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Bygd MD, Aukema KG, Richman JE, Wackett LP. Unexpected Mechanism of Biodegradation and Defluorination of 2,2-Difluoro-1,3-Benzodioxole by Pseudomonas putida F1. mBio 2021; 12:e0300121. [PMID: 34781746 PMCID: PMC8593668 DOI: 10.1128/mbio.03001-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/11/2022] Open
Abstract
Perfluorinated carbon atoms in a diether linkage are common in commercial anesthetics, drugs, fungicides, and insecticides. An important chemical group comprising perfluorodiethers is the 2,2-fluoro-1,3-benzodioxole (DFBD) moiety. The fluorine atoms stabilize the molecule by mitigating against metabolism by humans and microbes, as used in drugs and pesticides, respectively. Pseudomonas putida F1 catalyzed defluorination of DFBD at an initial rate of 2,100 nmol/h per mg cellular protein. This is orders of magnitude higher than previously reported microbial defluorination rates with multiply fluorinated carbon atoms. Defluorination rates declined after several hours, and the medium darkened. Significant defluorination activity was observed with cells grown on toluene but not l-arginine. Defluorination required only toluene dioxygenase. Pseudomonas and recombinant Escherichia coli cells expressing toluene dioxygenase oxidized DFBD to DFBD-4,5-dihydrodiol. The dihydrodiol could be oxidized to 4,5-dihydroxy-DFBD via the dihydrodiol dehydrogenase from P. putida F1. The dihydrodiol dehydrated with acid to yield a mixture of 4-hydroxy-DFBD and 5-hydroxy-DFBD. All those metabolites retained the difluoromethylene group; no fluoride or dark color was observed. The major route of DFBD-4,5-dihydrodiol decomposition produced fluoride and 1,2,3-trihydroxybenzene, or pyrogallol, and that was shown to be the source of the dark colors in the medium. A mechanism for DFBD-4,5-dihydrodiol transformation to two fluoride ions and pyrogallol is proposed. The Pseudomonas genome database and other databases revealed hundreds of bacteria with enzymes sharing high amino acid sequence identity to toluene dioxygenase from P. putida F1, suggesting the mechanism revealed here may apply to the defluorination of DFBD-containing compounds in the environment. IMPORTANCE There are more than 9,000 polyfluorinated compounds developed for commercial use, some negatively impacting human health, and they are generally considered to be resistant to biodegradation. Only a limited number of studies have identified microbes with enzymes sufficiently reactive to defluorinate difluoromethylene carbon groups. The present study examined one important group of commercial fluorinated chemicals and showed its rapid defluorination by a bacterium and its key enzyme, a Rieske dioxygenase. Rieske dioxygenases are common in environmental bacteria, and those closely resembling toluene dioxygenase from Pseudomonas putida F1 are candidates for biodegradative defluorination of the common 2,2-fluoro-1,3-benzodioxole (DFBD) moiety.
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Affiliation(s)
- Madison D. Bygd
- Microbial Engineering, University of Minnesota, St. Paul, Minnesota, USA
| | - Kelly G. Aukema
- Biochemistry, Molecular Biology and Biophysics, University of Minnesota, St. Paul, Minnesota, USA
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota, USA
| | - Jack E. Richman
- Biochemistry, Molecular Biology and Biophysics, University of Minnesota, St. Paul, Minnesota, USA
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota, USA
| | - Lawrence P. Wackett
- Biochemistry, Molecular Biology and Biophysics, University of Minnesota, St. Paul, Minnesota, USA
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota, USA
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2
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Andargie M, Vinas M, Rathgeb A, Möller E, Karlovsky P. Lignans of Sesame ( Sesamum indicum L.): A Comprehensive Review. Molecules 2021; 26:883. [PMID: 33562414 PMCID: PMC7914952 DOI: 10.3390/molecules26040883] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [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: 01/13/2021] [Revised: 01/31/2021] [Accepted: 02/02/2021] [Indexed: 12/14/2022] Open
Abstract
Major lignans of sesame sesamin and sesamolin are benzodioxol--substituted furofurans. Sesamol, sesaminol, its epimers, and episesamin are transformation products found in processed products. Synthetic routes to all lignans are known but only sesamol is synthesized industrially. Biosynthesis of furofuran lignans begins with the dimerization of coniferyl alcohol, followed by the formation of dioxoles, oxidation, and glycosylation. Most genes of the lignan pathway in sesame have been identified but the inheritance of lignan content is poorly understood. Health-promoting properties make lignans attractive components of functional food. Lignans enhance the efficiency of insecticides and possess antifeedant activity, but their biological function in plants remains hypothetical. In this work, extensive literature including historical texts is reviewed, controversial issues are critically examined, and errors perpetuated in literature are corrected. The following aspects are covered: chemical properties and transformations of lignans; analysis, purification, and total synthesis; occurrence in Seseamum indicum and related plants; biosynthesis and genetics; biological activities; health-promoting properties; and biological functions. Finally, the improvement of lignan content in sesame seeds by breeding and biotechnology and the potential of hairy roots for manufacturing lignans in vitro are outlined.
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Affiliation(s)
- Mebeaselassie Andargie
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, 37073 Goettingen, Germany; (A.R.); (E.M.)
| | - Maria Vinas
- Centro para Investigaciones en Granos y Semillas (CIGRAS), University of Costa Rica, 2060 San Jose, Costa Rica;
| | - Anna Rathgeb
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, 37073 Goettingen, Germany; (A.R.); (E.M.)
| | - Evelyn Möller
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, 37073 Goettingen, Germany; (A.R.); (E.M.)
| | - Petr Karlovsky
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, 37073 Goettingen, Germany; (A.R.); (E.M.)
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3
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Kodchakorn K, Poovorawan Y, Suwannakarn K, Kongtawelert P. Molecular modelling investigation for drugs and nutraceuticals against protease of SARS-CoV-2. J Mol Graph Model 2020; 101:107717. [PMID: 32861974 PMCID: PMC7434411 DOI: 10.1016/j.jmgm.2020.107717] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/14/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022]
Abstract
The widespread problem of a 2019-novel coronavirus (SARS-CoV-2) strain outbreak in Wuhan, China has prompted a search for new drugs to protect against and treat this disease. It is necessary to immediately investigate this due to the mutation of the viral genome and there being no current protective vaccines or therapeutic drugs. Molecular modelling and molecular docking based on in silico screening strategies were employed to determine the potential activities of seven HIV protease (HIV-PR) inhibitors, two flu drugs, and eight natural compounds. The computational approach was carried out to discover the structural modes with a high binding affinity for these drugs on the homology structure of the Wuhan coronavirus protease (SARS-CoV-2 PR). From the theoretical calculations, all the drugs and natural compounds demonstrated various favorable binding affinities. An interesting finding was that the natural compounds tested had a higher potential binding activity with the pocket sites of SARS-CoV-2 PR compared to the groups of HIV-PR inhibitors. The binding modes of each complex illustrated between the drugs and compounds interacted with the functional group of amino acids in the binding pocket via hydrophilic, hydrophobic, and hydrogen bond interactions using the molecular dynamics simulation technique. This result supports the idea that existing protease inhibitors and natural compounds could be used to treat the new coronavirus. This report sought to provide fundamental knowledge as preliminary experimental data to propose an existing nutraceutical material against viral infection. Collectively, it is suggested that molecular modelling and molecular docking are suitable tools to search and screen for new drugs and natural compounds that can be used as future treatments for viral diseases.
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Affiliation(s)
- Kanchanok Kodchakorn
- Thailand Excellence Center for Tissue Engineering and Stem Cells, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Yong Poovorawan
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Kamol Suwannakarn
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand.
| | - Prachya Kongtawelert
- Thailand Excellence Center for Tissue Engineering and Stem Cells, Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
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Harada E, Murata J, Ono E, Toyonaga H, Shiraishi A, Hideshima K, Yamamoto MP, Horikawa M. (+)-Sesamin-oxidising CYP92B14 shapes specialised lignan metabolism in sesame. Plant J 2020; 104:1117-1128. [PMID: 32955771 PMCID: PMC7756453 DOI: 10.1111/tpj.14989] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/30/2020] [Accepted: 08/13/2020] [Indexed: 05/14/2023]
Abstract
Sesamum spp. (sesame) are known to accumulate a variety of lignans in a lineage-specific manner. In cultivated sesame (Sesamum indicum), (+)-sesamin, (+)-sesamolin and (+)-sesaminol triglucoside are the three major lignans found richly in the seeds. A recent study demonstrated that SiCYP92B14 is a pivotal enzyme that allocates the substrate (+)-sesamin to two products, (+)-sesamolin and (+)-sesaminol, through multiple reaction schemes including oxidative rearrangement of α-oxy-substituted aryl groups (ORA). In contrast, it remains unclear whether (+)-sesamin in wild sesame undergoes oxidation reactions as in S. indicum and how, if at all, the ratio of the co-products is tailored at the molecular level. Here, we functionally characterised SrCYP92B14 as a SiCYP92B14 orthologue from a wild sesame, Sesamum radiatum, in which we revealed accumulation of the (+)-sesaminol derivatives (+)-sesangolin and its novel structural isomer (+)-7´-episesantalin. Intriguingly, SrCYP92B14 predominantly produced (+)-sesaminol either through ORA or direct oxidation on the aromatic ring, while a relatively low but detectable level of (+)-sesamolin was produced. Amino acid substitution analysis suggested that residues in the putative distal helix and the neighbouring heme propionate of CYP92B14 affect the ratios of its co-products. These data collectively show that the bimodal oxidation mechanism of (+)-sesamin might be widespread across Sesamum spp., and that CYP92B14 is likely to be a key enzyme in shaping the ratio of (+)-sesaminol- and (+)-sesamolin-derived lignans from the biochemical and evolutionary perspectives.
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Affiliation(s)
- Erisa Harada
- Suntory Foundation for Life Sciences (SUNBOR)Bioorganic Research Institute8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
| | - Jun Murata
- Suntory Foundation for Life Sciences (SUNBOR)Bioorganic Research Institute8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
| | - Eiichiro Ono
- Research InstituteSuntory Global Innovation Center Ltd (SIC)8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
| | - Hiromi Toyonaga
- Research InstituteSuntory Global Innovation Center Ltd (SIC)8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
| | - Akira Shiraishi
- Suntory Foundation for Life Sciences (SUNBOR)Bioorganic Research Institute8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
| | - Kosuke Hideshima
- Graduate School of Science and EngineeringUniversity of Toyama3190 GofukuToyama930‐8555Japan
| | - Masayuki P. Yamamoto
- Faculty of ScienceAcademic AssemblyUniversity of Toyama3190 GofukuToyama930‐8555Japan
| | - Manabu Horikawa
- Suntory Foundation for Life Sciences (SUNBOR)Bioorganic Research Institute8‐1‐1 Seikadai, SeikaSorakuKyoto619‐0284Japan
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Yang J, Wang Z, Lv G, Liu W, Wang Y, Sun X, Gao J. Indirect photodegradation of fludioxonil by hydroxyl radical and singlet oxygen in aquatic environment: Mechanism, photoproducts formation and eco-toxicity assessment. Ecotoxicol Environ Saf 2020; 197:110644. [PMID: 32325330 DOI: 10.1016/j.ecoenv.2020.110644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
Fludioxonil has been proven valuable as a broad-spectrum fungicide. However, there are concerns about its risk posed to non-target organisms in aquatic environments. In this paper, the mechanism, photoproducts transformation and eco-toxicity of fludioxonil during •OH/1O2-initiated process were systematically studied using quantum chemistry and computational toxicology. The results indicate that the two favorable pathways of •OH/1O2-initiated reactions are both occurred in pyrrole ring. It can conclude that the rate constants of •OH and 1O2 are 1.23 × 1010 and 3.69 × 107 M-1 s-1 at 298K, respectively, which results in half-lives of <2 days in surface waters under sunlit near-surface conditions. Based on toxicity assessments, these photoproducts showed a decreased aquatic toxicity but the majority products are still toxic. This study gives more insight into the chemical transformation mechanism of fludioxonil in aquatic environments.
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Affiliation(s)
- Jiaoxue Yang
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Zehua Wang
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Guochun Lv
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Wen Liu
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Yan Wang
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Xiaomin Sun
- Environment Research Institute, Shandong University, Qingdao, 266237, China.
| | - Jian Gao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
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6
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Tsai HY, Lee WJ, Chu IH, Hung WC, Su NW. Formation of Samin Diastereomers by Acid-Catalyzed Transformation of Sesamolin with Hydrogen Peroxide. J Agric Food Chem 2020; 68:6430-6438. [PMID: 32396352 DOI: 10.1021/acs.jafc.0c01616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 06/11/2023]
Abstract
The conversion of sesame lignans is of interest because the derived products may have potential applications. Here, in investigating the transformation of sesamin and sesamolin, main endogenous sesame lignans in sesame seeds, in both acidic aqueous and anhydrous systems, 7R,7'S-samin was identified as one of the major products of sesamolin in both systems catalyzed with common inorganic acids, but sesaminol was not generated. In investigating the effect of different oxidizing agents on the acid-catalyzed conversion of sesame lignans, 7R,7'S-samin was still the major product of sesamolin, whereas sesamolin as well as 7R,7'S-samin stereoselectively rendered 7R,7'R-samin in the presence of hydrogen peroxide. Hydrogen peroxide may play a role in stabilizing the transitional oxonium ions, derived from acid hydrolysis of sesamolin or 7R,7'S-samin by forming a seven-membered ring intermediate through hydrogen bonding, to consequently produce 7R,7'R-samin as the final product.
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Affiliation(s)
- Hsin-Ya Tsai
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Ju Lee
- School of Food Safety, Taipei Medical University, Taipei 11042, Taiwan
- Master Program in Food Safety, Taipei Medical University, Taipei 11042, Taiwan
| | - I-Hsuan Chu
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Ching Hung
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Nan-Wei Su
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan
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7
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Hansen T, Elferink H, van Hengst JMA, Houthuijs KJ, Remmerswaal WA, Kromm A, Berden G, van der Vorm S, Rijs AM, Overkleeft HS, Filippov DV, Rutjes FPJT, van der Marel GA, Martens J, Oomens J, Codée JDC, Boltje TJ. Characterization of glycosyl dioxolenium ions and their role in glycosylation reactions. Nat Commun 2020; 11:2664. [PMID: 32471982 PMCID: PMC7260182 DOI: 10.1038/s41467-020-16362-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [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: 12/31/2019] [Accepted: 04/22/2020] [Indexed: 12/28/2022] Open
Abstract
Controlling the chemical glycosylation reaction remains the major challenge in the synthesis of oligosaccharides. Though 1,2-trans glycosidic linkages can be installed using neighboring group participation, the construction of 1,2-cis linkages is difficult and has no general solution. Long-range participation (LRP) by distal acyl groups may steer the stereoselectivity, but contradictory results have been reported on the role and strength of this stereoelectronic effect. It has been exceedingly difficult to study the bridging dioxolenium ion intermediates because of their high reactivity and fleeting nature. Here we report an integrated approach, using infrared ion spectroscopy, DFT computations, and a systematic series of glycosylation reactions to probe these ions in detail. Our study reveals how distal acyl groups can play a decisive role in shaping the stereochemical outcome of a glycosylation reaction, and opens new avenues to exploit these species in the assembly of oligosaccharides and glycoconjugates to fuel biological research.
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Affiliation(s)
- Thomas Hansen
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Hidde Elferink
- Radboud University Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Jacob M A van Hengst
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Kas J Houthuijs
- Radboud University Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Wouter A Remmerswaal
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Alexandra Kromm
- Radboud University Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Giel Berden
- Radboud University Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7-c, 6525 ED, Nijmegen, The Netherlands
| | - Stefan van der Vorm
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Anouk M Rijs
- Radboud University Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7-c, 6525 ED, Nijmegen, The Netherlands
| | - Hermen S Overkleeft
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Dmitri V Filippov
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Floris P J T Rutjes
- Radboud University Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Gijsbert A van der Marel
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Jonathan Martens
- Radboud University Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7-c, 6525 ED, Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7-c, 6525 ED, Nijmegen, The Netherlands.
| | - Jeroen D C Codée
- Leiden University, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
| | - Thomas J Boltje
- Radboud University Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.
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Feng W, Zhou LY, Mu RF, Gao L, Xu BY, Liu ML, Niu LY, Wang XG. Screening and Identification of the Main Metabolites of Schisantherin a In Vivo and In Vitro by Using UHPLC-Q-TOF-MS/MS. Molecules 2020; 25:molecules25020258. [PMID: 31936367 PMCID: PMC7024306 DOI: 10.3390/molecules25020258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 12/10/2019] [Revised: 12/26/2019] [Accepted: 01/05/2020] [Indexed: 02/07/2023] Open
Abstract
Schisantherin A is an active ingredient originating from Schisandra chinensis (Turcz.) which has hepatoprotective and anti-oxidation activities. In this study, in vitro metabolisms investigated on rat liver microsomes (RLMs) and in vivo metabolisms explored on male Sprague Dawley rats of Schisantherin A were tested, respectively. The metabolites of Schisantherin A were identified using ultra-high-performance liquid chromatography coupled with hybrid triple quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS/MS). Based on the method, 60 metabolites were successfully identified and structurally characterized including 48 phase-I and 12 phase-II metabolites. Among the metabolites, 45 metabolites were reported for the first time. Moreover, 56 and eight metabolites were detected in urine and bile and 19 metabolites were identified in rats’ plasma. It demonstrated that hepatic and extra-hepatic metabolic pathways were both involved in Schisantherin A biotransformation in rats. Five in vitro metabolites were structurally characterized for the first time. The results indicated that the metabolic pathways mainly include oxidation, reduction, methylation, and conjugation with glucuronide, taurine, glucose, and glutathione groups. This study provides a practical strategy for rapidly screening and identifying metabolites, and the results provide basic data for future pharmacological and toxicology studies of Schisantherin A and other lignin ingredients.
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Affiliation(s)
| | | | | | | | | | | | - Li-Ying Niu
- Correspondence: (L.-Y.N.); (X.-G.W.); Tel.: +86-311-8992-6208 (L.-Y.N.)
| | - Xin-Guo Wang
- Correspondence: (L.-Y.N.); (X.-G.W.); Tel.: +86-311-8992-6208 (L.-Y.N.)
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9
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Wu D, Wang XP, Zhang W. Sesamolin exerts anti-proliferative and apoptotic effect on human colorectal cancer cells via inhibition of JAK2/STAT3 signaling pathway. Cell Mol Biol (Noisy-le-grand) 2019; 65:96-100. [PMID: 31472054] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/01/2019] [Accepted: 08/03/2019] [Indexed: 06/10/2023]
Abstract
Colorectal cancer (CRC) is a common malignant tumor that seriously threatens human health and quality of life. At present, the search for safe and more effective treatment for CRC has become necessary. The present study investigated the anti-proliferative and apoptotic effects of sesamolin on human colorectal cancer (HCT116) cells, and the underlying mechanism. Cell proliferation was determined using MTT assay, while the expressions of JAK2, STAT3 and p-STA3 were determined using Western blotting. The levels of expression of matrix metalloproteinases-1, 2 and 9 (MMP1, MMP2 and MMP9) were determined using real-time quantitative polymerase chain reaction (qRT-PCR). The degree of migration and invasion of the cells was assessed using wound healing assay. The results of MTT assay showed that sesamolin significantly and time- and dose-dependently inhibited the proliferation of HCT116 cells (p < 0.05). Treatment of HCT116 cells with sesamolin significantly inhibited their migratory ability (p < 0.05). The expressions of p-JAK2 and p-STAT3 were significantly down-regulated 48 h after 20 µM of JAK2 specific inhibitor (AG490) was added to HCT116 cells (p < 0.05). The expression of p-STAT3 was also significantly and dose-dependently down-regulated 6 h after treatment of HCT116 cells with sesamolin (p < 0.05). Sesamolin and AG490 had synergistic effect and their combination significantly down-regulated the expression of p-STAT3, when compared with sesamolin alone (p < 0.05). Treatment of HCT116 cells with sesamolin significantly and dose-dependently reduced the levels of IL-6-induced expressions of MMP-1, MMP-2 and MMP-9 (p < 0.05). These results suggest that sesamolin induces apoptosis in HCT116 cells and prevents cell invasion via inhibition of the JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Di Wu
- Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, China
| | - Xin-Ping Wang
- Department of General Surgery, GuangRen Hospital of Xi'an Jiaotong University, Xi'an No. 4 Hospital, Xi'an, Shaanxi 710004, China
| | - Wei Zhang
- Department of General Surgery, GuangRen Hospital of Xi'an Jiaotong University, Xi'an No. 4 Hospital, Xi'an, Shaanxi 710004, China
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Jiang W, Chen X, Liu F, Pan C. Residue Distribution, Dissipation Behavior, and Removal of Four Fungicide Residues on Harvested Apple after Waxing Treatment. J Agric Food Chem 2019; 67:2307-2312. [PMID: 30735378 DOI: 10.1021/acs.jafc.8b06254] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 06/09/2023]
Abstract
The residue distribution and dissipation of pyrimethanil, fludioxonil, cyprodinil, and kresoxim-methyl, which were introduced during postharvest waxing treatments of apples, were investigated. In addition, different residue removal methods were tested for the four fungicides in apples, and the removal efficiencies were compared. A multiresidue analytical method was developed based on quick, easy, cheap, effective, rugged, and safe method (QuEChERS) for the determination of the fungicide residues in apples. The dissipation study demonstrated that there was no significant change of fungicide residue magnitude during a 40-day storage process under ambient temperature. The fungicide residues in apples by wax treatment were shown to be very much stable. The results of residue distribution study demonstrated that waxing treatment may help to reduce the risk of pesticide when only the pulp was consumed. In the residue removal study, results suggested that higher temperature and the addition of acetic acid can improve the residue removal efficiency.
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Affiliation(s)
- Wenqing Jiang
- College of Science , China Agricultural University , Beijing 100193 , China
| | - Xiaochu Chen
- College of Science , China Agricultural University , Beijing 100193 , China
| | - Fengmao Liu
- College of Science , China Agricultural University , Beijing 100193 , China
| | - Canping Pan
- College of Science , China Agricultural University , Beijing 100193 , China
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11
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Nguyen TL, Duchon A, Manousopoulou A, Loaëc N, Villiers B, Pani G, Karatas M, Mechling AE, Harsan LA, Limanton E, Bazureau JP, Carreaux F, Garbis SD, Meijer L, Herault Y. Correction of cognitive deficits in mouse models of Down syndrome by a pharmacological inhibitor of DYRK1A. Dis Model Mech 2018; 11:dmm035634. [PMID: 30115750 PMCID: PMC6176987 DOI: 10.1242/dmm.035634] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/01/2018] [Indexed: 12/13/2022] Open
Abstract
Growing evidence supports the implication of DYRK1A in the development of cognitive deficits seen in Down syndrome (DS) and Alzheimer's disease (AD). We here demonstrate that pharmacological inhibition of brain DYRK1A is able to correct recognition memory deficits in three DS mouse models with increasing genetic complexity [Tg(Dyrk1a), Ts65Dn, Dp1Yey], all expressing an extra copy of Dyrk1a Overexpressed DYRK1A accumulates in the cytoplasm and at the synapse. Treatment of the three DS models with the pharmacological DYRK1A inhibitor leucettine L41 leads to normalization of DYRK1A activity and corrects the novel object cognitive impairment observed in these models. Brain functional magnetic resonance imaging reveals that this cognitive improvement is paralleled by functional connectivity remodelling of core brain areas involved in learning/memory processes. The impact of Dyrk1a trisomy and L41 treatment on brain phosphoproteins was investigated by a quantitative phosphoproteomics method, revealing the implication of synaptic (synapsin 1) and cytoskeletal components involved in synaptic response and axonal organization. These results encourage the development of DYRK1A inhibitors as drug candidates to treat cognitive deficits associated with DS and AD.
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Affiliation(s)
- Thu Lan Nguyen
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Arnaud Duchon
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
| | - Antigoni Manousopoulou
- Faculty of Medicine/Cancer Sciences & Clinical and Experimental Medicine, University of Southampton, Center for Proteomic Research, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Nadège Loaëc
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Benoît Villiers
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Guillaume Pani
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
| | - Meltem Karatas
- Laboratory of Engineering, Informatics and Imaging (ICube), Integrative multimodal imaging in healthcare (IMIS), UMR 7357, and University Hospital Strasbourg, Department of Biophysics and Nuclear Medicine, University of Strasbourg, 67400 Illkirch, France
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Anna E Mechling
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Laura-Adela Harsan
- Laboratory of Engineering, Informatics and Imaging (ICube), Integrative multimodal imaging in healthcare (IMIS), UMR 7357, and University Hospital Strasbourg, Department of Biophysics and Nuclear Medicine, University of Strasbourg, 67400 Illkirch, France
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Emmanuelle Limanton
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - Jean-Pierre Bazureau
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - François Carreaux
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - Spiros D Garbis
- Faculty of Medicine/Cancer Sciences & Clinical and Experimental Medicine, University of Southampton, Center for Proteomic Research, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Laurent Meijer
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Yann Herault
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
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12
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Api AM, Belsito D, Botelho D, Bruze M, Burton GA, Buschmann J, Dagli ML, Date M, Dekant W, Deodhar C, Francis M, Fryer AD, Jones L, Joshi K, La Cava S, Lapczynski A, Liebler DC, O'Brien D, Patel A, Penning TM, Ritacco G, Romine J, Sadekar N, Salvito D, Schultz TW, Sipes IG, Sullivan G, Thakkar Y, Tokura Y, Tsang S. RIFM fragrance ingredient safety assessment, 1,3-Benzodioxole-5-propanol, α-methyl-, 5-acetate, CAS Registry Number 68844-96-2. Food Chem Toxicol 2018; 118 Suppl 1:S170-S177. [PMID: 30146010 DOI: 10.1016/j.fct.2018.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/03/2018] [Indexed: 11/19/2022]
Affiliation(s)
- A M Api
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - D Belsito
- Member RIFM Expert Panel, Columbia University Medical Center, Department of Dermatology, 161 Fort Washington Ave., New York, NY, 10032, USA
| | - D Botelho
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - M Bruze
- Member RIFM Expert Panel, Malmo University Hospital, Department of Occupational & Environmental Dermatology, Sodra Forstadsgatan 101, Entrance 47, Malmo, SE-20502, Sweden
| | - G A Burton
- Member RIFM Expert Panel, School of Natural Resources & Environment, University of Michigan, Dana Building G110, 440 Church St., Ann Arbor, MI, 58109, USA
| | - J Buschmann
- Member RIFM Expert Panel, Fraunhofer Institute for Toxicology and Experimental Medicine, Nikolai-Fuchs-Strasse 1, 30625, Hannover, Germany
| | - M L Dagli
- Member RIFM Expert Panel, University of Sao Paulo, School of Veterinary Medicine and Animal Science, Department of Pathology, Av. Prof. dr. Orlando Marques de Paiva, 87, Sao Paulo, CEP 05508-900, Brazil
| | - M Date
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - W Dekant
- Member RIFM Expert Panel, University of Wuerzburg, Department of Toxicology, Versbacher Str. 9, 97078, Würzburg, Germany
| | - C Deodhar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - M Francis
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - A D Fryer
- Member RIFM Expert Panel, Oregon Health Science University, 3181 SW Sam Jackson Park Rd., Portland, OR, 97239, USA
| | - L Jones
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - K Joshi
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - S La Cava
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - A Lapczynski
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - D C Liebler
- Member RIFM Expert Panel, Vanderbilt University School of Medicine, Department of Biochemistry, Center in Molecular Toxicology, 638 Robinson Research Building, 2200 Pierce Avenue, Nashville, TN, 37232-0146, USA
| | - D O'Brien
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - A Patel
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - T M Penning
- Member of RIFM Expert Panel, University of Pennsylvania, Perelman School of Medicine, Center of Excellence in Environmental Toxicology, 1316 Biomedical Research Building (BRB) II/III, 421 Curie Boulevard, Philadelphia, PA, 19104-3083, USA
| | - G Ritacco
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - J Romine
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - N Sadekar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - D Salvito
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - T W Schultz
- Member RIFM Expert Panel, The University of Tennessee, College of Veterinary Medicine, Department of Comparative Medicine, 2407 River Dr., Knoxville, TN, 37996- 4500, USA
| | - I G Sipes
- Member RIFM Expert Panel, Department of Pharmacology, University of Arizona, College of Medicine, 1501 North Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA
| | - G Sullivan
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA.
| | - Y Thakkar
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
| | - Y Tokura
- Member RIFM Expert Panel, The Journal of Dermatological Science (JDS), Editor-in-Chief, Professor and Chairman, Department of Dermatology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan
| | - S Tsang
- Research Institute for Fragrance Materials, Inc., 50 Tice Boulevard, Woodcliff Lake, NJ, 07677 USA
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13
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Tanney JB, Renaud JB, Miller JD, McMullin DR. New 1,3-benzodioxin-4-ones from Synnemapestaloides ericacearum sp. nov., a biosynthetic link to remarkable compounds within the Xylariales. PLoS One 2018; 13:e0198321. [PMID: 29949590 PMCID: PMC6021072 DOI: 10.1371/journal.pone.0198321] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/12/2018] [Indexed: 01/06/2023] Open
Abstract
Surveys of foliar endophytes from the Acadian forest region over the past three decades have identified numerous phylogenetically diverse fungi producing natural products toxic to forest pests and diseases. The life histories of some conifer endophytes can be restricted to plant foliage or may include saprotrophic phases on other plants tissues or even alternate hosts. Considering the potentially broad host preferences of conifer endophytes we explored fungi isolated from understory species and their metabolites as part of an ongoing investigation of fungal biodiversity from the Acadian forest. We report a hitherto unidentified Xylariomycetidae species isolated from symptomatic Labrador tea (Rhododendron groenlandicum) leaves and mountain laurel (Kalmia latifolia) collected in coastal southern New Brunswick, Canada. Morphological and phylogenetic evidence demonstrated the unknown species was a novel Synnemapestaloides (Sporocadaceae) species, described here as Syn. ericacearum. A preliminary screening assay indicated that the culture filtrate extract of the new species was potently antifungal towards the biotrophic pathogen Microbotryum violaceum, warranting an investigation of its natural products. Two natural products possessing a rare 1,3-benzodioxin-4-one scaffold, synnemadoxins A-B (1-2), and their postulated precursor, synnemadiacid A (3), were characterized as new structures and assessed for antimicrobial activity. All isolated compounds elicited in vitro inhibitory antifungal activity towards M. violaceum at 2.3 μg mL-1 and moderate antibiotic activity. Further, the characterization of synnemadoxins A-B provided a perspective on the biosynthesis of some related 1,3-benzodioxin-4-ones produced by other fungi within the Xylariales.
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Affiliation(s)
- Joey B. Tanney
- Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Justin B. Renaud
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - J. David Miller
- Department of Chemistry, Carleton University, Ottawa, Ontario, Canada
| | - David R. McMullin
- Department of Chemistry, Carleton University, Ottawa, Ontario, Canada
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14
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Sang C, Ren W, Wang J, Xu H, Zhang Z, Zhou M, Chen C, Wang K. Detection and fitness comparison of target-based highly fludioxonil-resistant isolates of Botrytis cinerea from strawberry and cucumber in China. Pestic Biochem Physiol 2018; 147:110-118. [PMID: 29933980 DOI: 10.1016/j.pestbp.2018.01.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/04/2018] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Botrytis cinerea has a high risk of developing resistance to fungicides. Fludioxonil, belonging to phenylpyrroles, has been used for more than three decades, however, only few cases of field resistance against phenylpyrroles have been reported. In this study, the highly fludioxonil-resistant (HR) isolates of Botrytis cinerea were firstly detected in the commercial greenhouses of strawberry in China in 2015, and biochemical characterization differences in high fludioxonil-resistance from strawberry and cucumber were compared. All of the five HR isolates from greenhouses of strawberry and cucumber could grow on PDA amended with 100 μg/mL fludioxonil, and exhibited a positive correlation between the resistance of dicarboximide fungicides and fludioxonil. Sporulation and sclerotium production of the strawberry-originated HR isolates were increased in comparison with the cucumber-originated HR isolates. No matter how the HR isolates were from strawberry and cucumber, all the HR isolates showed enhanced sensitivity to the osmotic agents, but with significant difference. Based on sequence alignment of the BcOS1 which codes protein bound by fludioxonil, two genotypes of the strawberry-originated HR isolates were observed, i.e., (F127S + I365N + S426P) and (G538R + A1259T), which were totally different from those of the cucumber-originated HR isolates. Molecular docking of fludioxonil to the binding site of BcOS1 protein from the five HR isolates illustrated that all the HR isolates had less affinity than the sensitive isolates. Our data indicated that genotypes of the HR isolates match the corresponding fludioxonil-selection pressure on the field populations of B. cinerea in the commercial greenhouses of the two host plants.
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Affiliation(s)
- Chengwei Sang
- Nanjing Agricultural University, Nanjing 210095, China
| | - Weichao Ren
- Nanjing Agricultural University, Nanjing 210095, China
| | - Jiajie Wang
- Nanjing Agricultural University, Nanjing 210095, China
| | - Heng Xu
- Nanjing Agricultural University, Nanjing 210095, China
| | - Zhihui Zhang
- Nanjing Agricultural University, Nanjing 210095, China
| | - Mingguo Zhou
- Nanjing Agricultural University, Nanjing 210095, China
| | - Changjun Chen
- Nanjing Agricultural University, Nanjing 210095, China..
| | - Kai Wang
- Jiangsu Institute of Agricultural Science in Coastal Region, Yancheng 224000, China.
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15
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Abu-Lafi S, Makhamra S, Rayan I, Barriah W, Nasser A, Abu Farkh B, Rayan A. Sesamin from Cuscuta palaestina natural plant extracts: Directions for new prospective applications. PLoS One 2018; 13:e0195707. [PMID: 29634770 PMCID: PMC5892908 DOI: 10.1371/journal.pone.0195707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 11/29/2017] [Accepted: 03/28/2018] [Indexed: 02/07/2023] Open
Abstract
The aim of this study is to disclose the potential bioactive components of Cuscuta palaestina, a native parasitic natural plant of flora palaestina and to open direction towards new prospective application. GC-MS analysis identified 18 components in the methanolic extract of C. palaestina for the first time. The most appealing among them are Sesamin and two other phytosterols (Campesterol and Stigmasterol), all of which are documented in the scientific literature for their anticancer activity. Quantitation of Sesamin extracted from C. palaestina by HPLC-PDA with the use of three organic solvents showed that the Sesamin content in the methanolic extract was the highest. Following the disclosure of Sesamin presence in C. palaestina, we raised the question of whether it is produced naturally in C. palaestina or acquired from the host plant. The quantitation of Sesamin in C. palaestina was performed while being with five different host plants, and was compared with the amount of Sesamin in C. palaestina grown alone. The findings reveal that Sesamin is an endogenous secondary metabolite in C. palaestina. Thus, further studies are required to prove if C. palaestina can be used as an alternative source of anticancer phytochemicals, mainly Sesamin, and if proteins in the Sesamin production pathway could be valid biological targets for the development of novel and selective pesticides for control/ eradication of C. palaestina and maybe some other Cuscuta species. As well, the findings from this study raise a big question of whether inferring Sesamin production in C. palaestina could reduce its attack ability to host plants.
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Affiliation(s)
- Saleh Abu-Lafi
- Faculty of Pharmacy, Al-Quds University, Abu-Dies, Palestine
| | - Sadam Makhamra
- Chemistry Department, Faculty of Science and Technology, Al-Quds University, Abu-Dies, Palestine
| | - Ibrahim Rayan
- Institute of Applied Research—Galilee Society, Shefa-Amr, Israel
| | - Waseim Barriah
- Al-Qasemi College of Engineering & Science, Baka EL-Garbiah, Israel
| | - Ahmed Nasser
- The Interinstitutional Analytical Instrumentation Unit, the Volcani Center, ARO, Rishon LeZion, Israel
| | - Basheer Abu Farkh
- Drug Discovery Informatics Lab, QRC—Qasemi Research Center, Al-Qasemi Academic College, Baka El-Garbiah, Israel
| | - Anwar Rayan
- Institute of Applied Research—Galilee Society, Shefa-Amr, Israel
- Al-Qasemi College of Engineering & Science, Baka EL-Garbiah, Israel
- Drug Discovery Informatics Lab, QRC—Qasemi Research Center, Al-Qasemi Academic College, Baka El-Garbiah, Israel
- * E-mail:
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16
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Gong EC, Chea S, Balupuri A, Kang NS, Chin YW, Choi YH. Enzyme Kinetics and Molecular Docking Studies on Cytochrome 2B6, 2C19, 2E1, and 3A4 Activities by Sauchinone. Molecules 2018; 23:molecules23030555. [PMID: 29498658 PMCID: PMC6017976 DOI: 10.3390/molecules23030555] [Citation(s) in RCA: 11] [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: 02/08/2018] [Revised: 02/26/2018] [Accepted: 02/28/2018] [Indexed: 02/06/2023] Open
Abstract
Sauchinone, an active lignan isolated from the aerial parts of Saururus chinensis (Saururaceae), exhibits anti-inflammatory, anti-obesity, anti-hyperglycemic, and anti-hepatic steatosis effects. As herb–drug interaction (HDI) through cytochrome P450s (CYPs)-mediated metabolism limits clinical application of herbs and drugs in combination, this study sought to explore the enzyme kinetics of sauchinone towards CYP inhibition in in vitro human liver microsomes (HLMs) and in vivo mice studies and computational molecular docking analysis. In in vitro HLMs, sauchinone reversibly inhibited CYP2B6, 2C19, 2E1, and 3A4 activities in non-competitive modes, showing inhibition constant (Ki) values of 14.3, 16.8, 41.7, and 6.84 μM, respectively. Also, sauchinone time-dependently inhibited CYP2B6, 2E1 and 3A4 activities in vitro HLMs. Molecular docking study showed that sauchinone could be bound to a few key amino acid residues in the active site of CYP2B6, 2C19, 2E1, and 3A4. When sibutramine, clopidogrel, or chlorzoxazone was co-administered with sauchinone to mice, the systemic exposure of each drug was increased compared to that without sauchinone, because sauchinone reduced the metabolic clearance of each drug. In conclusion, when sauchinone was co-treated with drugs metabolized via CYP2B6, 2C19, 2E1, or 3A4, sauchinone–drug interactions occurred because sauchinone inhibited the CYP-mediated metabolic activities.
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Affiliation(s)
- Eun Chae Gong
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyeonggi-do 10326, Korea; (E.C.G.); (S.C.); (Y.-W.C.)
| | - Satya Chea
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyeonggi-do 10326, Korea; (E.C.G.); (S.C.); (Y.-W.C.)
| | - Anand Balupuri
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 305-764, Korea; (A.B.); (N.S.K)
| | - Nam Sook Kang
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 305-764, Korea; (A.B.); (N.S.K)
| | - Young-Won Chin
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyeonggi-do 10326, Korea; (E.C.G.); (S.C.); (Y.-W.C.)
| | - Young Hee Choi
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyeonggi-do 10326, Korea; (E.C.G.); (S.C.); (Y.-W.C.)
- Correspondence: ; Tel.: +82-31-961-5212
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17
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You BH, Gong EC, Choi YH. Inhibitory Effect of Sauchinone on UDP-Glucuronosyltransferase (UGT) 2B7 Activity. Molecules 2018; 23:molecules23020366. [PMID: 29425147 PMCID: PMC6017115 DOI: 10.3390/molecules23020366] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/05/2018] [Accepted: 02/07/2018] [Indexed: 01/03/2023] Open
Abstract
Herb-drug interaction (HDI) limits clinical application of herbs and drugs, and inhibition of herbs towards uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) has gained attention as one of the important reasons to cause HDIs. Sauchinone, an active lignan isolated from aerial parts of Saururus chinensis (Saururacease), possesses anti-oxidant, anti-inflammatory, and anti-viral activities. In pharmacokinetics of sauchinone, sauchinone is highly distributed to the liver, forming extensive metabolites of sauchinone via UGTs in the liver. Thus, we investigated whether sauchinone inhibited UGTs to explore potential of sauchinone-drug interactions. In human liver microsomes (HLMs), sauchinone inhibited activities of UGT1A1, 1A3, 1A6, and 2B7 with IC50 values of 8.83, 43.9, 0.758, and 0.279 μM, respectively. Sauchinone also noncompetitively inhibited UGT1A6 and 2B7 with Ki values of 1.08 and 0.524 μM, respectively. In in vivo interaction study using mice, sauchinone inhibited UGT2B7-mediated zidovudine metabolism, resulting in increased systemic exposure of zidovudine when sauchinone and zidovudine were co-administered together. Our results indicated that there is potential HDI between sauchinone and drugs undergoing UGT2B7-mediated metabolism, possibly contributing to the safe use of sauchinone and drug combinations.
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Affiliation(s)
- Byoung Hoon You
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyonggi-do 10326, Korea.
| | - Eun Chae Gong
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyonggi-do 10326, Korea.
| | - Young Hee Choi
- College of Pharmacy and Intergrated Research Institute for Drug Development, Dongguk University-Seoul, 32 Dongguk-lo, Ilsandong-gu, Goyang, Gyonggi-do 10326, Korea.
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18
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Zhai J, Zhang F, Gao S, Chen L, Feng G, Yin J, Chen W. Time- and NADPH-Dependent Inhibition on CYP3A by Gomisin A and the Pharmacokinetic Interactions between Gomisin A and Cyclophosphamide in Rats. Molecules 2017; 22:molecules22081298. [PMID: 28786954 PMCID: PMC6152024 DOI: 10.3390/molecules22081298] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 08/03/2017] [Indexed: 12/17/2022] Open
Abstract
The traditional Chinese medicine Schisandra chinensis has remarkable protective effects against chemical-induced toxicity. Cyclophosphamide (CTX), in spite advances in chemotherapy and immunosuppressive regimes, is prone to cause severe toxicity due to its chloroacetaldehyde (CAA) metabolite produced by CYP3A. Our previous study identified that S. chinensis extract (SCE) co-administration potently decreased CAA production and attenuated liver, kidney and brain injuries in CTX-treated rats. Gomisin A (Gom A) is proved to be one of the most abundant bioactive lignans in S. chinensis with a significant CYP3A inhibitory effect. To find out whether and how Gom A participated in the chemoprevention of SCE against CTX toxicity, the Gom A-caused CYP3A inhibition in vitro as well as the pharmacokinetic interactions between Gom A and CTX in vivo were examined in this study. Using human liver microsomes, a reversible inhibition assay revealed that Gom A was a competitive inhibitor with a KI value of 1.10 µM, and the time- and NADPH-dependent CYP3A inhibition of Gom A was observed in a time-dependent inhibition assay (KI = 0.35 µM, kinact = 1.96 min−1). Hepatic CYP3A mRNA expression experienced a significant increase in our rat model with Gom A administration. This explained why CAA production decreased in the 0.5 h- and 6 h-pretreatment rat groups while it increased in the 24 h- and 72 h-pretreatment groups, indicating a bidirectional effect of Gom A on CYP3A-mediated CTX metabolism. The present study suggested that Gom A participates like SCE in the pharmacokinetic intervention of CTX by blocking CYP3A-mediated metabolism and reducing CAA production, and thus plays an important role in the chemopreventive activity of S. chinensis against CTX toxicity, in addition to the previously recognized protective effects. Also, the combined use of S. chinensis preparation or other drugs containing Gom A as the main component with CTX needed to be addressed for better clinical intervention.
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Affiliation(s)
- Jianxiu Zhai
- School of Traditional Chinese Materia, Shenyang Pharmaceutical University, Shenyang 110016, China.
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
| | - Feng Zhang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
| | - Shouhong Gao
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
| | - Li Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
- Key Laboratory of Jiangxi Province for Research on Active Ingredients in Natural Medicines, Bioengineering Research Institute, Yichun University, Yichun 336000, China.
| | - Ge Feng
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
- Key Laboratory of Jiangxi Province for Research on Active Ingredients in Natural Medicines, Bioengineering Research Institute, Yichun University, Yichun 336000, China.
| | - Jun Yin
- School of Traditional Chinese Materia, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Wansheng Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China.
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19
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Yi JY, Kim HJ, Chung MS. Manufacture of low-benzo(a)pyrene sesame seed (Sesamum indicum L.) oil using a self-designed apparatus. PLoS One 2017; 12:e0173585. [PMID: 28278179 PMCID: PMC5344456 DOI: 10.1371/journal.pone.0173585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/22/2017] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to lower benzo(a)pyrene (BaP) contents in sesame seed oil (SSO) during manufacture by using a self-designed apparatus, to determine its optimal conditions, and to analyze antioxidants in SSO which might be related to BaP content reduction. Washing and spin-drying steps reduce exogenous BaP contamination, and the reduced moisture in seeds lowered BaP content in final SSO. A ventilation system in the roasting step inhibits BaP formation and reabsorption, followed by a controlled compression step. The optimal condition, a single washing cycle with 2-min spin-drying, 1350-rpm ventilation, and a single compression cycle, reduced the BaP content in SSO to 2.93 μg/kg, where the raw seeds had been spiked with 10-μg/kg BaP. Total phenolic contents showed a reversal pattern to the distribution of BaP contents. Sesamol and sesamolin were quantified by a high performance liquid chromatography-ultraviolet detector, and it was suggested that sesamol which is a strong antioxidant might have prevented BaP formation during the roasting step. This study enabled the commercial production of low-BaP SSO, and the data could be used in further investigations of the BaP content reduction mechanism with quantitative chemical analysis of the SSO composition.
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Affiliation(s)
- Ji Yoon Yi
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Hui Ju Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Myong-Soo Chung
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
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20
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Suzuki Y, Saito Y, Goto M, Newman DJ, O’Keefe BR, Lee KH, Nakagawa-Goto K. (-)-Neocaryachine, an Antiproliferative Pavine Alkaloid from Cryptocarya laevigata, Induces DNA Double-Strand Breaks. J Nat Prod 2017; 80:220-224. [PMID: 28099003 PMCID: PMC5516478 DOI: 10.1021/acs.jnatprod.6b01153] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Twelve benzylisoquinoline alkaloids, including pavine and phenanthroindolizidine types, were isolated from a MeOH/CH2Cl2 extract of Cryptocarya laevigata (stem bark) through bioactivity-guided fractionation for antitumor effects. Selected compounds were evaluated for antiproliferative activity against five human tumor cell lines, including a multidrug-resistant subline. Since more common 2,3,8,9-tetrasubstituted pavine alkaloids, such as crychine (3), exhibit very mild or no cytotoxicity, this compound type has not been well investigated for antitumor activity. Thus, this report is the first discovery of a 7-hydroxylated pavine alkaloid, (-)-neocaryachine (1), to demonstrate strong antiproliferative activity, with IC50 values of 0.06 to 0.41 μM against five tested tumor cell lines, including an MDR subline. Further mechanism of action studies revealed that 1 impacts the cellular S-phase by inducing DNA double-strand breaks.
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Affiliation(s)
- Yuki Suzuki
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Yohei Saito
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Masuo Goto
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7568, United States
| | - David J. Newman
- NIH Special Volunteer, Wayne, Pennsylvania 19087, United States
| | - Barry R. O’Keefe
- Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, NCI at Frederick, Frederick, Maryland 21702-1201, United States
- Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute, NCI at Frederick, Frederick, Maryland 21702-1201, United States
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7568, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7295, United States
- Chinese Medicine Research and Development Center, China Medical University and Hospital, 2 Yuh-Der Road, Taichung, 40447, Taiwan
| | - Kyoko Nakagawa-Goto
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, 920-1192, Japan
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7568, United States
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21
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Tidjane N, Gaboury L, Couture R. Cellular localisation of the kinin B1R in the pancreas of streptozotocin-treated rat and the anti-diabetic effect of the antagonist SSR240612. Biol Chem 2016; 397:323-36. [PMID: 26841446 DOI: 10.1515/hsz-2015-0230] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 01/28/2016] [Indexed: 11/15/2022]
Abstract
The mechanism by which kinin B1 receptor (B1R) contributes to type 1 diabetes is addressed by determining the impact of its inhibition on diabetes and on its pancreatic expression and cellular localisation on immunocompetent cells and primary sensory C-fibres. Rats were made diabetic with streptozotocin (STZ). On day 4, they were treated daily for 7 days with a B1R antagonist (SSR240612, 10 mg/kg) or its vehicle. The surviving β-cells were measured by immunostaining. The expression of B1R, iNOS, TNF-α, macrophages, TCD4+, CGRP and TRPV1 was measured by Western blotting, qRT-PCR and immunofluorescence. Macrophages and TCD4+ lymphocytes were absent in control, but distributed abundantly in the pancreas of STZ-diabetic rats. B1R was upregulated on these immune cells infiltrating the diabetic rat pancreas while it was not expressed on primary sensory C-fibres even if the expression of TRPV1 and CGRP was enhanced. SSR240612 prevented the infiltration of macrophages and TCD4+ lymphocytes and the upregulation of B1R, iNOS, TNF-α and TRPV1. SSR240612 corrected hyperglycaemia and hypoinsulinaemia by improving the Langerhans islets survival or regeneration. It is concluded that kinin B1R antagonism exerts anti-diabetic action by preventing the infiltration of immune cells in the pancreas and by preserving the integrity of Langerhans islets β-cells.
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22
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Wu Y, Shamoto-Nagai M, Maruyama W, Osawa T, Naoi M. Phytochemicals prevent mitochondrial membrane permeabilization and protect SH-SY5Y cells against apoptosis induced by PK11195, a ligand for outer membrane translocator protein. J Neural Transm (Vienna) 2016; 124:89-98. [PMID: 27640013 DOI: 10.1007/s00702-016-1624-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/09/2016] [Indexed: 02/07/2023]
Abstract
Epidemiological studies present the beneficial effects of dietary habits on prevention of aging-associated decline of brain function. Phytochemicals, the second metabolites of food, protect neuronal cells from cell death in cellular models of neurodegenerative disorders, and the neuroprotective activity has been ascribed to the anti-oxidant and anti-inflammatory functions. In this paper, the cellular mechanism of neuroprotection by phytochemicals was investigated, using the cellular model of mitochondrial apoptosis induced by PK11195, a ligand of outer membrane translocator protein, in SH-SY5Y cells. PK11195 induced mitochondrial membrane permeabilization with rapid transit production of superoxide (superoxide flashes) and calcium release from mitochondria, and activated apoptosis signal pathway. Study on the structure-activity relationship of astaxanthin, ferulic acid derivatives, and sesame lignans revealed that these phytochemicals inhibited mitochondrial membrane permeabilization and protected cells from apoptosis. Ferulic acid derivatives and sesame lignans inhibited or enhanced the mitochondrial pore formation and cell death by PK11195 according to their amphiphilic properties, not directly depending on the antioxidant activity. Regulation of pore formation at mitochondrial membrane is discussed as a novel mechanism behind neuroprotective activity of phytochemicals in aging and age-associated neurodegenerative disorders, and also behind dual functions of phytochemicals in neuronal and cancer cells.
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Affiliation(s)
- Yuqiu Wu
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nisshin, Aichi, 320-0195, Japan
| | - Masayo Shamoto-Nagai
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nisshin, Aichi, 320-0195, Japan
| | - Wakako Maruyama
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nisshin, Aichi, 320-0195, Japan
| | - Toshihiko Osawa
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nisshin, Aichi, 320-0195, Japan
| | - Makoto Naoi
- Department of Health and Nutrition, Faculty of Psychological and Physical Science, Aichi Gakuin University, 12 Araike, Iwasaki-cho, Nisshin, Aichi, 320-0195, Japan.
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23
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Walton JC. Synthetic Strategies for 5- and 6-Membered Ring Azaheterocycles Facilitated by Iminyl Radicals. Molecules 2016; 21:molecules21050660. [PMID: 27213311 PMCID: PMC6273063 DOI: 10.3390/molecules21050660] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [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: 04/05/2016] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 01/09/2023] Open
Abstract
The totality of chemical space is so immense that only a small fraction can ever be explored. Computational searching has indicated that bioactivity is associated with a comparatively small number of ring-containing structures. Pyrrole, indole, pyridine, quinoline, quinazoline and related 6-membered ring-containing aza-arenes figure prominently. This review focuses on the search for fast, efficient and environmentally friendly preparative methods for these rings with specific emphasis on iminyl radical-mediated procedures. Oxime derivatives, particularly oxime esters and oxime ethers, are attractive precursors for these radicals. Their use is described in conventional thermolytic, microwave-assisted and UV-vis based preparative procedures. Photoredox-catalyzed protocols involving designer oxime ethers are also covered. Choice can be made amongst these synthetic strategies for a wide variety of 5- and 6-membered ring heterocycles including phenanthridine and related aza-arenes. Applications to selected natural products and bioactive molecules, including trispheridine, vasconine, luotonin A and rutaecarpine, are included.
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Affiliation(s)
- John C Walton
- University of St. Andrews, EaStCHEM School of Chemistry, St. Andrews, Fife KY16 9ST, UK.
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24
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Zhang R, Yu Y, Deng J, Zhang C, Zhang J, Cheng Y, Luo X, Han B, Yang H. Sesamin Ameliorates High-Fat Diet-Induced Dyslipidemia and Kidney Injury by Reducing Oxidative Stress. Nutrients 2016; 8:nu8050276. [PMID: 27171111 PMCID: PMC4882689 DOI: 10.3390/nu8050276] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 04/26/2016] [Accepted: 05/04/2016] [Indexed: 01/26/2023] Open
Abstract
The study explored the protective effect of sesamin against lipid-induced renal injury and hyperlipidemia in a rat model. An animal model of hyperlipidemia was established in Sprague-Dawley rats. Fifty-five adult Sprague-Dawley rats were divided into five groups. The control group was fed a standard diet, while the other four groups were fed a high-fat diet for 5 weeks to induce hyperlipidemia. Three groups received oral sesamin in doses of 40, 80, or 160 mg/(kg·day). Seven weeks later, the blood lipids, renal function, antioxidant enzyme activities, and hyperoxide levels in kidney tissues were measured. The renal pathological changes and expression levels of collagen type IV (Col-IV) and α-smooth muscle actin (α-SMA) were analyzed. The administration of sesamin improved the serum total cholesterol, triglyceride, low-density lipoprotein cholesterol, apolipoprotein-B, oxidized-low-density lipoprotein, and serum creatinine levels in hyperlipidemic rats, while it increased the high-density lipoprotein cholesterol and apolipoprotein-A levels. Sesamin reduced the excretion of 24-h urinary protein and urinary albumin and downregulated α-SMA and Col-IV expression. Moreover, sesamin ameliorated the superoxide dismutase activity and reduced malondialdehyde levels in kidney tissue. Sesamin could mediate lipid metabolism and ameliorate renal injury caused by lipid metabolism disorders in a rat model of hyperlipidemia.
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Affiliation(s)
- Ruijuan Zhang
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Yan Yu
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Jianjun Deng
- Shaanxi Key laboratory of Degradable Biomedical Materials, Department of Food Science and Engineering, College of Chemical Engineering, Northwest University, Xi'an 710069, China.
| | - Chao Zhang
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Jinghua Zhang
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Yue Cheng
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Xiaoqin Luo
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Bei Han
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
| | - Haixia Yang
- Department of Nutrition and Food Safety, School of Public Health of Xi'an Jiao Tong University, Xi'an 710061, China.
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25
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Mikutis G, Mora CA, Puddu M, Paunescu D, Grass RN, Stark WJ. DNA-Based Sensor Particles Enable Measuring Light Intensity in Single Cells. Adv Mater 2016; 28:2765-2770. [PMID: 26866714 DOI: 10.1002/adma.201504892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 10/05/2015] [Revised: 12/04/2015] [Indexed: 06/05/2023]
Abstract
"Lab on a particle" architecture is employed in designing a light nanosensor. Light-sensitive protecting groups are installed on DNA, which is encapsulated in silica particles, qualifying as a self-sufficient light sensor. The nanosensors allow measuring light intensity and duration in very small volumes, such as single cells, and store the irradiation information until readout.
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Affiliation(s)
- Gediminas Mikutis
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Carlos A Mora
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Michela Puddu
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Daniela Paunescu
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Robert N Grass
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland
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26
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Chiu S, Wang T, Belski M, Abourashed EA. HPLC-Guided Isolation, Purification and Characterization of Phenylpropanoid and Phenolic Constituents of Nutmeg Kernel (Myristica fragrans). Nat Prod Commun 2016; 11:483-488. [PMID: 27396199 PMCID: PMC4943679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
Many studies on the biological activities of nutmeg continue to appear in the literature. The most common targets include GIT, CNS, oxidative stress and inflammation. However, results obtained from most studies are often inconsistent due to the variability of utilized samples, lack of standardized nutmeg products or insufficient amounts of pure compounds for comprehensive follow-up investigation. To address the consistency and supply issue we utilized available technology to develop a reproducible procedure for preparation of specific extracts and isolation of the major phenolic constituents present in nutmeg kemel. A well-defined and reproducible sequence of extraction, fractionation and chromatographic purification was adopted and was guided by HPLC fingerprinting. Spectroscopic methods, mainly NMR, and mass spectrometry were utilized to identify each compound. Thirteen compounds were isolated in a pure form and identified as: elemicin (1), isoelemicin (2), myristicin (4), surinamensin (5), malabaricone C (6), 2-(3'-allyl-2',6'-dimethoxy-phenyloxy)-l- acetoxy-(3,4-dimethoxyphenyl)-propyl ester (7), methoxylicarin A (8), licarin A (9), malabaricone B (10), licarin C (11), 5'-methoxylicarin B (12), licarin B (13), and 2-(3'-allyl-2',6'-dimethoxy-phenyloxy)-l-methyl-5-methoxy-1,2-dihydrobenzofuran (3, a new compound). With repeated isolation runs, these pure compounds can be prepared in quantities sufficient for biological evaluation as needed. The availability of purified compounds will also allow the development of specific, accurate, and sensitive analytical procedures for pharmacokinetic studies and for quality control of nutmeg products. Both aspects are essential for nutmeg-focused drug discovery. The same approach can also be adapted to other medicinal plants of potential interest.
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Kim J, Jin G, Lee Y, Chun HS, Ahn S, Kim BH. Combined Analysis of Stable Isotope, (1)H NMR, and Fatty Acid To Verify Sesame Oil Authenticity. J Agric Food Chem 2015; 63:8955-8965. [PMID: 26395416 DOI: 10.1021/acs.jafc.5b04082] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The aim of this study was to verify the authenticity of sesame oils using combined analysis of stable isotope ratio, (1)H NMR spectroscopy, and fatty acid profiles of the oils. Analytical data were obtained from 35 samples of authentic sesame oils and 29 samples of adulterated sesame oils currently distributed in Korea. The orthogonal projection to latent structure discriminant analysis technique was used to select variables that most effectively verify the sesame oil authenticity. The variables include δ(13)C value, integration values of NMR peaks that signify the CH3 of n-3 fatty acids, CH2 between two C═C, protons from sesamin/sesamolin, and 18:1n-9, 18:3n-3, 18:2t, and 18:3t content values. The authenticity of 65 of 70 blind samples was correctly verified by applying the range of the eight variables found in the authentic sesame oil samples, suggesting that triple analysis is a useful approach to verify sesame oil authenticity.
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Affiliation(s)
- Jeongeun Kim
- Department of Food Science and Technology, Chung-Ang University , Anseong 456-756, Korea
| | - Gyungsu Jin
- Department of Chemistry, Chung-Ang University , Seoul 156-756, Korea
| | - Yunhee Lee
- Department of Chemistry, Chung-Ang University , Seoul 156-756, Korea
| | - Hyang Sook Chun
- Department of Food Science and Technology, Chung-Ang University , Anseong 456-756, Korea
| | - Sangdoo Ahn
- Department of Chemistry, Chung-Ang University , Seoul 156-756, Korea
| | - Byung Hee Kim
- Department of Food Science and Technology, Chung-Ang University , Anseong 456-756, Korea
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28
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Liu Y, Young K, Rakotondraibe LH, Brodie PJ, Wiley JD, Cassera M, Callmander MW, Rakotondrajaona R, Rakotobe E, Rasamison VE, TenDyke K, Shen Y, Kingston DGI. Antiproliferative Compounds from Cleistanthus boivinianus from the Madagascar Dry Forest. J Nat Prod 2015; 78:1543-1547. [PMID: 26091020 PMCID: PMC4517784 DOI: 10.1021/np501020m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Indexed: 06/04/2023]
Abstract
The two new lignans 3α-O-(β-D-glucopyranosyl)desoxypodophyllotoxin (1) and 4-O-(β-D-glucopyranosyl)dehydropodophyllotoxin (2) were isolated from Cleistanthus boivinianus, together with the known lignans deoxypicropodophyllotoxin (3), (±)-β-apopicropodophyllin (4), (-)-desoxypodophyllotoxin (5), (-)-yatein (6), and β-peltatin-5-O-β-D-glucopyranoside (7). The structures of all compounds were characterized by spectroscopic techniques. Compounds 1, 4, and 5 showed potent antiproliferative activities against the A2780 ovarian cancer cell line, with IC50 values of 33.0 ± 3.6, 63.1 ± 6.7, and 230 ± 1 nM, respectively. Compounds 2 and 7 showed only modest A2780 activities, with IC50 values of 2.1 ± 0.3 and 4.9 ± 0.1 μM, respectively, while compounds 3 and 6 had IC50 values of >10 μM. Compound 1 also had potent antiproliferative activity against the HCT-116 human colon carcinoma cell line, with an IC50 value of 20.5 nM, and compound 4 exhibited modest antiproliferative activity against the A2058 human caucasian metastatic melanoma and MES-SA human uterine sarcoma cell lines, with IC50 values of 4.6 and 4.0 μM, respectively.
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Affiliation(s)
- Yixi Liu
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Kelly Young
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - L. Harinantenaina Rakotondraibe
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Peggy J. Brodie
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Jessica D. Wiley
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Maria
B. Cassera
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Martin W. Callmander
- Missouri
Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166, United States
| | - R. Rakotondrajaona
- Centre
National d’Application des Recherches Pharmaceutiques, B.P. 702, Antananarivo 101, Madagascar
| | - Etienne Rakotobe
- Centre
National d’Application des Recherches Pharmaceutiques, B.P. 702, Antananarivo 101, Madagascar
| | - Vincent E. Rasamison
- Centre
National d’Application des Recherches Pharmaceutiques, B.P. 702, Antananarivo 101, Madagascar
| | - Karen TenDyke
- Eisai Inc., 4 Corporate
Drive, Andover, Massachusetts 01810, United States
| | - Yongchun Shen
- Eisai Inc., 4 Corporate
Drive, Andover, Massachusetts 01810, United States
| | - David G. I. Kingston
- Department of Chemistry and the
Virginia Tech Center for Drug Discovery and Department of
Biochemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
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Zhang W, Chen H, Han X, Yang Z, Tang M, Zhang J, Zeng S, Hu D, Zhang K. Determination and analysis of the dissipation and residue of cyprodinil and fludioxonil in grape and soil using a modified QuEChERS method. Environ Monit Assess 2015; 187:414. [PMID: 26050067 DOI: 10.1007/s10661-015-4661-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 06/01/2015] [Indexed: 06/04/2023]
Abstract
A simple and accurate method coupled with a gas chromatography-nitrogen phosphorus detector was developed to detect cyprodinil and fludioxonil in grape and soil. The accuracy and precision of the method in detecting the two fungicides were evaluated by conducting intra- and inter-day recovery experiments. The limits of detection were 0.017 mg/kg for cyprodinil and 0.030 mg/kg for fludioxonil. The limits of quantitation were 0.05 mg/kg for cyprodinil and 0.10 mg/kg for fludioxonil in grape and soil. The recoveries of the fungicides in grape and soil were investigated at three spiked levels and were found to range from 85.81 to 102.94% for cyprodinil and from 92.00 to 106.86% for fludioxonil, with relative standard deviations below 7%. Field experiments were conducted in two experimental locations in China. The half-lives of cyprodinil were 9.6-20.8 days in grape and 5.8-15.6 day in soil, and the half-lives of fludioxonil were 6.2-7.2 days in grape and 6.0-12.1 days in soil. When the cyprodinil and fludioxonil 62% water-dispersible granule formulation was sprayed at a low dosage three times, terminal residues of cyprodinil and fludioxonil were below 1.0 mg/kg in grape 14 days after harvest. This work may serve as a reference to establish the maximum residue limits for cyprodinil and fludioxonil in grape and promote the proper and safe use of these two fungicides.
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Affiliation(s)
- Wen Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, People's Republic of China
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Yamauchi S, Ichikawa H, Nishiwaki H, Shuto Y. Evaluation of plant growth regulatory activity of furofuran lignan bearing a 7,9':7',9-diepoxy structure using optically pure (+)- and (-)-enantiomers. J Agric Food Chem 2015; 63:5224-8. [PMID: 25955149 DOI: 10.1021/acs.jafc.5b01099] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The plant growth regulatory activity of furofuran lignan (7,9':7',9-diepoxylignan) was evaluated by employing optically pure synthesized (+)- and (-)-enantiomers. (+)-Sesamin possessing a 3,4-methylenedioxy group on the aromatic rings and 7-aryl structure showed growth promotion activity against lettuce roots (EC50 = 0.50 mM); on the other hand, growth inhibitory activity was observed against lettuce shoots (EC50 = 0.38 mM). Against ryegrass shoots, (-)-sesamolin, which has 3,4-methylenedioxy groups on the aromatic rings and a 7-acetal structure, was effective in showing growth inhibitory activity (EC50 = 0.23 mM). Different activity levels were observed between (+)- and (-)-enantiomers. It was assumed that the 3,4-methylenedioxy group on the aromatic ring was more potent for the plant growth regulatory activity.
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Affiliation(s)
- Satoshi Yamauchi
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
- §South Ehime Fisheries Research Center, 1289-1 Funakoshi, Ainan, Ehime 798-4292, Japan
| | - Hiroaki Ichikawa
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Hisashi Nishiwaki
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Yoshihiro Shuto
- †Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
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Oluyemisi OO, Oriabure AE, Adekunle AJ, Ramsay KST, Shyyaula S, Choudhary MI. Bioassay-guided isolation of Poliovirus-inhibiting constituents from Zephyranthes candida. Pharm Biol 2015; 53:882-887. [PMID: 25431196 DOI: 10.3109/13880209.2014.946061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 06/04/2023]
Abstract
CONTEXT Plants of the Zephyranthes genus are globally used in folk medicine. In a previous study, Zephyranthes candida Linn. (Amaryllidaceae) was identified as having antiviral properties; this led to anti-poliovirus assay-guided isolation of compounds from crude methanol extract of the plant. OBJECTIVE Isolation of anti-poliovirus constituents from Z. candida. MATERIAL AND METHODS Active chloroform fraction from crude methanol extract of Z. candida (whole plant) was subjected to bioassay-guided fractionation; repeated column and preparative thin layer chromatography led to isolation of active compounds. Chemical structures were identified using spectroscopic techniques. Using serial two-fold dilution of maximum non-toxic concentration (MNTC) of each compound (0.0625-1 µg/mL for lycorine and 0.625-10 µg/mL for trisphaeridine and 7-hydroxy-3',4'-methylenedioxyflavan), the ability of extracts to inhibit viral-induced cell death in tissue culture was evaluated 72 h post-infection by the colorimetric method using MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) dye. Regression analysis was used to determine 50% inhibitory concentration (IC50) and 50% cytotoxicity concentration (CC50), from which selective index (SI) was calculated. RESULTS From the chloroform fraction, three compounds were isolated and identified, namely lycorine (1), trisphaeridine (2), and 7-hydroxy-3',4'-methylenedioxyflavan (3) as the anti-polioviral components. Lycorine was the most active, with an IC50 value of 0.058 µg/mL followed by trisphaeridine (2) with an IC50 of 0.1427 µg/mL, and 7-hydroxy-3',4'-methylenedioxyflavan (3) with an IC50 of 0.2384 µg/mL. DISCUSSIONS AND CONCLUSIONS The antipoliovirus activity of trisphaeridine (2) and 7-hydroxy-3',4'-methylenedioxyflavan (3) is established in this report; these compounds are of moderate toxicity and have very good SI. They could be a potential template for the development of a new antiviral agent.
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Lassalle Y, Nicol É, Genty C, Bourcier S, Bouchonnet S. Structural elucidation and estimation of the acute toxicity of the major UV-visible photoproduct of fludioxonil - detection in both skin and flesh samples of grape. J Mass Spectrom 2015; 50:864-869. [PMID: 26169141 DOI: 10.1002/jms.3598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 01/21/2015] [Revised: 03/05/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
Ultraviolet (UV)-visible irradiation of fludioxonil was investigated with two photoreactors using either a mercury or xenon vapor lamp. In both cases, it led to the formation of only one photoproduct in significant amount: 2-(2,2-difluorobenzo[d][1,3]dioxol-4-yl)-2-(nitrosomethylene)-4-oxobutanenitrile, which has been characterized using Liquid Chromatography - High Resolution - Tandem Mass Spectrometry (LC-HR-MS/MS) coupling. A photolysis pathway has been proposed to rationalize its formation in degassed water. In vitro bioassays on Vibrio fischeri bacteria showed that UV-vis irradiation of an aqueous solution of fludioxonil significantly increases its toxicity. Because no other by-product was detected in significant amount, the photoproduct mentioned above may be considered mainly responsible for this increase in toxicity. Grape berries treated with a 50 ppm aqueous solution of fludioxonil were submitted to UV-visible irradiation under laboratory conditions. The fungicide and photoproduct were detected in both skin and flesh of berries, even after they have been rinsed with water. The ability of the photoproduct to pass through the fruit skin is comparable with that of fludioxonil. These results are of concern for consumers because they mean that water tap rinsing does not lead to efficient removing of both compounds.
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Affiliation(s)
- Yannick Lassalle
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Édith Nicol
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Christophe Genty
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Sophie Bourcier
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Stéphane Bouchonnet
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
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Abstract
BACKGROUND Gomisin G, isolated from herb Schisandra chinensis, exhibits anti-tumor activities. Therefore, Gomisin G is a drug candidate for anti-liver cancer therapy. AIMS To predict the metabolic behavior and metabolism-based drug-drug interaction of gomisin G. METHODS Molecular docking method was used. The crystal structure of CYP3A4 with the ligand ketoconazole was chosen from protein data bank (http://www.rcsb.org/pdb). Chemdraw software was used to draw the two-dimensional structure of gomisin G with standard bond lengths and angles. RESULTS Gomisin G can be well docked into the activity site of CYP3A4, and distance between gomisin G the heme active site was 2.75 Å. To evaluate whether the inhibitors of CYP3A4 can affect the metabolism of gomisin G, co-docking of gomisin G and ketoconazole was further performed. The distance between ketoconazole and activity center (2.10 Å) is closer than the distance between gomisin G and activity center of CYP3A4, indicating the easy influence of CYP3A4's strong inhibitor towards the metabolism of gomisin G. CONCLUSION Gomisin G is a good substrate of CYP3A4, and CYP3A4 inhibitors easily affect the metabolism of Gomisin G.
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Affiliation(s)
- Liu Xiaoyang
- Department of Hepatobiliary Surgery, Jinan Military General Hospital, Jinan 250031, P.R. China
| | - Ni Chenming
- Laboratory of Pharmacology, Department of Pharmacy, Jinan Military General Hospital, Jinan 250031, P.R. China
| | - Li Chengqing
- Department of General Surgery, No. 1 Hospital of People's Liberation Army, Lanzhou 730030, P.R. China
| | - Liu Tao
- Department of Dermatology, Tangdu Hospital, the Fourth Military Medical University, Xi'an 710038, P.R. China
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Abstract
Short total syntheses of arnottin I and II were accomplished in 5 and 6 steps, respectively. A sesamol-benzyne cycloaddition with a 3-furyl-benzoate followed by regiospecific lactonization provided rapid, large-scale access to the core of arnottin I. Saponification of arnottin I and hypervalent iodide mediated spirocyclization provided an efficient and direct preparation of racemic arnottin II.
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Affiliation(s)
- Matthew J. Moschitto
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853
| | - David R. Anthony
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853
| | - Chad A. Lewis
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853
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Oh K, Matsumoto T, Yamagami A, Ogawa A, Yamada K, Suzuki R, Sawada T, Fujioka S, Yoshizawa Y, Nakano T. YCZ-18 is a new brassinosteroid biosynthesis inhibitor. PLoS One 2015; 10:e0120812. [PMID: 25793645 PMCID: PMC4368189 DOI: 10.1371/journal.pone.0120812] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 02/05/2015] [Indexed: 01/31/2023] Open
Abstract
Plant hormone brassinosteroids (BRs) are a group of polyhydroxylated steroids that play critical roles in regulating broad aspects of plant growth and development. The structural diversity of BRs is generated by the action of several groups of P450s. Brassinazole is a specific inhibitor of C-22 hydroxylase (CYP90B1) in BR biosynthesis, and the application use of brassinazole has emerged as an effective way of complementing BR-deficient mutants to elucidate the functions of BRs. In this article, we report a new triazole-type BR biosynthesis inhibitor, YCZ-18. Quantitative analysis the endogenous levels of BRs in Arabidopsis indicated that YCZ-18 significantly decreased the BR contents in plant tissues. Assessment of the binding affinity of YCZ-18to purified recombinant CYP90D1 indicated that YCZ-18 induced a typical type II binding spectrum with a Kd value of approximately 0.79 μM. Analysis of the mechanisms underlying the dwarf phenotype associated with YCZ-18 treatment of Arabidopsis indicated that the chemically induced dwarf phenotype was caused by a failure of cell elongation. Moreover, dissecting the effect of YCZ-18 on the induction or down regulation of genes responsive to BRs indicated that YCZ-18 regulated the expression of genes responsible for BRs deficiency in Arabidopsis. These findings indicate that YCZ-18 is a potent BR biosynthesis inhibitor and has a new target site, C23-hydroxylation in BR biosynthesis. Application of YCZ-18 will be a good starting point for further elucidation of the detailed mechanism of BR biosynthesis and its regulation.
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Affiliation(s)
- Keimei Oh
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
- * E-mail:
| | - Tadashi Matsumoto
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Ayumi Yamagami
- Antibiotics laboratory, RIKEN, 2–1 Hirosawa, Wako, Saitama, Japan
| | - Atushi Ogawa
- Department of Bioproduction, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Kazuhiro Yamada
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Ryuichiro Suzuki
- Department of Bioproduction, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Takayuki Sawada
- Biotechnology Research Center, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Shozo Fujioka
- Antibiotics laboratory, RIKEN, 2–1 Hirosawa, Wako, Saitama, Japan
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, Japan
| | - Yuko Yoshizawa
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo Nakano, Akita, Japan
| | - Takeshi Nakano
- Antibiotics laboratory, RIKEN, 2–1 Hirosawa, Wako, Saitama, Japan
- RIKEN Center for Sustainable Resource Science, Wako, Saitama, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
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36
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Barreiro EM, Boltukhina EV, White AJP, Hii KK(M. Atropisomeric [(diphosphine)Au2 Cl2 ] complexes and their catalytic activity towards asymmetric cycloisomerisation of 1,6-enynes. Chemistry 2015; 21:2686-90. [PMID: 25504519 PMCID: PMC4524423 DOI: 10.1002/chem.201404496] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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: 07/21/2014] [Indexed: 11/22/2022]
Abstract
X-ray crystal structures of two [(diphosphine)Au2 Cl2 ] complexes (in which diphosphine=P-Phos and xylyl-P-Phos; P-Phos=[2,2',6,6'-Tetramethoxy-4,4'-bis(diphenylphosphino)-3,3'-bipyridine]) were determined and compared to the reported structures of similar atropisomeric gold complexes. Correlations between the Au⋅⋅⋅Au distances and torsional angles for the biaryl series of ligands (MeOBIPHEP, SEGPhos, and P-Phos; BIPHEP=2,2'-bis(diphenylphosphino)-1,1'-biphenyl, SEGPhos=[(4,4'-bi-1,3-benzodioxole)-5,5'-diyl]bis[diphenylphosphine]) can be made; these measurements appear to be very dependent upon the phosphorous substituent. Conversely, the same effect was not observed for ligands based on the binaphthyl (BINAP) series. The catalytic activity of these complexes was subsequently assessed in the enantioselective cycloisomerisation of 1,6-enynes and revealed an over-riding electronic effect: more-electron-rich phosphines promote greater enantioselectivity. The possibility of silver acting as a (co-)catalyst was ruled out in these reactions.
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Affiliation(s)
- Elena M Barreiro
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
| | | | - Andrew J P White
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
| | - King Kuok (Mimi) Hii
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
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37
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Gong YX, Zhu QF, Zhong JQ, Liu LF, Li XF, Zheng XH, Luo HY, Zhao XY. [Design, synthesis and biological evaluation of novel [1,3] dioxolo [4,5-f]isoindolone derivatives]. Yao Xue Xue Bao 2015; 50:191-198. [PMID: 25975027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of [1,3]dioxolo[4,5-f]isoindolone derivatives were designed, synthesized and evaluated as inhibitors of acetylcholinesterases (AChE). Furthermore, their effects on memory impairment of mice induced by scopolamine were investigated with step-through test. The results suggested that most of the target compounds exhibited potential inhibition on AChE with IC50 values at micromolar range. Compounds I1 (IC50 value of 0.086 μmol · L(-1)) and I2 (IC50 value of 0.080 μmol · L(-1)) showed the strongest AChE inhibitory activity, which are equipotent to donepezil (IC50 value of 0.094 μmol · L(-1)). Moreover, compounds I1-I4 could improve the memory impairment induced by scopolamine in mice.
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38
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Le VH, Inai M, Williams RM, Kan T. Ecteinascidins. A review of the chemistry, biology and clinical utility of potent tetrahydroisoquinoline antitumor antibiotics. Nat Prod Rep 2015; 32:328-47. [PMID: 25273374 PMCID: PMC4806878 DOI: 10.1039/c4np00051j] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [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] [Indexed: 12/21/2022]
Abstract
The ecteinascidin family comprises a number of biologically active compounds, containing two to three tetrahydroisoquinoline subunits. Although isolated from marine tunicates, these compounds share a common pentacyclic core with several antimicrobial compounds found in terrestrial bacteria. Among the tetrahydroisoquinoline natural products, ecteinascidin 743 (Et-743) stands out as the most potent antitumor antibiotics that it is recently approved for treatment of a number of soft tissue sarcomas. In this article, we will review the backgrounds, the mechanism of action, the biosynthesis, and the synthetic studies of Et-743. Also, the development of Et-743 as an antitumor drug is discussed.
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Affiliation(s)
- V H Le
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA.
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39
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Barbosa LC, Furtado RA, Bertanha HCC, Tomazella IM, Costa ES, Bastos JK, Andrade e Silva ML, Tavares DC. Chemopreventive effects of (-)-hinokinin against 1,2-dimethylhydrazine-induced genotoxicity and preneoplastic lesions in rat colon. J Nat Prod 2014; 77:2312-2315. [PMID: 25297647 DOI: 10.1021/np500093u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
(-)-Hinokinin (1) is a dibenzylbutyrolactone lignan obtained by the partial synthesis of (-)-cubebin. This study reports the antigenotoxic and anticarcinogenic potential of 1 by the comet and aberrant crypt focus assays in the peripheral blood and colon of 4-5-week-old Wistar rats, respectively. The rats were exposed to 1,2-dimethylhydrazine (40 mg/kg) and were treated by gavage with doses of 10, 20, and 40 mg/kg of 1. The results showed that the dose of 40 mg/kg was neither genotoxic nor carcinogenic. In the comet assay, all 1 doses displayed antigenotoxic effects. In addition, this compound (20 and 40 mg/kg) exhibited an anticarcinogenic effect in the aberrant crypt focus assay.
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Affiliation(s)
- Lilian C Barbosa
- Universidade de Franca , Avenida Dr. Armando Salles de Oliveira 201, 14404-600 Franca, São Paulo, Brazil
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Gaia AM, Yamaguchi LF, Jeffrey CS, Kato MJ. Age-dependent changes from allylphenol to prenylated benzoic acid production in Piper gaudichaudianum Kunth. Phytochemistry 2014; 106:86-93. [PMID: 25041698 DOI: 10.1016/j.phytochem.2014.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/30/2014] [Accepted: 05/31/2014] [Indexed: 05/24/2023]
Abstract
HPLC-DAD and principal component analysis (PCA) of the (1)H NMR spectrum of crude plant extracts showed high chemical variability among seedlings and adult organs of Piper gaudichaudianum. While gaudichaudianic acid was the major compound in the adult leaves, apiole and dillapiole were the major compounds in their seedling leaves. By the 15th month of seedling growth, the levels of apiole and dillapiole decreased and gaudichaudianic acid appeared along with two compounds, biosynthetically related to gaudichaudianic acid.
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Affiliation(s)
- Anderson M Gaia
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Lydia F Yamaguchi
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | | | - Massuo J Kato
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
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41
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Fan WT, Wu XL, Pan YL, Niu YB, Li CR, Mei QB. [Synthesis and antifatigue activities of new benzamide derivatives]. Yao Xue Xue Bao 2014; 49:1442-1445. [PMID: 25577876] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To explore novel antifatigue agents targeting with AMPA receptor, 10 compounds were synthesized and their structures were confirmed by 1H NMR, ESI-MS and elemental analysis. 1-BCP was treated as the leading compound. The antifatigue activities were evaluated by weight-loaded forced swimming test, and the AMPA receptor binding affinities were tested with radioligand receptor binding assays. The results unveiled that 5b appeared to possess potent antifatigue activities and high affinity with AMPA receptor, which deserved further studies.
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Affiliation(s)
- Wu-Tu Fan
- Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, China
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42
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Abstract
Nine furofuran compounds having a different type of oxidation were synthesized from one common intermediate in a short series of steps, and the antioxidant activity was evaluated. It was found that the tertiary hydroxy group on the furofuran ring affected the degree of antioxidant activity and that the structure, except for the phenolic part, was important for the antioxidant activity.
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Razzaghi-Abyaneh M, Yoshinari T, Shams-Ghahfarokhi M, Rezaee MB, Nagasawa H, Sakuda S. Dillapiol and Apiol as Specific Inhibitors of the Biosynthesis of Aflatoxin G1inAspergillus parasiticus. Biosci Biotechnol Biochem 2014; 71:2329-32. [PMID: 17827697 DOI: 10.1271/bbb.70264] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dillapiol was isolated from the essential oil of dill as a specific inhibitor of aflatoxin G1 production. It inhibited aflatoxin G1 production by Aspergillus parasiticus with an IC50 value of 0.15 microM without inhibiting aflatoxin B1 production or fungal growth. Apiol and myristicin, congeners of dillapiol, showed similar activity with IC50 values of 0.24 and 3.5 microM, respectively.
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Affiliation(s)
- Mehdi Razzaghi-Abyaneh
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
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Misra NN, Pankaj SK, Walsh T, O'Regan F, Bourke P, Cullen PJ. In-package nonthermal plasma degradation of pesticides on fresh produce. J Hazard Mater 2014; 271:33-40. [PMID: 24598029 DOI: 10.1016/j.jhazmat.2014.02.005] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 01/09/2014] [Accepted: 02/05/2014] [Indexed: 06/03/2023]
Abstract
In-package nonthermal plasma (NTP) technology is a novel technology for the decontamination of foods and biological materials. This study presents the first report on the potential of the technology for the degradation of pesticide residues on fresh produce. A cocktail of pesticides, namely azoxystrobin, cyprodinil, fludioxonil and pyriproxyfen was tested on strawberries. The concentrations of these pesticides were monitored in priori and post-plasma treatment using GC-MS/MS. An applied voltage and time dependent degradation of the pesticides was observed for treatment voltages of 60, 70 and 80 kV and treatment durations ranging from 1 to 5 min, followed by 24h in-pack storage. The electrical characterisation revealed the operation of the discharge in a stable filamentary regime. The discharge was found to generate reactive oxygen and excited nitrogen species as observed by optical emission spectroscopy.
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Affiliation(s)
- N N Misra
- BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin 1, Ireland
| | - S K Pankaj
- BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin 1, Ireland
| | - Tony Walsh
- National Pesticide Laboratory, The State Laboratory, Department of Agriculture, Food and the Marine, Backweston Laboratory Campus, Celbridge, Kildare, Ireland
| | - Finbarr O'Regan
- National Pesticide Laboratory, The State Laboratory, Department of Agriculture, Food and the Marine, Backweston Laboratory Campus, Celbridge, Kildare, Ireland
| | - Paula Bourke
- BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin 1, Ireland
| | - P J Cullen
- BioPlasma Research Group, School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin 1, Ireland; School of Chemical Engineering, University of New South Wales, Sydney, Australia.
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Kang GJ, Yang SJ, Zhou HY, Yang ZM, Chen LY. [Chemical constituents of pattra medicine Euodia lepta]. Zhong Yao Cai 2014; 37:74-76. [PMID: 25090710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To study the chemical constituents of Pattra Medicine Euodia lepta in Xishuangbanna of Yunnan Province. METHODS The chemical constituents were isolated and purified by chromatographic techniques, and identified by NMR, MS and other spectral methods. RESULTS In 60% ethanol extract from the stems,and 95% ethanol extract from the leaves, six compounds and two compounds were isolated and identified as pachypodol( 1) ,3-(3-methyl-but-2-enyl )umbelliferone(2),7-demethylsuberosin (3),beta-sitosterol (4),3,7-dimethoxy kaempferol(5), euolitrine(6), sesamin(7) and p-O-geranyl coumaric acid(8), respectively. CONCLUSION Compound 7 is obtained from Euodia genus for the first time,and compound 8 is obtained from domestic Euodia lepta for the first time.
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Yu XL, Pi ZF, Hu XL, Song FR, Liu ZQ. [High performance preparation and structural confirmation of lignans from Schisandrae chinensis fructus by using HSCCC combined with ESI-MSn method]. Yao Xue Xue Bao 2014; 49:78-82. [PMID: 24783510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
High-speed counter-current chromatography (HSCCC) was used to high performance separate and prepare lignans from Schisandrae chinensis fructus. The solvent system is composed of n-hexane-ethyl acetate-methanol-water (9 : 1 : 5 : 5) and n-hexane-ethyl acetate-methanol-water (9 : 1 : 9 : 5), speed is at 900 r.min-1, and flow rate is at 2.0 mL.min-1. Five fractions from Schisandrae chinensis fructus extract were separated and prepared with one HSCCC process. They were identified as schisandrin, gomisin J, schisandrol B, schisantherin A and deoxyschizandrin by electrospray ionization-multiple tandem mass spectrometry (ESI-MSn), respectively. Their contents were obtained in 98.74%, 94.32%, 99.53%, 94.23% and 98.68% by ultra high performance liquid chromatography (UPLC), separately. The rapid and simple method can be applied for the preparation of lignans from Schisandrae chinensis fructus.
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Abstract
This paper illustrates some biochemical and pharmacological properties of two natural marine products such as trabectedin (ET-743, Yondelis) and aplidine. Trabectedin has shown clinical antitumor activity in refractory soft tissue sarcoma and ovarian cancer. The lack of cross resistance of trabectedin with other chemotherapeutic drugs is presumably related to its peculiar mode of action, that seems to be related to a promoter-dependent transcription modulation. Aplidine is a potent pro-apoptotic inducer in human leukemia and has antiangiogenic properties. These examples support the view that more research should be carried out to investigate new natural marine products since there are compounds among them with antitumor properties. Some of them appear to act by mechanisms different from those of conventional chemotherapeutic drugs and thus may be effective against tumors for which no active drugs are available.
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Affiliation(s)
- M D'Incalci
- Department of Oncology, Istituto di Ricerche Farmacologiche "Mario Negri", Via Eritrea 62, Milan, Italy.
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48
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Abstract
Three new sauchinone analogues, sauchinones B-D (1-3), together with sauchinone (4), were isolated from the aerial part of Saururus chinensis. Structures of the new compounds were determined by extensive spectroscopic data as well as X-ray analysis. Compounds 3 and 4 inhibited nitric oxide production in lipopolysaccharide stimulated RAW 264.7 cells with IC50 values of 13.0 and 14.2 µM, respectively.
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Affiliation(s)
- Xiu Gao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Juan He
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Xing-De Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Li-Yan Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Liao-Bin Dong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Xu Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Xiao Cheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
| | - Qin-Shi Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, People's Republic of China
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Liu YQ, Yang SH, Liu Q, Pei G, Pan WW, Liu M, Peng CY. [Study on chemical constituents of Zanthoxyli cortex's ethyl acetate extract]. Zhong Yao Cai 2013; 36:1792-1795. [PMID: 24956821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To study the chemical constituents of Zanthoxyli Cortex. METHODS The chemical constituents were isolated and purified by silica gel and HP-20, MCI gel, Sephadex LH -20 column chromatography, RP-18 and PTLC. Their structures were elucidated by the analysis of spectral data and chemical properties. RESULTS Ten compounds were isolated from EtOAc extract and their structures were identified as: asarinin (I), fargesin (II), eudesmin (III), (1R, 2R, 5R, 6S)-2-(3,4-dimethoxyphenyl)-6-(3,4-dihydroxyphenyl)-3,7-dioxabicyclo[3.3.0]-octane(IV), dimethoxysamin(V), rel-(1R,5R,6S)-6-(3,4-dimethoxyphen-yl)-3,7-dioxabicyclo-[3.3.0]-octan-2-one(VI), Magnone A(VII), beta-sitoste-rol( VIII), beta-armyrin(IX), beta-amyrone(X). CONCLUSION These compounds isolated from Zanthoxyli Cortex's Ethyl acetate extract are all known compounds. Fargesin(II) and beta-amyrone(X) are isolated from Zanthoxyli Cortex for the first time.
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Timple JMV, Magalhães LG, Souza Rezende KC, Pereira AC, Cunha WR, Andrade e Silva ML, Mortensen OV, Fontana ACK. The lignan (-)-hinokinin displays modulatory effects on human monoamine and GABA transporter activities. J Nat Prod 2013; 76:1889-95. [PMID: 24112084 DOI: 10.1021/np400452n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The neurotransmitter transporters of the SLC6 family play critical roles in the regulation of neurotransmission and are the primary targets of therapeutic agents used to treat clinical disorders involving compromised neurotransmitter signaling. The dopamine and norepinephrine transporters have been implicated in clinical disorders such as attention deficit hyperactivity disorder (ADHD) and substance abuse. The GABA transporters (GATs) serve as a target for anxiolytic, antidepressant, and antiepileptic therapies. In this work, the interaction with neurotransmitter transporters was characterized for a derivative of the lignan (-)-cubebin (1), namely, (-)-hinokinin (2). Using in vitro pharmacological assays, 2 selectively inhibited the human dopamine and norepinephrine transporters, in a noncompetitive manner possibly mediated by binding to a novel site within the transporters, and displayed low affinity for the serotonin transporter. Compound 2 also specifically inhibited the GAT-1 GABA transporter subtype. Compound 2 is not a substrate of the carriers as it had no effect on the efflux of either of the neurotransmitters investigated. This compound is inactive toward glutamate and glycine transporters. These results suggest that 2 may serve as a tool to develop new therapeutic drugs for ADHD and anxiety that target the DAT, NET, and GAT-1 transporters.
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Affiliation(s)
- Julie Marie V Timple
- Department of Pharmacology and Physiology, Drexel University College of Medicine , Philadelphia, Pennsylvania 19102, United States
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