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Li MR, Men SH, Wang ZY, Liu C, Zhou GR, Yan ZG. The application of human-derived cell lines in neurotoxicity studies of environmental pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168839. [PMID: 38036138 DOI: 10.1016/j.scitotenv.2023.168839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Abstract
As industrial and societal advancements progress, an increasing number of environmental pollutants linked to human existence have been substantiated to elicit neurotoxicity and developmental neural toxicity. For research in this field, human-derived neural cell lines have become excellent in vitro models. This study examines the utilization of immortalized cell lines, specifically the SH-SY5Y human neuroblastoma cell line, and neural cells derived from human pluripotent stem cells, in the investigation of neurotoxicity and developmental neural toxicity caused by environmental pollutants. The study also explores the culturing techniques employed for these cell lines and provides an overview of the standardized assays used to assess various biological endpoints. The environmental pollutants involved include a variety of organic compounds, heavy metals, and microplastics. The utilization of cell lines derived from human sources holds significant significance in elucidating the neurotoxic effects of environmental pollutants and the underlying mechanisms. Finally, we propose the possibility of improving the in vitro model of the human nervous system and the toxicity detection methods.
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Affiliation(s)
- Ming-Rui Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Shu-Hui Men
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zi-Ye Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Chen Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guo-Rui Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zhen-Guang Yan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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Musuroglu Keloglan S, Sahin L, Kocahan S, Annac E, Tirasci N, Pekmezekmek AB. Effect of caffeine on hippocampal memory and levels of gene expression in social isolation stress. Int J Dev Neurosci 2023; 83:641-652. [PMID: 37575074 DOI: 10.1002/jdn.10292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/06/2023] [Accepted: 07/21/2023] [Indexed: 08/15/2023] Open
Abstract
BACKGROUND Caffeine (Cf) antagonizes the adenosine receptors and has neuroprotective properties. The effect of Cf has been seen on stress-induced deficits of cognitive. In this study, we have investigated the effect of Cf on learning and memory functions induced by social isolation (SI) stress. MATERIALS AND METHODS In the present study, 21-day-old Wistar albino male rats (n = 28) were divided into four groups: the control (C), the SI, the Cf, and the social isolation + caffeine (SICf). Cf (0.3 g/L) was added to the drinking water of the experimental animals for 4 weeks. The learning and memory functions were assessed using the Morris Water Maze Test (MWMT). Following, was performed histopathological evaluation and determined hippocampal gene expression levels by RT-qPCR. RESULTS According to MWMT findings, the time spent in the quadrant where the platform removed was decreased in the SI group compared with the C (p < 0.05). Histological evaluation showed morphological changes in SI by irregular appearance, cellular edema, and dark pycnotic appearance of nuclei in some neurons. However, it was observed that the histological structure of most of the neurons in the SICf group was similar to the C and Cf groups. Hippocampal SNAP25 expression was decreased in the Cf and SICf groups than in the C group (p < 0.05). The GFAP expression was increased in the SICf group than in the C group (p < 0.05). NR2A increased in the SI and SICf groups compared with C and Cf groups (p < 0.05). NR2B expression decreased in the Cf group compared with C and SI groups (p < 0.05). CONCLUSIONS SI impaired spatial memory and causes morphological changes in adolescent rats, but this effect of isolation was not seen in Cf-treated animals. The effects of SI on NR2A, Cf on NR2B, and SNAP25 are remarkable. Here, we propose that the impaired effect of SI on spatial memory may be mediated by NR2A, but further studies are needed to explain this effect.
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Affiliation(s)
| | - Leyla Sahin
- Department of Physiology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Sayad Kocahan
- Department of Physiology, Faculty of Gulhane Medicine, Health Sciences University, Ankara, Turkey
| | - Ebru Annac
- Department of Histology and Embryology, Faculty of Medicine, Adiyaman University, Adiyaman, Turkey
| | - Nurhan Tirasci
- Department of Zootechnics and Animal Nutrition, Institute of Health Sciences, Fırat University, Elazig, Turkey
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Kim YK, Eom Y, Yoon H, Lee Y, Lee SH. Benzo[a]pyrene represses synaptic vesicle exocytosis by inhibiting P/Q-type calcium channels in hippocampal neurons. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115301. [PMID: 37506439 DOI: 10.1016/j.ecoenv.2023.115301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023]
Abstract
Humans are exposed to the common carcinogen benzo[a]pyrene (BaP) by ingesting contaminated foods and water or inhaling polluted air. Given the enriched lipids and reduced antioxidative properties in the brain and the accumulation of BaP in the brain due to its high lipophilicity, the brain is susceptible to BaP-induced toxicity. Exposure to BaP leads to impairments in learning and memory, increased anxiety behavior, and neuronal death. It induces protein dysfunctions in neuronal compartments that play essential roles in neuronal activity or physiology. However, the neurotoxicity of BaP on presynaptic terminals, which is crucial to neurotransmission by releasing synaptic vesicles that contain neurotransmitters, has not yet been investigated. In the present study, we investigated the toxicity of BaP at presynaptic terminals in living hippocampal neurons. These neurons were sourced from transgenic mice pups (postnatal 1-day, a total of 12 pups, equal numbers for each sex) that endogenously express synaptic vesicle-fused pHluorin, which is a green fluorescent protein that enables monitoring of synaptic vesicle dynamics. We observed that BaP suppressed synaptic vesicle exocytosis by inhibiting presynaptic Ca2+ entry via P/Q-type Ca2+ channels. Together with molecular docking simulation, we speculate that BaP and metabolites may bind to the P/Q Ca2+ channels. These results suggest the toxic mechanism of BaP exposure-induced abnormal behavior that provides a basis to evaluate the risk assessment of BaP-induced neurotoxicity.
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Affiliation(s)
- Yeong-Kyeong Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yunkyung Eom
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hongryul Yoon
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yoonji Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea.
| | - Sung Hoon Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea.
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Zhang YX, Wei QY, Wang YT, Zeng LP, Sun SY, Wu YF, Ren CY, Wang F, Chen GH, Cao L. A postpartum enriched environment rescues impaired cognition and oxidative markers in aged mice with gestational inflammation. Brain Behav 2022; 12:e2817. [PMID: 36409568 PMCID: PMC9759132 DOI: 10.1002/brb3.2817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 10/16/2022] [Accepted: 10/22/2022] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION Previous studies have shown that gestational inflammation can accelerate age-associated cognitive decline (AACD) in maternal mice; enriched environments (EEs) have been reported to protect normally aging mice from AACD and improve mitochondrial function. However, it is unclear whether the nitrosative stress-related proteins tet methylcytosine dioxygenase 1 (TET1) and S-nitrosoglutathione reductase (GSNOR) are involved in the accelerated aging process of gestational inflammation and whether EEs can slow this process. METHODS In this study, CD-1 female mice on the 15th day of pregnancy were injected with bacterial lipopolysaccharide (50 μg/kg; LPS group) or an equivalent amount of normal saline (CON group) from the abdominal cavity for 4 consecutive days. Twenty-one days after delivery, half of the LPS-treated mice were randomly selected for EE until the end of the behavioral experiment (LPS-E group). When the female rats were raised to 6 months and 18 months of age, the Morris water maze (MWM) was used to detect spatial learning and memory ability; RT-PCR and Western blots were used to measure the mRNA and protein levels of hippocampal TET1 and GSNOR. RESULTS As for the control group, compared with 6-month-old mice, the spatial learning and memory ability of 18-month-old mice decreased, and the hippocampal TET1 and GSNOR mRNA and protein levels were decreased. Gestational inflammation exacerbated these age-related changes, but an EE alleviated the effects. Pearson's correlation analysis indicated that performance during the learning and memory periods in the MWM correlated with the levels of hippocampal TET1 and GSNOR. CONCLUSIONS Our findings suggest that gestational inflammation accelerates age-related learning and memory impairments and that postpartum EE exposure could alleviate these changes. These effects may be related to hippocampal TET1 and GSNOR expression.
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Affiliation(s)
- Yu-Xin Zhang
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China.,Department of Neurology, Bengbu Second People's Hospital, Bengbu, Anhui Province, P. R. China
| | - Qi-Yao Wei
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
| | - Ya-Tao Wang
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Li-Ping Zeng
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Shi-Yu Sun
- Department of Neurology, The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, Anhui Province, P. R. China
| | - Yong-Fang Wu
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Chong-Yang Ren
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Fang Wang
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
| | - Gui-Hai Chen
- Department of Neurology (Sleep Disorders), the Affiliated Chaohu Hospital of Anhui Medical University, Hefei (Chaohu), Anhui, P. R. China
| | - Lei Cao
- Department of Neurology, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, P. R. China
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Kuang H, Zhou W, Zeng Y, Xu D, Zhu W, Lin S, Fan R. Dose makes poison: Insights into the neurotoxicity of perinatal and juvenile exposure to environmental doses of 16 priority-controlled PAHs. CHEMOSPHERE 2022; 298:134201. [PMID: 35257710 DOI: 10.1016/j.chemosphere.2022.134201] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/18/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Whether chronic exposure to environmental doses of polycyclic aromatic hydrocarbons (PAHs) can lead to neurotoxic effects is still unclear. Hence, the neurotoxic effects of perinatal and juvenile exposure to 16 priority-controlled PAHs were investigated. The mice were treated with 0, 0.5, 18.75, 50, 1875 μg/kg/day of PAHs corresponding to various population exposure concentrations from gestation to postnatal day 60. Urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) and hippocampal and cortical neurotransmitter levels were determined using liquid chromatography-tandem mass spectrometry. Typical indicators or outcome of neurotoxicity, including, spatial learning and memory ability, hippocampal long-term potentiation (LTP) and dendritic spine density were evaluated via Morris water maze tests, electrophysiological experiments and Golgi-Cox assays, respectively. The results showed that exposure to different levels of PAH could not increase oxidative DNA damage level. Mice exposed to 0.5, 50 and 1875 μg/kg/day PAHs had significantly longer escape latency than the control group only on the 1st day (p < 0.05). The number of platform crossings and the time spent in target quadrant were similar between the control and the PAHs-exposed mice. Compared with the control mice, only those exposed to 50 μg/kg/day PAHs had significantly lower LTP in hippocampal CA1 region and dendritic spine density in hippocampal DG region (p < 0.05). Except for serotonin, no significant difference in hippocampal and cortical neurotransmitter concentrations was observed between the control and PAHs-exposed groups. Taken together, perinatal and juvenile exposure to environmental doses of PAHs had no profound effect on spatial learning and memory abilities, hippocampal LTP, dendritic spines density, and neurotransmitter levels. These unexpected findings were quite different from previous in vivo studies which commonly used 2-3 orders of magnitude higher PAHs doses to treat animals. Thus, the environmental dose is a crucial reference for future toxicological research to reveal the actual toxic mechanisms and human health effects of PAHs exposure.
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Affiliation(s)
- Hongxuan Kuang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China; State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, Ministry of Ecology and Environment, South China Institute of Environmental Sciences, Guangzhou, 510655, China
| | - Wenji Zhou
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Yingwei Zeng
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Da Xu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Wanqi Zhu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Shengjie Lin
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Ruifang Fan
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring and Guangdong Provincial Engineering Technology Research Center for Drug and Food Biological Resources Processing and Comprehensive Utilization, School of Life Sciences, South China Normal University, Guangzhou, 510631, China.
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Saravanakumar K, Sivasantosh S, Sathiyaseelan A, Sankaranarayanan A, Naveen KV, Zhang X, Jamla M, Vijayasarathy S, Vishnu Priya V, MubarakAli D, Wang MH. Impact of benzo[a]pyrene with other pollutants induce the molecular alternation in the biological system: Existence, detection, and remediation methods. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 304:119207. [PMID: 35351595 DOI: 10.1016/j.envpol.2022.119207] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
The exposure of benzo [a]pyrene (BaP) in recent times is rather unavoidable than ever before. BaP emissions are sourced majorly from anthropogenic rather than natural provenance from wildfires and volcanic eruptions. A major under-looked source is via the consumption of foods that are deep-fried, grilled, and charcoal smoked foods (meats in particular). BaP being a component of poly aromatic hydrocarbons has been classified as a Group I carcinogenic agent, which has been shown to cause both systemic and localized effects in animal models as well as in humans; has been known to cause various forms of cancer, accelerate neurological disorders, invoke DNA and cellular damage due to the generation of reactive oxygen species and involve in multi-generational phenotypic and genotypic defects. BaP's short and accumulated exposure has been shown in disrupting the fertility of gamete cells. In this review, we have discussed an in-depth and capacious run-through of the various origins of BaP, its economic distribution and its impact as well as toxicological effects on the environment and human health. It also deals with a mechanism as a single compound and its ability to synergize with other chemicals/materials, novel sensitive detection methods, and remediation approaches held in the environment.
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Affiliation(s)
- Kandasamy Saravanakumar
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 200-701, Republic of Korea.
| | | | - Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 200-701, Republic of Korea.
| | - Alwarappan Sankaranarayanan
- Department of Life Sciences, Sri Sathya Sai University for Human Excellence, Navanihal, Karnataka, 585 313, India.
| | - Kumar Vishven Naveen
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 200-701, Republic of Korea.
| | - Xin Zhang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 200-701, Republic of Korea.
| | - Monica Jamla
- Department of Biotechnology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune, 411007, India.
| | - Sampathkumar Vijayasarathy
- Department of Biotechnology, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
| | - Veeraraghavan Vishnu Priya
- Department of Biochemistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, India.
| | - Davoodbasha MubarakAli
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu, 600048, India.
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon, 200-701, Republic of Korea.
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Seralini GE, Jungers G. Endocrine disruptors also function as nervous disruptors and can be renamed endocrine and nervous disruptors (ENDs). Toxicol Rep 2021; 8:1538-1557. [PMID: 34430217 PMCID: PMC8365328 DOI: 10.1016/j.toxrep.2021.07.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/22/2021] [Accepted: 07/29/2021] [Indexed: 01/14/2023] Open
Abstract
Endocrine disruption (ED) and endocrine disruptors (EDs) emerged as scientific concepts in 1995, after numerous chemical pollutants were found to be responsible for reproductive dysfunction. The World Health Organization established in the United Nations Environment Programme a list of materials, plasticizers, pesticides, and various pollutants synthesized from petrochemistry that impact not only reproduction, but also hormonal functions, directly or indirectly. Cells communicate via either chemical or electrical signals transmitted within the endocrine or nervous systems. To investigate whether hormone disruptors may also interfere directly or indirectly with the development or functioning of the nervous system through either a neuroendocrine or a more general mechanism, we examined the scientific literature to ascertain the effects of EDs on the nervous system, specifically in the categories of neurotoxicity, cognition, and behaviour. To date, we demonstrated that all of the 177 EDs identified internationally by WHO are known to have an impact on the nervous system. Furthermore, the precise mechanisms underlying this neurodisruption have also been established. It was previously believed that EDs primarily function via the thyroid. However, this study presents substantial evidence that approximately 80 % of EDs operate via other mechanisms. It thus outlines a novel concept: EDs are also neurodisruptors (NDs) and can be collectively termed endocrine and nervous disruptors (ENDs). Most of ENDs are derived from petroleum residues, and their various mechanisms of action are similar to those of "spam" in electronic communications technologies. Therefore, ENDs can be considered as an instance of spam in a biological context.
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Affiliation(s)
- Gilles-Eric Seralini
- University of Caen Normandy, Network on Risks, Quality and Sustainable Development, Faculty of Sciences, Esplanade de la Paix, 14032, Caen, France
| | - Gerald Jungers
- University of Caen Normandy, Network on Risks, Quality and Sustainable Development, Faculty of Sciences, Esplanade de la Paix, 14032, Caen, France
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Yang K, Jiang X, Cheng S, Bai L, Xia Y, Chen C, Meng P, Wang J, Li C, Tang Q, Cao X, Tu B. Synaptic dopamine release is positively regulated by SNAP-25 that involves in benzo[a]pyrene-induced neurotoxicity. CHEMOSPHERE 2019; 237:124378. [PMID: 31376700 DOI: 10.1016/j.chemosphere.2019.124378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/13/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
Benzo[a]pyrene (B[a]P) is a ubiquitous neurotoxic pollutant that widely distributes in the natural environment. However, the exact mechanism of B[a]P-induced neurotoxicity has not been well established. As one key synaptic protein, SNAP-25 plays an important role in the regulation of neurotransmitter release, including synaptic dopamine release. In this study, we demonstrated that, after intragastric administration of B[a]P in rats aged postnatal day 5 for 7 weeks, B[a]P significantly increased the level of dopamine and the expression of SNAP-25, dopamine receptor 1 (DRD1) and DRD 3. Moreover, treatment of B[a]P also caused the ultra-structural pathological changes in the cerebral cortex of rats. To further reveal the potential role of SNAP-25 in the regulation of DRDs, we treated the dopaminergic PC-12 cells with 20 μM B[a]P for 24 h. A significant cytotoxicity and apoptosis were observed, and more importantly, we found that SNAP-25, DRD 1 and DRD 3 co-localized in the cells, and down-regulation of SNAP-25 by CRISPR-Cas9 plasmid remarkably reduced the expression of DRD1 and DRD3. Together, our findings suggest that, synaptic dopamine release may be positively regulated by SNAP-25 via its receptors, and thus affecting the neurotoxicity induced by B[a]P.
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Affiliation(s)
- Kai Yang
- Emergency and Business Management Office, Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, People's Republic of China; Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, People's Republic of China; Laboratory of Tissue and Cell Biology, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, People's Republic of China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - LuLu Bai
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yinyin Xia
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Pan Meng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jing Wang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Chunlin Li
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qianghu Tang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xianqing Cao
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Baijie Tu
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China.
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Bai L, Tang Q, Zou Z, Meng P, Tu B, Xia Y, Cheng S, Zhang L, Yang K, Mu S, Wang X, Qin X, Lv B, Cao X, Qin Q, Jiang X, Chen C. m6A Demethylase FTO Regulates Dopaminergic Neurotransmission Deficits Caused by Arsenite. Toxicol Sci 2019; 165:431-446. [PMID: 29982692 DOI: 10.1093/toxsci/kfy172] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Arsenite exposure is known to increase the risk of neurological disorders via alteration of dopamine content, but the detailed molecular mechanisms remain largely unknown. In this study, using both dopaminergic neurons of the PC-12 cell line and C57BL/6J mice as in vitro and in vivo models, our results demonstrated that 6 months of arsenite exposure via drinking water caused significant learning and memory impairment, anxiety-like behavior and alterations in conditioned avoidance and escape responses in male adult mice. We also were the first to reveal that the reduction in dopamine content induced by arsenite mainly resulted from deficits in dopaminergic neurotransmission in the synaptic cleft. The reversible N6- methyladenosine (m6A) modification is a novel epigenetic marker with broad roles in fundamental biological processes. We further evaluated the effect of arsenite on the m6A modification and tested if regulation of the m6A modification by demethylase fat mass and obesity-associated (FTO) could affect dopaminergic neurotransmission. Our data demonstrated for the first time that arsenite remarkably increased m6A modification, and FTO possessed the ability to alleviate the deficits in dopaminergic neurotransmission in response to arsenite exposure. Our findings not only provide valuable insight into the molecular neurotoxic pathogenesis of arsenite exposure, but are also the first evidence that regulation of FTO may be considered as a novel strategy for the prevention of arsenite-associated neurological disorders.
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Affiliation(s)
- LuLu Bai
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qianghu Tang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, People's Republic of China
| | - Pan Meng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Baijie Tu
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yinyin Xia
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Lina Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Kai Yang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Shaoyu Mu
- Post-doctoral Research Stations of Nursing Science, School of Nursing, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xuefeng Wang
- Chongqing Key Laboratory of Neurology, Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Bo Lv
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Xianqing Cao
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China
| | - Qizhong Qin
- Center of Experimental Teaching for Public Health
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health.,Laboratory of Tissue and Cell Biology, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, People's Republic of China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, People's Republic of China.,Post-doctoral Research Stations of Nursing Science, School of Nursing, Chongqing Medical University, Chongqing, People's Republic of China
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Xin H, Cui Y, An Z, Yang Q, Zou X, Yu N. Attenuated glutamate induced ROS production by antioxidative compounds in neural cell lines. RSC Adv 2019; 9:34735-34743. [PMID: 35530670 PMCID: PMC9074000 DOI: 10.1039/c9ra03848e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 10/21/2019] [Indexed: 12/21/2022] Open
Abstract
Glutamate is an excitatory neurotransmitter involved in neural function. Excess accumulation of intercellular glutamate leads to increasing concentration of reactive oxygen species (ROS) and reactive nitrogen species (RNS) in neuronal cells. In this study, we investigated the antioxidant activity of several typical superior compounds among four neuronal cells, and determined the scavenging activity of free radicals. The in vivo assay was also carried out to compare the protective effect of glutamate-induced cell damage. Hierarchical clustering analysis was used to identify the common properties. Glutamate induced neurotoxicity and ROS production, suggesting glutamate cytotoxicity was related to oxidative stress and widely exists in different cell lines. Those screening compounds exhibited strong antioxidant ability, but low cytotoxicity to neuronal cells, acting as agents against neurodegenerative diseases. Finally, a hierarchical clustering analysis assay indicated that hyperoside and rutin hydrate are the most effective compounds for attenuating intercellular ROS levels. The results suggested the activity more or less relies on structure, rather than residues. These data generate new supporting ideas to remove intracellular ROS and the identified compounds serve as potential therapeutic agents in multiple neurological diseases. Glutamate is an excitatory neurotransmitter involved in neural function.![]()
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Affiliation(s)
- Haolin Xin
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases
- Department of Neurology
- Nankai University
- Huanhu Hospital
- Tianjin
| | - Ying Cui
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Zhongping An
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases
- Department of Neurology
- Nankai University
- Huanhu Hospital
- Tianjin
| | - Qian Yang
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases
- Department of Neurology
- Nankai University
- Huanhu Hospital
- Tianjin
| | - Xuan Zou
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases
- Department of Neurology
- Nankai University
- Huanhu Hospital
- Tianjin
| | - Ning Yu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases
- Department of Neurology
- Nankai University
- Huanhu Hospital
- Tianjin
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