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Kaniski AJ, Almahdi YA, Matti DI, McLaughlin AJ, Najem SM, Xhabija B. Spinosyn A exerts anti-tumorigenic effects on progesterone-sensitive ERα-positive breast cancer cells by modulating multiple signaling pathways. Biomed Pharmacother 2024; 171:116156. [PMID: 38266623 DOI: 10.1016/j.biopha.2024.116156] [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: 05/28/2023] [Revised: 01/02/2024] [Accepted: 01/11/2024] [Indexed: 01/26/2024] Open
Abstract
Breast cancer is one of the most common and deadly cancers in women worldwide. Current treatments for breast cancer have limitations, such as toxicity, resistance, and side effects. Therefore, there is a need to develop new and effective anti-cancer agents from natural sources. Spinosyn A (SPA) is a natural product derived from soil bacteria. SPA has been reported to have anti-parasitic, insecticidal, and anti-bacterial activities. However, its anti-cancer effects and mechanisms are not well understood. In this study, we investigated the effects of SPA on T47-D, estrogen receptor-positive breast cancer cells. We found that SPA inhibited cell proliferation and migration and induced apoptosis and cell cycle arrest. Flow cytometry and holographic imaging microscopy revealed that SPA activated MAPK and PI3K signaling pathways and altered cellular morphology. Finally, RNA-Seq analysis revealed that SPA treatment altered the expression of 1380 genes in T47-D cells, which were enriched in various biological processes and signaling pathways related to cell proliferation, cholesterol metabolism, growth factor activity, amino acid transport activity, extracellular matrix, PI3K-Akt signaling pathway, neuroactive ligand-receptor interaction, and PPAR signaling pathway. Our results suggest that SPA exerts multiple anti-cancer effects on T47-D cells by modulating multiple pathways and cellular processes involved in cell growth, survival, and motility. Our findings provide new insights into the molecular mechanisms of SPA action on breast cancer cells and its potential applications as a novel anti-cancer agent.
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Affiliation(s)
- Anthony J Kaniski
- College of Arts Sciences and Letters, Department of Natural Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
| | - Yazan A Almahdi
- College of Arts Sciences and Letters, Department of Natural Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
| | - Darena I Matti
- College of Arts Sciences and Letters, Department of Natural Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
| | - Aidan J McLaughlin
- College of Arts Sciences and Letters, Department of Natural Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
| | - Steven M Najem
- College of Engineering and Computer Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA
| | - Besa Xhabija
- College of Arts Sciences and Letters, Department of Natural Science, University of Michigan-Dearborn, Dearborn, MI 48128, USA.
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Horak I, Horn S, Pieters R. The benefit of using in vitro bioassays to screen agricultural samples for oxidative stress: South Africa's case. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2023; 58:689-710. [PMID: 37814453 DOI: 10.1080/03601234.2023.2264739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Applied pesticides end up in non-target environments as complex mixtures. When bioavailable, these chemicals pose a threat to living organisms and can induce oxidative stress (OS). In this article, attention is paid to OS and the physiological role of the antioxidant defense system. South African and international literature was reviewed to provide extensive evidence of pesticide-induced OS in non-target organisms, in vivo and in vitro. Although in vitro approaches are used internationally, South African studies have only used in vivo methods. Considering ethical implications, the authors support the use of in vitro bioassays to screen environmental matrices for their OS potential. Since OS responses are initiated and measurable at lower cellular concentrations compared to other toxicity endpoints, in vitro OS bioassays could be used as an early warning sign for the presence of chemical mixtures in non-target environments. Areas of concern in the country could be identified and prioritized without using animal models. The authors conclude that it will be worthwhile for South Africa to include in vitro OS bioassays as part of a battery of tests to screen environmental matrices for biological effects. This will facilitate the development and implementation of biomonitoring programs to safeguard the South African environment.
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Affiliation(s)
- Ilzé Horak
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
- Occupational Hygiene and Health Research Initiative, North-West University, Potchefstroom, South Africa
| | - Suranie Horn
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
- Occupational Hygiene and Health Research Initiative, North-West University, Potchefstroom, South Africa
| | - Rialet Pieters
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
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3
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Wu M, Bian J, Han S, Zhang C, Xu W, Tao L, Li Z, Zhang Y. Characterization of hepatotoxic effects induced by pyraclostrobin in human HepG2 cells and zebrafish larvae. CHEMOSPHERE 2023; 340:139732. [PMID: 37549743 DOI: 10.1016/j.chemosphere.2023.139732] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 07/16/2023] [Accepted: 08/03/2023] [Indexed: 08/09/2023]
Abstract
Pyraclostrobin is a highly effective and broad-spectrum strobilurin fungicide. With the widespread use of pyraclostrobin to prevent and control crop diseases, its environmental pressure and potential safety risks to humans have attracted much attention. Herein, the toxicological risks of pyraclostrobin toward HepG2 cells and the mechanisms of intoxication in vitro were investigated. The liver toxicity of pyraclostrobin in zebrafish larvae was also evaluated. It was found that pyraclostrobin induced DNA damage and reactive oxygen species generation in HepG2 cells, indicating the potential genotoxicity of pyraclostrobin. The results of fluorescent staining experiments and the expression of cytochrome c, Bcl-2 and Bax demonstrated that pyraclostrobin induced mitochondrial dysfunction, resulting in cell apoptosis. Monodansylcadaverine staining and autophagy marker-related proteins LC3, p62, Beclin-1 protein expression showed that pyraclostrobin promoted cell autophagy. Furthermore, immunoblotting analysis suggested that pyraclostrobin induced autophagy accompanied with activation of adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK)/mTOR signaling pathway. Visualization of zebrafish liver and oil red staining indicated that pyraclostrobin could induce liver degeneration and liver steatosis in zebrafish. Collectively, these results help to better understand the hepatotoxicity of pyraclostrobin and provide a scientific basis for its safe applications and risk control.
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Affiliation(s)
- Mengqi Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Jinhao Bian
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Shuang Han
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Cheng Zhang
- Department of Pathology, UT Southwestern Medical Center, Dallas, TX, 75390, United States.
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China; State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
| | - Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, PR China.
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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, 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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Toopaang W, Bunnak W, Srisuksam C, Wattananukit W, Tanticharoen M, Yang YL, Amnuaykanjanasin A. Microbial polyketides and their roles in insect virulence: from genomics to biological functions. Nat Prod Rep 2022; 39:2008-2029. [PMID: 35822627 DOI: 10.1039/d1np00058f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: May 1966 up to January 2022Entomopathogenic microorganisms have potential for biological control of insect pests. Their main secondary metabolites include polyketides, nonribosomal peptides, and polyketide-nonribosomal peptide (PK-NRP) hybrids. Among these secondary metabolites, polyketides have mainly been studied for structural identification, pathway engineering, and for their contributions to medicine. However, little is known about the function of polyketides in insect virulence. This review focuses on the role of bacterial and fungal polyketides, as well as PK-NRP hybrids in insect infection and killing. We also discuss gene distribution and evolutional relationships among different microbial species. Further, the role of microbial polyketides and the hybrids in modulating insect-microbial symbiosis is also explored. Understanding the mechanisms of polyketides in insect pathogenesis, how compounds moderate the host-fungus interaction, and the distribution of PKS genes across different fungi and bacteria will facilitate the discovery and development of novel polyketide-derived bio-insecticides.
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Affiliation(s)
- Wachiraporn Toopaang
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand. .,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica and National Chung Hsing University, Taiwan.,Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan.
| | - Warapon Bunnak
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Chettida Srisuksam
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Wilawan Wattananukit
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Morakot Tanticharoen
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan. .,Biotechnology Center in Southern Taiwan, Academia Sinica, Tainan 711010, Taiwan
| | - Alongkorn Amnuaykanjanasin
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
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Díaz-Resendiz KJG, Hermosillo-Escobedo AT, Ventura-Ramón GH, Toledo-Ibarra GA, Girón-Pérez DA, Bueno-Durán AY, Girón-Pérez MI. Death of guppy fish ( Poecilia reticulata) leukocytes induced by in vivo exposure to temephos and spinosad. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:701-711. [PMID: 32662663 DOI: 10.1080/09603123.2020.1791803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Temephos and spinosad are pesticides used for control of vector-borne diseases such as dengue, chikungunya and zika. However, the inadequate use of these substances has affected the health of non-target organisms. The aim of this study was to evaluate and compare, the effects of temephos and spinosad on leukocyte viability and death, using guppy fish (Poecilia reticulate) as a model organism. Guppies were exposed to temephos (10 mg/L) and spinosad (0.5 mg/L) for 7, 14, and 21 days. Afterwards, they were placed in pesticide-free fish tanks (7, 35, and 70 days) for recovery. The results showed that exposure to temephos caused leukocyte death, even at 35 days of recovery. Contrarily, the exposure to spinosad did not cause leukocyte death. This research show, for the first time, that a single dose of temephos causes apoptosis up to 56 days post-exposition, indicating that this pesticide induces chronic effects on immune response cells.
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Affiliation(s)
- K J G Díaz-Resendiz
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
- Laboratorio de Inmunotoxicología, Universidad Autónoma de Nayarit. Secretaría de Investigación y Posgrado, Tepic, México
| | - A T Hermosillo-Escobedo
- Laboratorio de Inmunotoxicología, Universidad Autónoma de Nayarit. Secretaría de Investigación y Posgrado, Tepic, México
| | - G H Ventura-Ramón
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
| | - G A Toledo-Ibarra
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
- Laboratorio de Inmunotoxicología, Universidad Autónoma de Nayarit. Secretaría de Investigación y Posgrado, Tepic, México
| | - D A Girón-Pérez
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
| | - A Y Bueno-Durán
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
| | - M I Girón-Pérez
- Unidad Especializada Laboratorio Nacional de Investigación para la Inocuidad Alimentaria (LANIIA)-Unidad Nayarit, Centro Nayarita de Innovación y Transferencia de Tecnología A.C., Tepic, México
- Laboratorio de Inmunotoxicología, Universidad Autónoma de Nayarit. Secretaría de Investigación y Posgrado, Tepic, México
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Martelli F, Hernandes NH, Zuo Z, Wang J, Wong CO, Karagas NE, Roessner U, Rupasinghe T, Robin C, Venkatachalam K, Perry T, Batterham P, Bellen HJ. Low doses of the organic insecticide spinosad trigger lysosomal defects, elevated ROS, lipid dysregulation, and neurodegeneration in flies. eLife 2022; 11:73812. [PMID: 35191376 PMCID: PMC8863376 DOI: 10.7554/elife.73812] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 01/28/2022] [Indexed: 12/14/2022] Open
Abstract
Large-scale insecticide application is a primary weapon in the control of insect pests in agriculture. However, a growing body of evidence indicates that it is contributing to the global decline in population sizes of many beneficial insect species. Spinosad emerged as an organic alternative to synthetic insecticides and is considered less harmful to beneficial insects, yet its mode of action remains unclear. Using Drosophila, we show that low doses of spinosad antagonize its neuronal target, the nicotinic acetylcholine receptor subunit alpha 6 (nAChRα6), reducing the cholinergic response. We show that the nAChRα6 receptors are transported to lysosomes that become enlarged and increase in number upon low doses of spinosad treatment. Lysosomal dysfunction is associated with mitochondrial stress and elevated levels of reactive oxygen species (ROS) in the central nervous system where nAChRα6 is broadly expressed. ROS disturb lipid storage in metabolic tissues in an nAChRα6-dependent manner. Spinosad toxicity is ameliorated with the antioxidant N-acetylcysteine amide. Chronic exposure of adult virgin females to low doses of spinosad leads to mitochondrial defects, severe neurodegeneration, and blindness. These deleterious effects of low-dose exposures warrant rigorous investigation of its impacts on beneficial insects.
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Affiliation(s)
- Felipe Martelli
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | | | - Zhongyuan Zuo
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, United States
| | - Julia Wang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, United States
| | - Ching-On Wong
- Department of Integrative Biology and Pharmacology, McGovern Medical School at the University of Texas Health Sciences Center, Houston, United States
| | - Nicholas E Karagas
- Department of Integrative Biology and Pharmacology, McGovern Medical School at the University of Texas Health Sciences Center, Houston, United States
| | - Ute Roessner
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Thusita Rupasinghe
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Charles Robin
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Kartik Venkatachalam
- Department of Integrative Biology and Pharmacology, McGovern Medical School at the University of Texas Health Sciences Center, Houston, United States
| | - Trent Perry
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Philip Batterham
- School of BioSciences, The University of Melbourne, Melbourne, Australia
| | - Hugo J Bellen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, United States.,Neurological Research Institute, Texas Children Hospital, Houston, United States.,Howard Hughes Medical Institute, Baylor College of Medicine, Houston, United States
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Nguyen J, Ghazali R, Batterham P, Perry T. Inhibiting the proteasome reduces molecular and biological impacts of the natural product insecticide, spinosad. PEST MANAGEMENT SCIENCE 2021; 77:3777-3786. [PMID: 33481333 DOI: 10.1002/ps.6290] [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] [Received: 07/19/2020] [Revised: 01/01/2021] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Insecticide targets are often identified by mutations that confer resistance, but the intricacies of insecticide binding and downstream processes leading to insect death often remain obscure. Mutations in α6-like nicotinic acetylcholine receptor subunit genes have been associated with high levels of resistance to spinosad in many insect species, including Drosophila melanogaster. Here, we aimed to expand our understanding of the effects of the natural product insecticide spinosad on its protein target, the α6 subunit, using genetic tools available in D. melanogaster. RESULTS Functional, fluorescently tagged Dα6 subunits (Dα6YFP ) were developed to allow observation of the protein in vivo. Larvae expressing Dα6YFP were exposed to a sub-lethal concentration of spinosyn A (0.025 ppm) for 6 days, leading to a 64% reduction in fluorescence relative to unexposed larvae. Direct application of high doses of spinosyn A to dissected larval brains resulted in a visible 38.25% decrease in Dα6YFP within 20 min, indicating that degradation of the Dα6 protein occurred in response to spinosyn A exposure. Chemical inhibition of the proteasome system using the multiple myeloma treatment drug, PS-341 reduced loss of Dα6YFP in response to spinosyn A at the 20-min time point to 6.35%. In addition, in vivo administration of PS-341 prior to spinosad exposure reduced the effect of spinosad on larval activity. CONCLUSION Based on these data, we propose that exposure to spinosad leads to degradation of the α6-like target protein, a potentially novel element in the mode of action of spinosyns that may contribute to their toxicity towards insects. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Joseph Nguyen
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Australia
| | - Razi Ghazali
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Australia
| | - Philip Batterham
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Australia
| | - Trent Perry
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Australia
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Bastarache P, Wajnberg G, Dumas P, Chacko S, Lacroix J, Crapoulet N, Moffat CE, Morin P. Transcriptomics-Based Approach Identifies Spinosad-Associated Targets in the Colorado Potato Beetle, Leptinotarsa decemlineata. INSECTS 2020; 11:insects11110820. [PMID: 33233355 PMCID: PMC7700309 DOI: 10.3390/insects11110820] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/13/2022]
Abstract
Simple Summary The Colorado potato beetle Leptinotarsa decemlineata is a potato pest that can cause substantial damages to potato crops worldwide. Multiple approaches have been leveraged to control this pest including the use of a variety of insecticides. Resistance to different insecticides aimed at controlling this insect has been reported and much work has been conducted in recent years to elucidate the underlying molecular changes associated with insecticide resistance in L. decemlineata. However, information is sparse regarding the molecular impact associated with spinosad treatment in this insect pest. The current study thus explores transcriptional changes associated with spinosad response in L. decemlineata exposed to this compound using high-throughput sequencing. Results presented show multiple transcripts of interest that exhibit differential expression in spinosad-treated L. decemlineata and provide a preliminary footprint of transcripts affected by this insecticide in this potato pest. Select targets identified in this signature should be further explored in follow-up studies to better characterize their contribution, if any, in the process of spinosad resistance. Abstract The Colorado potato beetle Leptinotarsa decemlineata is an insect pest that threatens potato crops globally. The primary method to control its damage on potato plants is the use of insecticides, including imidacloprid, chlorantraniliprole and spinosad. However, insecticide resistance has been frequently observed in Colorado potato beetles. The molecular targets and the basis of resistance to imidacloprid and chlorantraniliprole have both been previously quantified. This work was undertaken with the overarching goal of better characterizing the molecular changes associated with spinosad exposure in this insect pest. Next-generation sequencing was conducted to identify transcripts that were differentially expressed between Colorado potato beetles exposed to spinosad versus control insects. Results showed several transcripts that exhibit different expression levels between the two conditions, including ones coding for venom carboxylesterase-6, chitinase 10, juvenile hormone esterase and multidrug resistance-associated protein 4. In addition, several microRNAs, such as miR-12-3p and miR-750-3p, were also modulated in the investigated conditions. Overall, this work reveals a molecular footprint underlying spinosad response in Colorado potato beetles and provides novel leads that could be targeted as part of RNAi-based approaches to control this insect pest.
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Affiliation(s)
- Pierre Bastarache
- Department of Chemistry and Biochemistry, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada; (P.B.); (P.D.)
| | - Gabriel Wajnberg
- Atlantic Cancer Research Institute, Pavillon Hôtel-Dieu 35 Providence Street, Moncton, NB E1C 8X3, Canada; (G.W.); (S.C.); (J.L.); (N.C.)
| | - Pascal Dumas
- Department of Chemistry and Biochemistry, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada; (P.B.); (P.D.)
| | - Simi Chacko
- Atlantic Cancer Research Institute, Pavillon Hôtel-Dieu 35 Providence Street, Moncton, NB E1C 8X3, Canada; (G.W.); (S.C.); (J.L.); (N.C.)
| | - Jacynthe Lacroix
- Atlantic Cancer Research Institute, Pavillon Hôtel-Dieu 35 Providence Street, Moncton, NB E1C 8X3, Canada; (G.W.); (S.C.); (J.L.); (N.C.)
| | - Nicolas Crapoulet
- Atlantic Cancer Research Institute, Pavillon Hôtel-Dieu 35 Providence Street, Moncton, NB E1C 8X3, Canada; (G.W.); (S.C.); (J.L.); (N.C.)
| | - Chandra E. Moffat
- Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, Fredericton, NB E3B 4Z7, Canada;
| | - Pier Morin
- Department of Chemistry and Biochemistry, Université de Moncton, 18 Antonine-Maillet Avenue, Moncton, NB E1A 3E9, Canada; (P.B.); (P.D.)
- Correspondence: ; Tel.: +1-(506)-858-4355; Fax: +1-(506)-858-4541
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McAfee A, Milone J, Chapman A, Foster LJ, Pettis JS, Tarpy DR. Candidate stress biomarkers for queen failure diagnostics. BMC Genomics 2020; 21:571. [PMID: 32819278 PMCID: PMC7441638 DOI: 10.1186/s12864-020-06992-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 08/13/2020] [Indexed: 01/15/2023] Open
Abstract
Background Queen failure is a persistent problem in beekeeping operations, but in the absence of overt symptoms it is often difficult, if not impossible, to ascertain the root cause. Stressors like heat-shock, cold-shock, and sublethal pesticide exposure can reduce stored sperm viability and lead to cryptic queen failure. Previously, we suggested candidate protein markers indicating heat-shock in queens. Here, we further investigate these heat-shock markers and test new stressors to identify additional candidate protein markers. Results We found that heat-shocking queens for upwards of 1 h at 40 °C was necessary to induce significant changes in the two strongest candidate heat-shock markers, and that relative humidity significantly influenced the degree of activation. In blind heat-shock experiments, we tested the efficiency of these markers at assigning queens to their respective treatment groups and found that one marker was sufficient to correctly assign queens 75% of the time. Finally, we compared cold-shocked queens at 4 °C and pesticide-exposed queens to controls to identify candidate markers for these additional stressors, and compared relative abundances of all markers to queens designated as ‘healthy’ and ‘failing’ by beekeepers. Queens that failed in the field had higher expression of both heat-shock and pesticide protein markers, but not cold-shock markers. Conclusions This work offers some of the first steps towards developing molecular diagnostic tools to aid in determining cryptic causes of queen failure. Further work will be necessary to determine how long after the stress event a marker’s expression remains elevated, and how accurate these markers will be for field diagnoses.
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Affiliation(s)
- Alison McAfee
- Department of Entomology & Plant Pathology, North Carolina State University, Raleigh, North Carolina, USA.
| | - Joseph Milone
- Department of Entomology & Plant Pathology, North Carolina State University, Raleigh, North Carolina, USA
| | - Abigail Chapman
- Department of Biochemistry and Molecular Biology, Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada
| | - Leonard J Foster
- Department of Biochemistry and Molecular Biology, Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - David R Tarpy
- Department of Entomology & Plant Pathology, North Carolina State University, Raleigh, North Carolina, USA
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Xiong Q, Tian X, Li W, Chen L, Zhou M, Xu C, Ru Q. Sulforaphane alleviates methamphetamine-induced oxidative damage and apoptosis via the Nrf2-mediated pathway in vitro and in vivo. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1784099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Qi Xiong
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Xiang Tian
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Weiling Li
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Lin Chen
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Mei Zhou
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Congyue Xu
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
| | - Qin Ru
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, PR People’s Republic of China
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Zhang Y, Guo W, Chen H, Gao J, Tao L, Li Z, Xu W. The cytotoxic effects of spinetoram on human HepG2 cells by inducing DNA damage and mitochondria-associated apoptosis. FOOD AGR IMMUNOL 2019. [DOI: 10.1080/09540105.2019.1650900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Wei Guo
- CCPIA International Trade Committee, China Crop Protection Industry Association, Beijing, People’s Republic of China
| | - Hui Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Jufang Gao
- College of Life Sciences, Shanghai Normal University, Shanghai, People’s Republic of China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
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Zhang Y, Fan Y, Gao J, Xu W, Xu Z, Liu Y, Li Z, Tao L. A new 24-membered macrolide shows insecticidal activity against Pieris rapae potentially through induction of programmed cell death. FOOD AGR IMMUNOL 2019. [DOI: 10.1080/09540105.2019.1626808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Yangyang Fan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Jufang Gao
- College of Life Sciences, Shanghai Normal University, Shanghai, People’s Republic of China
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Yutian Liu
- College of Life Sciences, Shanghai Normal University, Shanghai, People’s Republic of China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, People’s Republic of China
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