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Gou W, Dai P, Wang M, Wang Y, Ma N, Zhou X, Xu Y, Zhang L, Li C. Synthesis of Diverse Ureas from Amines and CO 2 at Atmospheric Pressure and Room Temperature. J Org Chem 2024; 89:12498-12507. [PMID: 39180140 DOI: 10.1021/acs.joc.4c01474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2024]
Abstract
A metal-free method is developed to perform the synthesis of urea derivatives utilizing CO2 as the C1 building block at atmospheric pressure and room temperature. In addition to diverse symmetric and dissymmetric ureas, benzimidazolones and quinazolinone can also be easily prepared using this protocol. Most importantly, the gram-scale preparation of fungicide pencycuron and antipsychotic drug pimavanserin proceeded smoothly under the mild conditions.
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Affiliation(s)
- Wenchang Gou
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Pinli Dai
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Mei Wang
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Yunhuan Wang
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Nana Ma
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Xuan Zhou
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Yingjian Xu
- GoldenKeys High-tech Materials Co., Ltd., Guian New Area, Guizhou 550025, People's Republic of China
| | - Lin Zhang
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
| | - Chun Li
- School of Pharmaceutical Sciences, Guizhou Medical University, 550004 Guiyang, People's Republic of China
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Zhang L, Li M, Zhang D, Yue W, Qian Z. Prioritizing of potential environmental exposure carcinogens beyond IARC group 1-2B based on weight of evidence (WoE) approach. Regul Toxicol Pharmacol 2024; 150:105646. [PMID: 38777300 DOI: 10.1016/j.yrtph.2024.105646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 05/12/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Environmental exposures are the main cause of cancer, and their carcinogenicity has not been fully evaluated, identifying potential carcinogens that have not been evaluated is critical for safety. This study is the first to propose a weight of evidence (WoE) approach based on computational methods to prioritize potential carcinogens. Computational methods such as read across, structural alert, (Quantitative) structure-activity relationship and chemical-disease association were evaluated and integrated. Four different WoE approach was evaluated, compared to the best single method, the WoE-1 approach gained 0.21 and 0.39 improvement in the area under the receiver operating characteristic curve (AUC) and Matthew's correlation coefficient (MCC) value, respectively. The evaluation of 681 environmental exposures beyond IARC list 1-2B prioritized 52 chemicals of high carcinogenic concern, of which 21 compounds were known carcinogens or suspected carcinogens, and eight compounds were identified as potential carcinogens for the first time. This study illustrated that the WoE approach can effectively complement different computational methods, and can be used to prioritize chemicals of carcinogenic concern.
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Affiliation(s)
- Lu Zhang
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China; Tianjin Key Laboratory of Pathogenic Microbiology of Infectious Disease, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Min Li
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China; Tianjin Key Laboratory of Pathogenic Microbiology of Infectious Disease, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Dalong Zhang
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Wenbo Yue
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Zhiyong Qian
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China.
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Wang Z, Wang Z, Wang G, Zhang Q, Wang Q, Wang W. New insight into biodegradation mechanism of phenylurea herbicides by cytochrome P450 enzymes: Successive N-demethylation mechanism. ENVIRONMENT INTERNATIONAL 2023; 182:108332. [PMID: 37988774 DOI: 10.1016/j.envint.2023.108332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 11/23/2023]
Abstract
Phenylurea herbicides (PUHs) present one of the most important herbicides, which have cause serious effects on ecological environment and humans. Nowadays enzyme strategy shows great advantages in degradation of PUHs. Here density functional theory (DFT), quantitative structure - activity relationship (QSAR) and quantum mechanics/molecular mechanics (QM/MM) approaches are used to investigate the degradation mechanism of PUHs catalyzed by P450 enzymes. Two successive N-demethylation pathways are identified and two hydrogen abstraction (H-abstraction) reaction pathways are identified as the rate-determining step through high-throughput DFT calculations. The Boltzmann-weighted average energy barrier of the second H-abstraction pathway (19.95 kcal/mol) is higher than that of the first H-abstraction pathway (16.80 kcal/mol). Two QSAR models are established to predict the energy barriers of the two H-abstraction pathways based on the quantum chemical descriptors and mordred molecular descriptors. The determination coefficient (R2) values of QSAR models are > 0.9, which reveal that the established QSAR models have great predictive capability. QM/MM calculations indicate that human P450 enzymes are more efficient in degradation of PUHs than crop and weed P450 enzymes. Correlations between energy barriers and key structural/charge parameters are revealed and key parameters that have influence on degradation efficiency of PUHs are identified. This study provides lateral insights into the biodegradation strategy and removal method of PUHs and valuable information for designing or engineering of highly efficient degradation enzymes and genetically modified crops.
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Affiliation(s)
- Zijian Wang
- Environment Research Institute, Shandong University, Qingdao 266237, PR China
| | - Zhong Wang
- Shandong Nuclear and Radiation Safety Monitoring Center, Jinan 250117, PR China
| | - Guoqiang Wang
- Environment Research Institute, Shandong University, Qingdao 266237, PR China
| | - Qingzhu Zhang
- Environment Research Institute, Shandong University, Qingdao 266237, PR China.
| | - Qiao Wang
- Environment Research Institute, Shandong University, Qingdao 266237, PR China
| | - Wenxing Wang
- Environment Research Institute, Shandong University, Qingdao 266237, PR China
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W. A, Dhas DA, Balachandran S, I. HJ. Structural, Spectroscopic, and C-H…O Hydrogen Bonding Interaction on Structure (Monomer and Dimer) Vibrational Spectroscopic, Fukui, NCI, AIM, and RDG Analysis Molecular Docking and Molecular Dynamic Simulation of Biological Active Pencycuron. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2149563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Abisha W.
- Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu, India
- Department of Physics and Research Centre, Nesamony Memorial Christian College, Marthandam, India
| | - D. Arul Dhas
- Department of Physics and Research Centre, Nesamony Memorial Christian College, Marthandam, India
| | - S. Balachandran
- Department of Chemistry, NSS College Ottapalam, Palakkad, India
| | - Hubert Joe I.
- Department of Physics, Centre for Molecular and Biophysics Research, Mar Ivanios College, Thiruvananthapuram, India
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Morais EM, Silva AAR, de Sousa FWA, de Azevedo IMB, Silva HF, Santos AMG, Beserra Júnior JEA, de Carvalho CP, Eberlin MN, Porcari AM, Araújo FDDS. Endophytic Trichoderma strains isolated from forest species of the Cerrado-Caatinga ecotone are potential biocontrol agents against crop pathogenic fungi. PLoS One 2022; 17:e0265824. [PMID: 35427356 PMCID: PMC9012399 DOI: 10.1371/journal.pone.0265824] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/08/2022] [Indexed: 11/19/2022] Open
Abstract
The indiscriminate use of chemical pesticides increasingly harms the health of living beings and the environment. Thus, biological control carried out by microorganisms has gained prominence, since it consists of an environmentally friendly alternative to the use of pesticides for controlling plant diseases. Herein, we evaluated the potential role of endophytic Trichoderma strains isolated from forest species of the Cerrado-Caatinga ecotone as biological control agents of crop pathogenic fungi. Nineteen Trichoderma strains were used to assess the antagonistic activity by in vitro bioassays against the plant pathogens Colletotrichum truncatum, Lasiodiplodia theobromae, Macrophomina phaseolina, and Sclerotium delphinii isolated from soybean, cacao, fava bean, and black pepper crops, respectively. All Trichoderma strains demonstrated inhibitory activity on pathogen mycelial growth, with maximum percent inhibition of 70% against C. truncatum, 78% against L. theobromae, 78% against M. phaseolina, and 69% against S. delphinii. Crude methanol extracts (0.5 to 2.0 mg mL-1) of Trichoderma strains were able to inhibit the growth of C. truncatum, except Trichoderma sp. T3 (UFPIT06) and T. orientale (UFPIT09 and UFPIT17) at 0.5 mg mL-1, indicating that the endophytes employ a biocontrol mechanism related to antibiosis, together with multiple mechanisms. Discriminant metabolites of Trichoderma extracts were unveiled by liquid chromatography-tandem mass spectrometry-based metabolomics combined with principal component analysis (PCA), which included antifungal metabolites and molecules with other bioactivities. These results highlight the biocontrol potential of Trichoderma strains isolated from the Cerrado-Caatinga ecotone against crop pathogenic fungi, providing support for ongoing research on disease control in agriculture.
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Affiliation(s)
| | - Alex Ap. Rosini Silva
- MS4Life Laboratory of Mass Spectrometry, Health Sciences Postgraduate Program, São Francisco University, Braganca Paulista, São Paulo, SP, Brazil
| | | | | | - Helane França Silva
- Campus Professora Cinobelina Elvas, Federal University of Piauí, Bom Jesus, PI, Brazil
| | | | | | - Caroline Pais de Carvalho
- School of Material Engineering an Nanotechnology, MackMass Laboratory, Mackenzie Presbyterian University, São Paulo, SP, Brazil
| | - Marcos Nogueira Eberlin
- School of Material Engineering an Nanotechnology, MackMass Laboratory, Mackenzie Presbyterian University, São Paulo, SP, Brazil
| | - Andreia M. Porcari
- MS4Life Laboratory of Mass Spectrometry, Health Sciences Postgraduate Program, São Francisco University, Braganca Paulista, São Paulo, SP, Brazil
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Moo-Muñoz AJ, Azorín-Vega EP, Ramírez-Durán N, Moreno-Pérez PA. Evaluation of the cytotoxic and genotoxic potential of the captan-based fungicides, chlorothalonil-based fungicides and methyl thiophanate-based fungicides in human fibroblasts BJ. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:877-883. [PMID: 34486949 DOI: 10.1080/03601234.2021.1972721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The objectives of this study were to examine cytotoxic and genotoxic damage in human BJ fibroblasts caused by three pesticides used worldwide by trypan blue dye exclusion assays and to measure the relative level of phosphorylated histone H2A.X by flow cytometry at different concentrations. Captan-based fungicide and methyl thiophanate-based fungicide (100 and 1000 µΜ) showed immediate cytotoxic effects; furthermore, after 24 h, captan-based fungicide, chlorothalonil-based fungicide and methyl thiophanate-based fungicide caused cytotoxic effects in the concentration ranges of 40-100 µM, 30-100 µM and 150-1000 µM, respectively. All fungicides generated DNA damage in the treated cells by activating ATM and H2A.X sensor proteins. The three fungicides tested generated DNA double-stranded breaks and showed cytotoxicity at concentrations 33, 34, and 5 times lower (captan, chlorothalonil and thiophanate-methyl respectively) than those used in the field, as recommended by the manufacturers.
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Affiliation(s)
- Andy J Moo-Muñoz
- Laboratory of Medical and Environmental Microbiology University, Autonomous of the State of Mexico, Paseo Tollocan, State of Mexico
| | - Erika P Azorín-Vega
- National Radiopharmaceutical Research and Development Laboratory, National Institute for Nuclear Research, La Marquesa-Ocoyoacac, State of Mexico
| | - Ninfa Ramírez-Durán
- Laboratory of Medical and Environmental Microbiology University, Autonomous of the State of Mexico, Paseo Tollocan, State of Mexico
| | - Pablo Antonio Moreno-Pérez
- Laboratory of Medical and Environmental Microbiology University, Autonomous of the State of Mexico, Paseo Tollocan, State of Mexico
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Arantes MR, Peijnenburg A, Hendriksen PJM, Stoopen G, Almeida TS, Souza TM, Farias DF, Carvalho AFU, Rocha TM, Leal LKAM, Vasconcelos IM, Oliveira JTA. In vitro toxicological characterisation of the antifungal compound soybean toxin (SBTX). Toxicol In Vitro 2020; 65:104824. [PMID: 32165152 DOI: 10.1016/j.tiv.2020.104824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 02/13/2020] [Accepted: 03/08/2020] [Indexed: 12/18/2022]
Abstract
Soybean toxin (SBTX) is a protein isolated from soybean seeds and composed of two polypeptide subunits (17 and 27 kDa). SBTX has in vitro activity against phytopathogenic fungi such as Cercospora sojina, Aspergillus niger, and Penicillium herguei, and yeasts like Candida albicans, C. parapsilosis, Kluyveromyces marxiannus, and Pichia membranifaciens. The present study aimed to analyze in vitro whether SBTX causes any side effects on non-target bacterial and mammalian cells that could impede its potential use as a novel antifungal agent. SBTX at 100 μg/mL and 200 μg/mL did not hinder the growth of the bacteria Salmonella enterica (subspecies enterica serovar choleraesuis), Bacillus subtilis (subspecies spizizenii) and Staphylococcus aureus. Moreover, SBTX at concentrations up to 500 μg/mL did not significantly affect the viability of erythrocytes, neutrophils, and human intestinal Caco-2 cells. To study whether SBTX could induce relevant alterations in gene expression, in vitro DNA microarray experiments were conducted in which differentiated Caco-2 cells were exposed for 24 h to 100 μg/mL or 200 μg/mL SBTX. SBTX up-regulated genes involved in cell cycle and immune response pathways, but down-regulated genes that play a role in cholesterol biosynthesis and platelet degranulation pathways. Thus, although SBTX did not affect bacteria, nor induced cytotoxity in mammalian cells, it affected some biological pathways in the human Caco-2 cell line that warrants further investigation.
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Affiliation(s)
- Mariana Reis Arantes
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60020-181 Fortaleza, CE, Brazil
| | - Ad Peijnenburg
- WFSR, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, the Netherlands.
| | - Peter J M Hendriksen
- WFSR, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, the Netherlands.
| | - Geert Stoopen
- WFSR, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, the Netherlands.
| | - Thiago Silva Almeida
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60020-181 Fortaleza, CE, Brazil
| | - Terezinha Maria Souza
- Department of Toxicogenomics, GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht 6229, ER, the Netherlands.
| | - Davi Felipe Farias
- Department of Molecular Biology, Federal University of Paraíba, 58051-900 Joao Pessoa, PB, Brazil.
| | | | | | | | - Ilka Maria Vasconcelos
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60020-181 Fortaleza, CE, Brazil.
| | - Jose Tadeu Abreu Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, 60020-181 Fortaleza, CE, Brazil.
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Guo X, Seo JE, Li X, Mei N. Genetic toxicity assessment using liver cell models: past, present, and future. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2019; 23:27-50. [PMID: 31746269 DOI: 10.1080/10937404.2019.1692744] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Genotoxic compounds may be detoxified to non-genotoxic metabolites while many pro-carcinogens require metabolic activation to exert their genotoxicity in vivo. Standard genotoxicity assays were developed and utilized for risk assessment for over 40 years. Most of these assays are conducted in metabolically incompetent rodent or human cell lines. Deficient in normal metabolism and relying on exogenous metabolic activation systems, the current in vitro genotoxicity assays often have yielded high false positive rates, which trigger unnecessary and costly in vivo studies. Metabolically active cells such as hepatocytes have been recognized as a promising cell model in predicting genotoxicity of carcinogens in vivo. In recent years, significant advances in tissue culture and biological technologies provided new opportunities for using hepatocytes in genetic toxicology. This review encompasses published studies (both in vitro and in vivo) using hepatocytes for genotoxicity assessment. Findings from both standard and newly developed genotoxicity assays are summarized. Various liver cell models used for genotoxicity assessment are described, including the potential application of advanced liver cell models such as 3D spheroids, organoids, and engineered hepatocytes. An integrated strategy, that includes the use of human-based cells with enhanced biological relevance and throughput, and applying the quantitative analysis of data, may provide an approach for future genotoxicity risk assessment.
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Affiliation(s)
- Xiaoqing Guo
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, Jefferson, AR, USA
| | - Ji-Eun Seo
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, Jefferson, AR, USA
| | - Xilin Li
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, Jefferson, AR, USA
| | - Nan Mei
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, Jefferson, AR, USA
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