4, Czech Republic
| | - Zdeněk Šimek
- Masaryk University Brno, RECETOX, Kamenice 126/3, 625 00, Brno, Czech Republic
| | - Jan Čejka
- Prague Institute of Chemical Technology, Technická 5, 166 28, Prague 6, Czech Republic
| | - Václav Eigner
- Prague Institute of Chemical Technology, Technická 5, 166 28, Prague 6, Czech Republic
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21
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Heřmánková E, Zatloukalová M, Biler M, Sokolová R, Bancířová M, Tzakos AG, Křen V, Kuzma M, Trouillas P, Vacek J. Redox properties of individual quercetin moieties. Free Radic Biol Med 2019; 143:240-251. [PMID: 31381971 DOI: 10.1016/j.freeradbiomed.2019.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/24/2019] [Accepted: 08/01/2019] [Indexed: 12/21/2022]
Abstract
Quercetin is one of the most prominent and widely studied flavonoids. Its oxidation has been previously investigated only indirectly by comparative analyses of structurally analogous compounds, e.g. dihydroquercetin (taxifolin). To provide direct evidence about the mechanism of quercetin oxidation, we employed selective alkylation procedures for the step-by-step blocking of individual redox active sites, i.e. the catechol, resorcinol and enol C-3 hydroxyls, as represented by newly prepared quercetin derivatives 1-3. Based on the structure-activity relationship (SAR), electrochemical, and computational (density functional theory) studies, we can clearly confirm that quercetin is oxidized in the following steps: the catechol moiety is oxidized first, forming the benzofuranone derivative via intramolecular rearrangement mechanism; therefore the quercetin C-3 hydroxy group cannot be involved in further oxidation reactions or other biochemical processes. The benzofuranone is oxidized subsequently, followed by oxidation of the resorcinol motif to complete the electrochemical cascade of reactions. Derivatization of individual quercetin hydroxyls has a significant effect on its redox behavior, and, importantly, on its antiradical and stability properties, as shown in DPPH/ABTS radical scavenging assays and UV-Vis spectrophotometry, respectively. The SAR data reported here are instrumental for future studies on the oxidation of biologically or technologically important flavonoids and other polyphenols or polyhydroxy substituted aromatics. This is the first complete and direct study mapping redox properties of individual moieties in quercetin structure.
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Affiliation(s)
- Eva Heřmánková
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic
| | - Martina Zatloukalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Michal Biler
- INSERM U1248, Univ. Limoges, 2 rue du Docteur Marcland, 87025, Limoges, France
| | - Romana Sokolová
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23, Prague 8, Czech Republic
| | - Martina Bancířová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Andreas G Tzakos
- Department of Chemistry, University of Ioannina, Ioannina, 45110, Greece
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic.
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic
| | - Patrick Trouillas
- INSERM U1248, Univ. Limoges, 2 rue du Docteur Marcland, 87025, Limoges, France; RCPTM, Palacký University, 17. listopadu 1192/12, Olomouc, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic.
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22
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Abstract
Several families of 3,4-dimethylthiolane-based compounds spontaneously formed upon cutting of onion (Allium cepa) were studied. We report the isolation of the first known example of a naturally occurring dithiolactone, 5-hydroxy-3,4-dimethylthiolane-2-thione (cepadithiolactone A, C6H10OS2). Furthermore, on the basis of conceivable spectroscopic evidence (MS, NMR, IR), we could disprove the structure previously proposed for onionin A (C9H16O2S2), which is shown to be in fact (E)-3,4-dimethyl-5-(1-propenylsulfinyl)thiolane-2-ol. The identification of hitherto unknown methyl and propyl homologues of onionin A (dubbed onionins B and C, respectively) is also reported. Furthermore, the existence of the methyl and propyl homologues of cepathiolanes A (C9H16O2S3), trivially named cepathiolanes B and C, respectively, has been newly revealed. The organoleptic properties of these 3,4-dimethylthiolanes and their role in the formation of the pink discoloration of processed onion were also evaluated.
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Affiliation(s)
- Iveta Štefanová
- Department of Applied Chemistry , University of South Bohemia , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Jakub Zápal
- Laboratory of Molecular Structure Characterization, Institute of Microbiology , The Czech Academy of Sciences , Vídeňská 1083 , 142 20 Prague 4 , Czech Republic
| | - Martin Moos
- Laboratory of Analytical Biochemistry, Biology Centre , The Czech Academy of Sciences , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology , The Czech Academy of Sciences , Vídeňská 1083 , 142 20 Prague 4 , Czech Republic
| | - Roman Kubec
- Department of Applied Chemistry , University of South Bohemia , Branišovská 31 , 370 05 České Budějovice , Czech Republic
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23
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Chambers CS, Biedermann D, Valentová K, Petrásková L, Viktorová J, Kuzma M, Křen V. Preparation of Retinoyl-Flavonolignan Hybrids and Their Antioxidant Properties. Antioxidants (Basel) 2019; 8:antiox8070236. [PMID: 31340489 PMCID: PMC6680806 DOI: 10.3390/antiox8070236] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 11/27/2022] Open
Abstract
Antioxidants protect the structural and functional components in organisms against oxidative stress. Most antioxidants are of plant origin as the plants are permanently exposed to oxidative stress (UV radiation, photosynthetic reactions). Both carotenoids and flavonoids are prominent antioxidant and anti-radical agents often occurring together in the plant tissues and acting in lipophilic and hydrophilic milieu, respectively. They are complementary in their anti-radical activity. This study describes the synthesis of a series of hybrid ester conjugates of retinoic acid with various flavonolignans, such as silybin, 2,3-dehydrosilybin and isosilybin. Antioxidant/anti-radical activities and bio-physical properties of novel covalent carotenoid-flavonoid hybrids, as well as various mixtures of the respective parent components, were investigated. Retinoyl conjugates with silybin—which is the most important flavonolignan in silymarin complex—(and its pure diastereomers) displayed better 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity than both the parent compounds and their equimolar mixtures.
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Affiliation(s)
- Christopher S Chambers
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - David Biedermann
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Kateřina Valentová
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Lucie Petrásková
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Jitka Viktorová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic
| | - Marek Kuzma
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic
| | - Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic.
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24
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Kostovcikova K, Coufal S, Galanova N, Fajstova A, Hudcovic T, Kostovcik M, Prochazkova P, Jiraskova Zakostelska Z, Cermakova M, Sediva B, Kuzma M, Tlaskalova-Hogenova H, Kverka M. Diet Rich in Animal Protein Promotes Pro-inflammatory Macrophage Response and Exacerbates Colitis in Mice. Front Immunol 2019; 10:919. [PMID: 31105710 PMCID: PMC6497971 DOI: 10.3389/fimmu.2019.00919] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
Diet is a major factor determining gut microbiota composition and perturbances in this complex ecosystem are associated with the inflammatory bowel disease (IBD). Here, we used gnotobiotic approach to analyze, how interaction between diet rich in proteins and gut microbiota influences the sensitivity to intestinal inflammation in murine model of ulcerative colitis. We found that diet rich in animal protein (aHPD) exacerbates acute dextran sulfate sodium (DSS)-induced colitis while diet rich in plant protein (pHPD) does not. The deleterious effect of aHPD was also apparent in chronic DSS colitis and was associated with distinct changes in gut bacteria and fungi. Therefore, we induced acute DSS-colitis in germ-free mice and transferred gut microbiota from aCD or aHPD fed mice to find that this effect requires presence of microbes and aHPD at the same time. The aHPD did not change the number of regulatory T cells or Th17 cells and still worsened the colitis in immuno-deficient RAG2 knock-out mice suggesting that this effect was not dependent on adaptive immunity. The pro-inflammatory effect of aHPD was, however, abrogated when splenic macrophages were depleted with clodronate liposomes. This treatment prevented aHPD induced increase in colonic Ly-6Chigh pro-inflammatory monocytes, but the ratio of resident Ly-6C−/low macrophages was not changed. These data show that the interactions between dietary protein of animal origin and gut microbiota increase sensitivity to intestinal inflammation by promoting pro-inflammatory response of monocytes.
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Affiliation(s)
- Klara Kostovcikova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia.,Laboratory of Cell and Developmental Biology, Institute of Molecular Genetics of the CAS, v.v.i., Prague, Czechia
| | - Stepan Coufal
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Natalie Galanova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Alena Fajstova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Tomas Hudcovic
- Laboratory of Gnotobiology, Institute of Microbiology of the CAS, v.v.i., Nový Hrádek, Czechia
| | - Martin Kostovcik
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Petra Prochazkova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | | | - Martina Cermakova
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Blanka Sediva
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia.,Faculty of Applied Sciences, University of West Bohemia, Pilsen, Czechia
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Helena Tlaskalova-Hogenova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia
| | - Miloslav Kverka
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v.v.i., Prague, Czechia.,Department of Pharmacology, Institute of Experimental Medicine of the CAS, v.v.i., Prague, Czechia
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25
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Tomášová P, Čermáková M, Pelantová H, Vecka M, Kratochvílová H, Lipš M, Lindner J, Šedivá B, Haluzík M, Kuzma M. Minor lipids profiling in subcutaneous and epicardial fat tissue using LC/MS with an optimized preanalytical phase. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1113:50-59. [PMID: 30897405 DOI: 10.1016/j.jchromb.2019.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 10/11/2018] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 12/25/2022]
Abstract
Analysis of bioactive lipids in adipose tissue could lead to better understanding of the pathogenesis of obesity and its complications. However, current MS methods are limited by a high content of triacylglycerols (TAGs), which markedly surpasses the amount of other lipids and suppresses their ionization. The aim of our study was thus to optimize the preanalytical phase of lipid analysis in adipose tissue, focusing in particular on less-abundant lipids. Next, the optimized method was used to describe the differences between epicardial and subcutaneous adipose tissues obtained from patients undergoing cardiac surgery. Lipids were extracted using a modified Folch method with subsequent detachment of TAGs by thin layer chromatography (TLC). The extracts with/without TAGs were analyzed by tandem LC/MS. The repeatability of the presented method expressed by the median of the coefficients of variation was 12/5% for analysis with/without TAGs separation, respectively. The difference in the relative abundance of TAGs gained with/without TLC was, on average, 19% and did not reach significance (p value > 0.05) for any identified TAG. The novel preanalytical step allowed us to detect 37 lipids, which could not have been detected without TAG separation, because their signal to noise ratio is <5 in current methods of untargeted lipidomics. These lipids belong predominately to ceramides, glycerophosphatidylserines, glycerophosphatidylinsitols, sphingomyelins, glycerophosphatidylcholines, glycerophosphatidylethanolamines, diacylglycerols. The two adipose tissue depots differed mainly in the following lipid classes: glycerophosphatidylcholines, glycerophosphatidylinositols, glycerophosphatidylethanolamine, and sphingomyelins. Moreover, other major lipids showed distinctly different distributions between the two adipose tissues. Among these, the changes in TAGs were the most striking, which correspond to previously published data describing the differences between omental and subcutaneous adipose tissue. Implementation of the TLC step for the elimination of TAGs was crucial for enhancing the MS detection limit of minor lipids in adipose tissue. The differences between the overall lipid profiles of subcutaneous and epicardial tissue reflect their different functions arising from their location.
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Affiliation(s)
- Petra Tomášová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic; 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Martina Čermáková
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic; Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Vecka
- 4th Medical Department, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U Nemocnice 2, 128 08 Praha 2, Czech Republic
| | - Helena Kratochvílová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08, Prague 2, Czech Republic; Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague 4, Czech Republic
| | - Michal Lipš
- Department of Anaesthesiology, Resuscitation and Intensive Care, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Jaroslav Lindner
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Blanka Šedivá
- Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic; Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, U Nemocnice 2, 128 08, Prague 2, Czech Republic; Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic.
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Čermáková M, Pelantová H, Neprašová B, Šedivá B, Maletínská L, Kuneš J, Tomášová P, Železná B, Kuzma M. Metabolomic Study of Obesity and Its Treatment with Palmitoylated Prolactin-Releasing Peptide Analog in Spontaneously Hypertensive and Normotensive Rats. J Proteome Res 2019; 18:1735-1750. [PMID: 30810318 DOI: 10.1021/acs.jproteome.8b00964] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this study, the combination of metabolomics and standard biochemical and biometric parameters was used to describe the metabolic effects of diet-induced obesity and its treatment with the novel antiobesity compound palm11-PrRP31 (palmitoylated prolactin-releasing peptide) in spontaneously hypertensive rats (SHR) and normotensive Wistar Kyoto rats (WKY). The results showed that SHR on a high-fat (HF) diet were normoglycemic with obesity and hypertension, while WKY on the HF diet were normotensive and obese with prediabetes. NMR-based metabolomics revealed mainly several microbial cometabolites altered by the HF diet, particularly in urine. The HF diet induced similar changes in both models. However, two groups of genotype-specific metabolites were defined: metabolites specific to the genotype at baseline (e.g., 1-methylnicotinamide, phenylacetylglycine, taurine, methylamine) and metabolites reacting specifically to the HF diet in individual genotypes (2-oxoglutarate, dimethylamine, N-butyrylglycine, p-cresyl sulfate). The palm11-PrRP31 lowered body weight and improved biochemical and biometric parameters in both strains, and it improved glucose tolerance in WKY rats on the HF diet. In urine, the therapy induced significant decrease of formate and 1-methylnicotinamide in SHR and alanine, allantoin, dimethylamine, and N-butyrylglycine in WKY. Altogether, our study confirms the effectiveness of palm11-PrRP31 for antiobesity treatment.
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Affiliation(s)
- Martina Čermáková
- Faculty of Chemical Technology , University of Chemistry and Technology Prague , Technická 5 , 166 28 , Prague 6 , Czech Republic
| | | | - Barbora Neprašová
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 , Prague 6 , Czech Republic
| | - Blanka Šedivá
- Faculty of Applied Sciences , University of West Bohemia , Univerzitní 8 , 306 14 , Plzeň , Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 , Prague 6 , Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 , Prague 6 , Czech Republic
| | - Petra Tomášová
- Fourth Medical Department, First Faculty of Medicine , Charles University in Prague and General University Hospital , U nemocnice 1 , 128 08 Praha 2 , Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo nám. 2 , 166 10 , Prague 6 , Czech Republic
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Vrbova P, Smaha J, Stepan J, Tobias D, Kuzma M, Payer J, Koller T. Prevalence of sarcopenia among hospitalized internal medicine patients: A cross-sectional single-center pilot study according to EWGSOP2 criteria. BRATISL MED J 2019; 120:717-722. [PMID: 31663344 DOI: 10.4149/bll_2019_128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
INTRODUCTION Sarcopenia is associated with a higher risk of adverse outcomes among hospitalized patients with chronic diseases. Currently, an unmet need lies in its low diagnostic yield. We conducted a pilot study with the aim to screen hospitalized patients for sarcopenia using the EWGSOP2 criteria. PATIENTS AND METHODS A cross-sectional study among hospitalized patients in internal medicine was carried out, inclusion criteria: age>55, ability to stand-up from a chair. EXCLUSION CRITERIA bed-bound, terminal stages of the disease, ICU stay. We measured hand-grip strength, fat-free mass by bioimpedance and short physical performance battery test (SPPB). Sarcopenia was diagnosed in low hand-grip strength and low muscle mass (EWGSOP2), severe sarcopenia in sarcopenic patients with low physical performance (SPPBT≤8). RESULTS 40 patients were enrolled, sarcopenia was diagnosed in 8/20 (40%) men and 3/20 (15%) women (p=0.15), severe sarcopenia in 6/20 men (30%) and 2/20 (10%) women (p=0.24). 65% of men and 40% of women had SPPBT≤8, and 60% of men and 55% of women had gait speed≤0.8m/s. CONCLUSION Among hospitalized internal medicine patients sarcopenia and severe sarcopenia are common, particularly in males. New diagnostic criteria provide a relatively simple and applicable tool for screening among internal medicine inpatients (Tab. 3, Ref. 25).
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Tomášová P, Bugáňová M, Pelantová H, Holubová M, Šedivá B, Železná B, Haluzík M, Maletínská L, Kuneš J, Kuzma M. Metabolomics Based on MS in Mice with Diet-Induced Obesity and Type 2 Diabetes Mellitus: the Effect of Vildagliptin, Metformin, and Their Combination. Appl Biochem Biotechnol 2018; 188:165-184. [DOI: 10.1007/s12010-018-2899-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/26/2018] [Indexed: 12/26/2022]
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Novák J, Škríba A, Zápal J, Kuzma M, Havlíček V. CycloBranch: An open tool for fine isotope structures in conventional and product ion mass spectra. J Mass Spectrom 2018; 53:1097-1103. [PMID: 30160332 DOI: 10.1002/jms.4285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/15/2018] [Accepted: 08/22/2018] [Indexed: 06/08/2023]
Abstract
Within the growing community of Fourier transform mass spectrometry users, the identification of fine isotope structure has become an indispensable method for molecular formula determination. In this work, the fine isotope envelopes for accessing the mutual ratio of 2 closely related pyoverdines in a mixture were used. Bacterial siderophores pyoverdines D and E cannot be easily separated via liquid chromatography-mass spectrometry because their structures differ in (de)amidation at the respective chromophore parts only. Their mutual ratio was determined in a mixture via nuclear magnetic resonance spectroscopy and semiquantitative mass spectrometry using our open-source software CycloBranch, which represents a genuine free tool supporting the determination of fine isotope structures in both conventional and product ion mass spectra. Native Bruker, Thermo, and Waters data formats are supported in addition to XML and plain text formats.
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Affiliation(s)
- Jiří Novák
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague 4, Czech Republic
| | - Anton Škríba
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague 4, Czech Republic
| | - Jakub Zápal
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague 4, Czech Republic
| | - Vladimír Havlíček
- Institute of Microbiology of the CAS, v.v.i., Videnska 1083, 142 20, Prague 4, Czech Republic
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Kubec R, Štefanová I, Moos M, Urajová P, Kuzma M, Zápal J. Allithiolanes: Nine Groups of a Newly Discovered Family of Sulfur Compounds Responsible for the Bitter Off-Taste of Processed Onion. J Agric Food Chem 2018; 66:8783-8794. [PMID: 30041517 DOI: 10.1021/acs.jafc.8b03118] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The compounds responsible for the bitter off-taste of processed onion ( Allium cepa) were studied. Using a series of sensory-guided HPLC fractionations, the existence of nine groups of hitherto unknown sulfur compounds has been revealed. On the basis of spectroscopic data (MS, NMR, and IR), it was found that these compounds, trivially named allithiolanes A-I, are members of a large family of structurally closely related derivatives of 3,4-dimethylthiolane S-oxide, with the general formulas of C xH yO2S4, C xH yO3S5, and C xH yO4S6 ( x = 10-18, y = 18-30). The presence of multiple stereoisomers was observed for each group of allithiolanes. Allithiolanes possess an unpleasantly bitter taste with detection thresholds in the range of 15-30 ppm. Formation pathways of these newly discovered sulfur compounds were proposed.
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Affiliation(s)
- Roman Kubec
- Department of Applied Chemistry , University of South Bohemia , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Iveta Štefanová
- Department of Applied Chemistry , University of South Bohemia , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Martin Moos
- Laboratory of Analytical Biochemistry, Biology Centre , The Czech Academy of Sciences , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Petra Urajová
- Centre Algatech, Institute of Microbiology , The Czech Academy of Sciences , Opatovický mlýn , 379 81 Třeboň , Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology , The Czech Academy of Sciences , Vídeňská 1083 , 142 20 Prague 4 , Czech Republic
| | - Jakub Zápal
- Laboratory of Molecular Structure Characterization, Institute of Microbiology , The Czech Academy of Sciences , Vídeňská 1083 , 142 20 Prague 4 , Czech Republic
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31
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Pavlikova M, Kamenik Z, Janata J, Kadlcik S, Kuzma M, Najmanova L. Novel pathway of 3-hydroxyanthranilic acid formation in limazepine biosynthesis reveals evolutionary relation between phenazines and pyrrolobenzodiazepines. Sci Rep 2018; 8:7810. [PMID: 29773836 PMCID: PMC5958127 DOI: 10.1038/s41598-018-26179-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 05/04/2018] [Indexed: 02/06/2023] Open
Abstract
Natural pyrrolobenzodiazepines (PBDs) form a large and structurally diverse group of antitumour microbial metabolites produced through complex pathways, which are encoded within biosynthetic gene clusters. We sequenced the gene cluster of limazepines and proposed their biosynthetic pathway based on comparison with five available gene clusters for the biosynthesis of other PBDs. Furthermore, we tested two recombinant proteins from limazepine biosynthesis, Lim5 and Lim6, with the expected substrates in vitro. The reactions monitored by LC-MS revealed that limazepine biosynthesis involves a new way of 3-hydroxyanthranilic acid formation, which we refer to as the chorismate/DHHA pathway and which represents an alternative to the kynurenine pathway employed for the formation of the same precursor in the biosynthesis of other PBDs. The chorismate/DHHA pathway is presumably also involved in the biosynthesis of PBD tilivalline, several natural products unrelated to PBDs, and its part is shared also with phenazine biosynthesis. The similarities between limazepine and phenazine biosynthesis indicate tight evolutionary links between these groups of compounds.
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Affiliation(s)
- Magdalena Pavlikova
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Zdenek Kamenik
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Jiri Janata
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Stanislav Kadlcik
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Lucie Najmanova
- Institute of Microbiology of the Czech Academy of Sciences, 142 20, Prague 4, Czech Republic.
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Hrdličková R, Zápal J, Václavíková Vilhanová B, Bugáňová M, Truhlářová K, Kuzma M, Červený L. Competitive asymmetric transfer hydrogenation of 3,4-dihydroisoquinolines employing Noyori-Ikariya catalytic complexes. Reac Kinet Mech Cat 2018. [DOI: 10.1007/s11144-018-1387-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vališ K, Grobárová V, Hernychová L, Bugáňová M, Kavan D, Kalous M, Černý J, Stodůlková E, Kuzma M, Flieger M, Černý J, Novák P. Reprogramming of leukemic cell metabolism through the naphthoquinonic compound Quambalarine B. Oncotarget 2017; 8:103137-103153. [PMID: 29262552 PMCID: PMC5732718 DOI: 10.18632/oncotarget.21663] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/21/2017] [Indexed: 12/31/2022] Open
Abstract
Abnormalities in cancer metabolism represent potential targets for cancer therapy. We have recently identified a natural compound Quambalarine B (QB), which inhibits proliferation of several leukemic cell lines followed by cell death. We have predicted ubiquinone binding sites of mitochondrial respiratory complexes as potential molecular targets of QB in leukemia cells. Hence, we tracked the effect of QB on leukemia metabolism by applying several omics and biochemical techniques. We have confirmed the inhibition of respiratory complexes by QB and found an increase in the intracellular AMP levels together with respiratory substrates. Inhibition of mitochondrial respiration by QB triggered reprogramming of leukemic cell metabolism involving disproportions in glycolytic flux, inhibition of proteins O-glycosylation, stimulation of glycine synthesis pathway, and pyruvate kinase activity, followed by an increase in pyruvate and a decrease in lactate levels. Inhibition of mitochondrial complex I by QB suppressed folate metabolism as determined by a decrease in formate production. We have also observed an increase in cellular levels of several amino acids except for aspartate, indicating the dependence of Jurkat (T-ALL) cells on aspartate synthesis. These results indicate blockade of mitochondrial complex I and II activity by QB and reduction in aspartate and folate metabolism as therapeutic targets in T-ALL cells. Anti-cancer activity of QB was also confirmed during in vivo studies, suggesting the therapeutic potential of this natural compound.
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Affiliation(s)
- Karel Vališ
- BIOCEV, Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Vestec, Czech Republic.,Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Valéria Grobárová
- Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Lucie Hernychová
- BIOCEV, Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Vestec, Czech Republic.,Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Martina Bugáňová
- Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Prague, Czech Republic.,Faculty of Chemical Technology, University of Chemistry and Technology, Prague, Czech Republic
| | - Daniel Kavan
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic.,Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Kalous
- Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiří Černý
- BIOCEV, Institute of Biotechnology, v.v.i., The Czech Academy of Sciences, Vestec, Czech Republic
| | - Eva Stodůlková
- Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Prague, Czech Republic
| | - Miroslav Flieger
- Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Černý
- Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Petr Novák
- BIOCEV, Institute of Microbiology, v.v.i., The Czech Academy of Sciences, Vestec, Czech Republic.,Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
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Václavíková Vilhanová B, Budinská A, Václavík J, Matoušek V, Kuzma M, Červený L. Asymmetric Transfer Hydrogenation of 1-Aryl-3,4-Dihydroisoquinolines Using a Cp*Ir(TsDPEN) Complex. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bea Václavíková Vilhanová
- Department of Organic Technology; University of Chemistry and Technology; Technická 5 CZ-166 28 Prague 6 Czech Republic
| | - Alena Budinská
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 CZ-166 10 Prague 6 Czech Republic
| | - Jiří Václavík
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 CZ-166 10 Prague 6 Czech Republic
- Laboratory of Molecular Structure Characterization; Institute of Microbiology; Czech Academy of Sciences; Vídeňská 1083 CZ-142 20 Prague 4 Czech Republic
| | - Václav Matoušek
- CF Plus Chemicals s.r.o.; Kamenice 771/34 625 00 Brno Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization; Institute of Microbiology; Czech Academy of Sciences; Vídeňská 1083 CZ-142 20 Prague 4 Czech Republic
| | - Libor Červený
- Department of Organic Technology; University of Chemistry and Technology; Technická 5 CZ-166 28 Prague 6 Czech Republic
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Pražienková V, Holubová M, Pelantová H, Bugáňová M, Pirník Z, Mikulášková B, Popelová A, Blechová M, Haluzík M, Železná B, Kuzma M, Kuneš J, Maletínská L. Impact of novel palmitoylated prolactin-releasing peptide analogs on metabolic changes in mice with diet-induced obesity. PLoS One 2017; 12:e0183449. [PMID: 28820912 PMCID: PMC5562305 DOI: 10.1371/journal.pone.0183449] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 08/06/2017] [Indexed: 01/07/2023] Open
Abstract
Analogs of anorexigenic neuropeptides, such as prolactin-releasing peptide (PrRP), have a potential as new anti-obesity drugs. In our previous study, palmitic acid attached to the N-terminus of PrRP enabled its central anorexigenic effects after peripheral administration. In this study, two linkers, γ-glutamic acid at Lys11 and a short, modified polyethylene glycol at the N-terminal Ser and/or Lys11, were applied for the palmitoylation of PrRP31 to improve its bioavailability. These analogs had a high affinity and activation ability to the PrRP receptor GPR10 and the neuropeptide FF2 receptor, as well as short-term anorexigenic effect similar to PrRP palmitoylated at the N-terminus. Two-week treatment with analogs that were palmitoylated through linkers to Lys11 (analogs 1 and 2), but not with analog modified both at the N-terminus and Lys11 (analog 3) decreased body and liver weights, insulin, leptin, triglyceride, cholesterol and free fatty acid plasma levels in a mouse model of diet-induced obesity. Moreover, the expression of uncoupling protein-1 was increased in brown fat suggesting an increase in energy expenditure. In addition, treatment with analogs 1 and 2 but not analog 3 significantly decreased urinary concentrations of 1-methylnicotinamide and its oxidation products N-methyl-2-pyridone-5-carboxamide and N-methyl-4-pyridone-3-carboxamide, as shown by NMR-based metabolomics. This observation confirmed the previously reported increase in nicotinamide derivatives in obesity and type 2 diabetes mellitus and the effectiveness of analogs 1 and 2 in the treatment of these disorders.
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Affiliation(s)
- Veronika Pražienková
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martina Holubová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martina Bugáňová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Zdenko Pirník
- Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic
- Department of Human and Clinical Pharmacology, University of Veterinary Medicine, Košice, Slovak Republic
| | - Barbora Mikulášková
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Andrea Popelová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Miroslava Blechová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics, Charles University in Prague and General University Hospital, Prague, Czech Republic
- Centre of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Diabetes Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- * E-mail:
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Kamenik Z, Kadlcik S, Gazak R, Vobruba S, Palanova L, Kuzma M, Janata J. Diversity of Alkylproline Moieties in Pyrrolobenzodiazepines Arises from Postcondensation Modifications of a Unified Building Block. ACS Chem Biol 2017; 12:1993-1998. [PMID: 28699733 DOI: 10.1021/acschembio.7b00335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Anticancer pyrrolobenzodiazepines (PBDs) are one of several groups of natural products that contain unusual 4-alkyl-l-proline derivatives (APDs) in their structure. APD moieties of PBDs are characterized by high structural diversity achieved through unknown biosynthetic machinery. Based on LC-MS analysis of culture broths, feeding experiments, and protein assays, we show that APDs are not incorporated into PBDs in their final form as was previously hypothesized. Instead, a uniform building block, 4-propylidene-l-proline or 4-ethylidene-l-proline, enters the condensation reaction. The subsequent postcondensation steps are initiated by the introduction of an additional double bond catalyzed by a FAD-dependent oxidoreductase, which we demonstrated with Orf7 from anthramycin biosynthesis. The resulting double bond arrangement presumably represents a prerequisite for further modifications of the APD moieties. Our study gives general insight into the diversification of APD moieties of natural PBDs and provides proof-of-principle for precursor directed and combinatorial biosynthesis of new PBD-based antitumor compounds.
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Affiliation(s)
- Zdenek Kamenik
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Stanislav Kadlcik
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Radek Gazak
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Simon Vobruba
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Lucie Palanova
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Jiri Janata
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
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Kurka O, Kučera L, Pelantová H, Kuzma M, Havlíček V, Bednář P. Semisynthesis and spectral characterization of 5-methylpyranopelargonidin and 4-methylfuropelargonidin and their separation and detection in strawberry fruit wine. J Chromatogr A 2017. [PMID: 28648259 DOI: 10.1016/j.chroma.2017.06.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Condensation of anthocyanins and their aglycons with small organic molecules yields more stable natural dyes, e.g. pyranoanthocyanins arising spontaneously in various food products. Reaction of pelargonidin with acetone produces two isomeric anthocyanidin dyes - 5-methylpyranopelargonidin and 4-methylfuropelargonidin. A robust semipreparative liquid chromatographic method was developed to isolate both derivatives from a simple aged solution of pelargonidin in methanol: acetone: 37% aqueous hydrochloric acid (1:1:0.008, v/v/v). Detailed interpretation of mass and nuclear magnetic resonance spectra allowed to assign structures of both dyes in isolated fractions. A fast UHPLC-MS method was optimized for the control of their production in the reaction mixture. Use of reversed stationary phase and acidic mobile phases in gradient mode allowed separation of both isomers in less than one minute. Fragmentation of both dyes after collision activated dissociation in collision cell was studied comprehensively and the observed processes were compared with data from quantum calculations (computational chemistry utilizing DFT methods). When comparing both isomers, retro-Diels-Alder fragmentation appears preferred in furo-derivative, while small losses (i.e. methane and water molecules) were more pronounced in pyrano-derivative. Both studied isomeric dyes were found in laboratory prepared strawberry fruit wine and their content was compared with major present anthocyanins and their derivatives.
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Affiliation(s)
- Ondřej Kurka
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Lukáš Kučera
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Vladimír Havlíček
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46, Olomouc, Czech Republic; Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Petr Bednář
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46, Olomouc, Czech Republic.
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Bugáňová M, Pelantová H, Holubová M, Šedivá B, Maletínská L, Železná B, Kuneš J, Kačer P, Kuzma M, Haluzík M. The effects of liraglutide in mice with diet-induced obesity studied by metabolomics. J Endocrinol 2017; 233:93-104. [PMID: 28138003 DOI: 10.1530/joe-16-0478] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 01/30/2017] [Indexed: 01/09/2023]
Abstract
Liraglutide is the glucagon-like peptide-1 receptor agonist widely used for the treatment of type 2 diabetes mellitus. Recently, it has been demonstrated to decrease cardiovascular morbidity and mortality in patients with type 2 diabetes and high cardiovascular risk. Although the major modes of liraglutide action are well-known, its detailed action at the metabolic level has not been studied. To this end, we explored the effect of 2-week liraglutide treatment in C57BL/6 male mice with obesity and diabetes induced by 13 weeks of high-fat diet using NMR spectroscopy to capture the changes in urine metabolic profile induced by the therapy. The liraglutide treatment decreased body and fat pads weight along with blood glucose and triglyceride levels. NMR spectroscopy identified 11 metabolites significantly affected by liraglutide treatment as compared to high-fat diet-fed control group. These metabolites included ones involved in nicotinamide adenine dinucleotide metabolism, β-oxidation of fatty acids and microbiome changes. Although majority of the metabolites changed after liraglutide treatment were similar as the ones previously identified after vildagliptin administration in a similar mouse model, the changes in creatinine, taurine and trigonelline were specific for liraglutide administration. The significance of these changes and its possible use in the personalization of antidiabetic therapy in humans requires further research.
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Affiliation(s)
- Martina Bugáňová
- Institute of MicrobiologyAcademy of Sciences of the Czech Republic, Prague, Czech Republic
- Faculty of Chemical TechnologyUniversity of Chemistry and Technology Prague, Prague, Czech Republic
| | - Helena Pelantová
- Institute of MicrobiologyAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martina Holubová
- Institute of Organic Chemistry and BiochemistryAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Blanka Šedivá
- Faculty of Applied SciencesUniversity of West Bohemia, Plzeň, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and BiochemistryAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and BiochemistryAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and BiochemistryAcademy of Sciences of the Czech Republic, Prague, Czech Republic
- Institute of PhysiologyAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Petr Kačer
- Institute of MicrobiologyAcademy of Sciences of the Czech Republic, Prague, Czech Republic
- Faculty of Chemical TechnologyUniversity of Chemistry and Technology Prague, Prague, Czech Republic
| | - Marek Kuzma
- Institute of MicrobiologyAcademy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martin Haluzík
- Centre for Experimental Medicine and Diabetes CentreInstitute for Clinical and Experimental Medicine, Prague, Czech Republic
- Institute of Medical Biochemistry and Laboratory Diagnostics1st Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Voráčová K, Hájek J, Mareš J, Urajová P, Kuzma M, Cheel J, Villunger A, Kapuscik A, Bally M, Novák P, Kabeláč M, Krumschnabel G, Lukeš M, Voloshko L, Kopecký J, Hrouzek P. The cyanobacterial metabolite nocuolin a is a natural oxadiazine that triggers apoptosis in human cancer cells. PLoS One 2017; 12:e0172850. [PMID: 28253280 PMCID: PMC5333925 DOI: 10.1371/journal.pone.0172850] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 02/11/2017] [Indexed: 12/22/2022] Open
Abstract
Oxadiazines are heterocyclic compounds containing N-N-O or N-N-C-O system within a six membered ring. These structures have been up to now exclusively prepared via organic synthesis. Here, we report the discovery of a natural oxadiazine nocuolin A (NoA) that has a unique structure based on 1,2,3-oxadiazine. We have identified this compound in three independent cyanobacterial strains of genera Nostoc, Nodularia, and Anabaena and recognized the putative gene clusters for NoA biosynthesis in their genomes. Its structure was characterized using a combination of NMR, HRMS and FTIR methods. The compound was first isolated as a positive hit during screening for apoptotic inducers in crude cyanobacterial extracts. We demonstrated that NoA-induced cell death has attributes of caspase-dependent apoptosis. Moreover, NoA exhibits a potent anti-proliferative activity (0.7-4.5 μM) against several human cancer lines, with p53-mutated cell lines being even more sensitive. Since cancers bearing p53 mutations are resistant to several conventional anti-cancer drugs, NoA may offer a new scaffold for the development of drugs that have the potential to target tumor cells independent of their p53 status. As no analogous type of compound was previously described in the nature, NoA establishes a novel class of bioactive secondary metabolites.
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Affiliation(s)
- Kateřina Voráčová
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic
| | - Jan Hájek
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic
- Biology Centre (CAS) v.v.i., Institute of Hydrobiology, České Budějovice, Czech Republic
| | - Jan Mareš
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic
- Biology Centre (CAS) v.v.i., Institute of Hydrobiology, České Budějovice, Czech Republic
- Centre for Phycology, Institute of Botany (CAS) v.v.i., Czech Republic
| | - Petra Urajová
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
| | - Marek Kuzma
- Laboratory of Molecular Structure Characterization, Institute of Microbiology (CAS), Prague, Czech Republic
| | - José Cheel
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
| | - Andreas Villunger
- Medical University Innsbruck, Division of Developmental Immunology, Biocenter Innsbruck, Innsbruck, Austria
- Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Alexandra Kapuscik
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
| | - Marcel Bally
- British Columbia Cancer Agency, Department of Experimental Therapeutics, Vancouver, BC Canada
| | - Petr Novák
- Laboratory of Molecular Structure Characterization, Institute of Microbiology (CAS), Prague, Czech Republic
| | - Martin Kabeláč
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic
| | - Gerhard Krumschnabel
- Medical University Innsbruck, Division of Developmental Immunology, Biocenter Innsbruck, Innsbruck, Austria
| | - Martin Lukeš
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
| | | | - Jiří Kopecký
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
| | - Pavel Hrouzek
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences (CAS) v.v.i., Třeboň, Czech Republic
- University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic
- * E-mail:
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Vavříková E, Křen V, Jezova-Kalachova L, Biler M, Chantemargue B, Pyszková M, Riva S, Kuzma M, Valentová K, Ulrichová J, Vrba J, Trouillas P, Vacek J. Novel flavonolignan hybrid antioxidants: From enzymatic preparation to molecular rationalization. Eur J Med Chem 2017; 127:263-274. [DOI: 10.1016/j.ejmech.2016.12.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 12/02/2016] [Accepted: 12/24/2016] [Indexed: 01/24/2023]
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Roubalová L, Biedermann D, Papoušková B, Vacek J, Kuzma M, Křen V, Ulrichová J, Dinkova-Kostova AT, Vrba J. Semisynthetic flavonoid 7-O-galloylquercetin activates Nrf2 and induces Nrf2-dependent gene expression in RAW264.7 and Hepa1c1c7 cells. Chem Biol Interact 2016; 260:58-66. [PMID: 27777014 PMCID: PMC5148792 DOI: 10.1016/j.cbi.2016.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 10/06/2016] [Accepted: 10/19/2016] [Indexed: 01/06/2023]
Abstract
The natural flavonoid quercetin is known to activate the transcription factor Nrf2, which regulates the expression of cytoprotective enzymes such as heme oxygenase-1 (HO-1) and NAD(P)H:quinone oxidoreductase 1 (NQO1). In this study, a novel semisynthetic flavonoid 7-O-galloylquercetin (or quercetin-7-gallate, 3) was prepared by direct galloylation of quercetin, and its effect on the Nrf2 pathway was examined. A luciferase reporter assay showed that 7-O-galloylquercetin, like quercetin, significantly activated transcription via the antioxidant response element in a stably transfected human AREc32 reporter cell line. In addition, 7-O-galloylquercetin caused the accumulation of Nrf2 and induced the expression of HO-1 at both the mRNA and protein levels in murine macrophage RAW264.7 cells. The induction of HO-1 by 7-O-galloylquercetin was significantly suppressed by N-acetyl-l-cysteine and SB203580, indicating the involvement of reactive oxygen species and p38 mitogen-activated protein kinase activity, respectively. HPLC/MS analyses also showed that 7-O-galloylquercetin was not degalloylated to quercetin, but it was conjugated with glucuronic acid and/or methylated in RAW264.7 cells. Furthermore, 7-O-galloylquercetin was found to increase the protein levels of Nrf2 and HO-1, and also the activity of NQO1 in murine hepatoma Hepa1c1c7 cells. Taken together, we conclude that 7-O-galloylquercetin increases Nrf2 activity and induces Nrf2-dependent gene expression in RAW264.7 and Hepa1c1c7 cells.
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Affiliation(s)
- Lenka Roubalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - David Biedermann
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Barbora Papoušková
- Regional Centre of Advanced Technologies and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, Olomouc 77146, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, Prague 14220, Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee DD1 9SY, Scotland, UK
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc 77515, Czech Republic.
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Biedermann D, Buchta M, Holečková V, Sedlák D, Valentová K, Cvačka J, Bednárová L, Křenková A, Kuzma M, Škuta C, Peikerová Ž, Bartůněk P, Křen V. Silychristin: Skeletal Alterations and Biological Activities. J Nat Prod 2016; 79:3086-3092. [PMID: 28006905 DOI: 10.1021/acs.jnatprod.6b00750] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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
Silychristin is the second most abundant flavonolignan (after silybin) present in the fruits of Silybum marianum. A group of compounds containing silychristin (3) and its derivatives such as 2,3-dehydrosilychristin (4), 2,3-dehydroanhydrosilychristin (5), anhydrosilychristin (6), silyhermin (7), and isosilychristin (8) were studied. Physicochemical data of these compounds acquired at high resolution were compared. The absolute configuration of silyhermin (7) was proposed to be identical to silychristin A (3a) in ring D (10R,11S). The preparation of 2,3-dehydrosilychristin (4) was optimized. The Folin-Ciocalteau reduction and DPPH and ABTS radical scavenging assays revealed silychristin and its analogues to be powerful antioxidants, which were found to be more potent than silybin and 2,3-dehydrosilybin. Compounds 4-6 exhibited inhibition of microsomal lipoperoxidation (IC50 4-6 μM). Moreover, compounds 4-8 were found to be almost noncytotoxic for 10 human cell lines of different histogenetic origins. On the basis of these results, compounds 3-6 are likely responsible for most of the antioxidant properties of silymarin attributed traditionally to silybin (silibinin).
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Affiliation(s)
- David Biedermann
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - Martin Buchta
- Stolařská 601/4 , CZ 747 14 Ludgeřovice, Czech Republic
| | - Veronika Holečková
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - David Sedlák
- CZ-OPENSCREEN: National Infrastructure for Chemical Biology, Institute of Molecular Genetics, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Praha 4, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo náměstí 2, CZ 166 10 Prague, Czech Republic
| | - Lucie Bednárová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo náměstí 2, CZ 166 10 Prague, Czech Republic
| | - Alena Křenková
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
| | - Ctibor Škuta
- CZ-OPENSCREEN: National Infrastructure for Chemical Biology, Institute of Molecular Genetics, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Praha 4, Czech Republic
| | - Žaneta Peikerová
- CZ-OPENSCREEN: National Infrastructure for Chemical Biology, Institute of Molecular Genetics, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Praha 4, Czech Republic
| | - Petr Bartůněk
- CZ-OPENSCREEN: National Infrastructure for Chemical Biology, Institute of Molecular Genetics, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Praha 4, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences , Vídeňská 1083, CZ 142 20 Prague, Czech Republic
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Cheel J, Urajová P, Hájek J, Hrouzek P, Kuzma M, Bouju E, Faure K, Kopecký J. Separation of cyclic lipopeptide puwainaphycins from cyanobacteria by countercurrent chromatography combined with polymeric resins and HPLC. Anal Bioanal Chem 2016; 409:917-930. [DOI: 10.1007/s00216-016-0066-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 09/28/2016] [Accepted: 10/28/2016] [Indexed: 11/30/2022]
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Pelantová H, Bugáňová M, Holubová M, Šedivá B, Zemenová J, Sýkora D, Kaválková P, Haluzík M, Železná B, Maletínská L, Kuneš J, Kuzma M. Urinary metabolomic profiling in mice with diet-induced obesity and type 2 diabetes mellitus after treatment with metformin, vildagliptin and their combination. Mol Cell Endocrinol 2016; 431:88-100. [PMID: 27164444 DOI: 10.1016/j.mce.2016.05.003] [Citation(s) in RCA: 29] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 04/15/2016] [Accepted: 05/05/2016] [Indexed: 01/06/2023]
Abstract
Metformin, vildagliptin and their combination are widely used for the treatment of diabetes, but little is known about the metabolic responses to these treatments. In the present study, NMR-based metabolomics was applied to detect changes in the urinary metabolomic profile of a mouse model of diet-induced obesity in response to these treatments. Additionally, standard biochemical parameters and the expression of enzymes involved in glucose and fat metabolism were monitored. Significant correlations were observed between several metabolites (e.g., N-carbamoyl-β-alanine, N1-methyl-4-pyridone-3-carboxamide, N1-methyl-2-pyridone-5-carboxamide, glucose, 3-indoxyl sulfate, dimethylglycine and several acylglycines) and the area under the curve of glucose concentrations during the oral glucose tolerance test. The present study is the first to present N-carbamoyl-β-alanine as a potential marker of type 2 diabetes mellitus and consequently to demonstrate the efficacies of the applied antidiabetic interventions. Moreover, the elevated acetate level observed after vildagliptin administration might reflect increased fatty acid oxidation.
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Affiliation(s)
- Helena Pelantová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague 4, Czech Republic; Department of Analytical Chemistry, Faculty of Science, Palacký University, 17 listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Martina Bugáňová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague 4, Czech Republic; Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Martina Holubová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Blanka Šedivá
- Faculty of Applied Sciences, University of West Bohemia, Univerzitní 8, 306 14, Plzeň, Czech Republic
| | - Jana Zemenová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic; Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28, Prague 6, Czech Republic
| | - David Sýkora
- Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28, Prague 6, Czech Republic
| | - Petra Kaválková
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U nemocnice 1, 128 08, Prague 2, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University and General Faculty Hospital in Prague, U nemocnice 1, 128 08, Prague 2, Czech Republic; Institute of Endocrinology, Národní 8, 116 94, Prague 1, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Prague 6, Czech Republic; Institute of Physiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague 4, Czech Republic.
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Valis K, Grobarova V, Stodulkova E, Kuzma M, Kavan D, Kolarik M, Bartova S, Talacko P, Flieger M, Cerny J, Novak P. Quambalarine B halts proliferation and reprograms metabolism of leukemic cells. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61430-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Vavříková E, Langschwager F, Jezova-Kalachova L, Křenková A, Mikulová B, Kuzma M, Křen V, Valentová K. Isoquercitrin Esters with Mono- or Dicarboxylic Acids: Enzymatic Preparation and Properties. Int J Mol Sci 2016; 17:ijms17060899. [PMID: 27338349 PMCID: PMC4926433 DOI: 10.3390/ijms17060899] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 04/14/2016] [Revised: 05/25/2016] [Accepted: 05/30/2016] [Indexed: 12/20/2022] Open
Abstract
A series of isoquercitrin (quercetin-3-O-β-d-glucopyranoside) esters with mono- or dicarboxylic acids was designed to modulate hydro- and lipophilicity and biological properties. Esterification of isoquercitrin was accomplished by direct chemoenzymatic reaction using Novozym 435 (lipase from Candida antarctica), which accepted C₅- to C12-dicarboxylic acids; the shorter ones, such as oxalic (C₂), malonic (C₃), succinic (C₄) and maleic (C₄) acids were not substrates of the lipase. Lipophilicity of monocarboxylic acid derivatives, measured as log P, increased with the chain length. Esters with glutaric and adipic acids exhibited hydrophilicity, and the dodecanedioic acid hemiester was more lipophilic. All derivatives were less able to reduce Folin-Ciocalteau reagent (FCR) and scavenge DPPH (1,1-diphenyl-2-picrylhydrazyl) than isoquercitrin; ABTS (2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)) radical-scavenging activity was comparable. Dodecanoate and palmitate were the least active in FCR and ABTS scavenging; dodecanoate and hemiglutarate were the strongest DPPH scavengers. In contrast, most derivatives were much better inhibitors of microsomal lipoperoxidation than isoquercitrin; butyrate and hexanoate were the most efficient. Anti-lipoperoxidant activity of monocarboxylic derivatives, except acetates, decreased with increasing aliphatic chain. The opposite trend was noted for dicarboxylic acid hemiesters, isoquercitrin hemidodecanedioate being the most active. Overall, IQ butyrate, hexanoate and hemidodecanedioate are the most promising candidates for further studies.
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Affiliation(s)
- Eva Vavříková
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Fanny Langschwager
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
- Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3a, GE-18059 Rostock, Germany.
| | - Lubica Jezova-Kalachova
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Alena Křenková
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Barbora Mikulová
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Marek Kuzma
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Vladimír Křen
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - Kateřina Valentová
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
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Karas D, Gažák R, Valentová K, Chambers CS, Pivodová V, Biedermann D, Křenková A, Oborná I, Kuzma M, Cvačka J, Ulrichová J, Křen V. Effects of 2,3-Dehydrosilybin and Its Galloyl Ester and Methyl Ether Derivatives on Human Umbilical Vein Endothelial Cells. J Nat Prod 2016; 79:812-820. [PMID: 27015547 DOI: 10.1021/acs.jnatprod.5b00905] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effects in vitro of 2,3-dehydrosilybin and several galloyl esters and methyl ethers on the viability, proliferation, and migration of human umbilical vein endothelial cells (HUVECs) were evaluated. The monogalloyl esters were synthesized by a chemoselective esterification method or by Steglich esterification of suitably protected 2,3-dehydrosilybin (1) with protected gallic acid. 2,3-Dehydrosilybin (1) displayed more potent cytotoxic, antiproliferative, and antimigratory activities (IC50 12.0, 5.4, and 12.2 μM, respectively) than silybin. The methylated derivatives were less active, with the least potent being 3,7-di-O-methyl-2,3-dehydrosilybin (6). On the other hand, galloylation at C-7 OH and C-23 OH markedly increased the cytotoxicity and the effects on the proliferation and migration of HUVECs. The most active derivative was 7-O-galloyl-2,3-dehydrosilybin (13; IC50 value of 3.4, 1.6, and 4.7 μM in the cytotoxicity, inhibition of proliferation, and antimigratory assays, respectively). Overall, this preliminary structure-activity relationship study demonstrated the importance of a 2,3-double bond, a C-7 OH group, and a galloyl moiety in enhancing the activity of flavonolignans toward HUVECs.
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Affiliation(s)
| | - Radek Gažák
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Christopher S Chambers
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | | | - David Biedermann
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Alena Křenková
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Ivana Oborná
- Department of Obstetrics and Gynecology, Faculty of Medicine and Dentistry, Palacký University and University Hospital , I.P. Pavlova 6, CZ-775 20 Olomouc, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2, CZ-16610 Prague 6, Czech Republic
| | | | - Vladimír Křen
- Institute of Microbiology, Czech Academy of Sciences , Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
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48
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Jiraskova P, Gazak R, Kamenik Z, Steiningerova L, Najmanova L, Kadlcik S, Novotna J, Kuzma M, Janata J. New Concept of the Biosynthesis of 4-Alkyl-L-Proline Precursors of Lincomycin, Hormaomycin, and Pyrrolobenzodiazepines: Could a γ-Glutamyltransferase Cleave the C-C Bond? Front Microbiol 2016; 7:276. [PMID: 27014201 PMCID: PMC4780272 DOI: 10.3389/fmicb.2016.00276] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/19/2016] [Indexed: 11/18/2022] Open
Abstract
Structurally different and functionally diverse natural compounds – antitumour agents pyrrolo[1,4]benzodiazepines, bacterial hormone hormaomycin, and lincosamide antibiotic lincomycin – share a common building unit, 4-alkyl-L-proline derivative (APD). APDs arise from L-tyrosine through a special biosynthetic pathway. Its generally accepted scheme, however, did not comply with current state of knowledge. Based on gene inactivation experiments and in vitro functional tests with recombinant enzymes, we designed a new APD biosynthetic scheme for the model of lincomycin biosynthesis. In the new scheme at least one characteristic in each of five final biosynthetic steps has been changed: the order of reactions, assignment of enzymes and/or reaction mechanisms. First, we demonstrate that LmbW methylates a different substrate than previously assumed. Second, we propose a unique reaction mechanism for the next step, in which a putative γ-glutamyltransferase LmbA indirectly cleaves off the oxalyl residue by transient attachment of glutamate to LmbW product. This unprecedented mechanism would represent the first example of the C–C bond cleavage catalyzed by a γ-glutamyltransferase, i.e., an enzyme that appears unsuitable for such activity. Finally, the inactivation experiments show that LmbX is an isomerase indicating that it transforms its substrate into a compound suitable for reduction by LmbY, thereby facilitating its subsequent complete conversion to APD 4-propyl-L-proline. Elucidation of the APD biosynthesis has long time resisted mainly due to the apparent absence of relevant C–C bond cleaving enzymatic activity. Our proposal aims to unblock this situation not only for lincomycin biosynthesis, but generally for all above mentioned groups of bioactive natural products with biotechnological potential.
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Affiliation(s)
- Petra Jiraskova
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Radek Gazak
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Zdenek Kamenik
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Lucie Steiningerova
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Lucie Najmanova
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Stanislav Kadlcik
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Jitka Novotna
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
| | - Jiri Janata
- Institute of Microbiology - Academy of Sciences of the Czech Republic Prague, Czech Republic
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49
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Vilhanová B, Václavík J, Šot P, Pecháček J, Zápal J, Pažout R, Maixner J, Kuzma M, Kačer P. Enantioselective hydrogenation of cyclic imines catalysed by Noyori–Ikariya half-sandwich complexes and their analogues. Chem Commun (Camb) 2016; 52:362-5. [DOI: 10.1039/c5cc06712j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trifluoroacetic acid activates cyclic imines in a new non-air sensitive asymmetric hydrogenation method. New transfer hydrogenation catalysts are demonstrated.
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Affiliation(s)
- B. Vilhanová
- Department of Organic Technology
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
| | - J. Václavík
- Institute of Organic Chemistry and Biochemistry
- v.v.i
- Academy of Sciences of the Czech Republic
- CZ-166 10 Prague
- Czech Republic
| | - P. Šot
- Department of Organic Technology
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
| | - J. Pecháček
- Department of Organic Technology
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
| | - J. Zápal
- Laboratory of Molecular Structure Characterization
- Institute of Microbiology
- v.v.i
- Academy of Sciences of the Czech Republic
- CZ-142 20 Prague
| | - R. Pažout
- Central Laboratories
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
| | - J. Maixner
- Central Laboratories
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
| | - M. Kuzma
- Laboratory of Molecular Structure Characterization
- Institute of Microbiology
- v.v.i
- Academy of Sciences of the Czech Republic
- CZ-142 20 Prague
| | - P. Kačer
- Department of Organic Technology
- University of Chemistry and Technology
- CZ-166 28 Prague
- Czech Republic
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50
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Pyszková M, Biler M, Biedermann D, Valentová K, Kuzma M, Vrba J, Ulrichová J, Sokolová R, Mojović M, Popović-Bijelić A, Kubala M, Trouillas P, Křen V, Vacek J. Flavonolignan 2,3-dehydroderivatives: Preparation, antiradical and cytoprotective activity. Free Radic Biol Med 2016; 90:114-25. [PMID: 26582372 DOI: 10.1016/j.freeradbiomed.2015.11.014] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/09/2015] [Accepted: 11/10/2015] [Indexed: 10/22/2022]
Abstract
The protective constituents of silymarin, an extract from Silybum marianum fruits, have been extensively studied in terms of their antioxidant and hepatoprotective activities. Here, we explore the electron-donor properties of the major silymarin flavonolignans. Silybin (SB), silychristin (SCH), silydianin (SD) and their respective 2,3-dehydroderivatives (DHSB, DHSCH and DHSD) were oxidized electrochemically and their antiradical/antioxidant properties were investigated. Namely, Folin-Ciocalteau reduction, DPPH and ABTS(+) radical scavenging, inhibition of microsomal lipid peroxidation and cytoprotective effects against tert-butyl hydroperoxide-induced damage to a human hepatocellular carcinoma HepG2 cell line were evaluated. Due to the presence of the highly reactive C3-OH group and the C-2,3 double bond (ring C) allowing electron delocalization across the whole structure in the 2,3-dehydroderivatives, these compounds are much more easily oxidized than the corresponding flavonolignans SB, SCH and SD. This finding was unequivocally confirmed not only by experimental approaches, but also by density functional theory (DFT) calculations. The hierarchy in terms of ability to undergo electrochemical oxidation (DHSCH~DHSD>DHSB>>SCH/SD>SB) was consistent with their antiradical activities, mainly DPPH scavenging, as well as in vitro cytoprotection of HepG2 cells. The results are discussed in the context of the antioxidant vs. prooxidant activities of flavonolignans and molecular interactions in complex biological systems.
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Affiliation(s)
- Michaela Pyszková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Michal Biler
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic; INSERM UMR 850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - David Biedermann
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Romana Sokolová
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Miloš Mojović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Ana Popović-Bijelić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Martin Kubala
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, 87025 Limoges, France; Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic.
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