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Trenteseaux C, Fontaine K, Chatzidimitriou E, Bouscaillou W, Mienné A, Sarda X. Cumulative dietary risk assessment for French consumers exposed to succinate dehydrogenase inhibitor pesticides. Food Chem Toxicol 2024; 191:114890. [PMID: 39059689 DOI: 10.1016/j.fct.2024.114890] [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: 03/12/2024] [Revised: 07/16/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Consumers are exposed to succinate dehydrogenase inhibitor (SDHI) pesticides through their diet. A cumulative dietary risk assessment for the French population has been performed with French monitoring data (2017-2021) and consumption data from INCA3. The calculation followed a two-tiered approach, using deterministic then probabilistic methods. It was carried out, using European health based guidance values (HBGV) derived for each active substance to characterise their toxicity. In Tier I, the calculated hazard index of 0.12 was below the threshold of 1 and in Tier II, the total margin of exposure at percentile 99.9 remains above the trigger value of 100 (1798 [1631-2311]). In Tier II, the three main risk drivers identified at the upper tail of the distribution were strawberries-fluopyram (19.1%), peaches-fluopyram (14.1%) and table grapes-boscalid (10.5%). Finally, the impact of the major sources of uncertainties was qualitatively evaluated. All together, they were considered of low impact on the outcomes. This work demonstrates the absence of unacceptable chronic risk related to the cumulative exposure of SDHI for French consumers during the 2017-2021 period.
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Affiliation(s)
- Charlotte Trenteseaux
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France.
| | - Kévin Fontaine
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France
| | - Eleni Chatzidimitriou
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France
| | - William Bouscaillou
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France
| | - Alexandra Mienné
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France
| | - Xavier Sarda
- Regulated Products Assessment Department, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, Maisons-Alfort, France
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Huang P, Yan X, Yu B, He X, Lu L, Ren Y. A Comprehensive Review of the Current Knowledge of Chlorfenapyr: Synthesis, Mode of Action, Resistance, and Environmental Toxicology. Molecules 2023; 28:7673. [PMID: 38005396 PMCID: PMC10675257 DOI: 10.3390/molecules28227673] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
Creating new insecticide lead compounds based on the design and modification of natural products is a novel process, of which chlorfenapyr is a typical successful example. Chlorfenapyr is an arylpyrrole derivative that has high biological activity, a wide insecticidal spectrum, and a unique mode of action. For decades, a series of chlorfenapyr derivatives were designed and synthesized continuously, of which many highly active insecticidal compounds were discovered sequentially. However, due to the widespread application of chlorfenapyr and its degradation properties, some adverse effects, including pest resistance and environmental toxicity, occurred. In this review, a brief history of the discovery and development of chlorfenapyr is first introduced. Then, the synthesis, structural modification, structure activity relationship, and action mechanism of arylpyrroles are summarized. However, challenges and limitations still exist, especially in regard to the connection with pest resistance and environmental toxicology, which is discussed at the end of this review. This comprehensive summary of chlorfenapyr further promotes its progress and sensible application for pest management.
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Affiliation(s)
| | | | | | | | | | - Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; (P.H.); (X.Y.); (B.Y.); (X.H.); (L.L.)
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3
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Duarte Hospital C, Tête A, Debizet K, Imler J, Tomkiewicz-Raulet C, Blanc EB, Barouki R, Coumoul X, Bortoli S. SDHi fungicides: An example of mitotoxic pesticides targeting the succinate dehydrogenase complex. ENVIRONMENT INTERNATIONAL 2023; 180:108219. [PMID: 37778286 DOI: 10.1016/j.envint.2023.108219] [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: 03/11/2023] [Revised: 06/15/2023] [Accepted: 09/18/2023] [Indexed: 10/03/2023]
Abstract
Succinate dehydrogenase inhibitors (SDHi) are fungicides used to control the proliferation of pathogenic fungi in crops. Their mode of action is based on blocking the activity of succinate dehydrogenase (SDH), a universal enzyme expressed by all species harboring mitochondria. The SDH is involved in two interconnected metabolic processes for energy production: the transfer of electrons in the mitochondrial respiratory chain and the oxidation of succinate to fumarate in the Krebs cycle. In humans, inherited SDH deficiencies may cause major pathologies including encephalopathies and cancers. The cellular and molecular mechanisms related to such genetic inactivation have been well described in neuroendocrine tumors, in which it induces an oxidative stress, a pseudohypoxic phenotype, a metabolic, epigenetic and transcriptomic remodeling, and alterations in the migration and invasion capacities of cancer cells, in connection with the accumulation of succinate, an oncometabolite, substrate of the SDH. We will discuss recent studies reporting toxic effects of SDHi in non-target organisms and their implications for risk assessment of pesticides. Recent data show that the SDH structure is highly conserved during evolution and that SDHi can inhibit SDH activity in mitochondria of non-target species, including humans. These observations suggest that SDHi are not specific inhibitors of fungal SDH. We hypothesize that SDHi could have toxic effects in other species, including humans. Moreover, the analysis of regulatory assessment reports shows that most SDHi induce tumors in animals without evidence of genotoxicity. Thus, these substances could have a non-genotoxic mechanism of carcinogenicity that still needs to be fully characterized and that could be related to SDH inhibition. The use of pesticides targeting mitochondrial enzymes encoded by tumor suppressor genes raises questions on the risk assessment framework of mitotoxic pesticides. The issue of SDHi fungicides is therefore a textbook case that highlights the urgent need for changes in regulatory assessment.
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Affiliation(s)
| | - Arnaud Tête
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris
| | - Kloé Debizet
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris
| | - Jules Imler
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris
| | | | - Etienne B Blanc
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris
| | - Robert Barouki
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris
| | - Xavier Coumoul
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris.
| | - Sylvie Bortoli
- Université Paris Cité, INSERM UMR-S 1124, T3S, 45 rue des Saints-Pères, 75006 Paris.
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4
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He X, Lu L, Huang P, Yu B, Peng L, Zou L, Ren Y. Insect Cell-Based Models: Cell Line Establishment and Application in Insecticide Screening and Toxicology Research. INSECTS 2023; 14:104. [PMID: 36835673 PMCID: PMC9965340 DOI: 10.3390/insects14020104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/07/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
During the past decades, research on insect cell culture has grown tremendously. Thousands of lines have been established from different species of insect orders, originating from several tissue sources. These cell lines have often been employed in insect science research. In particular, they have played important roles in pest management, where they have been used as tools to evaluate the activity and explore the toxic mechanisms of insecticide candidate compounds. This review intends to first briefly summarize the progression of insect cell line establishment. Then, several recent studies based on insect cell lines coupled with advanced technologies are introduced. These investigations revealed that insect cell lines can be exploited as novel models with unique advantages such as increased efficiency and reduced cost compared with traditional insecticide research. Most notably, the insect cell line-based models provide a global and in-depth perspective to study the toxicology mechanisms of insecticides. However, challenges and limitations still exist, especially in the connection between in vitro activity and in vivo effectiveness. Despite all this, recent advances have suggested that insect cell line-based models promote the progress and sensible application of insecticides, which benefits pest management.
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Ren Y, He X, Yang Y, Cao Y, Li Q, Lu L, Peng L, Zou L. Mitochondria-Mediated Apoptosis and Autophagy Participate in Buprofezin-Induced Toxic Effects in Non-Target A549 Cells. TOXICS 2022; 10:551. [PMID: 36287832 PMCID: PMC9610203 DOI: 10.3390/toxics10100551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/18/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Buprofezin (BUP) is an insecticide used for control of sucking pests. Its widespread use has raised concerns about possible adverse effects on the environment, and especially human health. The mechanism of toxicity of BUP, with respect to human health, is still unclear. Consequently, human A549 cells were employed to clarify the cytotoxicity and toxic mechanism of BUP at the molecular and cellular levels. The outcomes revealed BUP latent toxicity to A549 in a time- and dose-related way. Moreover, BUP induced mitochondrial dysfunction associated with mitochondrial membrane potential collapse, mitochondrial calcium overload, and ROS aggregation, ultimately resulting in the apoptosis and autophagy of A549 cells. Symbolic apoptotic and autophagic modifications were detected, including leakage of cyt-c, elevation of Bax/Bcl-2, activation of cas-9/-3, constitution of autophagic vacuoles, promotion of Beclin-1, conversion of LC3-II, and reduction of p62. Additionally, in total, 1216 differentially expressed genes (DEGs) were defined after BUP treatment. Several apoptosis- and autophagy-related genes, such as BCL2, ATG5, and ATG16, down- or upregulated at the RNA transcription level, and functional DEGs enrichment analysis showed their involvement in the metabolism of xenobiotics by cytochrome P450, mTOR signalling pathway, and AMPK signalling pathway. Results confirmed that BUP could induce cytotoxicity associated with mitochondria-mediated programmed cell death in A549 cells.
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Affiliation(s)
- Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Xuan He
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yanting Yang
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yanan Cao
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Lidan Lu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Lianxin Peng
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
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Ren Y, He X, Yan X, Yang Y, Li Q, Yao T, Lu L, Peng L, Zou L. Unravelling the Polytoxicology of Chlorfenapyr on Non-Target HepG2 Cells: The Involvement of Mitochondria-Mediated Programmed Cell Death and DNA Damage. Molecules 2022; 27:molecules27175722. [PMID: 36080487 PMCID: PMC9457613 DOI: 10.3390/molecules27175722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022] Open
Abstract
Chlorfenapyr (CHL) is a type of insecticide with a wide range of insecticidal activities and unique targets. The extensive use of pesticides has caused an increase in potential risks to the environment and human health. However, the potential toxicity of CHL and its mechanisms of action on humans remain unclear. Therefore, human liver cells (HepG2) were used to investigate the cytotoxic effect and mechanism of toxicity of CHL at the cellular level. The results showed that CHL induced cellular toxicity in HepG2 cells and induced mitochondrial damage associated with reactive oxygen species (ROS) accumulation and mitochondrial calcium overload, ultimately leading to apoptosis and autophagy in HepG2 cells. Typical apoptotic changes occurred, including a decline in the mitochondrial membrane potential, the promotion of Bax/Bcl-2 expression causing the release of cyt-c into the cytosol, the activation of cas-9/-3, and the cleavage of PARP. The autophagic effects included the formation of autophagic vacuoles, accumulation of Beclin-1, transformation of LC3-II, and downregulation of p62. Additionally, DNA damage and cell cycle arrest were detected in CHL-treated cells. These results show that CHL induced cytotoxicity associated with mitochondria-mediated programmed cell death (PCD) and DNA damage in HepG2 cells.
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Affiliation(s)
- Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Xuan He
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Xiyue Yan
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yanting Yang
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Tian Yao
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Lidan Lu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
- Correspondence:
| | - Lianxin Peng
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
- Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, Chengdu 610106, China
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
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Gu G, Jiang M, Hu H, Qiao W, Jin H, Hou T, Tao K. Neochamaejasmin B extracted from Stellera chamaejasme L. induces apoptosis through caspase-10-dependent way in insect neuronal cells. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 110:e21892. [PMID: 35478464 DOI: 10.1002/arch.21892] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/09/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
To explore the toxicity mechanisms of neochamaejasmin B (NCB) extracted from Stellera chamaejasme L., we first evaluated its cytotoxicity in neuronal cells of Helicoverpa zea (AW1 cells). NCB inhibited cell growth and was cytotoxic to AW1 cells in a dose-dependent manner. Further, transmission electron microscopy (TEM) was used to analyze the microstructure, and typical apoptotic characteristics were observed in AW1 cells treated with NCB. Moreover, the NCB-induced apoptosis was dose dependent. Subsequently, we explored the mechanism of apoptosis. A decline in the mitochondrial membrane potential (MMP) was found. Also, the levels of Bax were increased with increases in drug concentration, but there was no statistical difference in Bcl-2 levels at different NCB doses. Caspase-3 and caspase-10 activity was increased. These findings confirmed that NCB induced apoptosis in AW1 cells through a caspase-10-dependent mechanism. The results provide the basic information needed for understanding the toxicity and mechanisms of action of NCB, which could potentially be used to develop NCB as a new insecticide.
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Affiliation(s)
- Guirong Gu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Mingfang Jiang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Hanying Hu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Weijie Qiao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Taiping Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Ke Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, P.R. China
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Song Z, Zhu K, Jiang H, Gong H, Ye Z, Zhang F. Synthesis of 1,3-Dioxepine-Fused (Tricyclic) Bispyrazoles Involved with Pyrazolone Derivatives and Dichloromethane. J Org Chem 2022; 87:4284-4290. [PMID: 35262363 DOI: 10.1021/acs.joc.1c03121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A simple and novel method for the synthesis of novel 1,3-dioxepine-fused (tricyclic) bispyrazoles is described. It involves a Cs2CO3-mediated O-alkylation of readily available pyrazolone derivatives with dichloromethane as the methylene source followed by PhI(OAc)2-mediated intramolecular oxidative biheteroaryl coupling under mild conditions. This scalable protocol was applied for the preparation of valuable and novel 1,3-dioxepine-fused (tricyclic) bispyrazoles that could find applications in medicinal or material chemistry.
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Affiliation(s)
- Zongqiang Song
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Kai Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Hongqiang Jiang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Hengfa Gong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zenghui Ye
- School of Pharmacy, Hangzhou Medical College, Hangzhou 310013, P. R. China
| | - Fengzhi Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China.,School of Pharmacy, Hangzhou Medical College, Hangzhou 310013, P. R. China
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Yuan M, Li W, Xiao P. Bixafen causes cardiac toxicity in zebrafish (Danio rerio) embryos. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:36303-36313. [PMID: 33694115 DOI: 10.1007/s11356-021-13238-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Bixafen (BIX) is a succinate dehydrogenase inhibitor (SDHI)-class fungicide that is used to control crop diseases. However, data on the toxicity of BIX to zebrafish are limited. Here, zebrafish embryos were exposed to 0.1, 0.3, and 0.9 μM BIX. After BIX exposure, zebrafish embryos exhibited cardiac dysplasia and dysfunction, including pericardial edema, reduced heart rate, and drastically decreased erythrocytes in the cardiac area; the severity of these negative effects increased with BIX concentration and the duration of BIX exposure. In addition, the transcription levels of erythropoiesis-related genes decreased significantly in BIX-treated embryos, as compared to untreated control embryos. Similarly, compared with the control, key genes responsible for cardiac development (myh6, nkx2.5, and myh7) also exhibited dysregulated expression patterns in response to BIX treatment, suggesting that BIX might specifically affect cardiac development. Finally, cell apoptosis was induced in embryos after BIX treatment. In combination, our results suggested that exposure to BIX induced cardiac toxicity in zebrafish. These data will be valuable for future evaluations of the environmental risks of BIX.
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Affiliation(s)
- Mingrui Yuan
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Wenhua Li
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China.
| | - Peng Xiao
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China.
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Fiaz M, Martínez LC, Plata-Rueda A, Cossolin JFS, Serra RS, Martins GF, Serrão JE. Behavioral and ultrastructural effects of novaluron on Aedes aegypti larvae. INFECTION GENETICS AND EVOLUTION 2021; 93:104974. [PMID: 34166815 DOI: 10.1016/j.meegid.2021.104974] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 06/15/2021] [Accepted: 06/19/2021] [Indexed: 11/28/2022]
Abstract
Chitin synthesis inhibitors (CSI) are supposed to inhibit formation of chitin microfibrils in newly synthesized cuticle during molting process. Conversely, there has been comparatively few data on morphological effects of CSI on non-target insect organs. In this work, the effects of the CSI novaluron on behavior and midgut of A. aegypti were evaluated. Toxicity bioassays revealed that novaluron is toxic to A. aegypti larva with LC50 = 18.57 mg L-1 when exposed in aqueous solution for 24 h. Novaluron treated larvae were less active and spent more time resting compared to the control group. Histopathology showed that midguts of novaluron-treated larvae had cytoplasm vacuolization and damaged brush border. Cytotoxic effects in midguts of treated larvae induced necrosis, autophagy and damage to mitochondria. Despite being chitin synthesis inhibitor, novaluron did not induce alterations in the integument of A. aegypti larvae. Fluorescence microscopy revealed that the number of digestive cells were higher in novaluron-treated larvae than in control, in response to digestive cell apoptosis. The present study highlights the importance of novaluron against A. aegypti larvae by causing injuries to non-target organs, altering behaviors, inducing cell death and inhibiting cell proliferation.
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Affiliation(s)
- Muhammad Fiaz
- Department of Entomology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil; Institute of Plant Protection, MNS-University of Agriculture, Multan 60000, Punjab, Pakistan.
| | - Luis Carlos Martínez
- Department of General Biology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil
| | - Angelica Plata-Rueda
- Department of Entomology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil
| | | | - Raissa Santana Serra
- Department of Entomology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil
| | | | - José Eduardo Serrão
- Department of General Biology, Federal University of Viçosa, 36570-000 Viçosa, MG, Brazil.
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11
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Ren Y, Li Q, Lu L, Jin H, Tao K, Hou T. Isochamaejasmin induces toxic effects on Helicoverpa zea via DNA damage and mitochondria-associated apoptosis. PEST MANAGEMENT SCIENCE 2021; 77:557-567. [PMID: 32815281 DOI: 10.1002/ps.6055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Stellera chamaejasme L. is a poisonous plant with rich resources and is thus highly valuable in terms of new pesticide development. Isochamaejasmin (ICM), one of the main ingredients in S. chamaejasme has drawn much attention owing to its antitumour properties. However, the toxicity and mode of action of ICM on insects are still not clear. In this article, the larva and neuronal cell (AW1) of Helicoverpa zea were used to clarify the insecticidal activity of ICM as well as its toxic mechanism at the cellular level. RESULTS The results confirmed that ICM has potential toxicity against H. zea both in vivo and in vitro via time- and dose-dependent manners. Moreover, we found that ICM caused DNA damage and increased the levels of γH2AX and OGG1 in AW1 cells. Results also showed decline in the mitochondrial membrane potential (MMP), upregulation of Bax/Bcl-2 expression resulting in the release of cytochrome c into the cytosol, activation of caspase-3/9, and cleavage of poly ADP-ribose polymerase (PARP) as a result of exposure to ICM. Additionally, a dose-dependent rise in the reactive oxygen species (ROS) levels, accumulation of a lipid peroxidation product, and inactivation of antioxidant enzymes were found in ICM-treated cells. CONCLUSION These findings confirmed the insecticidal activity of ICM. Furthermore, the results revealed that ICM could cause DNA damage and induce apoptosis via the mitochondrial pathway in AW1 cells. This study provides the basic information needed to understand the toxicity and mechanisms of action of ICM, which could potentially be used to develop it as a new insecticide.
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Affiliation(s)
- Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, China
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, China
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lidan Lu
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, China
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Ke Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Taiping Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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Ren Y, Li Q, Lu L, Jin H, Tao K, Hou T. Toxicity and physiological actions of biflavones on potassium current in insect neuronal cells. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 171:104735. [PMID: 33357557 DOI: 10.1016/j.pestbp.2020.104735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 08/23/2020] [Accepted: 10/13/2020] [Indexed: 06/12/2023]
Abstract
Stellera chamaejasme L. is a Chinese traditional herb. It has a long history and many medicinal usages. Biflavones, one of the main active ingredients in S. chamaejasme's roots, possess excellent insecticidal activities both in vivo and in vitro. However, the mechanism of these compounds and its potential molecular targets on insect cell were still not clear. Here the whole cell patch clamp technique was used to investigate whether biflavones affects voltage-gated potassium channels (Kv) on insect neuronal cells (AW1 and WG2). The results confirmed that both the three biflavones: neochamaejasmin A (NCA), neochamaejasmin B (NCB) and isochamaejasmin A (ICM) can significantly inhibit the A-type potassium current (IA) than delayed rectifier potassium current (IK) expressed on insect cells. Moreover, ICM stood out as the strongest inhibition activity on IA with IC50 value of 106.75 μM. Multiple results suggest that the inhibition of potassium current was related to the gating modification of biflavones. ICM produced concentration dependent hyperpolarizing shifts in the voltage dependence of channel steady-state activation and inactivation. Maximal shifts of the ICM-induced V0.5, were -15.1 mV for activation and -6.93 mV for inactivation. ICM also prolonged recovery from inactivation of current. Moreover, the biflavones could inhibited AW1 cell survival in both dose- and time-dependent manners with well correlation of K+ inhibitory activity. Our study showed that biflavones from S. chamaejasme exhibiting significant blocked effects on Kv of AW1 cells and inhibited cell proliferation. These findings may not only show the toxic mechanisms of biflavones on insect cells, but also suggest that Kv channel play an important role in biflavones' mode of action and may be the new targets for designing novel insecticides.
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Affiliation(s)
- Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, Sichuan, China; Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, Sichuan, China; Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Lidan Lu
- Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, Sichuan, China; Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Ke Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China.
| | - Taiping Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, China.
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Vorgia E, Lamprousi M, Denecke S, Vogelsang K, Geibel S, Vontas J, Douris V. Functional characterization and transcriptomic profiling of a spheroid-forming midgut cell line from Helicoverpa zea (Lepidoptera: Noctuidae). INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2021; 128:103510. [PMID: 33276037 DOI: 10.1016/j.ibmb.2020.103510] [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: 07/20/2020] [Revised: 11/15/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Insect cell lines have been frequently used in insect science research in recent years. Establishment of cell lines from specialized tissues like the lepidopteran midgut is expected to facilitate research efforts towards the understanding of uptake and metabolic properties, as well as the design of assays for use in pesticide discovery. However, the number of available lines from specialized tissues of insects and the level of understanding of the biological processes taking place in insect cells is far behind mammalian systems. In this study we examine two established cell lines of insect midgut origin, investigate their growth parameters and amenability to transfection and genetic manipulation, and test their potential to form spheroid-like 3D structures. Our results indicate that a midgut-derived cell line from Helicoverpa zea, RP-HzGUT-AW1, is amenable to genetic manipulation by transfection with a standard insect expression vector and has excellent ability to form spheroids. To further investigate the differentiation status of this line, we examined for expression of several candidate marker genes from different midgut cell types, enterocytes (ECs), Goblet cells (GCs), enteroendocrine cells (EEs) and intestinal stem cells (ISCs), indicating that both certain ISC and certain differentiated cell markers were present. To acquire a more detailed perspective of the differentiation landscape of the specific cells, we performed an RNAseq analysis of RP-HzGUT-AW1 grown either in 2D or 3D cultures. We hypothesize that RP-HzGUT-AW1 are in an "arrested" developmental stage between ISC and terminal differentiation. Furthermore, an enrichment of stress response and oxidoreductase genes was observed in the spheroid samples while no significant difference was evident in differentiation markers between cells grown in 2D and 3D. These results render RP-HzGUT-AW1 as the most well-characterized insect gut derived cell line so far, and lay the groundwork for future work investigating midgut cell lines application potential.
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Affiliation(s)
- Elena Vorgia
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece
| | - Mantha Lamprousi
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Department of Biology, University of Crete, Vassilika Vouton, 71409, Heraklion, Crete, Greece
| | - Shane Denecke
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece
| | - Kathrin Vogelsang
- Bayer AG, CropScience Division, R&D Pest Control, D-40789 Monheim, Germany
| | - Sven Geibel
- Bayer AG, CropScience Division, R&D Pest Control, D-40789 Monheim, Germany
| | - John Vontas
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, Greece
| | - Vassilis Douris
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion Crete, Greece; Department of Biological Applications and Technology, University of Ioannina, 45110, Ioannina, Greece.
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14
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Liang P, Shen S, Xu Q, Wang S, Jin S, Lu H, Dong Y, Zhang J. Design, synthesis biological activity, and docking of novel fluopyram derivatives containing guanidine group. Bioorg Med Chem 2020; 29:115846. [PMID: 33191087 DOI: 10.1016/j.bmc.2020.115846] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/11/2020] [Accepted: 11/01/2020] [Indexed: 02/07/2023]
Abstract
Succinate dehydrogenase (SDH), a crucial bridge enzyme between the respiratory electron transfer chain and tricarboxylic acid (or Krebs) cycle, has been identified as an ideal target for the development of effective fungicide. In this study, a series of 24 novel SDH inhibitors (SDHIs) were designed, synthesized, and characterized by 1H NMR, 13C NMR, and HRMS. In vitro fungicidal activity experiments, most of the compounds exhibited broad-spectrum antifungal activities against five plant pathogenic fungi. Compounds 9j and 9k showed excellent activities against Pythium aphanidermatum with EC50 values of 9.93 mg/L and 10.50 mg/L, respectively, which were superior to the lead compound Fluopyram with an EC50 value of 19.10 mg/L. Furthermore, the toxicity of these compounds was also tested against Meloidogyne incognita J2 nematodes. The results indicated that compound 9x exhibited moderate nematicidal activity (LC50/48 h = 71.02 mg/L). Molecular docking showed that novel guanidine amide of 9j formed hydrogen bonds with crucial residues, which was crucial to the binding of an inhibitor and SDH. This present work indicates that these derivatives may serve as novel potential fungicides targeting SDH.
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Affiliation(s)
- Peibo Liang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Shengqiang Shen
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Qingbo Xu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Simin Wang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Shuhui Jin
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Huizhe Lu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Yanhong Dong
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Jianjun Zhang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China.
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Ren Y, Shi J, Mu Y, Tao K, Jin H, Hou T. AW1 Neuronal Cell Cytotoxicity: The Mode of Action of Insecticidal Fatty Acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12129-12136. [PMID: 31593462 DOI: 10.1021/acs.jafc.9b02197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To explore lead compounds for biological insecticides, nine fatty acids (FAs)' insecticidal activities against Helicoverpa zea (Lepidoptera, Noctuidae) and their cytotoxicity on H. zea neuronal cells (AW1 cells) were evaluated. The results showed that FAs at 1000 mg/L had a mortality rate of 10.0-83.33% and an inhibitory rate on AW1 cells with IC50 values of 74.6-287.37 μM. Particularly, lauric acid exhibited the most excellent bioactivity both in vivo and in vitro among nine FAs. Further, its mode of action was investigated on the AW1 cells, and the results showed that lauric acid induced apoptosis on the AW1 cells, involving a decrease of mitochondrial membrane potential (ΔΨm) and an increase of caspase-9/3 activity and reactive oxygen species (ROS) levels. Furthermore, by detecting the expression of apoptosis protein, we found that the levels of Bcl-2 fell whereas the levels of cytochrome c and Bax rose remarkably. These results showed that FAs such as lauric acid could be potential lead compounds with a novel mode of action and highly insecticidal activity against H. zea.
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Affiliation(s)
- Yuanhang Ren
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
- College of Pharmacy and Biological Engineering , Chengdu University , Chengdu , Sichuan 610106 , China
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs , Chengdu , Sichuan 610106 , China
| | - Jiaxing Shi
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
| | - Yangping Mu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
| | - Ke Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
| | - Taiping Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences , Sichuan University , Chengdu , Sichuan 610017 , China
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16
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Reall T, Kraus S, Goodman CL, Ringbauer J, Geibel S, Stanley D. Next-generation cell lines established from the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae). In Vitro Cell Dev Biol Anim 2019; 55:686-693. [PMID: 31410641 DOI: 10.1007/s11626-019-00394-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/01/2019] [Indexed: 12/30/2022]
Abstract
The fall armyworm, Spodoptera frugiperda (Sf), is a polyphagous lepidopteran herbivore that consumes more than 80 plant species, including many economically important crops, such as corn, soybeans, and sorghum. While already a serious pest in the Americas, it was recently introduced into Africa, India, and China. Because of its high economic costs in the New World and the continent-wide damage potentials in Africa, research to develop advanced pest management technologies is necessary. We are supporting this need by developing novel, next-generation insect cell lines from targeted tissues. Cell lines, such as these, will boost insecticide discovery programs and lead to innovative pest management solutions. Here, we report on the establishment of 16 new cell lines from larval S. frugiperda tissues: nine from the central nervous system, three from the aorta, and four from the testes. We confirmed the identities of the cell lines by DNA amplification fingerprinting polymerase chain reaction, determined their doubling times from growth curves, and described cell types via microscopy. We also developed 16 sublines from three neuronal cell lines.
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Affiliation(s)
- Tamra Reall
- Biological Control of Insects Research Laboratory, USDA/Agricultural Research Service, 1503 South Providence Road, Columbia, MO, 65203, USA
| | | | - Cynthia L Goodman
- Biological Control of Insects Research Laboratory, USDA/Agricultural Research Service, 1503 South Providence Road, Columbia, MO, 65203, USA.
| | - Joseph Ringbauer
- Biological Control of Insects Research Laboratory, USDA/Agricultural Research Service, 1503 South Providence Road, Columbia, MO, 65203, USA
| | | | - David Stanley
- Biological Control of Insects Research Laboratory, USDA/Agricultural Research Service, 1503 South Providence Road, Columbia, MO, 65203, USA
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Elnagdy HMF, Sarma D. FeCl 3
/PVP as Green Homogeneous Catalyst to Synthesize 5-Amino-1 H
-Pyrazole-4-Carbonitriles from Malononitrile Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201802919] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hanan M. F. Elnagdy
- Department of Chemistry; Dibrugarh University; Dibrugarh 786004, Assam India
| | - Diganta Sarma
- Department of Chemistry; Dibrugarh University; Dibrugarh 786004, Assam India
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18
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Zhang H, Li Y, Reall T, Xu Y, Goodman C, Saathoff S, Ringbauer J, Stanley D. Characterization of cell lines derived from the southern armyworm, Spodoptera eridania. In Vitro Cell Dev Biol Anim 2018; 54:749-755. [DOI: 10.1007/s11626-018-0300-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/27/2018] [Indexed: 12/14/2022]
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