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Tan Y, Chen L, Ding G. Naturally Occurring Asterric Acid Analogs: Chemistry and Biology. J Agric Food Chem 2024; 72:4518-4537. [PMID: 38386916 DOI: 10.1021/acs.jafc.3c06690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Asterric acid and its analogs belong to diphenyl ethers (DPEs) with multiple substitutions on A/B aromatic rings. This member of DPEs originates from the polyketide pathway and displays a wide range of biological effects. Though the structures of asterric acid analogs are not complex, there were only more than 50 asterric acid analogs found in nature from 1960 to 2023. In this review, the structures, bioactivities, and biosynthesis of asterric acid analogs are summarized. More importantly, the empirical rule about the shielding effect of B-ring on H-6 is suggested, and this provides a convenient and useful way to analyze the NMR spectral data of asterric acid analogs, based on which the chemical shift values of the A-ring in some asterric acid analogs are revised.
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Affiliation(s)
- Yue Tan
- State Key Laboratory of Basis and New Drug Development of Natural and Nuclear Drugs, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, People's Republic of China
| | - Lin Chen
- Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Huanghe Science and Technology College, Zhengzhou 450006, People's Republic of China
| | - Gang Ding
- State Key Laboratory of Basis and New Drug Development of Natural and Nuclear Drugs, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, People's Republic of China
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Tan Y, Wang YD, Li Q, Xing XK, Niu SB, Sun BD, Chen L, Pan RL, Ding G. Undescribed diphenyl ethers betaethrins A-I from a desert plant endophytic strain of the fungus Phoma betae A.B. Frank (Didymellaceae). Phytochemistry 2022; 201:113264. [PMID: 35679970 DOI: 10.1016/j.phytochem.2022.113264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/12/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
Ten diphenyl ethers (DPEs), including nine undescribed analogs named betaethrins A-I, were isolated from the desert plant endophytic fungus Phoma betae A.B. Frank (Didymellaceae). Their structures were determined mainly by NMR, HR-ESI-MS spectral and X-ray diffraction experiments. Betaethrins D-I possessed different fatty acid chains connected with the B-ring, which was the first report in all DPEs. The shielding effect of the B-ring on H-6 (A-ring) in methyl barceloneate, betaethrin A and betaethrins D-F (asterric acid analogs) was first observed and analyzed, which could differentiate the 1H-NMR chemical shift values of H-4/H-6 without the assistance of 3-OH. An empirical rule was then suggested: the steric hindrance between the A- and B-rings in asterric acid analogs might prevent these two aromatic rings from rotating freely, which led to the 1H-NMR chemical shift value of H-6 being in the high field zone due to the shielding effect of the B-ring on H-6. Based on the empirical rule, the chemical shift values of the A-ring in methyl barceloneate were revised. The possible biosynthesis of these isolates was postulated. Betaethrin H showed moderate cytotoxicity against MCF-7 and HepG2 cancer cell lines. Betaethrins A-F, H and I displayed strong antioxidant activities. These results further implied that endophytic fungi from unique environments, such as desert plants, with few chemical studies are an important resource of undescribed and bioactive metabolites.
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Affiliation(s)
- Yue Tan
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Yan-Duo Wang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Qi Li
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Xiao-Ke Xing
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China
| | - Shu-Bin Niu
- Department of Pharmacy, Beijing City University, Beijing, 100083, People's Republic of China
| | - Bing-Da Sun
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100090, People's Republic of China
| | - Lin Chen
- Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Huanghe Science and Technology College, Zhengzhou, 450006, People's Republic of China
| | - Rui-Le Pan
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China.
| | - Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, People's Republic of China.
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3
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Shi Y, Zeida A, Edwards CE, Mallory ML, Sastre S, Machado MR, Pickles RJ, Fu L, Liu K, Yang J, Baric RS, Boucher RC, Radi R, Carroll KS. Thiol-based chemical probes exhibit antiviral activity against SARS-CoV-2 via allosteric disulfide disruption in the spike glycoprotein. Proc Natl Acad Sci U S A 2022; 119:e2120419119. [PMID: 35074895 PMCID: PMC8833197 DOI: 10.1073/pnas.2120419119] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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: 11/09/2021] [Accepted: 12/13/2021] [Indexed: 01/07/2023] Open
Abstract
The development of small-molecules targeting different components of SARS-CoV-2 is a key strategy to complement antibody-based treatments and vaccination campaigns in managing the COVID-19 pandemic. Here, we show that two thiol-based chemical probes that act as reducing agents, P2119 and P2165, inhibit infection by human coronaviruses, including SARS-CoV-2, and decrease the binding of spike glycoprotein to its receptor, the angiotensin-converting enzyme 2 (ACE2). Proteomics and reactive cysteine profiling link the antiviral activity to the reduction of key disulfides, specifically by disruption of the Cys379-Cys432 and Cys391-Cys525 pairs distal to the receptor binding motif in the receptor binding domain (RBD) of the spike glycoprotein. Computational analyses provide insight into conformation changes that occur when these disulfides break or form, consistent with an allosteric role, and indicate that P2119/P2165 target a conserved hydrophobic binding pocket in the RBD with the benzyl thiol-reducing moiety pointed directly toward Cys432. These collective findings establish the vulnerability of human coronaviruses to thiol-based chemical probes and lay the groundwork for developing compounds of this class, as a strategy to inhibit the SARS-CoV-2 infection by shifting the spike glycoprotein redox scaffold.
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MESH Headings
- Allosteric Regulation
- Amino Alcohols/chemistry
- Amino Alcohols/pharmacology
- Angiotensin-Converting Enzyme 2/antagonists & inhibitors
- Angiotensin-Converting Enzyme 2/chemistry
- Angiotensin-Converting Enzyme 2/genetics
- Angiotensin-Converting Enzyme 2/metabolism
- Antiviral Agents/chemistry
- Antiviral Agents/pharmacology
- Binding Sites
- COVID-19/virology
- Cell Line
- Disulfides/antagonists & inhibitors
- Disulfides/chemistry
- Disulfides/metabolism
- Dose-Response Relationship, Drug
- Humans
- Molecular Docking Simulation
- Nasal Mucosa/drug effects
- Nasal Mucosa/metabolism
- Nasal Mucosa/virology
- Oxidation-Reduction
- Phenyl Ethers/chemistry
- Phenyl Ethers/pharmacology
- Protein Binding
- Protein Conformation, alpha-Helical
- Protein Conformation, beta-Strand
- Protein Interaction Domains and Motifs
- Receptors, Virus/antagonists & inhibitors
- Receptors, Virus/chemistry
- Receptors, Virus/genetics
- Receptors, Virus/metabolism
- Recombinant Proteins/chemistry
- Recombinant Proteins/genetics
- Recombinant Proteins/metabolism
- SARS-CoV-2/drug effects
- SARS-CoV-2/genetics
- SARS-CoV-2/metabolism
- Spike Glycoprotein, Coronavirus/antagonists & inhibitors
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/metabolism
- Sulfhydryl Compounds/chemistry
- Sulfhydryl Compounds/pharmacology
- COVID-19 Drug Treatment
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Affiliation(s)
- Yunlong Shi
- Department of Chemistry, Scripps Research, Jupiter, FL 33458
| | - Ari Zeida
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay
| | - Caitlin E Edwards
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Michael L Mallory
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Santiago Sastre
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay
| | - Matías R Machado
- Protein Engineering Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Raymond J Pickles
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Ling Fu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Keke Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jing Yang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Ralph S Baric
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Richard C Boucher
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599;
| | - Rafael Radi
- Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas, Universidad de la República, Montevideo 11800, Uruguay;
| | - Kate S Carroll
- Department of Chemistry, Scripps Research, Jupiter, FL 33458;
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4
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Ma H, Li M, Yu T, Zhang H, Xiong M, Li F. Magnetic ZIF-8-Based Mimic Multi-enzyme System as a Colorimetric Biosensor for Detection of Aryloxyphenoxypropionate Herbicides. ACS Appl Mater Interfaces 2021; 13:44329-44338. [PMID: 34494423 DOI: 10.1021/acsami.1c11815] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/21/2023]
Abstract
In the present study, a magnetic mimic multi-enzyme system was developed by encapsulating the aryloxyphenoxypropionate (AOPP) herbicide hydrolase QpeH and alcohol oxidase (AOx) in zeolitic imidazolate framework (ZIF-8) nanocrystals with magnetic Fe3O4 nanoparticles (MNPs) to detect AOPP herbicides. The structural, protein loading capacity and loading ratio, porosity, and magnetic properties of QpeH/AOx@mZIF-8 were characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, nitrogen sorption, and vibrating sample magnetometry. An AOPP herbicide colorimetric biosensor made with QpeH/AOx@mZIF-8 had the highest sensitivity toward quizalofop-P-ethyl (QpE) with a limit of detection of 8.2 μM. This system was suitable to detect two other AOPP herbicides, including fenoxaprop-P-ethyl (FpE) and haloxyfop-P-methyl (HpE). The practical application of the biosensor was verified through quantitative analysis of QpE residues in industrial wastewater and field soils. Furthermore, QpeH/AOx@mZIF-8 exhibited excellent long-term storage stability (at least 50 days), easy separation by magnet, and reusability (at least 10 cycles), supporting its promising role in simple and low-cost detection of AOPP herbicides in real environmental samples.
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Affiliation(s)
- Hengyan Ma
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Mengya Li
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Ting Yu
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Hui Zhang
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Minghua Xiong
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
| | - Feng Li
- College of Life Sciences, Huaibei Normal University, Huaibei 235000, China
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5
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Garcia E, Luna I, Persad KL, Agopsowicz K, Jay DA, West FG, Hitt MM, Persad S. Inhibition of triple negative breast cancer metastasis and invasiveness by novel drugs that target epithelial to mesenchymal transition. Sci Rep 2021; 11:11757. [PMID: 34083676 PMCID: PMC8175347 DOI: 10.1038/s41598-021-91344-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 05/24/2021] [Indexed: 12/26/2022] Open
Abstract
Invasive breast cancer (BrCa) is predicted to affect 1 in 9 women in a lifetime;1 in 32 will die from this disease. The most aggressive forms of BrCa, basal-like/triple-negative phenotype (TNBC), are challenging to treat and result in higher mortality due high number of metastatic cases. There is a paucity of options for TNBC treatment, which highlights the need for additional innovative treatment approaches. NIH-III mice were injected in the abdominal mammary fat pad with luciferase-expressing derivative of the human TNBC cell line, MDA-MB-231 cells. Animals were gavage-fed with nitrofen at the doses of 1, 3 or 6 mg/kg/alternate days. However, several structural properties/components of nitrofen raise concerns, including its high lipophilicity (cLogP of nearly 5) and a potential toxophore in the form of a nitroarene group. Therefore, we developed analogues of nitrofen which lack the nitro group and/or have replaced the diaryl ether linker with a diarylamine that could allow modulation of polarity. In vitro anti-invasiveness activity of nitrofen analogues were evaluated by quantitative determination of invasion of MDA-MB-231-Luciferase cells through Matrigel using a Boyden chamber. Our in vivo data show that nitrofen efficiently blocks TNBC tumor metastasis. In vitro data suggest that this is not due to cytotoxicity, but rather is due to impairment of invasive capacity of the cells. Further, using an in vitro model of EMT, we show that nitrofen interferes with the process of EMT and promotes mesenchymal to epithelial transformation. In addition, we show that three of the nitrofen analogues significantly reduced invasive potential of TNBC cells, which may, at least partially, be attributed to the analogues' ability to promote mesenchymal to epithelial-like transformation of TNBC cells. Our study shows that nitrofen, and more importantly its analogues, are significantly effective in limiting the invasive potential of TNBC cell lines with minimal cytotoxic effect. Further, we demonstrate that nitrofen its analogues, are very effective in reversing mesenchymal phenotype to a more epithelial-like phenotype. This may be significant for the treatment of patients with mesenchymal-TNBC tumor subtype who are well known to exhibit high resistance to chemotherapy.
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Affiliation(s)
- Elizabeth Garcia
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, 3-020R Katz Group Centre for Pharmacy and Health Research, Edmonton, AB, T6G 2E1, Canada
| | - Ismat Luna
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, Canada
| | - Kaya L Persad
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, 3-020R Katz Group Centre for Pharmacy and Health Research, Edmonton, AB, T6G 2E1, Canada
| | - Kate Agopsowicz
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - David A Jay
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, 3-020R Katz Group Centre for Pharmacy and Health Research, Edmonton, AB, T6G 2E1, Canada
| | - Frederick G West
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, Canada
| | - Mary M Hitt
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Sujata Persad
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, 3-020R Katz Group Centre for Pharmacy and Health Research, Edmonton, AB, T6G 2E1, Canada.
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6
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Li TX, Meng DD, Zhang P, Wang Y, Zheng JQ, Chen ZF, Xu CP. Antibacterial and antioxidant metabolites from the insect-associated fungus Aspergillus fumigatus. Pak J Pharm Sci 2021; 34:1271-1276. [PMID: 34602399] [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: 06/13/2023]
Abstract
The research on bioactive secondary metabolites from Aspergillus fumigatus afforded six compounds, which were identified by mass spectrometer (MS) and nuclear magnetic resonance (NMR) spectroscopic analysis as cyclopyazonic acid (1), trypacidin A (2), asterric acid (3), methyl asterrate (4), demethylcitreoviranol (5), as well as (5-hydroxy-2-oxo-2H-pyran-4-yl) methyl acetate (6). Cyclopyazonic acid (1) was found to have potent antibacterial effects, especially against Bacillus licheniformis with minimal inhibitory concentration (MIC) value of 3.7μg/mL. Its antibacterial effects were possibly related to the olefinic acid group in the structure. Phenyl ether derivatives 3 and 4, and trypacidin A (2) also exhibited antimicrobial effects. In addition, compound 6 showed significant antioxidant effects with half maximal effective concentration (EC50) value of 10.2μM in the ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid) assay, which was better than the positive control.
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Affiliation(s)
- Tian-Xiao Li
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China/Collaborative Innovation Center of Food Production and Safety, Zhengzhou, Henan, PR China
| | - Dan-Dan Meng
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China
| | - Pu Zhang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China
| | - Ying Wang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China
| | - Jian-Qiang Zheng
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China
| | - Zhi-Fei Chen
- Technical Center, China Tobacco Guangxi Industrial Co. Ltd., Nanning, PR China
| | - Chun-Ping Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, PR China/ Collaborative Innovation Center of Food Production and Safety, Zhengzhou, Henan, PR China
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7
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Wang X, Wang A, Qiu L, Chen M, Lu A, Li G, Yang C, Xue W. Expedient Discovery for Novel Antifungal Leads Targeting Succinate Dehydrogenase: Pyrazole-4-formylhydrazide Derivatives Bearing a Diphenyl Ether Fragment. J Agric Food Chem 2020; 68:14426-14437. [PMID: 33216530 DOI: 10.1021/acs.jafc.0c03736] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [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 pyrazole-4-carboxamide scaffold containing a flexible amide chain has emerged as the molecular skeleton of highly efficient agricultural fungicides targeting succinate dehydrogenase (SDH). Based on the above vital structural features of succinate dehydrogenase inhibitors (SDHI), three types of novel pyrazole-4-formylhydrazine derivatives bearing a diphenyl ether moiety were rationally conceived under the guidance of a virtual docking comparison between bioactive molecules and SDH. Consistent with the virtual verification results of a molecular docking comparison, the in vitro antifungal bioassays indicated that the skeleton structure of title compounds should be optimized as an N'-(4-phenoxyphenyl)-1H-pyrazole-4-carbohydrazide scaffold. Strikingly, N'-(4-phenoxyphenyl)-1H-pyrazole-4-carbohydrazide derivatives 11o against Rhizoctonia solani, 11m against Fusarium graminearum, and 11g against Botrytis cinerea exhibited excellent antifungal effects, with corresponding EC50 values of 0.14, 0.27, and 0.52 μg/mL, which were obviously better than carbendazim against R. solani (0.34 μg/mL) and F. graminearum (0.57 μg/mL) as well as penthiopyrad against B. cinerea (0.83 μg/mL). The relative studies on an in vivo bioassay against R. solani, bioactive evaluation against SDH, and molecular docking were further explored to ascertain the practical value of compound 11o as a potential fungicide targeting SDH. The present work provided a non-negligible complement for the structural optimization of antifungal leads targeting SDH.
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Affiliation(s)
- Xiaobin Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - An Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lingling Qiu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Min Chen
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Aimin Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Guohua Li
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Chunlong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Xue
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
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8
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Zhao LX, Jiang MJ, Hu JJ, Zou YL, Cheng Y, Ren T, Gao S, Fu Y, Ye F. Design, Synthesis, and Herbicidal Activity of Novel Diphenyl Ether Derivatives Containing Fast Degrading Tetrahydrophthalimide. J Agric Food Chem 2020; 68:3729-3741. [PMID: 32125836 DOI: 10.1021/acs.jafc.0c00947] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [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: 05/18/2023]
Abstract
To seek new protoporphyrinogen oxidase (PPO) inhibitors with better biological activity, a series of novel diphenyl ether derivatives containing tetrahydrophthalimide were designed based on the principle of substructure splicing and bioisomerization. PPO inhibition experiments exhibited that 6c is the most potential compound, with the half-maximal inhibitory concentration (IC50) value of 0.00667 mg/L, showing 7 times higher activity than Oxyfluorfen (IC50 = 0.0426 mg/L) against maize PPO and similar herbicidal activities to Oxyfluorfen in weeding experiments in greenhouses and field weeding experiments. In view of the inspected bioactivities, the structure-activity relationship (SAR) of this series of compounds was also discussed. Crop selection experiments demonstrate that compound 6c is safe for soybeans, maize, rice, peanuts, and cotton at a dose of 300 g ai/ha. Accumulation analysis experiments showed that the accumulation of 6c in some crops (soybeans, peanuts, and cotton) was significantly lower than Oxyfluorfen. Current work suggests that compound 6c may be developed as a new herbicide candidate in fields.
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Affiliation(s)
- Li-Xia Zhao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Mao-Jun Jiang
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Jia-Jun Hu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue-Li Zou
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Yuan Cheng
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Tao Ren
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
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9
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Kim J, Ahn H, Han BC, Shin H, Kim JC, Jung EM, Kim J, Yang H, Lee J, Kang SG, Lee SH, Lee GS. Obovatol inhibits NLRP3, AIM2, and non-canonical inflammasome activation. Phytomedicine 2019; 63:153019. [PMID: 31302317 DOI: 10.1016/j.phymed.2019.153019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/01/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Obovatol, a biphenolic chemical originating from Magnolia obovata, has been utilized as a traditional medicine for the treatment of inflammatory diseases. Inflammasome induces maturation of inflammatory cytokines in response to intracellular danger signals, and its dysregulation induces inflammatory diseases. PURPOSE The effect of obovatol on inflammasome activation has not been reported, although its anti-inflammatory properties have been studied. STUDY DESIGN/METHODS Obovatol was treated to macrophages with inflammasome triggers, and secretions of interleukin (IL)-1β, IL-18, and caspase-1 were measured as readouts of inflammasome activation. In addition, Asc pyroptosome formation, caspase-1 activity, and mitochondrial reactive oxygen species (ROS) production were analyzed in mechanical studies. Anti-inflammasome properties of obovatol were confirmed in an animal model. RESULTS Obovatol inhibited NLRP3, AIM2, and non-canonical inflammasomes through inhibition of Asc pyroptosome formation and mitochondrial ROS generation. In addition, obovatol disrupted the priming step of inflammasome activation and inhibited transcription of inflammatory cytokines. In mice, obovatol attenuated serum IL-1β elevation in response to monosodium urate crystals. CONCLUSION Obovatol is suggested as an inhibitor of NLRP3, AIM2, and non-canonical inflammasomes.
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Affiliation(s)
- Jeongeun Kim
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Huijeong Ahn
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Byung-Cheol Han
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea; Korea Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, 34337, Republic of Korea
| | - Hyunjung Shin
- Korea Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, 34337, Republic of Korea
| | - Jin-Chul Kim
- Natural Products Research Center, Korea Institute of Science and Technology, Gangneung, 25451, Republic of Korea
| | - Eui-Man Jung
- Laboratory of Veterinary Biochemistry and Molecular Biology College of Veterinary Medicine, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Juyeol Kim
- College of Pharmacy, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Heejung Yang
- College of Pharmacy, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Jeonghyun Lee
- Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Seung Goo Kang
- Division of Biomedical Convergence, College of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Seung-Ho Lee
- Korea Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, 34337, Republic of Korea
| | - Geun-Shik Lee
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea.
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10
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Abbasi A, Hosseini S, Somwangthanaroj A, Mohamad AA, Kheawhom S. Poly(2,6-Dimethyl-1,4-Phenylene Oxide)-Based Hydroxide Exchange Separator Membranes for Zinc-Air Battery. Int J Mol Sci 2019; 20:ijms20153678. [PMID: 31357565 PMCID: PMC6696484 DOI: 10.3390/ijms20153678] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 06/26/2019] [Revised: 07/25/2019] [Accepted: 07/25/2019] [Indexed: 11/16/2022] Open
Abstract
Rechargeable zinc–air batteries are deemed as the most feasible alternative to replace lithium–ion batteries in various applications. Among battery components, separators play a crucial role in the commercial realization of rechargeable zinc–air batteries, especially from the viewpoint of preventing zincate (Zn(OH)42−) ion crossover from the zinc anode to the air cathode. In this study, a new hydroxide exchange membrane for zinc–air batteries was synthesized using poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) as the base polymer. PPO was quaternized using three tertiary amines, including trimethylamine (TMA), 1-methylpyrolidine (MPY), and 1-methylimidazole (MIM), and casted into separator films. The successful synthesis process was confirmed by proton nuclear magnetic resonance and Fourier-transform infrared spectroscopy, while their thermal stability was examined using thermogravimetric analysis. Besides, their water/electrolyte absorption capacity and dimensional change, induced by the electrolyte uptake, were studied. Ionic conductivity of PPO–TMA, PPO–MPY, and PPO–MIM was determined using electrochemical impedance spectroscopy to be 0.17, 0.16, and 0.003 mS/cm, respectively. Zincate crossover evaluation tests revealed very low zincate diffusion coefficient of 1.13 × 10−8, and 0.28 × 10−8 cm2/min for PPO–TMA, and PPO–MPY, respectively. Moreover, galvanostatic discharge performance of the primary batteries assembled using PPO–TMA and PPO–MPY as initial battery tests showed a high specific discharge capacity and specific power of ~800 mAh/gZn and 1000 mWh/gZn, respectively. Low zincate crossover and high discharge capacity of these separator membranes makes them potential materials to be used in zinc–air batteries.
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Affiliation(s)
- Ali Abbasi
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Computational Process Engineering Research Laboratory, Chulalongkorn University, Bangkok 10330, Thailand
| | - Soraya Hosseini
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Computational Process Engineering Research Laboratory, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anongnat Somwangthanaroj
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ahmad Azmin Mohamad
- School of Materials and Mineral Resources Engineering, Universiti of Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia
| | - Soorathep Kheawhom
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
- Computational Process Engineering Research Laboratory, Chulalongkorn University, Bangkok 10330, Thailand.
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11
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Sebinelli HG, Borin IA, Ciancaglini P, Bolean M. Topographical and mechanical properties of liposome surfaces harboring Na,K-ATPase by means of atomic force microscopy. Soft Matter 2019; 15:2737-2745. [PMID: 30868144 DOI: 10.1039/c9sm00040b] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, we obtained unprecedented AFM images of the Na,K-ATPase (NKA) pump after being reconstituted into DPPC and DPPC:DPPE liposomes. The mechanical properties observed in the phase images were associated with protrusions correlated to NKA microdomains, which are the darker areas seen in the AFM phase images. Protrusions in the DPPC-NKA proteoliposomes ranged from 38 to 115 nm, with 74 ± 21 nm diameter and 2.1 ± 1.4 nm height. DPPC:DPPE-NKA proteoliposomes showed protrusions from 21 to 78 nm, with 38 ± 16 nm diameter and 0.7 ± 0.5 nm height. We have estimated the presence of annular lipids in the microdomains considering that the areas of the protrusions should contain αβ oligomers and annular phospholipids. For DPPC-NKA proteoliposomes, we hypothesize that 40 phospholipids surround an (αβ)2 dimer and 46 phospholipids are present for the DPPC:DPPE-NKA proteoliposomes in an αβ monomer. Catalytic activity measurements of both lipid compositions of proteoliposomes harboring NKA provide strong evidence regarding the protein orientation in the biomembrane. AFM data suggest that DPPC-NKA proteoliposomes are also rightside-out protein orientated, where the protrusions have an average height of 2.1 nm, while for DPPC:DPPE-NKA proteoliposomes, the majority of the protein reconstituted should be inside-out orientated, where the protrusions' average height is 0.5 nm. This result corroborates with the enzymatic analysis, where 61% and 91% of the enzymatic activity was recovered, respectively. Thus, a new application of AFM as a tool for the determination of topological features of protrusions in proteoliposomes has been brought to the scientific community, in addition to revealing the distinct catalytic orientation of enzymes present in the biomembranes model.
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Affiliation(s)
- H G Sebinelli
- Universidade de São Paulo, FFCLRP, Ribeirão Preto, São Paulo, Brazil
| | - I A Borin
- Universidade de São Paulo, FFCLRP, Ribeirão Preto, São Paulo, Brazil
| | - P Ciancaglini
- Universidade de São Paulo, FFCLRP, Ribeirão Preto, São Paulo, Brazil
| | - M Bolean
- Universidade de São Paulo, FFCLRP, Ribeirão Preto, São Paulo, Brazil
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12
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Gao YH, Zheng R, Li J, Kong WS, Liu X, Ye L, Mi QL, Kong WS, Zhou M, Yang GY, Hu QF, Du G, Yang HY, Li XM. Three new diphenyl ether derivatives from the fermentation products of an endophytic fungus Phomopsis fukushii. J Asian Nat Prod Res 2019; 21:316-322. [PMID: 29338435 DOI: 10.1080/10286020.2017.1421177] [Citation(s) in RCA: 4] [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: 10/01/2017] [Accepted: 12/20/2017] [Indexed: 06/07/2023]
Abstract
Three new diphenyl ethers (1-3), together with four known isopentylated diphenyl ethers derivatives (4-7), were isolated from the fermentation products of an endophytic fungus Phomopsis fukushii. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1-3 were evaluated for their anti-methicillin-resistant Staphylococcus aureus (anti-MRSA) activity. The results revealed that compounds 1 and 2 showed strong inhibitions with inhibition zone diameters (IZD) of 20.2 ± 2.5 mm and 17.9 ± 2.2 mm, respectively. Compound 3 also showed good inhibition with IZD 15.2 ± 1.8 mm. The IZD data of compound 1 is close to that of positive control with IZD 21.9 ± 2.1 mm.
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Affiliation(s)
- Yu-Hong Gao
- a Department of Clinical Laboratories , The First People's Hospital of Yunnan Province , Kunming 650032 , China
| | - Rui Zheng
- a Department of Clinical Laboratories , The First People's Hospital of Yunnan Province , Kunming 650032 , China
| | - Jing Li
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Wei-Song Kong
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Xin Liu
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Lin Ye
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Qi-Li Mi
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Wei-Song Kong
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Min Zhou
- b Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education , Yunnan Minzu University , Kunming 650031 , China
| | - Guang-Yu Yang
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
| | - Qiu-Fen Hu
- b Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education , Yunnan Minzu University , Kunming 650031 , China
| | - Gang Du
- b Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education , Yunnan Minzu University , Kunming 650031 , China
| | - Hai-Ying Yang
- b Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education , Yunnan Minzu University , Kunming 650031 , China
| | - Xue-Mei Li
- c Key Laboratory of Tobacco Chemistry of Yunnan Province , China Tobacco Yunnan Industrial Co., Ltd , Kunming 650231 , China
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13
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Pinguet CE, Ryll E, Steinschulte AA, Hoffmann JM, Brugnoni M, Sybachin A, Wöll D, Yaroslavov A, Richtering W, Plamper FA. PEO-b-PPO star-shaped polymers enhance the structural stability of electrostatically coupled liposome/polyelectrolyte complexes. PLoS One 2019; 14:e0210898. [PMID: 30653618 PMCID: PMC6336312 DOI: 10.1371/journal.pone.0210898] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/03/2019] [Indexed: 11/18/2022] Open
Abstract
We propose a strategy to counteract the salt-driven disassembly of multiliposomal complexes made by electrostatic co-assembly of anionic small unilamellar liposomes and cationic star-shaped polyelectrolytes (made of quaternized poly(dimethylaminoethyl methacrylate) (qPDMAEMA100)3.1). The combined action of (qPDMAEMA100)3.1 and a nonionic star-shaped polymer (PEO12-b-PPO45)4, which comprises diblock copolymer arms uniting a poly(ethylene oxide) PEO inner block and a poly(propylene oxide) PPO terminal block, leads to a stabilization of these complexes against disintegration in saline solutions. Hereby, the anchoring of the PPO terminal blocks to the lipid bilayer and the bridging between several liposomes are at the origin of the promoted structural stability. Two-focus fluorescence correlation spectroscopy verifies the formation of multiliposomal complexes with (PEO12-b-PPO45)4. The polyelectrolyte and the amphiphilic polymer work synergistically, as the joint action still assures some membrane integrity, which is not seen for the mere (PEO12-b-PPO45)4-liposome interaction alone.
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Affiliation(s)
- Camille E. Pinguet
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Esther Ryll
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | | | - Jón M. Hoffmann
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Monia Brugnoni
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Andrey Sybachin
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
| | - Dominik Wöll
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Alexander Yaroslavov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Felix A. Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Freiberg, Germany
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14
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Qi Y, Yu T, Xu J, Wan P, Ma Y, Zhu J, Li Y, Gong H, Luo Q, Zhu D. FDISCO: Advanced solvent-based clearing method for imaging whole organs. Sci Adv 2019; 5:eaau8355. [PMID: 30746463 PMCID: PMC6357753 DOI: 10.1126/sciadv.aau8355] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/28/2018] [Indexed: 05/11/2023]
Abstract
Various optical clearing methods have emerged as powerful tools for deep biological imaging. Organic solvent-based clearing methods, such as three-dimensional imaging of solvent-cleared organs (3DISCO), present the advantages of high clearing efficiency and size reduction for panoptic imaging of large samples such as whole organs and even whole bodies. However, 3DISCO results in a rapid quenching of endogenous fluorescence, which has impeded its application. Here, we propose an advanced method named FDISCO to overcome this limitation. FDISCO can effectively preserve the fluorescence of various fluorescent probes and can achieve a long storage time of months while retaining potent clearing capability. We used FDISCO for high-resolution imaging and reconstruction of neuronal and vascular networks. Moreover, FDISCO is compatible with labeling by multiple viruses and enables fine visualization of neurons with weak fluorescence labeling in the whole brain. FDISCO represents an effective alternative to the three-dimensional mapping of whole organs and can be extensively used in biomedical studies.
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Affiliation(s)
- Yisong Qi
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tingting Yu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jianyi Xu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Peng Wan
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yilin Ma
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jingtan Zhu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yusha Li
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Gong
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qingming Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Dan Zhu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China
- MoE Key Laboratory for Biomedical Photonics, Collaborative Innovation Center for Biomedical Engineering, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Corresponding author.
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15
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Zhang P, Li X, Yuan XL, Du YM, Wang BG, Zhang ZF. Antifungal Prenylated Diphenyl Ethers from Arthrinium arundinis, an Endophytic Fungus Isolated from the Leaves of Tobacco ( Nicotiana tabacum L.). Molecules 2018; 23:E3179. [PMID: 30513840 PMCID: PMC6320909 DOI: 10.3390/molecules23123179] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 11/29/2018] [Accepted: 11/29/2018] [Indexed: 01/12/2023] Open
Abstract
An endophytic fungus Arthrinium arundinis TE-3 was isolated and purified from the fresh leaves of cultivated tobacco (Nicotiana tabacum L.). Chemical investigation on this fungal strain afforded three new prenylated diphenyl ethers (1-3) as well as three known analogues (4-6). Structure elucidation of the isolated compounds was carried out by analysis of 1D and 2D nuclear magnetic resonance (NMR) and high-resolution electrospray ionization mass spectroscopy (HRESIMS) spectra, as well as by comparison of those data with literature data. The absolute configuration of the stereogenic center at C-8 in 1 was assigned by comparison of the experimental and calculated ECD spectra. Compounds 1 and 2 showed selective antifungal activity against Mucor hiemalis with minimum inhibitory concentration (MIC) values of 8 and 4 μg/mL, respectively. Compounds 5 and 6 exhibited inhibitory activity against Alteraria alternata with an MIC value of 8 μg/mL. In the cytotoxic assay, 2, 5, and 6 displayed moderate in vitro cytotoxicity against the human monocytic cell line (THP-1 cell line), with IC50 values of 40.2, 28.3, and 25.9 μM, respectively. This study indicated that endophytic fungi possess great potential for exploring new bioactive secondary metabolites.
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Affiliation(s)
- Peng Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Xin Li
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Xiao-Long Yuan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Yong-Mei Du
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Bin-Gui Wang
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Zhong-Feng Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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16
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Zhong Y, Li D, Zhu X, Huang W, Peng P. Solvent effects on quantitative analysis of brominated flame retardants with Soxhlet extraction. Environ Geochem Health 2018; 40:1955-1964. [PMID: 28523590 DOI: 10.1007/s10653-017-9979-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 01/25/2017] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
Reliable quantifications of brominated flame retardants (BFRs) not only ensure compliance with laws and regulations on the use of BFRs in commercial products, but also is key for accurate risk assessments of BFRs. Acetone is a common solvent widely used in the analytical procedure of BFRs, but our recent study found that acetone can react with some BFRs. It is highly likely that such reactions can negatively affect the quantifications of BFRs in environmental samples. In this study, the effects of acetone on the extraction yields of three representative BFRs [i.e., decabrominated diphenyl ether (decaBDE), hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA)] were evaluated in the Soxhlet extraction (SE) system. The results showed that acetone-based SE procedure had no measureable effect for the recovery efficiencies of decaBDE but could substantially lower the extraction yields for both TBBPA and HBCD. After 24 h of extraction, the recovery efficiencies of TBBPA and HBCD by SE were 93 and 78% with acetone, 47 and 70% with 3:1 acetone:n-hexane, and 82 and 94% with 1:1 acetone:n-hexane, respectively. After 72 h of extraction, the extraction efficiencies of TBBPA and HBCD decreased to 68 and 55% with acetone, 0 and 5% with 3:1 acetone/n-hexane mixtures, and 0 and 13% with 1:1 acetone/n-hexane mixtures, respectively. The study suggested that the use of acetone alone or acetone-based mixtures should be restricted in the quantitative analysis of HBCD and TBBPA. We further evaluated nine alternative solvents for the extraction of the three BFRs. The result showed that diethyl ether might be reactive with HBCD and may not be considered as the alternative to acetone used solvents for the extraction of HBCD.
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Affiliation(s)
- Yin Zhong
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou, 510640, China.
| | - Dan Li
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xifen Zhu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weilin Huang
- Department of Environmental Sciences, Rutgers, The State University of New Jersey, 14, College Farm Road, New Brunswick, NJ, 08901, USA
| | - Ping'an Peng
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou, 510640, China
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17
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Li ZX, Wang XF, Ren GW, Yuan XL, Deng N, Ji GX, Li W, Zhang P. Prenylated Diphenyl Ethers from the Marine Algal-Derived Endophytic Fungus Aspergillus tennesseensis. Molecules 2018; 23:molecules23092368. [PMID: 30227613 PMCID: PMC6225247 DOI: 10.3390/molecules23092368] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/13/2018] [Accepted: 09/14/2018] [Indexed: 01/06/2023] Open
Abstract
Considerable attention has been paid to marine derived endophytic fungi, owing to their capacity to produce novel secondary metabolites with potent bioactivities. In this study, two new compounds with a prenylated diphenyl ether structure—diorcinol L (1) and (R)-diorcinol B (2)—were isolated from the marine algal-derived endophytic fungus Aspergillus tennesseensis, along with seven known compounds: (S)-diorcinol B (3), 9-acetyldiorcinol B (4), diorcinol C (5), diorcinol D (6), diorcinol E (7), diorcinol J (8), and a dihydrobenzofuran derivative 9. Their structures were elucidated by extensive NMR spectroscopy studies. Compound 2 represents the first example of an R-configuration in the prenylated moiety. All these isolated compounds were examined for antimicrobial and cytotoxic activities. Compounds 1–9 exhibited antimicrobial activities against some human- and plant-pathogenic microbes with MIC values ranging from 2 to 64 μg/mL. Moreover, compound 9 displayed considerable inhibitory activity against the THP-1 cell line in vitro, with an IC50 value of 7.0 μg/mL.
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Affiliation(s)
- Zhao-Xia Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong 266003, China.
| | - Xiu-Fang Wang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Guang-Wei Ren
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Xiao-Long Yuan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Ning Deng
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Gui-Xia Ji
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
| | - Wei Li
- College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong 266003, China.
| | - Peng Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.
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18
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Wu Y, Chen Y, Huang X, Pan Y, Liu Z, Yan T, Cao W, She Z. α-Glucosidase Inhibitors: Diphenyl Ethers and Phenolic Bisabolane Sesquiterpenoids from the Mangrove Endophytic Fungus Aspergillus flavus QQSG-3. Mar Drugs 2018; 16:md16090307. [PMID: 30200400 PMCID: PMC6165285 DOI: 10.3390/md16090307] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 08/20/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 02/04/2023] Open
Abstract
Two new diphenyl ethers (1 and 2) and four new phenolic bisabolane sesquiterpenoids (3–6), together with five known related derivatives, were isolated from the culture of the endophytic fungus Aspergillus flavus QQSG-3 obtained from a fresh branch of Kandelia obobata, which was collected from Huizhou city in the province of Guangdong, China. The structures of compounds 1–6 were determined by analyzing NMR and HRESIMS data. The absolute configurations of 5 and 6 were assigned by comparing their experimental ECD spectra with those reported for similar compounds in the literature. All isolates were evaluated for their α-glucosidase inhibitory activity, of which compounds 3, 5, 10, and 11 showed strong inhibitory effects with IC50 values in the range of 1.5–4.5 μM.
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Affiliation(s)
- Yingnan Wu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Yan Chen
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510006, China.
| | - Xishan Huang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Yahong Pan
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Zhaoming Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
- State Key Laboratory of Applied Microbiology, Southern China, Guangdong Institute of Microbiology, Guangzhou 510075, China.
| | - Tao Yan
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Wenhao Cao
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510006, China.
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19
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Abstract
Inhibitors of phosphodiesterases (PDEs) have been widely studied as therapeutics for the treatment of human diseases, but improvement of inhibitor selectivity is still desirable for the enhancement of inhibitor potency. Here, we report identification of a water-containing subpocket as a PDE4-specific pocket for inhibitor binding. We designed against the pocket and synthesized two enantiomers of PDE4 inhibitor Zl-n-91. The ( S)-Zl-n-91 enantiomer showed IC50 values of 12 and 20 nM for the catalytic domains of PDE4D2 and PDE4B2B, respectively, selectivity several thousand-fold greater than those of other PDE families, and potent neuroprotection activities. Crystal structures of the PDE4D2 catalytic domain in complex with each Zl-n-91 enantiomer revealed that ( S)-Zl-n-91 but not ( R)-Zl-n-91 formed a hydrogen bond with the bound water in the pocket, thus explaining its higher affinity. The structural superposition between the PDE families revealed that this water-containing subpocket is unique to PDE4 and thus valuable for the design of PDE4 selective inhibitors.
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Affiliation(s)
- Xiaoqing Feng
- School of Pharmaceutical Engineering and life Sciences, Changzhou University, Changzhou, Jiangsu, 213164, PR China
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA
| | - Huanchen Wang
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA
- Signal Transduction Laboratory, NIEHS/NIH, 111 Alexander Drive, Research Triangle Park, NC, 27709, USA
| | - Mengchun Ye
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA
- School of Chemical and Environmental Engineering, Wuyi University, Jiangmen, Guangdong 529020, PR China
| | - Xue-Tao Xu
- School of Chemical and Environmental Engineering, Wuyi University, Jiangmen, Guangdong 529020, PR China
| | - Ying Xu
- Departments of Behavioral Medicine & Psychiatry and Physiology, Pharmacology, Neuroscience, Rockefeller Neurosciences Institute, West Virginia University Health Sciences Center, Morgantown, WV 26506-9137, USA
| | | | - Han-Ting Zhang
- Departments of Behavioral Medicine & Psychiatry and Physiology, Pharmacology, Neuroscience, Rockefeller Neurosciences Institute, West Virginia University Health Sciences Center, Morgantown, WV 26506-9137, USA
| | - Guoqiang Song
- School of Pharmaceutical Engineering and life Sciences, Changzhou University, Changzhou, Jiangsu, 213164, PR China
| | - Hengming Ke
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA
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20
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Kim TK, Kim JE, Youn UJ, Han SJ, Kim IC, Cho CG, Yim JH. Total Syntheses of Lobaric Acid and Its Derivatives from the Antarctic Lichen Stereocaulon alpinum. J Nat Prod 2018; 81:1460-1467. [PMID: 29878768 DOI: 10.1021/acs.jnatprod.8b00227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The first total syntheses of the natural products lobaric acid (1) and its derivatives isolated from the Antarctic lichen Stereocaulon alpinum are reported in this study. Lobarin (3), with a pseudodepsidone structure, was synthesized first in 11 steps by utilizing an Ullmann aryl ether coupling reaction, and lobaric acid was synthesized in an additional three steps by a seven-membered lactonization reaction. Various derivatives were also obtained from the prepared lobaric acid, and the synthetic compounds exhibited significant PTP1B inhibitory activities.
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Affiliation(s)
- Tai Kyoung Kim
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
- Department of Chemistry , Hanyang University , 222 Wangshimni-ro, Seongdong-gu, Seoul 04763 , Republic of Korea
| | - Joung Eun Kim
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
| | - Ui Joung Youn
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
| | - Se Jong Han
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
| | - Il-Chan Kim
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
| | - Cheon-Gyu Cho
- Department of Chemistry , Hanyang University , 222 Wangshimni-ro, Seongdong-gu, Seoul 04763 , Republic of Korea
| | - Joung Han Yim
- Division of Life Sciences , Korea Polar Research Institute, KOPRI , Incheon 406-840 , Republic of Korea
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21
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Pytka K, Głuch-Lutwin M, Kotańska M, Waszkielewicz A, Kij A, Walczak M. Single Administration of HBK-15-a Triple 5-HT 1A, 5-HT 7, and 5-HT 3 Receptor Antagonist-Reverses Depressive-Like Behaviors in Mouse Model of Depression Induced by Corticosterone. Mol Neurobiol 2018; 55:3931-3945. [PMID: 28550529 PMCID: PMC5884906 DOI: 10.1007/s12035-017-0605-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 02/14/2017] [Accepted: 05/08/2017] [Indexed: 02/06/2023]
Abstract
Studies suggest that the blockade of 5-HT1A, 5-HT7, and 5-HT3 receptor may increase the speed of antidepressant response. 1-[(2,6-Dimethylphenoxy)ethoxyethyl]-4-(2-methoxyphenyl)piperazine hydrochloride (HBK-14) and 1-[(2-chloro-6-methylphenoxy)ethoxyethyl]-4-(2-methoxyphenyl)piperazine hydrochloride (HBK-15), dual 5-HT1A and 5-HT7 antagonists, showed significant antidepressant- and anxiolytic-like properties in our previous tests in rodents. In this study, we aimed to investigate their antidepressant potential using mouse model of corticosterone-induced depression. We chose sucrose preference test, forced swim test, and elevated plus maze to determine anhedonic-, antidepressant-, and anxiolytic-like activities. We also evaluated the influence of the active compound on brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) levels in the hippocampus. Moreover, for both compounds, we performed biofunctional (5-HT3 receptor) and pharmacokinetic studies. We found that HBK-14 and HBK-15 were potent 5-HT3 receptor antagonists. HBK-14 (2.5 mg/kg) and HBK-15 (1.25 mg/kg) after intravenous (i.v.) and intraperitoneal (i.p.) administration permeated the blood-brain barrier with brain/plasma ratio lower than 1. The bioavailability of studied compounds after i.p. administration was 15% for HBK-14 and 54% for HBK-15. Chronic administration of HBK-15 (1.25 mg/kg) and fluoxetine (10 mg/kg) protected corticosterone-treated mice from anhedonic-, depressive-, and anxiety-like behaviors, as well as decreases in BDNF and NGF levels in the hippocampus. HBK-14 (2.5 mg/kg) counteracted anxiety-like behaviors in corticosterone-treated mice. Single administration of HBK-15 (1.25 mg/kg) and ketamine (1 mg/kg) reversed depression-like behavior and regulated decreased BDNF level in the hippocampus in corticosterone-treated mice. Our results suggest that simultaneous blockade of serotonergic 5-HT1A, 5-HT7, and 5-HT3 receptors might accelerate antidepressant response.
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Affiliation(s)
- Karolina Pytka
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland.
| | - Monika Głuch-Lutwin
- Department of Pharmacobiology, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Magdalena Kotańska
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Anna Waszkielewicz
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Agnieszka Kij
- Chair and Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
- Jagiellonian Centre for Experimental Therapeutics, Bobrzyńskiego 14, 30-348, Krakow, Poland
| | - Maria Walczak
- Chair and Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
- Jagiellonian Centre for Experimental Therapeutics, Bobrzyńskiego 14, 30-348, Krakow, Poland
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22
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Milovanovic V, Buha A, Matovic V, Curcic M, Vucinic S, Nakano T, Antonijevic B. Oxidative stress and renal toxicity after subacute exposure to decabrominated diphenyl ether in Wistar rats. Environ Sci Pollut Res Int 2018; 25:7223-7230. [PMID: 26676538 DOI: 10.1007/s11356-015-5921-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 02/27/2015] [Accepted: 12/03/2015] [Indexed: 06/05/2023]
Abstract
Fully brominated diphenyl ether (BDE-209) is a flame retardant widely used in plastics and textiles. Because of its high persistence, humans are exposed to it continuously, mainly via dust ingestion. We investigated effects of BDE-209 on renal function and oxidative stress development in the kidney after subacute exposure in rats. Five groups of animals were given by oral gavage 31.25-500 mg BDE-209/kg b.w./day for 28 days, and relative kidney weight, serum urea and creatinine, and oxidative stress parameters in the kidney were determined. Benchmark-dose approach was used for dose response modeling. Serum creatinine was increased, while results obtained for serum urea were inconclusive. Relative kidney weight was not affected by BDE-209. Kidney reduced glutathione was elevated, while superoxide dismutase activity was not changed after BDE-209 treatment. Also, levels of thiobarbituric acid reactive substances (TBARS) were increased and total -SH groups were decreased, which indicated oxidative imbalance. The critical effect dose (CED)/CEDL ratios for the effects on TBARS and total -SH groups indicated estimated CEDs for these markers can be used in risk assessment of BDE-209. Our study results have shown that a relatively low dose of BDE-209 affects kidney function and that oxidative stress is one of the mechanisms of its nephrotoxicity.
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Affiliation(s)
- Vesna Milovanovic
- Chemicals Department, Ministry of Agriculture and Environmental Protection of Republic of Serbia, Omladinskih brigada 1, 11070, Belgrade, Serbia.
| | - Aleksandra Buha
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Vesna Matovic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Marijana Curcic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Slavica Vucinic
- National Poison Control Center, Military Medical Academy, Crnotravska 17, 11000, Belgrade, Serbia
| | - Takeshi Nakano
- Graduate School of Engineering, Osaka University, Yamadaoka 2-4, Suita, Japan
| | - Biljana Antonijevic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
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23
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Reveglia P, Savocchia S, Billones-Baaijens R, Cimmino A, Evidente A. Isolation of Phytotoxic Phenols and Characterization of a New 5-Hydroxymethyl-2-isopropoxyphenol from Dothiorella vidmadera, a Causal Agent of Grapevine Trunk Disease. J Agric Food Chem 2018; 66:1760-1764. [PMID: 29397696 DOI: 10.1021/acs.jafc.7b05248] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Polyphenols were characterized from Dothiorella vidmadera (DAR78993), which was isolated from a grapevine in Australia. In total, six polyphenols were isolated including a new polyphenol characterized by a spectroscopic method (essentially NMR and HR ESIMS) as 5-hydroxymethyl-2-isopropoxyphenol. Tyrosol, benzene-1,2,4-triol, resorcinol, 3-(hydroxymethyl)phenol, and protocatechuic alcohol, the latter being the main metabolite, were also isolated. Although these are already known as naturally occurring compounds in microorganisms and plants, this is the first time they have been isolated from fungal organisms involved in grapevine trunk disease. When assayed on tomato seedlings, all the compounds show similar phytotoxic effects. However, when assayed on grapevine leaves (Vitis vinifera cv Shiraz), resorcinol was the most toxic compound, followed by protocatechuic alcohol and 5-hydroxymethyl-2-isopropoxyphenol.
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Affiliation(s)
- Pierluigi Reveglia
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Sandra Savocchia
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Regina Billones-Baaijens
- National Wine and Grape Industry Centre, School of Agricultural and Wine Sciences, Charles Sturt University , Locked Bag 588 Wagga, Wagga, NSW 2678, Australia
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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24
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Liu N, Ni S, Ragauskas AJ, Meng X, Hao N, Fu Y. Laccase-mediated functionalization of chitosan with 4-hexyloxyphenol enhances antioxidant and hydrophobic properties of copolymer. J Biotechnol 2018; 269:8-15. [PMID: 29408201 DOI: 10.1016/j.jbiotec.2018.01.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 09/17/2017] [Revised: 01/14/2018] [Accepted: 01/24/2018] [Indexed: 12/24/2022]
Abstract
An effective method to functionalize chitosan with 4-hexyloxyphenol (HP) under homogeneous reaction conditions was developed using laccase as the catalyst. The resulting copolymer was characterized for chemical structure, grafted-HP content, surface morphology, thermal stability, antioxidant capacity, hydrophobic properties and tensile strength. Solid-state 13C NMR spectrum confirmed the incorporation of HP onto chitosan. X-ray diffraction (XRD) showed a decrease in the degree of crystallinity for laccase/HP treated chitosan compared to pure chitosan. The grafted-HP content in laccase/HP-treated chitosan first increased and then declined with increase of the initial HP/chitosan ratio. A heterogeneous surface with spherical particles on the laccase/HP treated chitosan was observed by environmental scanning electron microscopy (ESEM) and scanning probe microscopy (SPM). The laccase/HP treatment of chitosan improved the thermal stability of copolymer. More significantly, the HP functionalized chitosan showed greatly improved ABTS+ and DPPH radicals scavenging capacity, compared with pure chitosan. The hydrophobicity property of the HP functionalized chitosan also significantly increased although its tensile strength decreased. This new type of composite with double functionalities (i.e., antioxidant and hydrophobic) could potentially be used as food packaging materials or coating agents.
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Affiliation(s)
- Na Liu
- College of Paper and Plant Resources Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China; Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA.
| | - Shuzhen Ni
- College of Paper and Plant Resources Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Arthur J Ragauskas
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
| | - Xianzhi Meng
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
| | - Naijia Hao
- Department of Chemical & Biomolecular Engineering, University of Tennessee Knoxville, Knoxville, TN 37996, USA
| | - Yingjuan Fu
- College of Paper and Plant Resources Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
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25
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Yi B, Jahangir A, Evans AK, Briggs D, Ravina K, Ernest J, Farimani AB, Sun W, Rajadas J, Green M, Feinberg EN, Pande VS, Shamloo M. Discovery of novel brain permeable and G protein-biased beta-1 adrenergic receptor partial agonists for the treatment of neurocognitive disorders. PLoS One 2017; 12:e0180319. [PMID: 28746336 PMCID: PMC5529018 DOI: 10.1371/journal.pone.0180319] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/14/2017] [Indexed: 01/09/2023] Open
Abstract
The beta-1 adrenergic receptor (ADRB1) is a promising therapeutic target intrinsically involved in the cognitive deficits and pathological features associated with Alzheimer's disease (AD). Evidence indicates that ADRB1 plays an important role in regulating neuroinflammatory processes, and activation of ADRB1 may produce neuroprotective effects in neuroinflammatory diseases. Novel small molecule modulators of ADRB1, engineered to be highly brain permeable and functionally selective for the G protein with partial agonistic activity, could have tremendous value both as pharmacological tools and potential lead molecules for further preclinical development. The present study describes our ongoing efforts toward the discovery of functionally selective partial agonists of ADRB1 that have potential therapeutic value for AD and neuroinflammatory disorders, which has led to the identification of the molecule STD-101-D1. As a functionally selective agonist of ADRB1, STD-101-D1 produces partial agonistic activity on G protein signaling with an EC50 value in the low nanomolar range, but engages very little beta-arrestin recruitment compared to the unbiased agonist isoproterenol. STD-101-D1 also inhibits the tumor necrosis factor α (TNFα) response induced by lipopolysaccharide (LPS) both in vitro and in vivo, and shows high brain penetration. Other than the therapeutic role, this newly identified, functionally selective, partial agonist of ADRB1 is an invaluable research tool to study mechanisms of G protein-coupled receptor signal transduction.
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MESH Headings
- Adrenergic beta-1 Receptor Agonists/chemistry
- Adrenergic beta-1 Receptor Agonists/pharmacokinetics
- Adrenergic beta-1 Receptor Agonists/therapeutic use
- Alzheimer Disease/drug therapy
- Alzheimer Disease/metabolism
- Animals
- Brain/metabolism
- CHO Cells
- Cell Line, Tumor
- Cells, Cultured
- Cricetinae
- Cricetulus
- Crystallography, X-Ray
- Drug Discovery
- GTP-Binding Proteins/metabolism
- Humans
- Magnetic Resonance Spectroscopy
- Male
- Mice, Inbred C57BL
- Models, Chemical
- Models, Molecular
- Molecular Structure
- Neurocognitive Disorders/drug therapy
- Neurocognitive Disorders/metabolism
- Permeability
- Phenyl Ethers/chemistry
- Phenyl Ethers/pharmacokinetics
- Phenyl Ethers/therapeutic use
- Propanolamines/chemistry
- Propanolamines/pharmacokinetics
- Propanolamines/therapeutic use
- Protein Binding
- Rats, Sprague-Dawley
- Receptors, Adrenergic, beta-1/chemistry
- Receptors, Adrenergic, beta-1/metabolism
- Structure-Activity Relationship
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Affiliation(s)
- Bitna Yi
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Alam Jahangir
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Andrew K. Evans
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Denise Briggs
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Kristine Ravina
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Jacqueline Ernest
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Amir B. Farimani
- Department of Chemistry, Stanford University, Stanford, California, United States of America
| | - Wenchao Sun
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Michael Green
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
| | - Evan N. Feinberg
- Department of Chemistry, Stanford University, Stanford, California, United States of America
| | - Vijay S. Pande
- Department of Chemistry, Stanford University, Stanford, California, United States of America
| | - Mehrdad Shamloo
- Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California, United States of America
- * E-mail:
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26
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Sumilat DA, Yamazaki H, Endo K, Rotinsulu H, Wewengkang DS, Ukai K, Namikoshi M. A new biphenyl ether derivative produced by Indonesian ascidian-derived Penicillium albobiverticillium. J Nat Med 2017; 71:776-779. [PMID: 28550651 DOI: 10.1007/s11418-017-1094-5] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/12/2017] [Indexed: 01/06/2023]
Abstract
A new biphenyl ether derivative, 2-hydroxy-6-(2'-hydroxy-3'-hydroxymethyl-5-methylphenoxy)-benzoic acid (1), was isolated together with the known benzophenone derivative, monodictyphenone (2), from a culture broth of Indonesian ascidian-derived Penicillium albobiverticillium TPU1432 by solvent extraction, ODS column chromatography, and preparative HPLC (ODS). The structure of 1 was elucidated based on NMR experiments. Compound 2 exhibited moderate inhibitory activities against protein tyrosine phosphatase (PTP) 1B, T cell PTP (TCPTP), and CD45 tyrosine phosphatase (CD45), whereas compound 1 modestly inhibited CD45 activity.
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Affiliation(s)
- Deiske A Sumilat
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan.
| | - Kotaro Endo
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
| | - Henki Rotinsulu
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Defny S Wewengkang
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Kazuyo Ukai
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
| | - Michio Namikoshi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
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27
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Shi T, Qi J, Shao CL, Zhao DL, Hou XM, Wang CY. Bioactive Diphenyl Ethers and Isocoumarin Derivatives from a Gorgonian-Derived Fungus Phoma sp. (TA07-1). Mar Drugs 2017; 15:md15060146. [PMID: 28587090 PMCID: PMC5484096 DOI: 10.3390/md15060146] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 03/25/2017] [Revised: 05/11/2017] [Accepted: 05/23/2017] [Indexed: 11/16/2022] Open
Abstract
Three new diphenyl ether derivatives-phomaethers A-C (1-3) and five known compounds-including a diphenyl ether analog, 2,3'-dihydroxy-4-methoxy-5',6-dimethyl diphenyl ether (4); and four isocoumarin derivatives, diaportinol (5), desmethyldiaportinol (6), citreoisocoumarinol (7), and citreoisocoumarin (8)-were isolated from a gorgonian-derived fungus Phoma sp. (TA07-1). Their structures were elucidated by extensive spectroscopic investigation. The absolute configurations of 1 and 2 were determined by acid hydrolysis reactions. It was the first report to discover the diphenyl glycoside derivatives from coral-derived fungi. Compounds 1, 3, and 4 showed selective strong antibacterial activity against five pathogenic bacteria with the minimum inhibiting concentration (MIC) values and minimum bactericidal concentration (MBC) values between 0.156 and 10.0 μM.
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Affiliation(s)
- Ting Shi
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Jun Qi
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Dong-Lin Zhao
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Xue-Mei Hou
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
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Seo KH, Lee DY, Lee YG, Baek NI. Dineolignans of 3-O-4' diphenyl ether-type from fruits of Magnolia obovata. Phytochemistry 2017; 136:133-140. [PMID: 28139299 DOI: 10.1016/j.phytochem.2017.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 12/16/2016] [Accepted: 01/07/2017] [Indexed: 06/06/2023]
Abstract
Seven dineolignans of the 3-O-4' diphenyl ether-type (obovatalignans C-I, respectively), were isolated from fruits of Magnolia obovata through repeated silica gel (SiO2), octadecyl SiO2, and Sep-Pak chromatographies. Their chemical structures were determined based on various spectroscopic methods including NMR, HR-MS, IR, specific rotation, and CD spectrometry. Especially, compounds 1-5 include the relatively rare 1,4-benzodioxane ring moiety in the molecular structure.
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Affiliation(s)
- Kyeong-Hwa Seo
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea
| | - Dae-Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong, 369-873, Republic of Korea
| | - Yeong-Geun Lee
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea
| | - Nam-In Baek
- Department of Oriental Medicine Biotechnology, Kyung Hee University, Yongin, 446-701, Republic of Korea.
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29
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Chao MN, Li C, Storey M, Falcone BN, Szajnman SH, Bonesi SM, Docampo R, Moreno SNJ, Rodriguez JB. Activity of Fluorine-Containing Analogues of WC-9 and Structurally Related Analogues against Two Intracellular Parasites: Trypanosoma cruzi and Toxoplasma gondii. ChemMedChem 2016; 11:2690-2702. [PMID: 27886451 PMCID: PMC5200956 DOI: 10.1002/cmdc.201600505] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 10/20/2016] [Indexed: 11/10/2022]
Abstract
Two obligate intracellular parasites, Trypanosoma cruzi, the agent of Chagas disease, and Toxoplasma gondii, an agent of toxoplasmosis, upregulate the mevalonate pathway of their host cells upon infection, which suggests that this host pathway could be a potential drug target. In this work, a number of compounds structurally related to WC-9 (4-phenoxyphenoxyethyl thiocyanate), a known squalene synthase inhibitor, were designed, synthesized, and evaluated for their effect on T. cruzi and T. gondii growth in tissue culture cells. Two fluorine-containing derivatives, the 3-(3-fluorophenoxy)- and 3-(4-fluorophenoxy)phenoxyethyl thiocyanates, exhibited half-maximal effective concentration (EC50 ) values of 1.6 and 4.9 μm, respectively, against tachyzoites of T. gondii, whereas they showed similar potency to WC-9 against intracellular T. cruzi (EC50 values of 5.4 and 5.7 μm, respectively). In addition, 2-[3- (phenoxy)phenoxyethylthio]ethyl-1,1-bisphosphonate, which is a hybrid inhibitor containing 3-phenoxyphenoxy and bisphosphonate groups, has activity against T. gondii proliferation at sub-micromolar levels (EC50 =0.7 μm), which suggests a combined inhibitory effect of the two functional groups.
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Affiliation(s)
- María N. Chao
- M. N. Chao, Dr. B. N. Falcone, Dr. S. H. Szajnman, Prof. Dr. J. B. Rodriguez, Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
| | - Catherine Li
- C. Li, M. Storey, Prof. Dr. R. Docampo, Prof. Dr. S. N. J. Moreno, Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens, Georgia, 30602, USA
| | - Melissa Storey
- C. Li, M. Storey, Prof. Dr. R. Docampo, Prof. Dr. S. N. J. Moreno, Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens, Georgia, 30602, USA
| | - Bruno N. Falcone
- M. N. Chao, Dr. B. N. Falcone, Dr. S. H. Szajnman, Prof. Dr. J. B. Rodriguez, Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
| | - Sergio H. Szajnman
- M. N. Chao, Dr. B. N. Falcone, Dr. S. H. Szajnman, Prof. Dr. J. B. Rodriguez, Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
| | - Sergio M. Bonesi
- Prof. Dr. S. M. Bonesi, Departamento de Química Orgánica and CIHIDECAR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
| | - Roberto Docampo
- C. Li, M. Storey, Prof. Dr. R. Docampo, Prof. Dr. S. N. J. Moreno, Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens, Georgia, 30602, USA
| | - Silvia N. J. Moreno
- C. Li, M. Storey, Prof. Dr. R. Docampo, Prof. Dr. S. N. J. Moreno, Center for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens, Georgia, 30602, USA
| | - Juan B. Rodriguez
- M. N. Chao, Dr. B. N. Falcone, Dr. S. H. Szajnman, Prof. Dr. J. B. Rodriguez, Departamento de Química Orgánica and UMYMFOR (CONICET–FCEyN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
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30
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Shi H, Braun A, Wang L, Liang SH, Vasdev N, Ritter T. Synthesis of (18) F-Difluoromethylarenes from Aryl (Pseudo) Halides. Angew Chem Int Ed Engl 2016; 55:10786-90. [PMID: 27491349 PMCID: PMC5189681 DOI: 10.1002/anie.201604106] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/03/2016] [Indexed: 11/11/2022]
Abstract
A general method for the synthesis of [(18) F]difluoromethylarenes from [(18) F]fluoride for radiopharmaceutical discovery is reported. The method is practical, operationally simple, tolerates a wide scope of functional groups, and enables the labeling of a variety of arenes and heteroarenes with radiochemical yields (RCYs, not decay-corrected) from 10 to 60 %. The (18) F-fluorination precursors are readily prepared from aryl chlorides, bromides, iodides, and triflates. Seven (18) F-difluoromethylarene drug analogues and radiopharmaceuticals including Claritin, fluoxetine (Prozac), and [(18) F]DAA1106 were synthesized to show the potential of the method for applications in PET radiopharmaceutical design.
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Affiliation(s)
- Hang Shi
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Augustin Braun
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Steven H Liang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Department of Radiology, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
| | - Neil Vasdev
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Department of Radiology, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA.
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany.
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31
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Abstract
A series of triclosan mimic diphenyl ether derivatives have been synthesized and evaluated for their in vitro antitubercular activity against Mycobacterium tuberculosis H37Rv. The binding mode of the compounds at the active site of enoyl-acyl carrier protein reductase of M. tuberculosis has been explored. Among them, compound 10b was found to possess antitubercular activity (minimum inhibitory concentration =12.5 µg/mL) comparable to triclosan. All the synthesized compounds exhibited low levels of cytotoxicity against Vero and HepG2 cell lines, and three compounds 10a, 10b, and 10c had a selectivity index more than 10. Compound 10b was also evaluated for log P, pKa, human liver microsomal stability, and % protein binding, in order to probe its druglikeness. Based on the antitubercular activity and druglikeness profile, it may be concluded that compound 10b could be a lead for future development of antitubercular drugs.
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Affiliation(s)
- Sidhartha S Kar
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, India
| | - Varadaraj Bhat G
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, India
| | - Praveen PN Rao
- School of Pharmacy, Health Sciences Campus, University of Waterloo, Waterloo, ON, Canada
| | - Vishnu P Shenoy
- Department of Microbiology, Kasturba Medical College, Manipal
| | - Indira Bairy
- Melaka-Manipal Medical College, Manipal University, Manipal, India
| | - G Gautham Shenoy
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, India
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32
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Morikawa A. Comparison of Properties among Dendritic and Hyperbranched Poly(ether ether ketone)s and Linear Poly(ether ketone)s. Molecules 2016; 21:molecules21020219. [PMID: 26891288 PMCID: PMC6274044 DOI: 10.3390/molecules21020219] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/28/2016] [Accepted: 02/05/2016] [Indexed: 12/04/2022] Open
Abstract
Poly(ether ether ketone) dendrimers and hyperbranched polymers were prepared from 3,5-dimethoxy-4′-(4-fluorobenzoyl)diphenyl ether and 3,5-dihydroxy-4′-(4-fluorobenzoyl)diphenyl ether through aromatic nucleophilic substitution reactions. 1-(tert-Butyldimethylsiloxy)-3,5-bis(4-fluorobenzoyl)benzene was polycondensed with bisphenols, followed by cleavage of the protective group to form linear poly(ether ketone)s having the same hydroxyl groups in the side chains as the chain ends of the dendrimer and hyperbranched polymers. Their properties, such as solubilities, reduced viscosities, and thermal properties, were compared with one another. Similar comparisons were also carried out among the corresponding methoxy group polymers, and the size of the molecules was shown to affect the properties.
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Affiliation(s)
- Atsushi Morikawa
- Department Biomolecular Functional Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan.
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33
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Xue J, Kannan K. Novel Finding of Widespread Occurrence and Accumulation of Bisphenol A Diglycidyl Ethers (BADGEs) and Novolac Glycidyl Ethers (NOGEs) in Marine Mammals from the United States Coastal Waters. Environ Sci Technol 2016; 50:1703-1710. [PMID: 26800265 DOI: 10.1021/acs.est.5b04650] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bisphenol A diglycidyl ether (BADGE)- and bisphenol F diglycidyl ether (BFDGE)-based epoxy resins have a broad range of applications, including serving as inner coatings of food and beverage cans and as protective coatings in marine construction. Prior to this study, no studies had examined the occurrence and bioaccumulation of BADGEs or BFDGEs in aquatic organisms. In this study, BADGE, BFDGE, and nine of their derivatives were determined in 121 tissue (liver, kidney, blubber, and brain) samples from eight species of marine mammals collected from the U.S. coastal waters of Florida, California, Washington, and Alaska. BADGE·2HCl was the predominant compound found in the majority (78.5%) of the marine mammal tissues analyzed, at concentrations of up to 2950 ng/g (wet weight (wt)) found in the liver of a sea otter from Kachemak Bay, Alaska. The measured concentrations of BADGE·2HCl in marine mammals were on the order of hundreds of nanograms per gram tissue, which are some of the highest concentrations ever reported for this compound in biota. Males contained greater concentrations of BADGE·2HCl than did females. BADGE·2HCl also was found in the brain tissues of sea otters. Trace levels of BADGE·2HCl were found in the livers of polar bears from Alaska, which suggested that BADGEs are widely distributed in the oceanic environment.
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Affiliation(s)
- Jingchuan Xue
- Wadsworth Center, New York State Department of Health , Albany, New York 12201, United States
- Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany , Albany, New York 12222, United States
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health , Albany, New York 12201, United States
- Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany , Albany, New York 12222, United States
- Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, 21589 Saudi Arabia
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34
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Jermann S, Ortner F, Rajendran A, Mazzotti M. Absence of experimental evidence of a delta-shock in the system phenetole and 4-tert-butylphenol on Zorbax 300SB-C18. J Chromatogr A 2015; 1425:116-28. [PMID: 26614175 DOI: 10.1016/j.chroma.2015.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 09/10/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 11/18/2022]
Abstract
We investigate the system consisting of phenetole (PNT) and 4-tert-butylphenol (TBP) in methanol-water (63:37 v:v) on a Zorbax 300SB-C18 column by characterising single component isotherms, by performing a large number of binary experiments of different types and by describing the experiments through simulations carried out using a novel, rather powerful competitive adsorption isotherm, that we call the generalized bi-Langmuir isotherm. This system is of great interest because it was previously reported to yield a new type of transition in nonlinear chromatography, the so-called delta-shock. Such transition had been discovered earlier through a theoretical analysis and confirmed by detailed simulations. The initial aim of this work was to reach a satisfactory agreement between delta-shock experiments and corresponding numerical simulations. In the course of this work however, a number of inconsistencies in the interpretation of the previous experimental results were highlighted and explained. This led to a new experimental campaign, which is reported here and has allowed to reach two important conclusions: (1) The binary system PNT-TBP mentioned above does not exhibit a delta-shock; the spike in the UV profile, which has previously been interpreted as an experimental evidence of the delta-shock, results from liquid-liquid phase separation within the chromatographic column. (2) The same system exhibits a rather peculiar behavior in breakthrough and displacement experiments, which could be well described using the generalized bi-Langmuir isotherm.
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Affiliation(s)
- Simon Jermann
- Institute of Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Franziska Ortner
- Institute of Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Arvind Rajendran
- Faculty of Engineering, Department of Chemical and Materials Engineering, University of Alberta, 9107-116 Street, Edmonton, AB T6G 2V4, Canada
| | - Marco Mazzotti
- Institute of Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland.
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35
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Zhao DL, Shao CL, Zhang Q, Wang KL, Guan FF, Shi T, Wang CY. Azaphilone and Diphenyl Ether Derivatives from a Gorgonian-Derived Strain of the Fungus Penicillium pinophilum. J Nat Prod 2015; 78:2310-2314. [PMID: 26291474 DOI: 10.1021/acs.jnatprod.5b00575] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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
Three new azaphilone derivatives, pinophilins D-F (1-3), and one new diphenyl ether derivative, hydroxypenicillide (10), together with nine known compounds (4-9, 11-13), were isolated from the gorgonian-derived fungus Penicillium pinophilum XS-20090E18. Their structures including absolute configurations were determined by spectroscopic data, chemical conversions, the ECD exciton chirality method, and ECD calculations. Compounds 10-13 exhibited inhibitory activity against the larval settlement of the barnacle Balanus amphitrite at nontoxic concentrations. Compounds 10 and 11 showed cytotoxicity against Hep-2, RD, and HeLa cell lines.
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Affiliation(s)
| | | | - Qiang Zhang
- College of Science, Northwest A&F University , Yangling 712100, People's Republic of China
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36
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Mondal AN, Dai C, Pan J, Zheng C, Hossain MM, Khan MI, Wu L, Xu T. Novel Pendant Benzene Disulfonic Acid Blended SPPO Membranes for Alkali Recovery: Fabrication and Properties. ACS Appl Mater Interfaces 2015; 7:15944-15954. [PMID: 26146932 DOI: 10.1021/acsami.5b04018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To reconcile the trade-off between separation performance and availability of desired material for cation exchange membranes (CEMs), we designed and successfully prepared a novel sulfonated aromatic backbone-based cation exchange precursor named sodium 4,4'-(((((3,3'-disulfo-[1,1'-biphenyl]-4,4'-diyl)bis(oxy)) bis(4,1-phenylene))bis(azanediyl))bis(methylene))bis(benzene-1,3-disulfonate) [DSBPB] from 4,4'-bis(4-aminophenoxy)-[1,1'-biphenyl]-3,3'-disulfonic acid [BAPBDS] by a three-step procedure that included sulfonation, Michael condensation followed by reduction. Prepared DSBPB was used to blend with sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO) to get CEMs for alkali recovery via diffusion dialysis. Physiochemical properties and electrochemical performance of prepared membranes can be tuned by varying the dosage of DSBPB. All the thermo-mechanical properties like DMA and TGA were investigated along with water uptake (WR), ion exchange capacity (IEC), dimensional stability, etc. The effect of DSBPB was discussed in brief in connection with alkali recovery and ion conducting channels. The SPPO/DSBPB membranes possess both high water uptake as well as ion exchange capacity with high thermo-mechanical stability. At 25 °C the dialysis coefficients (UOH) appeared to be in the range of 0.0048-0.00814 m/h, whereas the separation factor (S) ranged from 12.61 to 36.88 when the membranes were tested for base recovery in Na2WO4/NaOH waste solution. Prepared membranes showed much improved DD performances compared to traditional SPPO membrane and possess the potentiality to be a promising candidate for alkali recovery via diffusion dialysis.
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Affiliation(s)
- Abhishek N Mondal
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Chunhua Dai
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jiefeng Pan
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Chunlei Zheng
- ‡Hefei Chemjoy Polymer Materials Co. Ltd., Hefei 230601, P. R. China
| | - Md Masem Hossain
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Muhammad Imran Khan
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Liang Wu
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Tongwen Xu
- †CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, P. R. China
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37
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Zhang J, Kiser PD, Badiee M, Palczewska G, Dong Z, Golczak M, Tochtrop GP, Palczewski K. Molecular pharmacodynamics of emixustat in protection against retinal degeneration. J Clin Invest 2015; 125:2781-94. [PMID: 26075817 DOI: 10.1172/jci80950] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 05/12/2015] [Indexed: 01/24/2023] Open
Abstract
Emixustat is a visual cycle modulator that has entered clinical trials as a treatment for age-related macular degeneration (AMD). This molecule has been proposed to inhibit the visual cycle isomerase RPE65, thereby slowing regeneration of 11-cis-retinal and reducing production of retinaldehyde condensation byproducts that may be involved in AMD pathology. Previously, we reported that all-trans-retinal (atRAL) is directly cytotoxic and that certain primary amine compounds that transiently sequester atRAL via Schiff base formation ameliorate retinal degeneration. Here, we have shown that emixustat stereoselectively inhibits RPE65 by direct active site binding. However, we detected the presence of emixustat-atRAL Schiff base conjugates, indicating that emixustat also acts as a retinal scavenger, which may contribute to its therapeutic effects. Using agents that lack either RPE65 inhibitory activity or the capacity to sequester atRAL, we assessed the relative importance of these 2 modes of action in protection against retinal phototoxicity in mice. The atRAL sequestrant QEA-B-001-NH2 conferred protection against phototoxicity without inhibiting RPE65, whereas an emixustat derivative incapable of atRAL sequestration was minimally protective, despite direct inhibition of RPE65. These data indicate that atRAL sequestration is an essential mechanism underlying the protective effects of emixustat and related compounds against retinal phototoxicity. Moreover, atRAL sequestration should be considered in the design of next-generation visual cycle modulators.
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38
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Xue J, Venkatesan AK, Wu Q, Halden RU, Kannan K. Occurrence of Bisphenol A Diglycidyl Ethers (BADGEs) and Novolac Glycidyl Ethers (NOGEs) in Archived Biosolids from the U.S. EPA's Targeted National Sewage Sludge Survey. Environ Sci Technol 2015; 49:6538-6544. [PMID: 25922885 DOI: 10.1021/acs.est.5b01115] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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
Epoxy resins incorporating bisphenol A diglycidyl ether (BADGE) and novolac glycidyl ether (NOGE) are used in a wide range of applications, including adhesives, structural and electrical laminates. However, little is known about the occurrence of BADGE, NOGE, and their derivatives in the environment. Using liquid chromatography-tandem mass spectrometry, BADGE, bisphenol F glycidyl ether (BFDGE), 3-ring NOGE, and eight of their derivatives (BADGE·2 H2O, BADGE·H2O, BADGE·HCl·H2O, BADGE·2 HCl, BADGE·HCl, BFDGE·2 H2O, and BFDGE·2 HCl) were determined in archived biosolid samples collected from 68 wastewater treatment plants (WWTPs) from the northeastern, midwestern, western, and southern regions of the USA. BADGE·2 H2O was the most frequently detected (DR = 99%) and the most abundant compound found (median: 93.6 ng/g dry weight [dw]) in this family. The highest total concentrations of target chemicals, ranging from 83.6 to 2490 ng/g dw, were found in biosolids collected from the northeastern United States. The sum of geometric mean (GM) concentration of BADGE, NOGE, and their derivatives in biosolids increased with the treatment capacity of WWTPs. Based on the measured concentrations in biosolids and predicted mass in wastewater, it was estimated that approximately 3.5% of the total production of BADGEs was emitted through WWTP discharges.
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Affiliation(s)
- Jingchuan Xue
- †Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, New York 12201, United States
| | - Arjun K Venkatesan
- ‡Center for Environmental Security, The Biodesign Institute, Global Security Initiative, Arizona State University, Tempe, Arizona 85287, United States
| | - Qian Wu
- †Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, New York 12201, United States
| | - Rolf U Halden
- ‡Center for Environmental Security, The Biodesign Institute, Global Security Initiative, Arizona State University, Tempe, Arizona 85287, United States
| | - Kurunthachalam Kannan
- †Wadsworth Center, New York State Department of Health, and Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, New York 12201, United States
- §Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 22254, Saudi Arabia
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Shao Y, Xia Q, Liu X, Lu G, Wang Y. Pd/Nb2O5/SiO2 catalyst for the direct hydrodeoxygenation of biomass-related compounds to liquid alkanes under mild conditions. ChemSusChem 2015; 8:1761-1767. [PMID: 25876904 DOI: 10.1002/cssc.201500053] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 02/12/2015] [Indexed: 06/04/2023]
Abstract
A simple Pd-loaded Nb2 O5 /SiO2 catalyst was prepared for the hydrodeoxygenation of biomass-related compounds to alkanes under mild conditions. Niobium oxide dispersed in silica (Nb2 O5 /SiO2 ) as the support was prepared by the sol-gel method and characterized by various techniques, including N2 adsorption, XRD, NH3 temperature-programmed desorption (TPD), TEM, and energy-dispersive X-ray spectroscopy (EDAX) atomic mapping. The characterization results showed that the niobium oxide species were amorphous and well dispersed in silica. Compared to commercial Nb2 O5 , Nb2 O5 /SiO2 has significantly more active niobium oxide species exposed on the surface. Under mild conditions (170 °C, 2.5 MPa), Pd/10 %Nb2 O5 /SiO2 was effective for the hydrodeoxygenation reactions of 4-(2-furyl)-3-buten-2-one (aldol adduct of furfural with acetone), palmitic acid, tristearin, and diphenyl ether (model compounds of microalgae oils, vegetable oils, and lignin), which gave high yields (>94 %) of alkanes with little CC bond cleavage. More importantly, owing to the significant promotion effect of NbOx species on CO bond cleavage and the mild reaction conditions, the CC cleavage was considerably restrained, and the catalyst showed an excellent activity and stability for the hydrodeoxygenation of palmitic acid with almost no decrease in hexadecane yield (94-95 %) in a 150 h time-on-stream test.
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Affiliation(s)
- Yi Shao
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, No. 130 Meilong Road, Shanghai (PR China), Fax: (+86) 21-64253824
| | - Qineng Xia
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, No. 130 Meilong Road, Shanghai (PR China), Fax: (+86) 21-64253824
| | - Xiaohui Liu
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, No. 130 Meilong Road, Shanghai (PR China), Fax: (+86) 21-64253824
| | - Guanzhong Lu
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, No. 130 Meilong Road, Shanghai (PR China), Fax: (+86) 21-64253824.
| | - Yanqin Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, No. 130 Meilong Road, Shanghai (PR China), Fax: (+86) 21-64253824.
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40
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Hui H, Wei L, Zhentao L, Xiangen H. A green-emitting Cu complex for oxygen-sensing purpose: synthesis, characterization and photophysical features. Spectrochim Acta A Mol Biomol Spectrosc 2015; 142:271-278. [PMID: 25706596 DOI: 10.1016/j.saa.2015.02.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 10/07/2014] [Revised: 12/08/2014] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
In the present work, a green-emitting Cu(I) complex [Cu(BT-Et)(POP)]BF4 was synthesized and fully characterized, where BT-Et=4-(1-ethyl-1H-benzo[d]imidazol-2-yl)thiazole, POP=bis(2-(diphenylphosphanyl)phenyl) ether, respectively. An ethyl group was connected onto the diamine ligand to breach π-π attraction within solid [Cu(BT-Et)(POP)]BF4, favoring O2 molecule attack and sensitivity improvement. Its molecular identity was confirmed by single crystal analysis and theoretical calculation. [Cu(BT-Et)(POP)]BF4 emitted long-lived green emission peaking at 521nm upon photoexcitation which was vulnerable towards O2 molecule, making itself a potential oxygen sensing material. [Cu(BT-Et)(POP)]BF4 was then doped into a silica supporting matrix MCM-41. The resulting composite samples showed sensing behavior towards O2 molecule, with short response time of 10s and sensitivity of 5.56.
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Affiliation(s)
- Han Hui
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
| | - Li Wei
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
| | - Liu Zhentao
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
| | - Han Xiangen
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
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41
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Librando V, Accolla ML, Minniti Z, Pappalardo M, Castelli F, Cascio O, Sarpietro MG. Calorimetric evidence of interaction of brominated flame retardants with membrane model. Environ Toxicol Pharmacol 2015; 39:1154-1160. [PMID: 25929984 DOI: 10.1016/j.etap.2015.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 04/02/2015] [Accepted: 04/04/2015] [Indexed: 06/04/2023]
Abstract
The presence of polybrominated flame retardants in the environment seems to be increasing in the past decade. Considering the toxic effects of these pollutants, it is important evaluating the potential interaction with biological membranes for a risk assessment. In this study low and high brominated biphenyls and biphenyl ethers were used to investigate their interaction with biological membrane models constituted by liposomes, using differential scanning calorimetry (DSC) technique. The medium influence on membrane absorption was also assessed. The findings indicate that membrane interaction is controlled by compound structural characteristics. The membrane absorption is allowed by lipophilic medium; instead hydrophilic medium prevents membrane permeation.
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Affiliation(s)
- Vito Librando
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, Catania 95125, Italy
| | - Maria Lorena Accolla
- Dipartimento di Scienze della Salute, Università "Magna Græcia" di Catanzaro, Campus Universitario "S. Venuta", Viale S. Venuta, Germaneto, CZ 88100, Italy
| | - Zelica Minniti
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, Catania 95125, Italy
| | - Matteo Pappalardo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, Catania 95125, Italy
| | - Francesco Castelli
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, Catania 95125, Italy
| | - Orazio Cascio
- Dipartimento di Anatomia, Biologia e Genetica, Medicina Legale, Neuroscienze, Patologia Diagnostica, Igiene e SanitàPubblica (G. F. Ingrassia), Università degli Studi di Catania, Via S. Sofia 87, 95123 Catania, Italy
| | - Maria Grazia Sarpietro
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, Catania 95125, Italy.
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Li J, Wang ZY, Wu QY, Yang GF. Design, synthesis and insecticidal activity of novel 1,1-dichloropropene derivatives. Pest Manag Sci 2015; 71:694-700. [PMID: 24817508 DOI: 10.1002/ps.3827] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 04/10/2014] [Revised: 04/29/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Pyridalyl is a highly active insecticide against lepidopterous larvae, with a novel chemical structure not related to any other existing insecticide. To discover new pyridalyl analogues with high activity against resistant pests, a series of 1,1-dichloropropene derivatives bearing structurally diverse substituted heterocycle rings in place of the pyridine ring of pyridalyl were designed and synthesised. RESULTS All of the title compounds were confirmed by (1)H NMR, (13)C NMR and high-resolution mass spectra. Two representative compounds (Ic and IIa) were further characterised by X-ray diffraction analysis. In addition, bioassays showed that most of the newly synthesised compounds displayed good insecticidal activity against Prodenia litura. Further determination of LD50 values and field trials identified compound IIa as the most promising candidate, which produced a much better 14 day control effect against diamondback moths and longer duration of efficacy than pyridalyl, indicating its potential for further development as a new insecticide for the control of lepidopteran insects. CONCLUSION Compound IIa has great potential for further development as a new insecticide for the control of lepidopteran insects.
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Affiliation(s)
- Jun Li
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China
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Figueroa L, Jiménez C, Rodríguez J, Areche C, Chávez R, Henríquez M, de la Cruz M, Díaz C, Segade Y, Vaca I. 3-Nitroasterric Acid Derivatives from an Antarctic Sponge-Derived Pseudogymnoascus sp. Fungus. J Nat Prod 2015; 78:919-923. [PMID: 25732560 DOI: 10.1021/np500906k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [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
Four new nitroasterric acid derivatives, pseudogymnoascins A-C (1-3) and 3-nitroasterric acid (4), along with the two known compounds questin and pyriculamide, were obtained from the cultures of a Pseudogymnoascus sp. fungus isolated from an Antarctic marine sponge belonging to the genus Hymeniacidon. The structures of the new compounds were determined by extensive NMR and MS analyses. These compounds are the first nitro derivatives of the known fungal metabolite asterric acid. Several asterric acid derivatives isolated from other fungal strains have shown antibacterial and antifungal activities. However, the new compounds described in this work were inactive against a panel of bacteria and fungi (MIC > 64 μg/mL).
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Affiliation(s)
- Luis Figueroa
- †Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
| | - Carlos Jiménez
- ‡Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Jaime Rodríguez
- ‡Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Carlos Areche
- †Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
| | - Renato Chávez
- §Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Alameda 3363, Estación Central, Santiago, Chile
| | - Marlene Henríquez
- †Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
| | - Mercedes de la Cruz
- ⊥Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud, 18016 Armilla, Granada, Spain
| | - Caridad Díaz
- ⊥Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avenida del Conocimiento 34, Parque Tecnológico de Ciencias de la Salud, 18016 Armilla, Granada, Spain
| | - Yuri Segade
- ‡Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Inmaculada Vaca
- †Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
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Zhou QQ, Su RG, Bai Y, Zhang CS, Shi XY. [Characterization of Chromophoric dissolved organic matter (CDOM) in Zhoushan fishery using excitation-emission matrix spectroscopy (EEMs) and parallel factor analysis (PARAFAC)]. Huan Jing Ke Xue 2015; 36:163-171. [PMID: 25898660] [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
The composition, distribution characteristics and sources of chromophoric dissolved organic matter(CDOM) in Zhoushan Fishery in spring were evaluated by fluorescence excitation-emission matrix (EEM) combined with parallel factor analysis (EEMs-PARAFAC). Three humic-like components [C1 (330/420 nm)], C2 [(290) 365/440 nm] and C3 [(260) 370/490 nm)] and two protein-like components [C4(285/340 nm) and C5 (270/310 nm)] were identified by EEMs-PARAFAC. The horizontal distribution patterns of the five components were almost the same with only slight differences, showing decreasing trends with increasing distance from shore. In the surface and middle layers, the high value areas were located in the north of Hangzhou Bay estuary and the outlet of Xiazhimen channel, and the former's was higher in the surface layer while the latter's was higher in the middle layer. In the bottom layer, CDOM decreased gradiently from the inshore to offshore, with higher CDOM near Zhoushan Island. The distributions of fluorescence components showed an opposite trend with salinity, and no significant linear relationship with Chl-a concentration was found, which indicated that CDOM in the surface and middle layers were dominated by terrestrial input and human activities of Zhoushan Island and that of the bottom layer was attribute to human activities of Zhoushan Island. The vertical distribution of five fluorescent components along 30.5 degrees N transect showed a decreasing trend from the surface and middle layers to bottom layer with high values in inshore and offshore areas, which were correlated with the lower salinity and higher Chl-a concentration, respectively. On this transect, CDOM was mainly affected by Yangtze River input in coastal area but by bioactivities in offshore waters. Along the 30 degrees N transect, the vertical distribution patterns of CDOM were similar to those of 30.5 degrees N transect but there was a high value area in the bottom layer near the shore, attributing to the CDOM release from the marine sediment pore water to the water body because of physical force role like tidal, the underlying upwelling and so on. A strong correlation occurred between C1 and C3, C4, indicating that they had similar sources; a weak correlation was found between C1 and C2, C5, reflecting some differences among their sources. CDOM in Zhoushan Fishery in spring had low humification index (HIX) values, which reflected a low degree of humification, poor stability and a short resident time in the environment. For biological index (BIX), its higher values appeared in the offshore waters and the lower values occurred in the inshore area, reflecting a greater influence of human and biological activities, respectively.
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45
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Ömeroğlu S, Sanin FD. Fate and degradation kinetics of nonylphenol compounds in aerobic batch digesters. Water Res 2014; 64:1-12. [PMID: 25025176 DOI: 10.1016/j.watres.2014.06.033] [Citation(s) in RCA: 10] [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] [Received: 04/24/2014] [Revised: 06/19/2014] [Accepted: 06/22/2014] [Indexed: 06/03/2023]
Abstract
Nonylphenol (NP) compounds are toxic and persistent chemicals that are not fully degraded either in natural or engineered systems. Current knowledge indicates that these compounds concentrate in sewage sludge. Therefore, investigating the degradation patterns and types of metabolites formed during sludge treatment are important for land application of sewage sludge. Unfortunately, the information on the fate of nonylphenol compounds in sludge treatment is very limited. This study aims to investigate the biodegradation patterns of nonylphenol diethoxylate (NP2EO) in aerobic batch digesters. For this purpose, two NP2EO spiked and two control laboratory aerobic batch digesters were operated. The spiked digester contained 3 mg/L NP2EO in the whole reactor content. The compounds of interest (parent compound and expected metabolites) were extracted with sonication and analyzed by gas chromatography-mass spectrometry (GC-MS) as a function of time. Results showed that, following the day of spike, NP2EO degraded rapidly. The metabolites observed were nonylphenol monoethoxylate (NP1EO), NP and dominantly, nonylphenoxy acetic acid (NP1EC). The mass balance over the reactors indicated that the total mass spiked was highly accounted for by the products analyzed. The time dependent analysis indicated that the parent compound degradation and daughter product formation followed first order kinetics. The digester performance parameters analyzed (VS and COD reduction) indicated that the spike of NP2EO did not affect the digester performance.
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Affiliation(s)
- Seçil Ömeroğlu
- Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - F Dilek Sanin
- Department of Environmental Engineering, Middle East Technical University, Ankara 06800, Turkey.
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46
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Cai S, King JB, Du L, Powell DR, Cichewicz RH. Bioactive sulfur-containing sulochrin dimers and other metabolites from an Alternaria sp. isolate from a Hawaiian soil sample. J Nat Prod 2014; 77:2280-7. [PMID: 25265160 PMCID: PMC4208674 DOI: 10.1021/np5005449] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Polluxochrin (1) and dioschrin (2), two new dimers of sulochrin linked by thioether bonds, were purified from an Alternaria sp. isolate obtained from a Hawaiian soil sample. The structures of the two metabolites were established by NMR, mass spectrometry data, and X-ray analysis. Metabolite 1 was determined to be susceptible to intramolecular cyclization under aqueous conditions, resulting in the generation of 2 as well as another dimeric compound, castochrin (3). An additional nine new metabolites were also obtained, including four new pyrenochaetic acid derivatives (8-11), one new asterric acid analogue (13), and four new secalonic acid analogues (14-17). Bioassay analysis of these compounds revealed 1-3 displayed antimicrobial and weak cytotoxic activities.
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Affiliation(s)
- Shengxin Cai
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Jarrod B. King
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Lin Du
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Douglas R. Powell
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
| | - Robert H. Cichewicz
- Natural Products Discovery Group, Institute for Natural
Products
Applications and Research Technologies, and Department of Chemistry and Biochemistry,
Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, Oklahoma 73019-5251, United States
- E-mail: . Tel: 405-325-6969. Fax: 405-325-6111
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Baykara H, Ilhan S, Levent A, Salih Seyitoglu M, Özdemir S, Okumuş V, Öztomsuk A, Cornejo M. Synthesis, characterization and experimental, theoretical, electrochemical, antioxidant and antibacterial study of a new Schiff base and its complexes. Spectrochim Acta A Mol Biomol Spectrosc 2014; 130:270-279. [PMID: 24792202 DOI: 10.1016/j.saa.2014.03.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 03/02/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
A new Schiff base ligand was synthesized by reaction of salicylaldehyde with 1,6-bis(4-chloro-2-aminophenoxy)hexane. Then the Schiff base complexes were synthesized by metal salts and the Schiff base. The metal to ligand ratio of metal complexes was found to be 1:1. The Cu(II) complex is proposed to be square planar and the Co(II), Ni(II), Mn(II) and Zn(II) complexes are proposed to be tetrahedral geometry. The Ti(III) and V(III) complexes are proposed to be a capped octahedron in which a seventh ligand has been added to triangular face. The complexes are non-electrolytes as shown by their molar conductivities (ΛM). The structure of metal complexes is proposed from elemental analysis, FT-IR, UV-vis, magnetic susceptibility measurements, molar conductivity measurements, Mass Spectra and thermal gravimetric analysis. In addition antimicrobial and antioxidant studies, cyclic voltammetry of the complexes, theoretical 1H NMR and HOMO-LUMO energy calculations of the new di-functional ligand were done.
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Affiliation(s)
- Haci Baykara
- Faculty of Art and Science, Chemistry Department, Siirt University, Siirt, Turkey; Escuela Superior Politécnica del Litoral, ESPOL, CIDNA, Km 30.5 Via Perimetral, Guayaquil, Ecuador
| | - Salih Ilhan
- Faculty of Art and Science, Chemistry Department, Siirt University, Siirt, Turkey.
| | - Abdulkadir Levent
- Batman University, Health Services Vocational College, 72100 Batman, Turkey
| | - M Salih Seyitoglu
- Faculty of Art and Science, Chemistry Department, Siirt University, Siirt, Turkey
| | - Sadin Özdemir
- Faculty of Art and Science, Biology Department, Siirt University, Siirt, Turkey
| | - Veysi Okumuş
- Faculty of Art and Science, Biology Department, Siirt University, Siirt, Turkey
| | - Abdussamet Öztomsuk
- Faculty of Art and Science, Chemistry Department, Siirt University, Siirt, Turkey
| | - Mauricio Cornejo
- Escuela Superior Politécnica del Litoral, ESPOL, CIDNA, Km 30.5 Via Perimetral, Guayaquil, Ecuador
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Bianco A, Minella M, De Laurentiis E, Maurino V, Minero C, Vione D. Photochemical generation of photoactive compounds with fulvic-like and humic-like fluorescence in aqueous solution. Chemosphere 2014; 111:529-536. [PMID: 24997962 DOI: 10.1016/j.chemosphere.2014.04.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 01/20/2014] [Revised: 04/10/2014] [Accepted: 04/13/2014] [Indexed: 06/03/2023]
Abstract
The irradiation of L-tryptophan, L-tyrosine and 4-phenoxyphenol in aqueous solution produced compounds with similar fluorescence properties as humic substances, and with absorption spectra that were significantly extended into the UVA and visible regions compared to the starting compounds. The irradiated systems had photosensitizing properties, as proven by the photodegradation of 2,4,6-trimethylphenol and furfuryl alcohol (probes of excited triplet states and (1)O2, respectively). The described photochemical processes could constitute an additional pathway for the formation of humic substances in clear and shallow water bodies, which would be added to the complex network of reactions involving dissolved organic matter.
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Affiliation(s)
- Angelica Bianco
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1)
| | - Marco Minella
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1)
| | - Elisa De Laurentiis
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1)
| | - Valter Maurino
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1)
| | - Claudio Minero
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1)
| | - Davide Vione
- Università di Torino, Dipartimento di Chimica, Via Pietro Giuria 5, 10125 Torino, Italy(1); Università di Torino, Centro Interdipartimentale NatRisk, Via L. Da Vinci 44, 10095 Grugliasco (TO), Italy(2).
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Hussain H, Kock I, Al-Harrasi A, Abbas G, Rehman NU, Shah A, Badshah A, Rana UA, Noureen Z, Green IR, Draeger S, Schulz B, Krohn K. Coniothyren: a new phenoxyphenyl ether from the endophytic fungus, Coniothyrium sp. J Asian Nat Prod Res 2014; 16:1094-1098. [PMID: 25030414 DOI: 10.1080/10286020.2014.931843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Phytochemical investigation of the endophytic fungus Coniothyrium sp. resulted in the isolation of a new phenoxyphenyl ether, named coniothyren (1), and two known compounds, coniol (2) and (+)-epoxydon (3). The structure of the new compound was elucidated by detailed spectroscopic analysis, namely, (1)H NMR, (13)C NMR, COSY, HMQC, HMBC, and HR-EI-MS. Preliminary studies demonstrated that (+)-epoxydon (3) displayed good antibacterial and antialgal activities toward Bacillus megaterium and Chlorella fusca, respectively.
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Affiliation(s)
- Hidayat Hussain
- a Department of Chemistry , University of Paderborn , Paderborn 33098 , Germany
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50
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Schoenberger M, Damijonaitis A, Zhang Z, Nagel D, Trauner D. Development of a new photochromic ion channel blocker via azologization of fomocaine. ACS Chem Neurosci 2014; 5:514-8. [PMID: 24856540 PMCID: PMC4102962 DOI: 10.1021/cn500070w] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [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] [Indexed: 11/29/2022] Open
Abstract
Photochromic blockers of voltage gated ion channels are powerful tools for the control of neuronal systems with high spatial and temporal precision. We now introduce fotocaine, a new type of photochromic channel blocker based on the long-lasting anesthetic fomocaine. Fotocaine is readily taken up by neurons in brain slices and enables the optical control of action potential firing by switching between 350 and 450 nm light. It also provides an instructive example for "azologization", that is, the systematic conversion of an established drug into a photoswitchable one.
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Affiliation(s)
- Matthias Schoenberger
- Department
of Chemistry, Ludwig-Maximilians-Universität
München, Munich 81377, Germany
| | - Arunas Damijonaitis
- Department
of Chemistry, Ludwig-Maximilians-Universität
München, Munich 81377, Germany
| | - Zinan Zhang
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Daniel Nagel
- Department
Molecules-Signaling-Development, Max-Planck
Institute of Neurobiology, Martinsried 82152, Germany
| | - Dirk Trauner
- Department
of Chemistry, Ludwig-Maximilians-Universität
München, Munich 81377, Germany
| |
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