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Gubert P, Gubert G, de Oliveira RC, Fernandes ICO, Bezerra IC, de Ramos B, de Lima MF, Rodrigues DT, da Cruz AFN, Pereira EC, Ávila DS, Mosca DH. Caenorhabditis elegans as a Prediction Platform for Nanotechnology-Based Strategies: Insights on Analytical Challenges. TOXICS 2023; 11:239. [PMID: 36977004 PMCID: PMC10059662 DOI: 10.3390/toxics11030239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Nanotechnology-based strategies have played a pivotal role in innovative products in different technological fields, including medicine, agriculture, and engineering. The redesign of the nanometric scale has improved drug targeting and delivery, diagnosis, water treatment, and analytical methods. Although efficiency brings benefits, toxicity in organisms and the environment is a concern, particularly in light of global climate change and plastic disposal in the environment. Therefore, to measure such effects, alternative models enable the assessment of impacts on both functional properties and toxicity. Caenorhabditis elegans is a nematode model that poses valuable advantages such as transparency, sensibility in responding to exogenous compounds, fast response to perturbations besides the possibility to replicate human disease through transgenics. Herein, we discuss the applications of C. elegans to nanomaterial safety and efficacy evaluations from one health perspective. We also highlight the directions for developing appropriate techniques to safely adopt magnetic and organic nanoparticles, and carbon nanosystems. A description was given of the specifics of targeting and treatment, especially for health purposes. Finally, we discuss C. elegans potential for studying the impacts caused by nanopesticides and nanoplastics as emerging contaminants, pointing out gaps in environmental studies related to toxicity, analytical methods, and future directions.
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Affiliation(s)
- Priscila Gubert
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Pure and Applied Chemistry, POSQUIPA, Federal University of Western of Bahia, Bahia 47808-021, Brazil
| | - Greici Gubert
- Postdoctoral Program in Chemistry, Federal University of São Carlos, São Carlos 13565-905, Brazil
| | | | - Isabel Cristina Oliveira Fernandes
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
| | | | - Bruna de Ramos
- Oceanography Department, Federal University of Pernambuco, Recife 50670-901, Brazil
| | - Milena Ferreira de Lima
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
| | - Daniela Teixeira Rodrigues
- Graduate Program in Biological Sciences, Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria 97105-900, Brazil
| | | | - Ernesto Chaves Pereira
- Postdoctoral Program in Chemistry, Federal University of São Carlos, São Carlos 13565-905, Brazil
| | - Daiana Silva Ávila
- Graduate Program in Biological Sciences, Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria 97105-900, Brazil
- Graduate Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana 97501-970, Brazil
| | - Dante Homero Mosca
- Postdoctoral Program in Physics, Federal University of Paraná, Curitiba 80060-000, Brazil
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2
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Yang R, Ge P, Liu X, Chen W, Yan Z, Chen M. Chemical Composition and Transgenerational Effects on Caenorhabditis elegans of Seasonal Fine Particulate Matter. TOXICS 2023; 11:116. [PMID: 36850991 PMCID: PMC9964627 DOI: 10.3390/toxics11020116] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
While numerous studies have demonstrated the adverse effects of fine particulate matter (PM) on human health, little attention has been paid to its impact on offspring health. The multigenerational toxic effects on Caenorhabditis elegans (C. elegans) were investigated by acute exposure. PM2.5 and PM1 samples were collected and analysed for their chemical composition (inorganic ions, metals, OM, PAHs) in different seasons from April 2019 to January 2020 in Lin'an, China. A higher proportion of organic carbon components (34.3%, 35.9%) and PAHs (0.0144%, 0.0200%) occupied the PM2.5 and PM1 samples in winter, respectively. PM1 in summer was enriched with some metal elements (2.7%). Exposure to fine PM caused developmental slowing and increased germ cell apoptosis, as well as inducing intestinal autofluorescence and reactive oxygen species (ROS) production. PM1 caused stronger toxic effects than PM2.5. The correlation between PM component and F0 generation toxicity index was analysed. Body length, germ cell apoptosis and intestinal autofluorescence were all highly correlated with Cu, As, Pb, OC and PAHs, most strongly with PAHs. The highest correlation coefficients between ROS and each component are SO42- (R = 0.743), Cd (R = 0.816) and OC (R = 0.716). The results imply that OC, PAHs and some transition metals play an important role in the toxicity of fine PM to C. elegans, where the organic fraction may be the key toxicogenic component. The multigenerational studies show that PM toxicity can be passed from parent to offspring, and gradually returns to control levels in the F3-F4 generation with germ cell apoptosis being restored in the F4 generation. Therefore, the adverse effects of PM on reproductive damage are more profound.
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Donnelly BF, Yang B, Grimme AL, Vieux KF, Liu CY, Zhou L, McJunkin K. The developmentally timed decay of an essential microRNA family is seed-sequence dependent. Cell Rep 2022; 40:111154. [PMID: 35947946 PMCID: PMC9413084 DOI: 10.1016/j.celrep.2022.111154] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 06/04/2022] [Accepted: 07/13/2022] [Indexed: 12/14/2022] Open
Abstract
MicroRNA (miRNA) abundance is tightly controlled by regulation of biogenesis and decay. Here, we show that the mir-35 miRNA family undergoes selective decay at the transition from embryonic to larval development in C. elegans. The seed sequence of the miRNA is necessary and largely sufficient for this regulation. Sequences outside the seed (3' end) regulate mir-35 abundance in the embryo but are not necessary for sharp decay at the transition to larval development. Enzymatic modifications of the miRNA 3' end are neither prevalent nor correlated with changes in decay, suggesting that miRNA 3' end display is not a core feature of this mechanism and further supporting a seed-driven decay model. Our findings demonstrate that seed-sequence-specific decay can selectively and coherently regulate all redundant members of a miRNA seed family, a class of mechanism that has great biological and therapeutic potential for dynamic regulation of a miRNA family's target repertoire.
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Affiliation(s)
- Bridget F Donnelly
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA; Johns Hopkins University Department of Biology, 3400 N. Charles Street, Baltimore, MD 21218, USA
| | - Bing Yang
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA
| | - Acadia L Grimme
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA; Johns Hopkins University Department of Biology, 3400 N. Charles Street, Baltimore, MD 21218, USA
| | - Karl-Frédéric Vieux
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA
| | - Chen-Yu Liu
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA
| | - Lecong Zhou
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA
| | - Katherine McJunkin
- Laboratory of Cellular and Developmental Biology, NIDDK Intramural Research Program, 50 South Drive, Bethesda, MD 20892, USA.
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4
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Zhao Y, Xu R, Hua X, Rui Q, Wang D. Multi-walled carbon nanotubes induce transgenerational toxicity associated with activation of germline long non-coding RNA linc-7 in C.elegans. CHEMOSPHERE 2022; 301:134687. [PMID: 35472608 DOI: 10.1016/j.chemosphere.2022.134687] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/14/2022] [Accepted: 04/20/2022] [Indexed: 05/21/2023]
Abstract
With the increase in application, multi-walled carbon nanotubes (MWCNTs) are potentially bioavailable to environmental organisms. However, the potential transgenerational effect of MWCNTs and underlying mechanisms remains still unclear. Here, we examined transgenerational MWCNT toxicity and the underlying mechanism mediated by germline long non-coding RNAs (lncRNAs) in Caenorhabditis elegans. Exposure to 0.1-10 μg/L MWCNT caused transgenerational toxicity reflected by endpoints of brood size and locomotion behavior. Meanwhile, among germline lncRNAs, expression of 5 lncRNAs were dysregulated by MWCNT exposure. Among these 5 dysregulated lncRNAs, only germline RNAi of linc-7 affected MWCNT toxicity. Increase in germline linc-7 expression was observed transgenerationally, and transgenerational MWCNT toxicity was prevented in linc-7(RNAi) nematodes. Moreover, germline linc-7 controlled transgenerational MWCNT toxicity by activating downstream DAF-12, a transcriptional factor. Therefore, our data indicated the association between induction of transgenerational MWCNT toxicity and increase in germline linc-7 expression in organisms.
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Affiliation(s)
- Yingyue Zhao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ruoran Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xin Hua
- Medical School, Southeast University, Nanjing, 210009, China
| | - Qi Rui
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Dayong Wang
- Medical School, Southeast University, Nanjing, 210009, China.
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5
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Sun A, Li Z, Zhao X, Zhou H, Gao Y, Liu Q, Zhou S, Zhang C, Dong G, Wang C. Pulsed High-Peak Power Microwaves at 9.4 GHz Do Not Affect Basic Endpoints in Caenorhabditis elegans. Bioelectromagnetics 2021; 43:5-13. [PMID: 34962293 DOI: 10.1002/bem.22383] [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: 09/17/2020] [Revised: 07/14/2021] [Accepted: 12/06/2021] [Indexed: 11/07/2022]
Abstract
Because of the extensive application of electromagnetic technology, its health impact on humans has attracted widespread attention. Due to the lack of a model organism with a stable response to electromagnetic waves, the research conclusions on the biological effects of electromagnetic waves have been vague. Therefore, the aim of this study was to investigate the effects of irradiation by pulsed 9.4 GHz high-power microwaves with a peak power density of 2126 W/cm2 using Caenorhabditis elegans. The development, movement, egg production, ROS, and lifespan of C. elegans were detected at different times after irradiation with different repetitive frequencies of 10, 20, and 50 Hz for 30 min. The results indicated that no obvious changes in basic life indices were induced compared with the sham radiation group, but the survival rate of positive control was significantly decreased compared with other groups, which is of interest for microwave protection research based on C. elegans and provides data for updating safety standards with respect to pulsed high-peak power microwave. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
- Aihua Sun
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Zhihui Li
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Xuelong Zhao
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Hongmei Zhou
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Yan Gao
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Qi Liu
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Sen Zhou
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Chenggang Zhang
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Guofu Dong
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
| | - Changzhen Wang
- Laboratory of Electromagnetic Biological Effects, Beijing Institute of Radiation and Medicine, Beijing, China
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6
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Zakharova OV, Mastalygina EE, Golokhvast KS, Gusev AA. Graphene Nanoribbons: Prospects of Application in Biomedicine and Toxicity. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2425. [PMID: 34578739 PMCID: PMC8469389 DOI: 10.3390/nano11092425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/06/2021] [Accepted: 09/11/2021] [Indexed: 12/12/2022]
Abstract
Graphene nanoribbons are a type of graphene characterized by remarkable electrical and mechanical properties. This review considers the prospects for the application of graphene ribbons in biomedicine, taking into account safety aspects. According to the analysis of the recent studies, the topical areas of using graphene nanoribbons include mechanical, chemical, photo- and acoustic sensors, devices for the direct sequencing of biological macromolecules, including DNA, gene and drug delivery vehicles, and tissue engineering. There is evidence of good biocompatibility of graphene nanoribbons with human cell lines, but a number of researchers have revealed toxic effects, including cytotoxicity and genotoxicity. Moreover, the damaging effects of nanoribbons are often higher than those of chemical analogs, for instance, graphene oxide nanoplates. The possible mechanism of toxicity is the ability of graphene nanoribbons to damage the cell membrane mechanically, stimulate reactive oxidative stress (ROS) production, autophagy, and inhibition of proliferation, as well as apoptosis induction, DNA fragmentation, and the formation of chromosomal aberrations. At the same time, the biodegradability of graphene nanoribbons under the environmental factors has been proven. In general, this review allows us to conclude that graphene nanoribbons, as components of high-precision nanodevices and therapeutic agents, have significant potential for biomedical applications; however, additional studies of their safety are needed. Particular emphasis should be placed on the lack of information about the effect of graphene nanoribbons on the organism as a whole obtained from in vivo experiments, as well as about their ecological toxicity, accumulation, migration, and destruction within ecosystems.
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Affiliation(s)
- Olga V. Zakharova
- Research Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 33 Internatsionalnaya St., 392000 Tambov, Russia;
- Engineering Center, Plekhanov Russian University of Economics, Stremyanny Lane 36, 117997 Moscow, Russia;
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology MISiS, 4 Leninskiy prospekt, 119049 Moscow, Russia
| | - Elena E. Mastalygina
- Engineering Center, Plekhanov Russian University of Economics, Stremyanny Lane 36, 117997 Moscow, Russia;
- Laboratory of Physics-Chemistry of Synthetic and Natural Polymers Composites, Institute of Biochemical Physics Named after N.M. Emanuel RAS (IBCP RAS), Russian Academy of Sciences, 4 Kosygin St., 119991 Moscow, Russia
| | - Kirill S. Golokhvast
- Polytechnical Institute, Far Eastern Federal University, Sukhanova 8, 690950 Vladivostok, Russia;
- Siberian Federal Scientific Center for Agrobiotechnology RAS, Centralnaya 2B, 630501 Krasnoobsk, Russia
- Pacific Geographical Institute, Far Eastern Branch of the Russian Academy of Sciences, Radio 7, 690041 Vladivostok, Russia
| | - Alexander A. Gusev
- Research Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 33 Internatsionalnaya St., 392000 Tambov, Russia;
- Engineering Center, Plekhanov Russian University of Economics, Stremyanny Lane 36, 117997 Moscow, Russia;
- Research Educational Center Sustainable Development of the Forest Complex, Voronezh State Forestry University Named after G F Morozov, 394087 Voronezh, Russia
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7
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Li Y, Zhong L, Zhang L, Shen X, Kong L, Wu T. Research Advances on the Adverse Effects of Nanomaterials in a Model Organism, Caenorhabditis elegans. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:2406-2424. [PMID: 34078000 DOI: 10.1002/etc.5133] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/03/2021] [Accepted: 06/01/2021] [Indexed: 06/12/2023]
Abstract
Along with the rapid development of nanotechnology, the biosafety assessment of nanotechnology products, including nanomaterials (NMs), has become more and more important. The nematode Caenorhabditis elegans is a valuable model organism that has been widely used in the field of biology because of its excellent advantages, including low cost, small size, short life span, and highly conservative genomes with vertebral animals. In recent years, the number of nanotoxicological researchers using C. elegans has been growing. According to these available studies, the present review classified the adverse effects of NMs in C. elegans into systematic, cellular, and molecular toxicity, and focused on summarizing and analyzing the underlying mechanisms of metal, metal oxide, and nonmetallic NMs causing toxic effects in C. elegans. Our findings provide insights into what further studies are needed to assess the biosafety of NMs in the ecosystem using C. elegans. Environ Toxicol Chem 2021;40:2406-2424. © 2021 SETAC.
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Affiliation(s)
- Yimeng Li
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Lishi Zhong
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Lili Zhang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Xiaobing Shen
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Lu Kong
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
| | - Tianshu Wu
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, People's Republic of China
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8
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Hassan A, Huang Q, Mehmood N, Xu H, Zhou W, Gao Y. Alteration of Termite Locomotion and Allogrooming in Response to Infection by Pathogenic Fungi. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:1256-1263. [PMID: 33909076 DOI: 10.1093/jee/toab071] [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: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Termites, being vulnerable to parasitic or pathogenic infections due to large number of individuals living together in colonies, have evolved various behavioral and physiological tactics to resist the infections by those pathogens. Locomotion can help termites collect information on parasites and accordingly exhibit hygienic behaviors. Termites inevitably encounter entomopathogenic fungi during nesting and foraging. However, how these fungal pathogens influence locomotion of termites and how hygienic behavior benefits their survival remains unknown. Here, we examined locomotion alteration of the termite Reticulitermes chinensis (Isoptera: Rhinotermitidae) after infections with different concentrations of the entomopathogenic fungus Metarhizium anisopliae (Hypocreales: Clavicipitaceae). When R. chinensis was isolated, the low concentration (5 × 103 conidia/ml) significantly increased termite locomotion after 6, 12, and 24 h compared with control. However, the high concentrations (5 × 107, 5 × 109 conidia/ml) significantly decreased termite locomotion after 48 h, and termite survival was also significantly lower at 5 × 107 and 5 × 109 conidia/ml compared with the low concentrations and the control. When R. chinensis was in group, however, the locomotion significantly increased 24 h after exposure to 5 × 103 and 5 × 109 conidia/ml but was normalized after 48 h of exposure compared with the control. Allogrooming was significantly higher at 5 × 103 and 5 × 109 conidia/ml compared with the control. The fungal infection did not result in significantly higher mortality of the group termites probably owing to their allogrooming. These findings enhance our understanding on how a termite species copes with biotic stress (i.e., fungal infections) via adaptive behaviors.
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Affiliation(s)
- Ali Hassan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiuying Huang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Nasir Mehmood
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Huan Xu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Wei Zhou
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Yongyong Gao
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China
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9
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Wang S, Zhang R, Wang D. Induction of protective response to polystyrene nanoparticles associated with methylation regulation in Caenorhabditis elegans. CHEMOSPHERE 2021; 271:129589. [PMID: 33453486 DOI: 10.1016/j.chemosphere.2021.129589] [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: 11/15/2020] [Revised: 12/17/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
The epigenetic regulation mechanisms for toxicity induction of nanoplastics in organisms remain largely unknown. In Caenorhabditis elegans, we found that prolonged exposure to 1-100 μg/L polystyrene nanoparticles (PS-NPs) decreased expression of MET-2, a H3K9 methyltransferase. Meanwhile, RNAi knockdown of met-2 suppressed the PS-NPs toxicity in inducing production of reactive oxygen species (ROS) and in decreasing locomotion behavior, which suggesting that the decrease in MET-2 expression reflected a protective response. This resistance to PS-NPs toxicity could be further detected in worms with met-2 RNAi knockdown in both intestinal cells and germline cells. In PS-NPs exposed worms, intestinal RNAi knockdown of met-2 significantly increased expressions of daf-16, bar-1, and elt-2. Intestinal RNAi knockdown of daf-16, bar-1, or elt-2 suppressed the resistance of met-2(RNAi) worms to PS-NPs toxicity, suggesting that MET-2 functioned upstream of ELT-2, BAR-1, and DAF-16 in intestinal cells to control PS-NPs toxicity. Moreover, in PS-NPs exposed worms, germline RNAi knockdown of met-2 significantly decreased expressions of wrt-3 and pat-12. RNAi knockdown of wrt-3 or pat-12 further inhibited the susceptibility of worms overexpressing germline MET-2 to PS-NPs toxicity, suggesting that MET-2 functioned upstream of PAT-12 and WRT-3 in germline cells to control PS-NPs toxicity. Therefore, our data provided an important molecular basis for MET-2-mediated methylation regulation in causing protective response to nanoplastics in organisms.
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Affiliation(s)
- Shuting Wang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Ruijie Zhang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China; Shenzhen Ruipuxun Academy for Stem Cell & Regenerative Medicine, Shenzhen, 518122, China; College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China.
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10
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Liu H, Kwak JI, Wang D, An YJ. Multigenerational effects of polyethylene terephthalate microfibers in Caenorhabditis elegans. ENVIRONMENTAL RESEARCH 2021; 193:110569. [PMID: 33275924 DOI: 10.1016/j.envres.2020.110569] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/25/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Microfibers (MFs) have recently become an increasingly prevalent pollutant in ecosystems and pose a direct threat to organisms and an indirect threat via adsorption of other pollutants. Here, we used Caenorhabditis elegans to study multigenerational effects of polyethylene terephthalate (PET) MFs (diameter 17.4 μm) by observing the maternal generation (P0) to the seventh offspring generation (F7) with continuous MF exposure. Exposure to 250-μm PET MFs decreased locomotion behavior and induced intestinal reactive oxygen species (ROS) in the P0 generation compared with other PET MF sizes. Moreover, no notably negative effects on survival were observed in any generation during continuous exposure to 250-μm PET MFs. However, the reproduction rate clearly decreased in the F2 and F3 generations but gradually recovered in the F4-F7 generations. Developmental abnormalities showed a close relationship with body length. Although some recovery was confirmed, there were significant decreases in body length in the F2-F5 generations. Interestingly, growth inhibition was also observed in the F6 generation without MF exposure. ROS production and dermal damage in the P0-F5 generations might have resulted in the toxicological responses. To the best of our knowledge, this is the first study to provide evidence of multigenerational toxicity of MFs in C. elegans.
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Affiliation(s)
- Huanliang Liu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Jin Il Kwak
- Department of Environmental Health Science, Konkuk University, Seoul, 05029, South Korea
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Youn-Joo An
- Department of Environmental Health Science, Konkuk University, Seoul, 05029, South Korea.
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11
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Guo T, Cheng L, Zhao H, Liu Y, Yang Y, Liu J, Wu Q. The C. elegans miR-235 regulates the toxicity of graphene oxide via targeting the nuclear hormone receptor DAF-12 in the intestine. Sci Rep 2020; 10:16933. [PMID: 33037257 PMCID: PMC7547681 DOI: 10.1038/s41598-020-73712-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 09/04/2020] [Indexed: 11/09/2022] Open
Abstract
The increased application of graphene oxide (GO), a new carbon-based engineered nanomaterial, has generated a potential toxicity in humans and the environment. Previous studies have identified some dysregulated microRNAs (miRNAs), such as up-regulated mir-235, in organisms exposed to GO. However, the detailed mechanisms of the dysregulation of miRNA underlying GO toxicity are still largely elusive. In this study, we employed Caenorhabditis elegans as an in vivo model to investigate the biological function and molecular basis of mir-235 in the regulation of GO toxicity. After low concentration GO exposure, mir-235 (n4504) mutant nematodes were sensitive to GO toxicity, implying that mir-235 mediates a protection mechanism against GO toxicity. Tissue-specific assays suggested that mir-235 expressed in intestine is required for suppressing the GO toxicity in C. elegans. daf-12, a gene encoding a member of the steroid hormone receptor superfamily, acts as a target gene of mir-235 in the nematode intestine in response to GO treatment, and RNAi knockdown of daf-12 suppressed the sensitivity of mir-235(n4503) to GO toxicity. Further genetic analysis showed that DAF-12 acted in the upstream of DAF-16 in insulin/IGF-1 signaling pathway and PMK-1 in p38 MAPK signaling pathway in parallel to regulate GO toxicity. Altogether, our results revealed that mir-235 may activate a protective mechanism against GO toxicity by suppressing the DAF-12-DAF-16 and DAF-12-PMK-1 signaling cascade in nematodes, which provides an important molecular basis for the in vivo toxicity of GO at the miRNA level.
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Affiliation(s)
- Tiantian Guo
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China
| | - Lu Cheng
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China
| | - Huimin Zhao
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China
| | - Yingying Liu
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China
| | - Yunhan Yang
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China
| | - Jie Liu
- Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, VIC 3800, Australia
| | - Qiuli Wu
- Institute of Nephrology, Zhong Da Hospital, Medical School, Southeast University, Nanjing, China.
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12
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Li D, Yuan Y, Wang D. Regulation of response to nanopolystyrene by intestinal microRNA mir-35 in nematode Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 736:139677. [PMID: 32473456 DOI: 10.1016/j.scitotenv.2020.139677] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
In nematode Caenorhabditis elegans, mir-35, a microRNA molecule, was involved in the control of response to nanopolystyrene. Exposure to nanopolystyrene (100 nm) could significantly increase the mir-35 expression. However, the underlying mechanism for this role of mir-35 remains largely unclear. Based on analysis of expression levels, phenotypes, and genetic interactions, we examined the underlying mechanism of intestinal mir-35 in regulating the response to nanopolystyrene. In nematodes, we here found that mir-35 acted in the intestine to regulate the response to nanopolystyrene. In the intestine, NDK-1, homolog of NM23-H1, was identified as the direct target of mir-35, suggesting that intestinal mir-35 regulated the response to nanopolystyrene by suppressing the NDK-1 function. Moreover, intestinal NDK-1 could regulate the response to nanopolystyrene by suppressing the function of FOXO transcriptional factor DAF-16 in the insulin signaling pathway. In nanopolystyrene exposed nematodes, kinase suppressors of Ras (KSR-1 and KSR-2) were further identified as downstream targets of intestinal NDK-1. Moreover, DAF-16 functioned with KSR-1 or KSR-2 in different pathways to regulate the response to nanopolystyrene. Therefore, we have identified an intestinal signaling cascade of mir-35-NDK-1-DAF-16/KSR-1/2 to be required for the control of response to nanopolystyrene. Our results provided an important molecular basis for intestinal response to nanopolystyrene in nematodes.
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Affiliation(s)
- Dan Li
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Yujie Yuan
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China; Shenzhen Ruipuxun Academy for Stem Cell & Regenerative Medicine, Shenzhen 518122, China; Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China.
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13
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Li D, Deng Y, Wang S, Du H, Xiao G, Wang D. Assessment of nanopolystyrene toxicity under fungal infection condition in Caenorhabditis elegans. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 197:110625. [PMID: 32302863 DOI: 10.1016/j.ecoenv.2020.110625] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/15/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Due to the potential of release and accumulation in the environment, nanoplastics have attracted an increasing attention. In this study, we investigated the effect of exposure to nanopolystyrene (30 nm) in nematode Caenorhabditis elegans after the fungal infection. After Candida albicans infection, exposure to nanopolystyrene (10 and 100 μg/L) for 24-h could cause the more severe toxicity on lifespan and locomotion behavior compared with fungal infection alone. The more severe activation of oxidative stress and suppression of SOD-3:GFP expression and mitochondrial unfolded protein response (mt UPR) were associated with this observed toxicity enhancement induced by nanopolystyrene exposure. Moreover, the more severe C. albicans colony formation and suppression of innate immune response as indicated by the alteration in expression of anti-microbial genes (abf-2, cnc-4, cnc-7, and fipr-22/23) further contributed to the formation of this toxicity enhancement induced by nanopolystyrene exposure. Our results demonstrated that short-term exposure to nanopolystyrene in the range of μg/L potentially enhances the adverse effects of fungal infection on organisms.
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Affiliation(s)
- Dan Li
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Yunjia Deng
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - Shuting Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Huihui Du
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - Guosheng Xiao
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China; College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China.
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14
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Li D, Ji J, Yuan Y, Wang D. Toxicity comparison of nanopolystyrene with three metal oxide nanoparticles in nematode Caenorhabditis elegans. CHEMOSPHERE 2020; 245:125625. [PMID: 31855754 DOI: 10.1016/j.chemosphere.2019.125625] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/29/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Using Caenorhabditis elegans as an animal model, we compared the toxicity between nanopolystyrene and three metal oxide nanoparticles (NPs) (Al2O3-NPs, TiO2-NPs, and SiO2-NPs). After exposure from L1-larvae to adult day-1, nanopolystyrene (100 μg/L) reduced brood size and induced severe germline apoptosis, and nanopolystyrene (10-100 μg/L) decreased locomotion behavior, induced obvious reactive oxygen species (ROS) production, and activated noticeable mitochondrial unfolded protein response (mt UPR). Using several endpoints (lethality, development, reproduction, and/or locomotion behavior), we found that nanopolystyrene could induce more severe toxicity than SiO2-NPs, although nanopolystyrene did not cause the toxicity comparable to that in Al2O3-NPs or TiO2-NPs exposed nematodes. Our data will be useful for understanding the exposure risk of nanopolystyrene on environmental organisms. Moreover, the detected toxicity difference between nanopolystyrene and three metal oxide NPs were associated with the differences in both induction of oxidative stress and activation of mt UPR in exposed nematodes.
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Affiliation(s)
- Dan Li
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Jie Ji
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Yujie Yuan
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing, 210009, China.
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15
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Qu M, Wang D. Toxicity comparison between pristine and sulfonate modified nanopolystyrene particles in affecting locomotion behavior, sensory perception, and neuronal development in Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:134817. [PMID: 31715464 DOI: 10.1016/j.scitotenv.2019.134817] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/01/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Sulfonate modified polystyrene is potentially used in medical application; however, the effect of sulfonate modification on polystyrene toxicity is still largely unclear. We here compared the neurotoxicity between pristine and sulfonate modified nanopolystyrene particles in nematode Caenorhabditis elegans. Exposure to nanopolystyrene (35 nm) caused neurotoxicity on locomotion behaviors (head thrash, body bend, forward movement, and backward movement) and sensory perception behaviors (chemotaxis to NaCl or diacetyl). Exposure to nanopolystyrene also induced the damage on development of dopaminergic neurons as reflected by relative fluorescence intensity, number of discontinuous dendrite, and number of abnormal cell body. Moreover, we found that sulfonate modification effectively enhanced the neurontoxicity of nanopolystyrene on locomotion behaviors, sensory perception behaviors, and development of dopaminergic neurons. Our results highlight the possibility of sulfonate modification in increasing neurotoxicity of nanopolystyrene exposure on environmental organisms.
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Affiliation(s)
- Man Qu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China.
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16
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Zhao Y, Li D, Rui Q, Wang D. Toxicity induction of nanopolystyrene under microgravity stress condition in Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135623. [PMID: 31761353 DOI: 10.1016/j.scitotenv.2019.135623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 06/10/2023]
Abstract
Caenorhabditis elegans is a useful animal model for assessing adverse effects of environmental toxicants or stresses. C. elegans was used as an assay system to investigate the effects of exposure to nanopolystyrene (30 nm) on wild-type and sod-3 mutant animals under microgravity stress condition. Using brood size and locomotion behaviors as endpoints, we found that nanopolystyrene exposure enhanced the toxicity of microgravity stress on nematodes, and this toxicity enhancement could be further strengthened by mutation of sod-3 encoding a Mn-SOD protein. Induction of reactive oxygen species (ROS) production and activation of mitochondrial unfolded protein response (mt UPR) were associated with this toxicity enhancement. In sod-3 mutant nematodes, the enhancement in toxicity of microgravity stress by exposure to nanopolystyrene (10 μg/L) was detected. Our data will be helpful for understanding the potential effects of nanopolystyrene exposure on nematodes under the microgravity stress condition.
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Affiliation(s)
- Yingyue Zhao
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Dan Li
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Qi Rui
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China.
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17
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Zhao Y, Chen H, Yang Y, Wu Q, Wang D. Graphene oxide disrupts the protein-protein interaction between Neuroligin/NLG-1 and DLG-1 or MAGI-1 in nematode Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 700:134492. [PMID: 31627046 DOI: 10.1016/j.scitotenv.2019.134492] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/07/2019] [Accepted: 09/15/2019] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO) is a carbon-based engineered nanomaterial (ENM). Using Caenorhabditis elegans as an animal model, we investigated the effect of GO exposure on protein-protein interactions. In nematodes, NLG-1/Neuroligin, a postsynaptic protein, acted only in the neurons to regulate the GO toxicity. In the neurons, DLG-1, a PSD-95 protein, and MAGI-1, a S-SCAM protein, were identified as the downstream targets of NLG-1 in the regulation of GO toxicity. PKC-1, a serine/threonine protein kinase C, further acted downstream of neuronal DLG-1 and MAGI-1 to regulate the GO toxicity. Co-immunoprecipitation analysis demonstrated the protein-protein interaction between NLG-1 and DLG-1 or MAGI-1. After GO expression, this protein-protein interaction between NLG-1 and DLG-1 or MAGI-1 was significantly inhibited. Therefore, our data raised the evidence to suggest the potential of GO exposure in disrupting protein-protein interactions in organisms.
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Affiliation(s)
- Yunli Zhao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China; Department of Preventive Medicine, Bengbu Medical College, Bengbu 233030, China
| | - He Chen
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Yunhan Yang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Qiuli Wu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China.
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18
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Yang Y, Shao H, Wu Q, Wang D. Lipid metabolic response to polystyrene particles in nematode Caenorhabditis elegans. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113439. [PMID: 31672355 DOI: 10.1016/j.envpol.2019.113439] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/05/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Nanoplastics can be used in various fields, such as personal care products. Nevertheless, the effect of nanoplastic exposure on metabolism and its association with stress response remain largely unclear. Using Caenorhabditis elegans as an animal model, we determined the effect of nanopolystyrene exposure on lipid metabolism and its association with the response to nanopolystyrene. Exposure (from L1-larave to adult day-3) to 100 nm nanopolystyrene (≥1 μg/L) induced severe lipid accumulation and increase in expressions of mdt-15 and sbp-1 encoding two lipid metabolic sensors. Meanwhile, we found that SBP-1 acted downstream of intestinal MDT-15 during the control of response to nanopolystyrene. Intestinal transcriptional factor SBP-1 activated two downstream targets, fatty acyl CoA desaturase FAT-6 and heat-shock protein HSP-4 (a marker of endoplasmic reticulum unfolded protein response (ER UPR)) to regulate nanopolystyrene toxicity. Both MDT-15 and SBP-1 were involved in the activation of ER-UPR in nanopolystyrene exposed nematodes. Moreover, SBP-1 regulated the innate immune response by activating FAT-6 in nanopolystyrene exposed nematodes. In the intestine, function of MDT-15 and SBP-1 in regulating nanopolystyrene toxicity was under the control of upstream signaling cascade (PMK-1-SKN-1) in p38 MAPK signaling pathway. Therefore, our data raised an important molecular basis for potential protective function of lipid metabolic response in nanopolystyrene exposed nematodes.
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Affiliation(s)
- Yunhan Yang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Huimin Shao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Qiuli Wu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School, Southeast University, Nanjing 210009, China.
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19
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Zhao Y, Dong S, Kong Y, Rui Q, Wang D. Molecular basis of intestinal canonical Wnt/β-catenin BAR-1 in response to simulated microgravity in Caenorhabditis elegans. Biochem Biophys Res Commun 2020; 522:198-204. [DOI: 10.1016/j.bbrc.2019.11.082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 11/14/2019] [Indexed: 12/29/2022]
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20
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Liu P, Li D, Li W, Wang D. Mitochondrial Unfolded Protein Response to Microgravity Stress in Nematode Caenorhabditis elegans. Sci Rep 2019; 9:16474. [PMID: 31712608 PMCID: PMC6848112 DOI: 10.1038/s41598-019-53004-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/24/2019] [Indexed: 11/29/2022] Open
Abstract
Caenorhabditis elegans is useful for assessing biological effects of spaceflight and simulated microgravity. The molecular response of organisms to simulated microgravity is still largely unclear. Mitochondrial unfolded protein response (mt UPR) mediates a protective response against toxicity from environmental exposure in nematodes. Using HSP-6 and HSP-60 as markers of mt UPR, we observed a significant activation of mt UPR in simulated microgravity exposed nematodes. The increase in HSP-6 and HSP-60 expression mediated a protective response against toxicity of simulated microgravity. In simulated microgravity treated nematodes, mitochondria-localized ATP-binding cassette protein HAF-1 and homeodomain-containing transcriptional factor DVE-1 regulated the mt UPR activation. In the intestine, a signaling cascade of HAF-1/DVE-1-HSP-6/60 was required for control of toxicity of simulated microgravity. Therefore, our data suggested the important role of mt UPR activation against the toxicity of simulated microgravity in organisms.
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Affiliation(s)
- Peidang Liu
- Medical School, Southeast University, Nanjing, 210009, China
| | - Dan Li
- Medical School, Southeast University, Nanjing, 210009, China
| | - Wenjie Li
- Medical School, Southeast University, Nanjing, 210009, China
| | - Dayong Wang
- Medical School, Southeast University, Nanjing, 210009, China.
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