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Wu Q, Liu SP, Liu C, Chen X, Zhou H, Zhao H. Disulfidoptosis as a Novel Mechanism of Neuronal Death: Insights from Creutzfeldt-Jakob Disease. World Neurosurg 2024:S1878-8750(24)01439-6. [PMID: 39159675 DOI: 10.1016/j.wneu.2024.08.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Accepted: 08/13/2024] [Indexed: 08/21/2024]
Abstract
BACKGROUND Sporadic Creutzfeldt-Jakob Disease (SCJD) is a severe neurodegenerative disorder characterized by rapid progression and extensive neuronal loss. Disulfidptosis is an innovative type of programmed cell demise characterized by an accumulation of disulfide bonds within the cellular cytoplasm, subsequently triggering functional disruption and cell demise. METHODS Through literature review and analysis, we identified 18 candidate disulfidptosis-related genes (DRGs) involved in cellular processes. The dataset used for analysis, GSE124571, was obtained from the Gene Expression Omnibus database. Gene-gene and protein-protein interactions were analyzed using the GeneMANIA and STRING databases, respectively. We also performed enrichment analysis, differential expressed genes analysis, weighted gene correlation network analysis analysis, immune infiltration, consensus clustering, and matrix correlation. RESULTS The analysis showed that 12 out of 18 DRGs were significantly changed between SCJD and control groups. The DRGs had strong interactions such as physical interactions, co-expression and genetic interactions, and were enriched in biological processes and pathways related to actin cytoskeletal regulation. The study most notably identified 3 hub genes (WASF2, TLN1 and G6PD) important for SCJD and emphasized the functional significance of the identified hub genes. The role of the immune system in the pathogenesis of SCJD. The study found that the composition of immune cells in SCJD brain tissue is altered. Consensus clustering provided insights into immune infiltration and hub gene expression in SCJD subgroup. CONCLUSIONS Our study reveals the possible involvement of disulfidptosis in SCJD and highlights the significance of identified hub genes as potential biomarkers and therapeutic targets for SCJD.
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Affiliation(s)
- Qike Wu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Joint Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Shan-Peng Liu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Joint Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Cuiying Liu
- School of Nursing, Capital Medical University, Beijing, China
| | - Xiaoyuan Chen
- Department of Diagnostic Radiology, Nanomedicine Translational Research Program, NUS Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hongmei Zhou
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Heng Zhao
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Joint Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.
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Zhang C, Shi G, Meng Q, Hu R, Li Y, Hu G, Wang K, Huang M. An approach based on a combination of toxicological experiments and in silico predictions to investigate the adverse outcome pathway (AOP) of paraquat neuro-immunotoxicity. JOURNAL OF HAZARDOUS MATERIALS 2024; 473:134607. [PMID: 38761765 DOI: 10.1016/j.jhazmat.2024.134607] [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: 02/29/2024] [Revised: 04/30/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
Paraquat (PQ) exposure is strongly associated with neurotoxicity. However, research on the neurotoxicity mechanisms of PQ varies in terms of endpoints of toxic assessment, resulting in a great challenge to understand the early neurotoxic effects of PQ. In this study, we developed an adverse outcome pathway (AOP) to investigate PQ-induced neuro-immunotoxicity from an immunological perspective, combining of traditional toxicology methods and computer simulations. In vivo, PQ can microstructurally lead to an early synaptic loss in the brain mice, which is a large degree regarded as a main reason for cognitive impairment to mice behavior. Both in vitro and in vivo demonstrated synapse loss is caused by excessive activation of the complement C1q/C3-CD11b pathway, which mediates microglial phagocytosis dysfunction. Additionally, the interaction between PQ and C1q was validated by molecular simulation docking. Our findings extend the AOP framework related to PQ neurotoxicity from a neuro-immunotoxic perspective, highlighting C1q activation as the initiating event for PQ-induced neuro-immunotoxicity. In addition, downstream complement cascades induce abnormal microglial phagocytosis, resulting in reduced synaptic density and subsequent non-motor dysfunction. These findings deepen our understanding of neurotoxicity and provide a theoretical basis for ecological risk assessment of PQ.
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Affiliation(s)
- Chunhui Zhang
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Ge Shi
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Qi Meng
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Rong Hu
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Yang Li
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Guiling Hu
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China
| | - Kaidong Wang
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China.
| | - Min Huang
- School of Public Health, Ningxia Medical University, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, the Street of Shengli, Xingqing District, Yinchuan, Ningxia, China.
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Shi G, Zhang C, Bai X, Sun J, Wang K, Meng Q, Li Y, Hu G, Hu R, Cai Q, Huang M. A potential mechanism clue to the periodic storm from microglia activation and progressive neuron damage induced by paraquat exposure. ENVIRONMENTAL TOXICOLOGY 2024; 39:1874-1888. [PMID: 38189626 DOI: 10.1002/tox.24053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/24/2023] [Accepted: 11/10/2023] [Indexed: 01/09/2024]
Abstract
Paraquat (PQ), is characterized by neurotoxicity, which increases the potential risk of Parkinson's disease (PD) exposure in the long-term and low doses. Triggering microglia activation and neuroinflammation is deemed an early event resulting in PD. However, the underlying pathogenesis of PD by PQ is not clear yet. In this article, C57BL/6J mice treated with PQ could successfully act out Parkinson-like. In addition, we observed the fluorescence intensity enhancement of Iba-1 activated microglia with released pro-inflammatory, all ahead of both the damage of dopaminergic neurons in the substantia nigra and corpus striatum of the brain. Surprisingly, the injection of minocycline before PQ for many hours not only can effectively improve the neurobehavioral symptoms of mice but inhibit the activation of microglia and the release of pro-inflammatory substances, even controlling the gradual damage and loss of neurons. A further mechanism of minocycline hampered the expression levels of key signaling proteins PI3K, PDK1, p-AKT, and CD11b (the receptor of microglia membrane recognition), while a large number of inflammatory factors. Our results suggested that the CD11b/PI3K/NOX2 pathway may be a clue that microglia-mediated inflammatory responses and neuronal damage in a PQ-induced abnormal behavior Parkinson-like mouse.
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Affiliation(s)
- Ge Shi
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Chunhui Zhang
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Xinghua Bai
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Jian Sun
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - KaiDong Wang
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Qi Meng
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Yang Li
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Guiling Hu
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Rong Hu
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Qian Cai
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Min Huang
- School of Public Health, Ningxia Medical University, Yinchuan, Ningxia, China
- Key Laboratory of Environmental Factors and Chronic Disease Control, School of Public Health of Ningxia Medical University, Yinchuan, Ningxia, China
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Sharma P, Mittal P. Paraquat (herbicide) as a cause of Parkinson's Disease. Parkinsonism Relat Disord 2024; 119:105932. [PMID: 38008593 DOI: 10.1016/j.parkreldis.2023.105932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 11/04/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023]
Abstract
The four features of Parkinson's disease (PD), which also manifests other non-motor symptoms, are bradykinesia, tremor, postural instability, and stiffness. The pathogenic causes of Parkinsonism include Lewy bodies, intracellular protein clumps of αsynuclein, and the degeneration of dopaminergic neurons in the substantia nigra's pars compacta region. The pathophysiology of PD is still poorly understood due to the complexity of the illness. The apoptotic cell death of neurons in PD, however, has been linked to a variety of intracellular mechanisms, according to a wide spectrum of study. The endoplasmic reticulum's stress, decreased levels of neurotrophic factors, oxidative stress, mitochondrial dysfunction, catabolic alterations in dopamine, and decreased activity of tyrosine hydroxylase are some of these causes. The herbicide paraquat has been used in laboratory studies to create a variety of PD pathological features in numerous in-vitro and in-vivo animals. Due to the unique neurotoxicity that paraquat causes, understanding of the pathophysiology of PD has changed. Parkinson's disease (PD) is more likely to develop among people exposed to paraquat over an extended period of time, according to epidemiological studies. Thanks to this paradigm, the hunt for new therapy targets for PD has expanded. In both in-vitro and in-vivo models, the purpose of this study is to summarise the relationship between paraquat exposure and the onset of Parkinson's disease (PD).
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Affiliation(s)
| | - Payal Mittal
- University Institute of Pharma Sciences, Mohali, Punjab, India.
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Chaudhary R, Singh R. Therapeutic Viewpoint on Rat Models of Locomotion Abnormalities and Neurobiological Indicators in Parkinson's Disease. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2024; 23:488-503. [PMID: 37202886 DOI: 10.2174/1871527322666230518111323] [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: 06/15/2022] [Revised: 11/11/2022] [Accepted: 12/02/2022] [Indexed: 05/20/2023]
Abstract
BACKGROUND Locomotion problems in Parkinson's syndrome are still a research and treatment difficulty. With the recent introduction of brain stimulation or neuromodulation equipment that is sufficient to monitor activity in the brain using electrodes placed on the scalp, new locomotion investigations in patients having the capacity to move freely have sprung up. OBJECTIVE This study aimed to find rat models and locomotion-connected neuronal indicators and use them all over a closed-loop system to enhance the future and present treatment options available for Parkinson's disease. METHODS Various publications on locomotor abnormalities, Parkinson's disease, animal models, and other topics have been searched using several search engines, such as Google Scholar, Web of Science, Research Gate, and PubMed. RESULTS Based on the literature, we can conclude that animal models are used for further investigating the locomotion connectivity deficiencies of many biological measuring devices and attempting to address unanswered concerns from clinical and non-clinical research. However, translational validity is required for rat models to contribute to the improvement of upcoming neurostimulation-based medicines. This review discusses the most successful methods for modelling Parkinson's locomotion in rats. CONCLUSION This review article has examined how scientific clinical experiments lead to localised central nervous system injuries in rats, as well as how the associated motor deficits and connection oscillations reflect this. This evolutionary process of therapeutic interventions may help to improve locomotion- based treatment and management of Parkinson's syndrome in the upcoming years.
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Affiliation(s)
- Rishabh Chaudhary
- Department of Pharmacology, Central University of Punjab, Bathinda 151401, India
- Department of Pharmacology, M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana 133207, India
| | - Randhir Singh
- Department of Pharmacology, Central University of Punjab, Bathinda 151401, India
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Hayley S, Vahid-Ansari F, Sun H, Albert PR. Mood disturbances in Parkinson's disease: From prodromal origins to application of animal models. Neurobiol Dis 2023; 181:106115. [PMID: 37037299 DOI: 10.1016/j.nbd.2023.106115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 03/09/2023] [Accepted: 04/05/2023] [Indexed: 04/12/2023] Open
Abstract
Parkinson's disease (PD) is a complex illness with a constellation of environmental insults and genetic vulnerabilities being implicated. Strikingly, many studies only focus on the cardinal motor symptoms of the disease and fail to appreciate the major non-motor features which typically occur early in the disease process and are debilitating. Common comorbid psychiatric features, notably clinical depression, as well as anxiety and sleep disorders are thought to emerge before the onset of prominent motor deficits. In this review, we will delve into the prodromal stage of PD and how early neuropsychiatric pathology might unfold, followed by later motor disturbances. It is also of interest to discuss how animal models of PD capture the complexity of the illness, including depressive-like characteristics along with motor impairment. It remains to be determined how the underlying PD disease processes contributes to such comorbidity. But some of the environmental toxicants and microbial pathogens implicated in PD might instigate pro-inflammatory effects favoring α-synuclein accumulation and damage to brainstem neurons fueling the evolution of mood disturbances. We posit that comprehensive animal-based research approaches are needed to capture the complexity and time-dependent nature of the primary and co-morbid symptoms. This will allow for the possibility of early intervention with more novel and targeted treatments that fit with not only individual patient variability, but also with changes that occur over time with the evolution of the disease.
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Affiliation(s)
- S Hayley
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada.
| | - F Vahid-Ansari
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
| | - H Sun
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
| | - P R Albert
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Ottawa Hospital Research Institute (Neuroscience), University of Ottawa, Canada
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Inactivation of microglia dampens blood-brain barrier permeability and loss of dopaminergic neurons in paraquat-lesioned mice. Food Chem Toxicol 2023; 174:113692. [PMID: 36842752 DOI: 10.1016/j.fct.2023.113692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/15/2023] [Accepted: 02/22/2023] [Indexed: 02/26/2023]
Abstract
Prior studies indicated the involvement of neuroinflammation in the dopaminergic neurodegeneration in mice of paraquat (PQ)-induced Parkinson's disease (PD), but the underlying mechanisms remain to be elucidated. The present study explored whether microglia-mediated inflammation disrupted blood-brain barrier (BBB) and its related mechanism. C57BL/6 mice were injected intraperitoneally with PQ, twice a week for six weeks, following with or without minocycline (intraperitoneal injection, once every two days). The microglial activation, BBB permeability, expression of tight junctions (TJs) proteins and matrix metalloproteinase (MMP), as well as the loss of dopaminergic neurons and neurological deficits assessment, were evaluated. Minocycline efficiently restrained nigral microglial activation induced by PQ in mice. PQ-induced increase of EB content in the brain and excessive expression of zonula occludin-1 (ZO-1), claudin-5 and occludin were significantly dampened by minocycline treatment. Inhibition of microglial activation by minocycline greatly ameliorated the loss of dopaminergic neurons and neurological dysfunctions in PQ-exposed mice. Also, microglial inactivation downregulated the expression of MMP-2/9 in PQ-lesioned mice. These findings suggested the potential protection of suppressing microglia-mediated neuroinflammation against dopaminergic neurodegeneration through attenuating BBB disruption in a mouse of PQ-induced PD, and MMP-2/9 might involve in the contribution, which needs to be verified in future study.
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Atone J, Wagner K, Koike S, Yang J, Hwang SH, Hammock BD. Inhibition of soluble epoxide hydrolase reduces paraquat neurotoxicity in rodents. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 98:104070. [PMID: 36682504 PMCID: PMC9992278 DOI: 10.1016/j.etap.2023.104070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Given the paucity of research surrounding the effect of chronic paraquat on striatal neurotoxicity, there is a need for further investigation into the neurotoxic effects of paraquat in mouse striatum. Furthermore, while previous studies have shown that inhibiting soluble epoxide hydrolase mitigates MPTP-mediated endoplasmic reticulum stress in mouse striatum, its effect on paraquat toxicity is still unknown. Thus, this study attempts to observe changes in inflammatory and endoplasmic reticulum stress markers in mouse striatum following chronic paraquat administration to determine whether inhibiting soluble epoxide hydrolase mitigates paraquat-induced neurotoxicity and whether it can reduce TLR4-mediated inflammation in primary astrocytes and microglia. Our results show that while the pro-inflammatory effect of chronic paraquat is small, there is a significant induction of inflammatory and cellular stress markers, such as COX2 and CHOP, that can be mitigated through a prophylactic administration of a soluble epoxide hydrolase inhibitor.
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Affiliation(s)
- Jogen Atone
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Karen Wagner
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Shinichiro Koike
- Department of Nutrition, University of California Davis, Davis, CA 95616, USA
| | - Jun Yang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Sung Hee Hwang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California Davis, Davis, CA 95616, USA.
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Small molecule-mediated allosteric activation of the base excision repair enzyme 8-oxoguanine DNA glycosylase and its impact on mitochondrial function. Sci Rep 2022; 12:14685. [PMID: 36038587 PMCID: PMC9424235 DOI: 10.1038/s41598-022-18878-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/22/2022] [Indexed: 02/07/2023] Open
Abstract
8-Oxoguanine DNA glycosylase (OGG1) initiates base excision repair of the oxidative DNA damage product 8-oxoguanine. OGG1 is bifunctional; catalyzing glycosyl bond cleavage, followed by phosphodiester backbone incision via a β-elimination apurinic lyase reaction. The product from the glycosylase reaction, 8-oxoguanine, and its analogues, 8-bromoguanine and 8-aminoguanine, trigger the rate-limiting AP lyase reaction. The precise activation mechanism remains unclear. The product-assisted catalysis hypothesis suggests that 8-oxoguanine and analogues bind at the product recognition (PR) pocket to enhance strand cleavage as catalytic bases. Alternatively, they may allosterically activate OGG1 by binding outside of the PR pocket to induce an active-site conformational change to accelerate apurinic lyase. Herein, steady-state kinetic analyses demonstrated random binding of substrate and activator. 9-Deazaguanine, which can't function as a substrate-competent base, activated OGG1, albeit with a lower Emax value than 8-bromoguanine and 8-aminoguanine. Random compound screening identified small molecules with Emax values similar to 8-bromoguanine. Paraquat-induced mitochondrial dysfunction was attenuated by several small molecule OGG1 activators; benefits included enhanced mitochondrial membrane and DNA integrity, less cytochrome c translocation, ATP preservation, and mitochondrial membrane dynamics. Our results support an allosteric mechanism of OGG1 and not product-assisted catalysis. OGG1 small molecule activators may improve mitochondrial function in oxidative stress-related diseases.
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Shahabadi N, Moshiri M, Roohbakhsh A, Imen Shahidi M, Hashemi M, Amin F, Yazdian-Robati R, Salmasi Z, Etemad L. A dose-related positive effect of inhaled simvastatin loaded PLGA nanoparticles on paraquat-induced pulmonary fibrosis in rats. Basic Clin Pharmacol Toxicol 2022; 131:251-261. [PMID: 35802512 DOI: 10.1111/bcpt.13771] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Pulmonary fibrosis is an important complication of subacute Paraquat (PQ) poisoning. Here, we reported a novel nanotherapeutic platform for paraquat (PQ)-induced pulmonary fibrosis in animal inhalation models using simvastatin (SV) loaded into Poly (lactic-co-glycolic acid) (PLGA) nanoparticles (NPs). METHODS & MATERIALS Eight inhalations of normal saline, PQ (24mg/kg), PQ plus SV (20 mg/kg), PQ plus SV- loaded PLGA NPs at doses of 5, 10 or 20 mg/kg or PQ plus PLGA NPs were given to rats. After the end of the treatment period, inflammatory factors and creatine phosphokinase as well as lung pathological changes and tracheal responsiveness were evaluated. RESULTS Inhalation of simvastatin loaded PLGA NPs could significantly prevent the progression of PQ-induced pulmonary fibrosis especially at a dose of 10 mg through decreasing the serum level of inflammatory factors as well as contractile responses (P<0.001) compared to PQ group. Pathological findings also confirmed the results. However, inhalation of non-formulated SV could not prevent tissue damage and fibrosis. CONCLUSION Taken together, the present work provides us an idea about the pulmonary delivery of PLGA-SV NPs using nebulizer for the treatment of PQ poisoning. However, the efficacy of this formulation in humans and clinical use needs to be more investigated.
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Affiliation(s)
- Nasrin Shahabadi
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Moshiri
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohsen Imen Shahidi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Hashemi
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Amin
- Department of Physiology and Pharmacology, School of Medicine, Physiology-Pharmacology Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Rezvan Yazdian-Robati
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zahra Salmasi
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Etemad
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Drug and Food Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Yang HM, Wang YL, Liu CY, Zhou YT, Zhang XF. A time-course study of microglial activation and dopaminergic neuron loss in the substantia nigra of mice with paraquat-induced Parkinson's disease. Food Chem Toxicol 2022; 164:113018. [DOI: 10.1016/j.fct.2022.113018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/01/2022] [Accepted: 04/11/2022] [Indexed: 11/25/2022]
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Peng H, Fu S, Wang S, Xu H, Dhanasekaran M, Chen H, Shao C, Yuanzhuo, Ren J. Ablation of FUNDC1-dependent mitophagy renders myocardium resistant to paraquat-induced ferroptosis and contractile dysfunction. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166448. [DOI: 10.1016/j.bbadis.2022.166448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 02/08/2023]
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See WZC, Naidu R, Tang KS. Cellular and Molecular Events Leading to Paraquat-Induced Apoptosis: Mechanistic Insights into Parkinson’s Disease Pathophysiology. Mol Neurobiol 2022; 59:3353-3369. [PMID: 35306641 PMCID: PMC9148284 DOI: 10.1007/s12035-022-02799-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 03/09/2022] [Indexed: 12/17/2022]
Abstract
Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterized by the cardinal features of tremor, bradykinesia, rigidity, and postural instability, in addition to other non-motor symptoms. Pathologically, PD is attributed to the loss of dopaminergic neurons in the substantia nigra pars compacta, with the hallmark of the presence of intracellular protein aggregates of α-synuclein in the form of Lewy bodies. The pathogenesis of PD is still yet to be fully elucidated due to the multifactorial nature of the disease. However, a myriad of studies has indicated several intracellular events in triggering apoptotic neuronal cell death in PD. These include oxidative stress, mitochondria dysfunction, endoplasmic reticulum stress, alteration in dopamine catabolism, inactivation of tyrosine hydroxylase, and decreased levels of neurotrophic factors. Laboratory studies using the herbicide paraquat in different in vitro and in vivo models have demonstrated the induction of many PD pathological features. The selective neurotoxicity induced by paraquat has brought a new dawn in our perspectives about the pathophysiology of PD. Epidemiological data have suggested an increased risk of developing PD in the human population exposed to paraquat for a long term. This model has opened new frontiers in the quest for new therapeutic targets for PD. The purpose of this review is to synthesize the relationship between the exposure of paraquat and the pathogenesis of PD in in vitro and in vivo models.
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Affiliation(s)
- Wesley Zhi Chung See
- Jeffrey Cheah School of Medicine and Health Science, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia
| | - Rakesh Naidu
- Jeffrey Cheah School of Medicine and Health Science, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia
| | - Kim San Tang
- School of Pharmacy, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia.
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14
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Linares-Hernández I, Antonio Castillo-Suárez L, Ibanez JG, Vasquez-Medrano R, Miguel López-Rebollar B, Santoyo-Tepole F, Alejandra Teutli-Sequeira E, Martínez-Cienfuegos IG. Degradation of commercial paraquat in a solar-Fenton pilot lagoon using iron oxalate as a chelating agent: Hydro-thermal analysis with CFD. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Buck SA, Erickson-Oberg MQ, Bhatte SH, McKellar CD, Ramanathan VP, Rubin SA, Freyberg Z. Roles of VGLUT2 and Dopamine/Glutamate Co-Transmission in Selective Vulnerability to Dopamine Neurodegeneration. ACS Chem Neurosci 2022; 13:187-193. [PMID: 34994539 DOI: 10.1021/acschemneuro.1c00741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Growing evidence has established that a subset of dopamine (DA) neurons co-release glutamate and express vesicular glutamate transporter 2 (VGLUT2). VGLUT2 expression in DA neurons plays a key role in selective vulnerability to DA neurodegeneration in Parkinson's disease (PD). In this review, we summarize recent findings on impacts of VGLUT2 expression and glutamate co-release from DA neurons on selective DA neuron vulnerability. We present evidence that DA neuron VGLUT2 expression may be neuroprotective, boosting DA neuron resilience in the context of ongoing neurodegenerative processes in PD. We highlight genetic and pesticide models of PD that have provided mechanistic insights into selective DA neuron vulnerability. Finally, we discuss potential neuroprotective mechanisms, focusing on roles of VGLUT2 and glutamate in promoting mitochondrial health and diminishing oxidative stress and excitotoxicity. Elucidating these mechanisms may ultimately lead to more effective treatments to boost DA neuron resilience that can slow or even prevent DA neurodegeneration.
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Affiliation(s)
- Silas A. Buck
- Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - M. Quincy Erickson-Oberg
- Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Sai H. Bhatte
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Chase D. McKellar
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Vishan P. Ramanathan
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Sophie A. Rubin
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
| | - Zachary Freyberg
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, United States
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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16
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Wang K, Zhang B, Tian T, Zhang B, Shi G, Zhang C, Li G, Huang M. Taurine protects dopaminergic neurons in paraquat-induced Parkinson's disease mouse model through PI3K/Akt signaling pathways. Amino Acids 2021; 54:1-11. [PMID: 34837554 DOI: 10.1007/s00726-021-03104-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/24/2021] [Indexed: 01/19/2023]
Abstract
Taurine (Tau) is one of the most abundant amino acids in the brain and regulates physiological functions in the central nervous system, including anti-inflammatory effects. There is growing evidence that microglia-mediated neuro-inflammatory responses are an integral part of Parkinson's disease (PD) onset and progression. Among the many factors regulating the inflammatory response, phosphatidylinositol-3 kinase (PI3K) is susceptible to activation by a variety of cytokines and physicochemical factors, and subsequently recruits signaling proteins containing the pleckstrin homology structural domain to further regulate protein kinase B (AKT) expression involved in the regulation of the intracellular immune response and inflammatory response. Therefore, we established a PD mouse model using paraquat (PQ) intraperitoneal injection staining to explore the mechanism of Tau action on PI3K/AKT signaling pathway. Our study showed that PD mice with Tau intervention recovered motor and non-motor functions to some extent, and the number of dopaminergic (DAc) neurons in the substantia nigra and the level of dopamine (DA) secretion in the striatum were also significantly increased compared with the PQ-dyed group, and the protein content of PI3K and PDK-1 and the phosphorylation level of AKT were reduced in parallel with the reduction in the expression of microglia and related inflammatory factors. In conclusion, our results suggest that Tau may regulate microglia-mediated inflammatory responses through inhibition of the PI3K/AKT pathway in the midbrain of PD mice, thereby reducing DAc neurons damage.
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Affiliation(s)
- Kaidong Wang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Baofu Zhang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Tian Tian
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Bingyang Zhang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Ge Shi
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Chunhui Zhang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Guoliang Li
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China.,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China
| | - Min Huang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China. .,Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.
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