1
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Cheron J, Beccari L, Hagué P, Icick R, Despontin C, Carusone T, Defrance M, Bhogaraju S, Martin-Garcia E, Capellan R, Maldonado R, Vorspan F, Bonnefont J, de Kerchove d'Exaerde A. USP7/Maged1-mediated H2A monoubiquitination in the paraventricular thalamus: an epigenetic mechanism involved in cocaine use disorder. Nat Commun 2023; 14:8481. [PMID: 38123574 PMCID: PMC10733359 DOI: 10.1038/s41467-023-44120-2] [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: 12/23/2022] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open
Abstract
The risk of developing drug addiction is strongly influenced by the epigenetic landscape and chromatin remodeling. While histone modifications such as methylation and acetylation have been studied in the ventral tegmental area and nucleus accumbens (NAc), the role of H2A monoubiquitination remains unknown. Our investigations, initially focused on the scaffold protein melanoma-associated antigen D1 (Maged1), reveal that H2A monoubiquitination in the paraventricular thalamus (PVT) significantly contributes to cocaine-adaptive behaviors and transcriptional repression induced by cocaine. Chronic cocaine use increases H2A monoubiquitination, regulated by Maged1 and its partner USP7. Accordingly, Maged1 specific inactivation in thalamic Vglut2 neurons, or USP7 inhibition, blocks cocaine-evoked H2A monoubiquitination and cocaine locomotor sensitization. Additionally, genetic variations in MAGED1 and USP7 are linked to altered susceptibility to cocaine addiction and cocaine-associated symptoms in humans. These findings unveil an epigenetic modification in a non-canonical reward pathway of the brain and a potent marker of epigenetic risk factors for drug addiction in humans.
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Affiliation(s)
- Julian Cheron
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute, Neurophysiology Laboratory, Brussels, Belgium
| | - Leonardo Beccari
- Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Madrid, Spain
- Université Claude Bernard Lyon 1, Pathophysiology and Genetics of Neuron and Muscle, CNRS UMR 5261, INSERM U1315, Lyon, France
| | - Perrine Hagué
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute, Neurophysiology Laboratory, Brussels, Belgium
| | - Romain Icick
- INSERM UMRS_1144, Université Paris Cité, Paris, France
| | - Chloé Despontin
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute, Neurophysiology Laboratory, Brussels, Belgium
| | | | - Matthieu Defrance
- Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | | | - Elena Martin-Garcia
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Barcelona, Spain
| | - Roberto Capellan
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Rafael Maldonado
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | | | - Jérôme Bonnefont
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute, Institut de Recherches en Biologie Humaine et Moléculaire (IRIBHM), Brussels, Belgium
| | - Alban de Kerchove d'Exaerde
- Université Libre de Bruxelles (ULB), ULB Neuroscience Institute, Neurophysiology Laboratory, Brussels, Belgium.
- WELBIO, Wavre, Belgium.
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2
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Wang J, Xu SY, Ye ZY, Sun ZN, Zhang JQ, Qi C, Liu R, Gao X, He C, You WY, Gao J. The deficiency of Maged1 attenuates Parkinson's disease progression in mice. Mol Brain 2023; 16:22. [PMID: 36774489 PMCID: PMC9921624 DOI: 10.1186/s13041-023-01011-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/02/2023] [Indexed: 02/13/2023] Open
Abstract
Melanoma-associated antigen D1 (Maged1) has critical functions in the central nervous system in both developmental and adult stages. Loss of Maged1 in mice has been linked to depression, cognitive disorder, and drug addiction. However, the role of Maged1 in Parkinson's disease (PD) remains unclear. In this study, we observed that Maged1 was expressed in the dopaminergic (DA) neurons of the substantia nigra in mice and humans, which could be upregulated by the in vivo or in vitro treatment with 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) or 1-Methyl-4-phenylpyridinium iodide (MPP+). Genetic ablation of Maged1 in mice attenuated motor deficits, the loss of DA neurons, and disease progression induced by MPTP. Moreover, Maged1 deficiency protected DA neurons against MPP+-induced toxicity in primary cultured cells. Mechanistically, loss of Maged1 upregulated the Akt signaling pathway and downregulated the mTOR signaling pathway in SH-SY5Y cells, which may in turn attenuate the cell apoptosis and impairment of autophagy. Consistent with it, the degeneration of midbrain and striatum among elderly Maged1 knockout mice was relatively mild compared to those in wild-type mice under physiological conditions. Taken together, this study suggested that Maged1 deficiency inhibited apoptosis and enhanced autophagy, which may provide a new potential target for the therapy of PD.
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Affiliation(s)
- Jie Wang
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Sheng-Ye Xu
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Zhi-Yuan Ye
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Zhou-Na Sun
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Jia-Qi Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Cui Qi
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Rui Liu
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Xiang Gao
- SKL of Pharmaceutical Biotechnology and Model Animal Research Center, Collaborative Innovation Center for Genetics and Development, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, 210061, China
| | - Chuan He
- Department of Rehabilitation Medicine, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China.
| | - Wei-Yan You
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China.
| | - Jun Gao
- Department of Neurobiology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China.
- Department of Rehabilitation Medicine, The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China.
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3
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Park S, Kwon W, Kim HY, Ji YR, Kim D, Kim W, Han JE, Cho GJ, Yun S, Kim MO, Ryoo ZY, Han SH, Park JK, Choi SK. Knockdown of Maged1 inhibits cell cycle progression and causes cell death in mouse embryonic stem cells. Differentiation 2022; 125:18-26. [DOI: 10.1016/j.diff.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 11/25/2022]
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4
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Zhang Y, Zhang X, Liu N, Ren S, Xia C, Yang X, Lou Y, Wang H, Zhang N, Yan X, Zhang Z, Zhang Y, Wang Z, Chen N. Comparative Proteomic Characterization of Ventral Hippocampus in Susceptible and Resilient Rats Subjected to Chronic Unpredictable Stress. Front Neurosci 2021; 15:675430. [PMID: 34220431 PMCID: PMC8249003 DOI: 10.3389/fnins.2021.675430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/10/2021] [Indexed: 12/19/2022] Open
Abstract
Chronic stress is an essential factor leading to depression. However, there exist individual differences in people exposed to the same stressful stimuli. Some people display negative psychology and behavior, while others are normal. Given the importance of individual difference, finding differentially expressed proteins in stress-resistant and stress-susceptible groups has great significance for the study of pathogenesis and treatment of depression. In this study, stress-susceptible rats and stress-resilient rats were first distinguished by sucrose preference test. These stress-susceptible rats also displayed depression-like behaviors in forced swimming test and open field test. Then, we employed label-free quantitative proteomics to analyze proteins in the ventral hippocampus. There were 4,848 proteins totally identified. Based on statistical analysis, we found 276 differentially expressed proteins. Bioinformatics analysis revealed that the biological processes of these differential proteins were related to mitochondrion organization, protein localization, coenzyme metabolic process, cerebral cortex tangential migration, vesicle-mediated transport, and so on. The KEGG pathways were mainly involved in metabolic pathways, axon guidance, autophagy, and tight junction. Furthermore, we ultimately found 20 stress-susceptible proteins and two stress-resilient proteins. These stress-related proteins could not only be potential biomarkers for depression diagnosis but also contribute to finding new therapeutic targets and providing personalized medicine.
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Affiliation(s)
- Yani Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Clinical Pharmacology and Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoling Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nuo Liu
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Siyu Ren
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Congyuan Xia
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiong Yang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuxia Lou
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huiqin Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ningning Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xu Yan
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhao Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yi Zhang
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Zhenzhen Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China
| | - Naihong Chen
- State Key Laboratory of Bioactive Substances and Function of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy Medical Sciences and Peking Union Medical College, Beijing, China.,Institute of Clinical Pharmacology and Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China
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5
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Florke Gee RR, Chen H, Lee AK, Daly CA, Wilander BA, Fon Tacer K, Potts PR. Emerging roles of the MAGE protein family in stress response pathways. J Biol Chem 2020; 295:16121-16155. [PMID: 32921631 PMCID: PMC7681028 DOI: 10.1074/jbc.rev120.008029] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 09/08/2020] [Indexed: 12/21/2022] Open
Abstract
The melanoma antigen (MAGE) proteins all contain a MAGE homology domain. MAGE genes are conserved in all eukaryotes and have expanded from a single gene in lower eukaryotes to ∼40 genes in humans and mice. Whereas some MAGEs are ubiquitously expressed in tissues, others are expressed in only germ cells with aberrant reactivation in multiple cancers. Much of the initial research on MAGEs focused on exploiting their antigenicity and restricted expression pattern to target them with cancer immunotherapy. Beyond their potential clinical application and role in tumorigenesis, recent studies have shown that MAGE proteins regulate diverse cellular and developmental pathways, implicating them in many diseases besides cancer, including lung, renal, and neurodevelopmental disorders. At the molecular level, many MAGEs bind to E3 RING ubiquitin ligases and, thus, regulate their substrate specificity, ligase activity, and subcellular localization. On a broader scale, the MAGE genes likely expanded in eutherian mammals to protect the germline from environmental stress and aid in stress adaptation, and this stress tolerance may explain why many cancers aberrantly express MAGEs Here, we present an updated, comprehensive review on the MAGE family that highlights general characteristics, emphasizes recent comparative studies in mice, and describes the diverse functions exerted by individual MAGEs.
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Affiliation(s)
- Rebecca R Florke Gee
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA; Graduate School of Biomedical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Helen Chen
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Anna K Lee
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Christina A Daly
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA; Graduate School of Biomedical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Benjamin A Wilander
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA; Graduate School of Biomedical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Klementina Fon Tacer
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA; School of Veterinary Medicine, Texas Tech University, Amarillo, Texas, USA.
| | - Patrick Ryan Potts
- Cell and Molecular Biology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.
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Abstract
Drug consumption is driven by a drug's pharmacological effects, which are experienced as rewarding, and is influenced by genetic, developmental, and psychosocial factors that mediate drug accessibility, norms, and social support systems or lack thereof. The reinforcing effects of drugs mostly depend on dopamine signaling in the nucleus accumbens, and chronic drug exposure triggers glutamatergic-mediated neuroadaptations in dopamine striato-thalamo-cortical (predominantly in prefrontal cortical regions including orbitofrontal cortex and anterior cingulate cortex) and limbic pathways (amygdala and hippocampus) that, in vulnerable individuals, can result in addiction. In parallel, changes in the extended amygdala result in negative emotional states that perpetuate drug taking as an attempt to temporarily alleviate them. Counterintuitively, in the addicted person, the actual drug consumption is associated with an attenuated dopamine increase in brain reward regions, which might contribute to drug-taking behavior to compensate for the difference between the magnitude of the expected reward triggered by the conditioning to drug cues and the actual experience of it. Combined, these effects result in an enhanced motivation to "seek the drug" (energized by dopamine increases triggered by drug cues) and an impaired prefrontal top-down self-regulation that favors compulsive drug-taking against the backdrop of negative emotionality and an enhanced interoceptive awareness of "drug hunger." Treatment interventions intended to reverse these neuroadaptations show promise as therapeutic approaches for addiction.
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Affiliation(s)
- Nora D Volkow
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
| | - Michael Michaelides
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
| | - Ruben Baler
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
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7
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Environmental enrichment improves pain sensitivity, depression-like phenotype, and memory deficit in mice with neuropathic pain: role of NPAS4. Psychopharmacology (Berl) 2019; 236:1999-2014. [PMID: 30798405 DOI: 10.1007/s00213-019-5187-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/30/2019] [Indexed: 01/15/2023]
Abstract
Patients suffering from neuropathic pain have a higher incidence of depression and cognitive decline. Although environment enrichment (EE) may be effective in the treatment of neuropathic pain, the precise mechanisms underlying its actions remain determined. The aim of the study was to examine the molecular mechanisms underlying the EE's beneficial effects in mice with neuropathic pain. EE attenuated the pain threshold reduction, depression-like phenotype, and memory deficit in mice after chronic constriction injury (CCI). Furthermore, EE attenuated decreased neurogenesis and increased inflammation in the hippocampus of mice with neuropathic pain after CCI. Moreover, the suppression of adult hippocampal neurogenesis by temozolomide antagonized the beneficial effects of EE on depression-like phenotype and cognitive deficit in the mice with neuropathic pain. In addition, lipopolysaccharide-induced increase in tumor necrosis factor-α (TNF-α) in the hippocampus antagonized the beneficial effects of EE for these behavioral abnormalities in mice with neuropathic pain. Knock-down of NPAS4 (neuronal PAS domain protein 4) in the hippocampus by lentivirus targeting NPAS4 blocked these beneficial effects of EE in the mice with neuropathic pain. These all findings suggest that hippocampal NPAS4 plays a key role in the beneficial effects of EE on the pain sensitivity, depression-like phenotype, and memory deficit in mice with neuropathic pain. Therefore, it is likely that NPAS4 would be a new therapeutic target for perceptional, affective, and cognitive dimensions in patients with chronic pain.
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8
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Wang J, Xie R, Kou X, Liu Y, Qi C, Liu R, You W, Gao J, Gao X. A protein phosphatase 2A deficit in the hippocampal CA1 area impairs memory extinction. Mol Brain 2019; 12:51. [PMID: 31113458 PMCID: PMC6528246 DOI: 10.1186/s13041-019-0469-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/30/2019] [Indexed: 01/17/2023] Open
Abstract
Protein phosphorylation plays an important role in learning and memory. Protein phosphatase 2A (PP2A) is a serine/threonine phosphatase involved in the regulation of neural synaptic plasticity. Here, to determine if PP2A is necessary for successful learning and memory, we have utilized a Tg (Camk2a-cre) T29–2Stl mice to specific knock down the expression of hippocampal PP2A in mice. By analysing behavioural, we observed that loss of PP2A in the hippocampal CA1 area did not affect the formation of memory but impaired contextual fear memory extinction. We use the electrophysiological recording to find the synaptic mechanisms. The results showed that the basic synapse transmission and synaptic plasticity of PP2A conditional knockout (CKO) mice were impaired. Moreover, PP2A CKO mice exhibited a saturating long-term potentiation inducted by strong theta burst stimulation but no depotentiation after low-frequency stimulation. Taken together, our results provide the evidence that PP2A is involved in synaptic transmission and hippocampus-dependent memory extinction.
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Affiliation(s)
- Jing Wang
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Ran Xie
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Xiaolin Kou
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Yu Liu
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Cui Qi
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Rui Liu
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Weiyan You
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Jun Gao
- Department of Neurobiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
| | - Xiang Gao
- Model Animal Research Center and MOE Key Laboratory of Model Animals for Disease Study, Nanjing University, Nanjing, 210093, Jiangsu, China.
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9
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Environmental enrichment improves long-term memory impairment and aberrant synaptic plasticity by BDNF/TrkB signaling in nerve-injured mice. Neurosci Lett 2019; 694:93-98. [DOI: 10.1016/j.neulet.2018.11.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/21/2018] [Accepted: 11/24/2018] [Indexed: 11/22/2022]
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10
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Wang Q, Tang J, Jiang S, Huang Z, Song A, Hou S, Gao X, Ruan HB. Inhibition of PPARγ, adipogenesis and insulin sensitivity by MAGED1. J Endocrinol 2018; 239:167-180. [PMID: 30121577 DOI: 10.1530/joe-18-0349] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 08/14/2018] [Indexed: 12/28/2022]
Abstract
Peroxisome proliferator-activated receptor-γ (PPARγ) is a master regulator of adipogenesis and a target of the thiazolidinedione (TZD) class of antidiabetic drugs; therefore, identifying novel regulators of PPARγ action in adipocytes is essential for the future development of therapeutics for diabetes. MAGE family member D1 (MAGED1), by acting as an adaptor for ubiquitin-dependent degradation pathways and a co-factor for transcription, plays an important role in neural development, cell differentiation and circadian rhythm. Here, we showed that MAGED1 expression was downregulated during adipogenesis and loss of MAGED1 promoted preadipocyte proliferation and differentiation in vitro. MAGED1 bound to PPARγ and suppressed the stability and transcriptional activity of PPARγ. Compared to WT littermates, MAGED1-deficient mice showed increased levels of PPARγ protein and its target genes, more CD29+CD34+Sca-1+ adipocyte precursors and hyperplasia of white adipose tissues (WATs). Moreover, MAGED1-deficient mice developed late-onset obesity as a result of decreased energy expenditure and physical activity. However, these mice were metabolically healthy as shown by improved glucose clearance and insulin sensitivity, normal levels of serum lipids and enhanced secretion of adipokines such as leptin and adiponectin. Taken together, our data identify MAGED1 as a novel negative regulator of PPARγ activity, adipogenesis and insulin sensitivity in mice. MAGED1 might therefore serve as a novel pharmaceutical target to treat obesity-associated insulin resistance.
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Affiliation(s)
- Qinghua Wang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
- Laboratory Animal Center, Nantong University, Nantong, Jiangsu, China
| | - Jing Tang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
| | - Shujun Jiang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
- School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Zan Huang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
- Laboratory of Gastrointestinal Microbiology, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Anying Song
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
| | - Siyuan Hou
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
| | - Xiang Gao
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing, Jiangsu, China
| | - Hai-Bin Ruan
- Department of Integrative Biology and Physiology, University of Minnesota Medical School, Minneapolis, Minnesota, USA
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11
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Abstract
Most Mage family members code for antigens on melanoma tumor cells. Maged1 is the black sheep, promiscuously found in normal adult cells, including neurons of the basal ganglia and prefrontal cortex. In this issue of EMBO reports , De Backer et al 1 propose an unexpected role for Maged1 . Acute effects of cocaine, such as enhanced locomotion and reinforcement, are gone in mice in which the gene is deleted. In a painstaking combinatorial approach comparing several conditional gene knockout (KO ) mouse lines, the authors parse the relevant neural circuits.
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Affiliation(s)
- Michael Loureiro
- Department of Basic NeurosciencesMedical FacultyUniversity of GenevaGenevaSwitzerland
| | - Christian Lüscher
- Department of Basic NeurosciencesMedical FacultyUniversity of GenevaGenevaSwitzerland
- Department of Clinical NeurosciencesClinic of NeurologyGeneva University HospitalGenevaSwitzerland
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12
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De Backer JF, Monlezun S, Detraux B, Gazan A, Vanopdenbosch L, Cheron J, Cannazza G, Valverde S, Cantacorps L, Nassar M, Venance L, Valverde O, Faure P, Zoli M, De Backer O, Gall D, Schiffmann SN, de Kerchove d'Exaerde A. Deletion of Maged1 in mice abolishes locomotor and reinforcing effects of cocaine. EMBO Rep 2018; 19:embr.201745089. [PMID: 30002119 DOI: 10.15252/embr.201745089] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/21/2022] Open
Abstract
Melanoma antigen genes (Mage) were first described as tumour markers. However, some of Mage are also expressed in healthy cells where their functions remain poorly understood. Here, we describe an unexpected role for one of these genes, Maged1, in the control of behaviours related to drug addiction. Mice lacking Maged1 are insensitive to the behavioural effects of cocaine as assessed by locomotor sensitization, conditioned place preference (CPP) and drug self-administration. Electrophysiological experiments in brain slices and conditional knockout mice demonstrate that Maged1 is critical for cortico-accumbal neurotransmission. Further, expression of Maged1 in the prefrontal cortex (PFC) and the amygdala, but not in dopaminergic or striatal and other GABAergic neurons, is necessary for cocaine-mediated behavioural sensitization, and its expression in the PFC is also required for cocaine-induced extracellular dopamine (DA) release in the nucleus accumbens (NAc). This work identifies Maged1 as a critical molecule involved in cellular processes and behaviours related to addiction.
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Affiliation(s)
- Jean-François De Backer
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Stéphanie Monlezun
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Bérangère Detraux
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Adeline Gazan
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Laura Vanopdenbosch
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Julian Cheron
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Giuseppe Cannazza
- Dipartimento di Scienze della Vita, Centro di Neuroscienze e Neurotecnologie, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - Sébastien Valverde
- INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS), UPMC Univ Paris 06 Sorbonne Universités, Paris, France
| | - Lídia Cantacorps
- Departament de Ciències Experimentals i de la Salut, Grup de Recerca en Neurobiologia del Comportament (GReNeC), Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Universitat Pompeu Fabra, Barcelone, Spain
| | - Mérie Nassar
- Center for Interdisciplinary Research in Biology, Collège de France, INSERM U1050, CNRS UMR7241, Labex Memolife, Paris, France
| | - Laurent Venance
- Center for Interdisciplinary Research in Biology, Collège de France, INSERM U1050, CNRS UMR7241, Labex Memolife, Paris, France
| | - Olga Valverde
- Departament de Ciències Experimentals i de la Salut, Grup de Recerca en Neurobiologia del Comportament (GReNeC), Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Universitat Pompeu Fabra, Barcelone, Spain
| | - Philippe Faure
- INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine (NPS - IBPS), UPMC Univ Paris 06 Sorbonne Universités, Paris, France
| | - Michele Zoli
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze, Centro di Neuroscienze e Neurotecnologie, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - Olivier De Backer
- URPHYM (Unité de Recherche en Physiologie Moléculaire), NARILIS (Namur Research Institute for Life Sciences), Université de Namur, Namur, Belgium
| | - David Gall
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Serge N Schiffmann
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Alban de Kerchove d'Exaerde
- Laboratoire de Neurophysiologie, ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), Brussels, Belgium .,WELBIO, Brussels, Belgium
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Ali T, Kim T, Rehman SU, Khan MS, Amin FU, Khan M, Ikram M, Kim MO. Natural Dietary Supplementation of Anthocyanins via PI3K/Akt/Nrf2/HO-1 Pathways Mitigate Oxidative Stress, Neurodegeneration, and Memory Impairment in a Mouse Model of Alzheimer's Disease. Mol Neurobiol 2017; 55:6076-6093. [PMID: 29170981 DOI: 10.1007/s12035-017-0798-6] [Citation(s) in RCA: 299] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/05/2017] [Indexed: 01/11/2023]
Abstract
Well-established studies have shown an elevated level of reactive oxygen species (ROS) that induces oxidative stress in the Alzheimer's disease (AD) patient's brain and an animal model of AD. Herein, we investigated the underlying anti-oxidant neuroprotective mechanism of natural dietary supplementation of anthocyanins extracted from Korean black beans in the amyloid precursor protein/presenilin-1 (APP/PS1) mouse model of AD. Both in vivo (APP/PS1 mice) and in vitro (mouse hippocampal HT22 cells) results demonstrated that anthocyanins regulate the phosphorylated-phosphatidylinositol 3-kinase-Akt-glycogen synthase kinase 3 beta (p-PI3K/Akt/GSK3β) pathways and consequently attenuate amyloid beta oligomer (AβO)-induced elevations in ROS level and oxidative stress via stimulating the master endogenous anti-oxidant system of nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (Nrf2/HO-1) pathways and prevent apoptosis and neurodegeneration by suppressing the apoptotic and neurodegenerative markers such as activation of caspase-3 and PARP-1 expression as well as the TUNEL and Fluoro-Jade B-positive neuronal cells in the APP/PS1 mice. In vitro ApoTox-Glo™ Triplex assay results also showed that anthocyanins act as a potent anti-oxidant neuroprotective agent and reduce AβO-induced neurotoxicity in the HT22 cells via PI3K/Akt/Nrf2 signaling. Importantly, anthocyanins improve memory-related pre- and postsynaptic protein markers and memory functions in the APP/PS1 mice. In conclusion, our data suggested that consumption and supplementation of natural-derived anti-oxidant neuroprotective agent such as anthocyanins may be beneficial and suggest new dietary-supplement strategies for intervention in and prevention of progressive neurodegenerative diseases, such as AD.
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Affiliation(s)
- Tahir Ali
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Taehyun Kim
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Shafiq Ur Rehman
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Muhammad Sohail Khan
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Faiz Ul Amin
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Mehtab Khan
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Muhammad Ikram
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Myeong Ok Kim
- Division of Life Science and Applied Life Science (BK 21), College of Natural Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea.
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14
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Grau C, Starkovich M, Azamian MS, Xia F, Cheung SW, Evans P, Henderson A, Lalani SR, Scott DA. Xp11.22 deletions encompassing CENPVL1, CENPVL2, MAGED1 and GSPT2 as a cause of syndromic X-linked intellectual disability. PLoS One 2017; 12:e0175962. [PMID: 28414775 PMCID: PMC5393878 DOI: 10.1371/journal.pone.0175962] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 04/03/2017] [Indexed: 12/27/2022] Open
Abstract
By searching a clinical database of over 60,000 individuals referred for array-based CNV analyses and online resources, we identified four males from three families with intellectual disability, developmental delay, hypotonia, joint hypermobility and relative macrocephaly who carried small, overlapping deletions of Xp11.22. The maximum region of overlap between their deletions spanned ~430 kb and included two pseudogenes, CENPVL1 and CENPVL2, whose functions are not known, and two protein coding genes-the G1 to S phase transition 2 gene (GSPT2) and the MAGE family member D1 gene (MAGED1). Deletions of this ~430 kb region have not been previously implicated in human disease. Duplications of GSPT2 have been documented in individuals with intellectual disability, but the phenotypic consequences of a loss of GSPT2 function have not been elucidated in humans or mouse models. Changes in MAGED1 have not been associated with intellectual disability in humans, but loss of MAGED1 function is associated with neurocognitive and neurobehavioral phenotypes in mice. In all cases, the Xp11.22 deletion was inherited from an unaffected mother. Studies performed on DNA from one of these mothers did not show evidence of skewed X-inactivation. These results suggest that deletions of an ~430 kb region on chromosome Xp11.22 that encompass CENPVL1, CENPVL2, GSPT2 and MAGED1 cause a distinct X-linked syndrome characterized by intellectual disability, developmental delay, hypotonia, joint hypermobility and relative macrocephaly. Loss of GSPT2 and/or MAGED1 function may contribute to the intellectual disability and developmental delay seen in males with these deletions.
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Affiliation(s)
- Christina Grau
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Molly Starkovich
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Mahshid S. Azamian
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Fan Xia
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Baylor Genetics, Houston, Texas, Unite States of America
| | - Sau Wai Cheung
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Baylor Genetics, Houston, Texas, Unite States of America
| | - Patricia Evans
- Departments of Pediatrics and Neurology, University of Texas Southwestern Medical School, Dallas, Texas, United States of America
| | - Alex Henderson
- The Newcastle upon Tyne Hospitals, Newcastle upon Tyne, England
| | - Seema R. Lalani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
| | - Daryl A. Scott
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, United States of America
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas, United States of America
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15
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Sullivan AE, Peet DJ, Whitelaw ML. MAGED1 is a novel regulator of a select subset of bHLH PAS transcription factors. FEBS J 2016; 283:3488-502. [PMID: 27472814 DOI: 10.1111/febs.13824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 07/19/2016] [Accepted: 07/27/2016] [Indexed: 01/04/2023]
Abstract
Transcription factors of the basic helix-loop-helix (bHLH) PER-ARNT-SIM (PAS) family generally have critical and nonredundant biological roles, but some bHLH PAS proteins compete for common cofactors or recognise similar DNA elements. Identifying factors that regulate function of bHLH PAS proteins, particularly in cells where multiple family members are coexpressed, is important for understanding bHLH PAS factor biology. This study identifies and characterises a novel interaction between melanoma-associated antigen D1 (MAGED1) and select members of the bHLH PAS transcription factor family. MAGED1 binds and positively regulates the transcriptional activity of family members SIM1, SIM2, NPAS4 and ARNT2, but does not interact with AhR, HIF1α and ARNT. This interaction is mediated by PAS repeat regions which also form the interface for bHLH PAS dimerisation, and accordingly MAGED1 is not found in complex with bHLH PAS dimers. We show that MAGED1 does not affect bHLH PAS protein levels and cannot be acting as a coactivator of transcriptionally active heterodimers, but rather appears to interact with nascent bHLH PAS proteins in the cytoplasm to enhance their function prior to nuclear import. As a selective regulator, MAGED1 may play an important role in the biology of these specific factors and in general bHLH PAS protein dynamics.
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Affiliation(s)
- Adrienne E Sullivan
- Department of Molecular and Cellular Biology, University of Adelaide, Australia.
| | - Daniel J Peet
- Department of Molecular and Cellular Biology, University of Adelaide, Australia
| | - Murray L Whitelaw
- Department of Molecular and Cellular Biology, University of Adelaide, Australia
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16
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Zhang G, Zhou H, Xue X. Complex roles of NRAGE on tumor. Tumour Biol 2016; 37:11535-11540. [PMID: 27209410 DOI: 10.1007/s13277-016-5084-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/15/2016] [Indexed: 10/21/2022] Open
Abstract
NRAGE, also known as Dlxin-1or MAGE-D1, is a member of type II melanoma-associated antigen (MAGE) and plays an essential role in life activities, including differentiation, apoptosis, and cell cycle. Studies increasingly found that NRAGE is closely related to the tumor events, such as tumor occurrence, invasion, and metastasis. However, complex and contradictory functions of NRAGE in different circumstances are observed, suggesting that NRAGE is unique from other MAGE gene family members. This review summarizes recent findings concerning the structure and biological functions of NRAGE, which may provide a basis for a more comprehensive understanding of and further research on NRAGE.
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Affiliation(s)
- Ge Zhang
- Department of Radiotherapy, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Huandi Zhou
- Department of Radiotherapy, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaoying Xue
- Department of Radiotherapy, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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17
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Liu M, Xu L, Ma X, Xu J, Wang J, Xian M, Zhou X, Wang M, Wang F, Qin A, Pan Q, Wen C. MAGED1 is a negative regulator of bone remodeling in mice. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2653-67. [PMID: 26272363 DOI: 10.1016/j.ajpath.2015.06.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 05/14/2015] [Accepted: 06/01/2015] [Indexed: 01/15/2023]
Abstract
Melanoma antigen family D1 (MAGED1), an important adaptor protein, has been shown to ubiquitously express and play critical roles in many aspects of cellular events and physiological functions. However, its role in bone remodeling remains unknown. We, therefore, analyzed the bone phenotype of Maged1-deficient mice. Maged1-deficient mice displayed a significant osteoporotic phenotype with a marked decrease in bone density and deterioration of trabecular architecture. Histomorphometric analysis demonstrated an increased mineral apposition rate as well as increased osteoclast number and surface in Maged1 knockout mice. At the cellular level, Maged1-deficient osteoblasts exhibited an increased proliferation rate and accelerated differentiation. MAGED1 deficiency also caused a promotion in osteoclastogenesis, and that was attributed to the cell autonomous acceleration of differentiation in osteoclasts and an increased receptor activator of NF-κB ligand/osteoprotegerin ratio, a major index of osteoclastogenesis, in osteoblasts. Thus, we identified MAGED1 as a novel regulator of osteoblastogenesis, osteoclastogenesis, and bone remodeling in a mouse model.
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Affiliation(s)
- Mei Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Lijuan Xu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xiao Ma
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jiake Xu
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, Western Australia, Australia
| | - Jing Wang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Mengmeng Xian
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xiaotian Zhou
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Min Wang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Fang Wang
- Department of Cardiology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - An Qin
- Shanghai Key Laboratory of Orthopaedic Implants, Ninth People's Hospital, Shanghai, China
| | - Qiuhui Pan
- Central Laboratory, People's 10th Hospital, Shanghai, China
| | - Chuanjun Wen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, and College of Life Sciences, Nanjing Normal University, Nanjing, China.
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18
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Ji MH, Wang XM, Sun XR, Zhang H, Ju LS, Qiu LL, Yang JJ, Jia M, Wu J, Yang J. Environmental Enrichment Ameliorates Neonatal Sevoflurane Exposure-Induced Cognitive and Synaptic Plasticity Impairments. J Mol Neurosci 2015; 57:358-65. [PMID: 26227794 DOI: 10.1007/s12031-015-0627-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Accepted: 07/16/2015] [Indexed: 01/01/2023]
Abstract
Early exposure to sevoflurane, an inhalation anesthetic, induces neurodegeneration in the developing brain and subsequent long-term neurobehavioral abnormalities. Here, we investigated whether an enriched environment could mitigate neonatal sevoflurane exposure-induced long-term cognitive and synaptic plasticity impairments. Male C57BL/6 mice were exposed to 3 % sevoflurane 2 h daily for 3 days from postnatal day 6 (P6) to P8. The exposed mice were randomly allocated to an enriched environment for 2 h daily between P8 and P42 or to a standard environment. Their behavior and cognition were assessed using open field (P35) and fear conditioning tests (P41-P42). Hematoxylin-eosin staining was used to study morphological changes in pyramidal neurons of hippocampal CA1 and CA3 regions. Synaptic plasticity alternations were assessed using western blotting, Golgi staining, and electrophysiological recording. We found that sevoflurane-exposed mice housed in a standard environment exhibited a reduced freezing response in the contextual test, decreased number of dendritic spines on pyramidal neurons and synaptic plasticity-related proteins in the hippocampus, and impaired long-term potentiation. However, in an enriched environment, some of these abnormities induced by repeated sevoflurane exposure. In conclusion, neonatal sevoflurane exposure-induced cognitive and synaptic plasticity impairments are ameliorated by an enriched environment.
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Affiliation(s)
- Mu-huo Ji
- Department of Anesthesiology, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Xing-ming Wang
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Xiao-ru Sun
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Hui Zhang
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Ling-sha Ju
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Li-li Qiu
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Jiao-jiao Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical College, Xuzhou, China
| | - Min Jia
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Jing Wu
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China
| | - Jianjun Yang
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, Nanjing, 210002, China.
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