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Rodríguez-Prieto Á, Mateos-White I, Aníbal-Martínez M, Navarro-González C, Gil-Sanz C, Domínguez-Canterla Y, González-Manteiga A, Del Buey Furió V, López-Bendito G, Fazzari P. Nrg1 intracellular signaling regulates the development of interhemispheric callosal axons in mice. Life Sci Alliance 2024; 7:e202302250. [PMID: 38918041 PMCID: PMC11200272 DOI: 10.26508/lsa.202302250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 06/27/2024] Open
Abstract
Schizophrenia is associated with altered cortical circuitry. Although the schizophrenia risk gene NRG1 is known to affect the wiring of inhibitory interneurons, its role in excitatory neurons and axonal development is unclear. Here, we investigated the role of Nrg1 in the development of the corpus callosum, the major interhemispheric connection formed by cortical excitatory neurons. We found that deletion of Nrg1 impaired callosal axon development in vivo. Experiments in vitro and in vivo demonstrated that Nrg1 is cell-autonomously required for axonal outgrowth and that intracellular signaling of Nrg1 is sufficient to promote axonal development in cortical neurons and specifically in callosal axons. Furthermore, our data suggest that Nrg1 signaling regulates the expression of Growth Associated Protein 43, a key regulator of axonal growth. In conclusion, our study demonstrates that NRG1 is involved in the formation of interhemispheric callosal connections and provides a novel perspective on the relevance of NRG1 in excitatory neurons and in the etiology of schizophrenia.
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Affiliation(s)
- Ángela Rodríguez-Prieto
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
| | - Isabel Mateos-White
- Lab of Neural Development, BIOTECMED Institute, Universidad de Valencia, Valencia, Spain
| | - Mar Aníbal-Martínez
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), Sant Joan d'Alacant, Spain
| | - Carmen Navarro-González
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
- Department of Biotechnology, Universitat Politècnica de València, Valencia, Spain
| | - Cristina Gil-Sanz
- Lab of Neural Development, BIOTECMED Institute, Universidad de Valencia, Valencia, Spain
| | - Yaiza Domínguez-Canterla
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
| | - Ana González-Manteiga
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
| | - Verónica Del Buey Furió
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
| | - Guillermina López-Bendito
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-Consejo Superior de Investigaciones Científicas (UMH-CSIC), Sant Joan d'Alacant, Spain
| | - Pietro Fazzari
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe, Valencia, Spain
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Lauby SC, Lapp HE, Salazar M, Semyrenko S, Chauhan D, Margolis AE, Champagne FA. Postnatal maternal care moderates the effects of prenatal bisphenol exposure on offspring neurodevelopmental, behavioral, and transcriptomic outcomes. PLoS One 2024; 19:e0305256. [PMID: 38861567 PMCID: PMC11166292 DOI: 10.1371/journal.pone.0305256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 05/28/2024] [Indexed: 06/13/2024] Open
Abstract
Bisphenols (BP), including BPA and "BPA-free" structural analogs, are commonly used plasticizers that are present in many plastics and are known endocrine disrupting chemicals. Prenatal exposure to BPA has been associated with negative neurodevelopmental and behavioral outcomes in children and in rodent models. Prenatal BPA exposure has also been shown to impair postnatal maternal care provisioning, which can also affect offspring neurodevelopment and behavior. However, there is limited knowledge regarding the biological effects of prenatal exposure to bisphenols other than BPA and the interplay between prenatal bisphenol exposure and postnatal maternal care on adult behavior. The purpose of the current study was to determine the interactive impact of prenatal bisphenol exposure and postnatal maternal care on neurodevelopment and behavior in rats. Our findings suggest that the effects of prenatal bisphenol exposure on eye-opening, adult attentional set shifting and anxiety-like behavior in the open field are dependent on maternal care in the first five days of life. Interestingly, maternal care might also attenuate the effects of prenatal bisphenol exposure on eye opening and adult attentional set shifting. Finally, transcriptomic profiles in male and female medial prefrontal cortex and amygdala suggest that the interactive effects of prenatal bisphenol exposure and postnatal maternal care converge on estrogen receptor signaling and are involved in biological processes related to gene expression and protein translation and synthesis. Overall, these findings indicate that postnatal maternal care plays a critical role in the expression of the effects of prenatal bisphenol exposure on neurodevelopment and adult behavior. Understanding the underlying biological mechanisms involved might allow us to identify potential avenues to mitigate the adverse effects of prenatal bisphenol exposure and improve health and well-being in human populations.
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Affiliation(s)
- Samantha C. Lauby
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
- Center for Molecular Carcinogenesis and Toxicology, University of Texas at Austin, Austin, Texas, United States of America
| | - Hannah E. Lapp
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
| | - Melissa Salazar
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
| | - Sofiia Semyrenko
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
| | - Danyal Chauhan
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
| | - Amy E. Margolis
- Department of Psychiatry, Columbia University Irving Medical Center, New York City, New York, United States of America
| | - Frances A. Champagne
- Department of Psychology, College of Liberal Arts, University of Texas at Austin, Austin, Texas, United States of America
- Center for Molecular Carcinogenesis and Toxicology, University of Texas at Austin, Austin, Texas, United States of America
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3
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Wan C, Xia Y, Yan J, Lin W, Yao L, Zhang M, Gaisler-Salomon I, Mei L, Yin DM, Chen Y. nNOS in Erbb4-positive neurons regulates GABAergic transmission in mouse hippocampus. Cell Death Dis 2024; 15:167. [PMID: 38396027 PMCID: PMC10891175 DOI: 10.1038/s41419-024-06557-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Neuronal nitric oxide synthase (nNOS, gene name Nos1) orchestrates the synthesis of nitric oxide (NO) within neurons, pivotal for diverse neural processes encompassing synaptic transmission, plasticity, neuronal excitability, learning, memory, and neurogenesis. Despite its significance, the precise regulation of nNOS activity across distinct neuronal types remains incompletely understood. Erb-b2 receptor tyrosine kinase 4 (ErbB4), selectively expressed in GABAergic interneurons and activated by its ligand neuregulin 1 (NRG1), modulates GABA release in the brain. Our investigation reveals the presence of nNOS in a subset of GABAergic interneurons expressing ErbB4. Notably, NRG1 activates nNOS via ErbB4 and its downstream phosphatidylinositol 3-kinase (PI3K), critical for NRG1-induced GABA release. Genetic removal of nNos from Erbb4-positive neurons impairs GABAergic transmission, partially rescued by the NO donor sodium nitroprusside (SNP). Intriguingly, the genetic deletion of nNos from Erbb4-positive neurons induces schizophrenia-relevant behavioral deficits, including hyperactivity, impaired sensorimotor gating, and deficient working memory and social interaction. These deficits are ameliorated by the atypical antipsychotic clozapine. This study underscores the role and regulation of nNOS within a specific subset of GABAergic interneurons, offering insights into the pathophysiological mechanisms of schizophrenia, given the association of Nrg1, Erbb4, Pi3k, and Nos1 genes with this mental disorder.
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Affiliation(s)
- Chaofan Wan
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Department of Rehabilitation, School of Health Science, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yucen Xia
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jinglan Yan
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Weipeng Lin
- Joint Center for Translational Medicine, Shanghai Fifth People's Hospital, Fudan University and School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Lin Yao
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Meng Zhang
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Inna Gaisler-Salomon
- School of Psychological Sciences, The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, 3498838, Israel
| | - Lin Mei
- Chinese Institute for Medical Research, Beijing, 100069, China
- Capital Medical University, Beijing, 100069, China
- Chinese Institute for Brain Research, Beijing, 102206, China
| | - Dong-Min Yin
- Joint Center for Translational Medicine, Shanghai Fifth People's Hospital, Fudan University and School of Life Science, East China Normal University, Shanghai, 200062, China.
| | - Yongjun Chen
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
- Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, 510515, China.
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4
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Zhang H, Hu S, Yang P, Long H, Ma Q, Yin D, Xu G. HDAC9-mediated calmodulin deacetylation induces memory impairment in Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14573. [PMID: 38421101 PMCID: PMC10850929 DOI: 10.1111/cns.14573] [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: 06/12/2023] [Revised: 11/20/2023] [Accepted: 12/04/2023] [Indexed: 03/02/2024] Open
Abstract
AIMS Alzheimer's disease (AD) is a neurodegenerative disease characterized by progressive cognitive dysfunction and memory impairment. AD pathology involves protein acetylation. Previous studies have mainly focused on histone acetylation in AD, however, the roles of nonhistone acetylation in AD are less explored. METHODS The protein acetylation and expression levels were detected by western blotting and co-immunoprecipitation. The stoichiometry of acetylation was measured by home-made and site-specific antibodies against acetylated-CaM (Ac-CaM) at K22, K95, and K116. Hippocampus-dependent learning and memory were evaluated by using the Morris water maze, novel object recognition, and contextual fear conditioning tests. RESULTS We showed that calmodulin (CaM) acetylation is reduced in plasma of AD patients and mice. CaM acetylation and its target Ca2+ /CaM-dependent kinase II α (CaMKIIα) activity were severely impaired in AD mouse brain. The stoichiometry showed that Ac-K22, K95-CaM acetylation were decreased in AD patients and mice. Moreover, we screened and identified that lysine deacetylase 9 (HDAC9) was the main deacetylase for CaM. In addition, HDAC9 inhibition increased CaM acetylation and CaMKIIα activity, and hippocampus-dependent memory in AD mice. CONCLUSIONS HDAC9-mediated CaM deacetylation induces memory impairment in AD, HDAC9, or CaM acetylation may become potential therapeutic targets for AD.
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Affiliation(s)
- Hai‐Long Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Shufen Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Pin Yang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life ScienceEast China Normal UniversityShanghaiChina
| | - Han‐Chun Long
- Department of NeurologyThe Affiliated Xingyi City Hospital of Guizhou Medical UniversityXingyiChina
| | - Quan‐Hong Ma
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Dong‐Min Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life ScienceEast China Normal UniversityShanghaiChina
| | - Guang‐Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
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5
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Lauby SC, Lapp HE, Salazar M, Semyrenko S, Chauhan D, Margolis AE, Champagne FA. Postnatal maternal care moderates the effects of prenatal bisphenol exposure on offspring neurodevelopmental, behavioral, and transcriptomic outcomes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.19.558481. [PMID: 37786706 PMCID: PMC10541647 DOI: 10.1101/2023.09.19.558481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Bisphenols (BPs), including BPA and "BPA-free" structural analogs, are commonly used plasticizers that are present in many plastics and are known endocrine disrupting chemicals. Prenatal exposure to BPA has been associated with negative neurodevelopmental and behavioral outcomes in children and rodent models. Prenatal BPA exposure has also been shown to impair postnatal maternal care provisioning, which can also affect offspring neurodevelopment and behavior. However, there is limited knowledge regarding the biological effects of prenatal exposure to bisphenols other than BPA and the interplay between prenatal BP exposure and postnatal maternal care on adult behavior. The purpose of the current study was to determine the interactive impact of prenatal BP exposure and postnatal maternal care on neurodevelopment and behavior. Our findings suggest that the effects of prenatal BP exposure on eye-opening, adult attentional set shifting and anxiety-like behavior in the open field are dependent on maternal care in the first five days of life. Interestingly, maternal care might also attenuate the effects of prenatal BP exposure on eye opening and adult attentional set shifting. Finally, transcriptomic profiles in male and female medial prefrontal cortex and amygdala suggest that the interactive effects of prenatal BP exposure and postnatal maternal care converge on estrogen receptor signaling and are involved in biological processes related to gene expression and protein translation and synthesis. Overall, these findings indicate that postnatal maternal care plays a critical role in the expression of the effects of prenatal BP exposure on neurodevelopment and adult behavior. Understanding the underlying biological mechanisms involved might allow us to identify potential avenues to mitigate the adverse effects of prenatal BP exposure and improve health and well-being in human populations.
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Affiliation(s)
- Samantha C Lauby
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
- Center for Molecular Carcinogenesis and Toxicology, University of Texas at Austin
| | - Hannah E Lapp
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
| | - Melissa Salazar
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
| | - Sofiia Semyrenko
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
| | - Danyal Chauhan
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
| | - Amy E Margolis
- Department of Psychiatry, Columbia University Irving Medical Center
| | - Frances A Champagne
- Department of Psychology, College of Liberal Arts, University of Texas at Austin
- Center for Molecular Carcinogenesis and Toxicology, University of Texas at Austin
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6
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Bouzid A, Almidani A, Zubrikhina M, Kamzanova A, Ilce BY, Zholdassova M, Yusuf AM, Bhamidimarri PM, AlHaj HA, Kustubayeva A, Bernstein A, Burnaev E, Sharaev M, Hamoudi R. Integrative bioinformatics and artificial intelligence analyses of transcriptomics data identified genes associated with major depressive disorders including NRG1. Neurobiol Stress 2023; 26:100555. [PMID: 37583471 PMCID: PMC10423927 DOI: 10.1016/j.ynstr.2023.100555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 06/26/2023] [Accepted: 07/04/2023] [Indexed: 08/17/2023] Open
Abstract
Major depressive disorder (MDD) is a common mental disorder and is amongst the most prevalent psychiatric disorders. MDD remains challenging to diagnose and predict its onset due to its heterogeneous phenotype and complex etiology. Hence, early detection using diagnostic biomarkers is critical for rapid intervention. In this study, a mixture of AI and bioinformatics were used to mine transcriptomic data from publicly available datasets including 170 MDD patients and 121 healthy controls. Bioinformatics analysis using gene set enrichment analysis (GSEA) and machine learning (ML) algorithms were applied. The GSEA revealed that differentially expressed genes in MDD patients are mainly enriched in pathways related to immune response, inflammatory response, neurodegeneration pathways and cerebellar atrophy pathways. Feature selection methods and ML provided predicted models based on MDD-altered genes with ≥75% of accuracy. The integrative analysis between the bioinformatics and ML approaches identified ten key MDD-related biomarkers including NRG1, CEACAM8, CLEC12B, DEFA4, HP, LCN2, OLFM4, SERPING1, TCN1 and THBS1. Among them, NRG1, active in synaptic plasticity and neurotransmission, was the most robust and reliable to distinguish between MDD patients and healthy controls amongst independent external datasets consisting of a mixture of populations. Further evaluation using saliva samples from an independent cohort of MDD and healthy individuals confirmed the upregulation of NRG1 in patients with MDD compared to healthy controls. Functional mapping to the human brain regions showed NRG1 to have high expression in the main subcortical limbic brain regions implicated in depression. In conclusion, integrative bioinformatics and ML approaches identified putative non-invasive diagnostic MDD-related biomarkers panel for the onset of depression.
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Affiliation(s)
- Amal Bouzid
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Abdulrahman Almidani
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Maria Zubrikhina
- Applied AI Center, Skolkovo Institute of Science and Technology, Moscow, Russian Federation
| | - Altyngul Kamzanova
- The Center for Cognitive Neuroscience, Al Farabi Kazakh National University, Kazakhstan
| | - Burcu Yener Ilce
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Manzura Zholdassova
- The Center for Cognitive Neuroscience, Al Farabi Kazakh National University, Kazakhstan
| | - Ayesha M. Yusuf
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Poorna Manasa Bhamidimarri
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Hamid A. AlHaj
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- Faculty of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Almira Kustubayeva
- The Center for Cognitive Neuroscience, Al Farabi Kazakh National University, Kazakhstan
| | - Alexander Bernstein
- Applied AI Center, Skolkovo Institute of Science and Technology, Moscow, Russian Federation
| | - Evgeny Burnaev
- Applied AI Center, Skolkovo Institute of Science and Technology, Moscow, Russian Federation
| | - Maxim Sharaev
- Applied AI Center, Skolkovo Institute of Science and Technology, Moscow, Russian Federation
| | - Rifat Hamoudi
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- Faculty of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Division of Surgery and Interventional Science, University College London, London, United Kingdom
- ASPIRE Precision Medicine Research Institute Abu Dhabi, University of Sharjah, Sharjah, United Arab Emirates
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7
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Vincent B, Maitra S. BACE1-dependent metabolism of neuregulin 1: Bridging the gap in explaining the occurrence of schizophrenia-like symptoms in Alzheimer's disease with psychosis? Ageing Res Rev 2023; 89:101988. [PMID: 37331479 DOI: 10.1016/j.arr.2023.101988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/20/2023]
Abstract
Alzheimer's disease is a neurodegenerative disease mainly characterized by cortico-neuronal atrophy, impaired memory and other cognitive declines. On the other hand, schizophrenia is a neuro-developmental disorder with an overtly active central nervous system pruning system resulting into abrupt connections with common symptoms including disorganised thoughts, hallucination and delusion. Nevertheless, the fronto-temporal anomaly presents itself as a common denominator for the two pathologies. There is even a strong presumption of increased risk of developing co-morbid dementia for schizophrenic individuals and psychosis for Alzheimer's disease patients, overall leading to a further deteriorated quality of life. However, convincing proofs of how these two disorders, although very distant from each other when considering their aetiology, develop coexisting symptoms is yet to be resolved. At the molecular level, the two primarily neuronal proteins β-amyloid precursor protein and neuregulin 1 have been considered in this relevant context, although the conclusions are for the moment only hypotheses. In order to propose a model for explaining the psychotic schizophrenia-like symptoms that sometimes accompany AD-associated dementia, this review projects out on the similar sensitivity shared by these two proteins regarding their metabolism by the β-site APP cleaving enzyme 1.
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Affiliation(s)
- Bruno Vincent
- Institute of Molecular and Cellular Pharmacology, Laboratory of Excellence DistALZ, Université Côte d'Azur, INSERM, CNRS, Sophia-Antipolis, 06560 Valbonne, France.
| | - Subhamita Maitra
- Department of Molecular Biology, Umeå University, Umeå 90736, Sweden
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8
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Ren D, Luo B, Chen P, Yu L, Xiong M, Fu Z, Zhou T, Chen WB, Fei E. DiGeorge syndrome critical region gene 2 (DGCR2), a schizophrenia risk gene, regulates dendritic spine development through cell adhesion. Cell Biosci 2023; 13:134. [PMID: 37480133 PMCID: PMC10362570 DOI: 10.1186/s13578-023-01081-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 07/06/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Dendritic spines are the sites of excitatory synapses on pyramidal neurons, and their development is crucial for neural circuits and brain functions. The spine shape, size, or number alterations are associated with neurological disorders, including schizophrenia. DiGeorge syndrome critical region gene 2 (DGCR2) is one of the deleted genes within the 22q11.2 deletion syndrome (22q11DS), which is a high risk for developing schizophrenia. DGCR2 expression was reduced in schizophrenics. However, the pathophysiological mechanism of DGCR2 in schizophrenia or 22q11DS is still unclear. RESULTS Here, we report that DGCR2 expression was increased during the neurodevelopmental period and enriched in the postsynaptic densities (PSDs). DGCR2-deficient hippocampal neurons formed fewer spines. In agreement, glutamatergic transmission and synaptic plasticity were decreased in the hippocampus of DGCR2-deficient mice. Further molecular studies showed that the extracellular domain (ECD) of DGCR2 is responsible for its transcellular interaction with cell adhesion molecule Neurexin1 (NRXN1) and spine development. Consequently, abnormal behaviors, like anxiety, were observed in DGCR2-deficient mice. CONCLUSIONS These observations indicate that DGCR2 is a novel cell adhesion molecule required for spine development and synaptic plasticity, and its deficiency induces abnormal behaviors in mice. This study provides a potential pathophysiological mechanism of DGCR2 in 22q11DS and related mental disorders.
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Affiliation(s)
- Dongyan Ren
- School of Life Sciences, Nanchang University, Nanchang, 330031, China
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Bin Luo
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Peng Chen
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Lulu Yu
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Mingtao Xiong
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Zhiqiang Fu
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Tian Zhou
- School of Basic Medical Sciences, Nanchang University, Nanchang, 330031, China
| | - Wen-Bing Chen
- Institute of Life Science, Nanchang University, Nanchang, 330031, China.
| | - Erkang Fei
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.
- Institute of Life Science, Nanchang University, Nanchang, 330031, China.
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9
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Batista-Brito R, Majumdar A, Nuño A, Ward C, Barnes C, Nikouei K, Vinck M, Cardin JA. Developmental loss of ErbB4 in PV interneurons disrupts state-dependent cortical circuit dynamics. Mol Psychiatry 2023; 28:3133-3143. [PMID: 37069344 PMCID: PMC10618960 DOI: 10.1038/s41380-023-02066-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/19/2023]
Abstract
GABAergic inhibition plays an important role in the establishment and maintenance of cortical circuits during development. Neuregulin 1 (Nrg1) and its interneuron-specific receptor ErbB4 are key elements of a signaling pathway critical for the maturation and proper synaptic connectivity of interneurons. Using conditional deletions of the ERBB4 gene in mice, we tested the role of this signaling pathway at two developmental timepoints in parvalbumin-expressing (PV) interneurons, the largest subpopulation of cortical GABAergic cells. Loss of ErbB4 in PV interneurons during embryonic, but not late postnatal development leads to alterations in the activity of excitatory and inhibitory cortical neurons, along with severe disruption of cortical temporal organization. These impairments emerge by the end of the second postnatal week, prior to the complete maturation of the PV interneurons themselves. Early loss of ErbB4 in PV interneurons also results in profound dysregulation of excitatory pyramidal neuron dendritic architecture and a redistribution of spine density at the apical dendritic tuft. In association with these deficits, excitatory cortical neurons exhibit normal tuning for sensory inputs, but a loss of state-dependent modulation of the gain of sensory responses. Together these data support a key role for early developmental Nrg1/ErbB4 signaling in PV interneurons as a powerful mechanism underlying the maturation of both the inhibitory and excitatory components of cortical circuits.
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Affiliation(s)
- Renata Batista-Brito
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Department of Psychiatry and Behavioral Sciences, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Genetics, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
| | - Antara Majumdar
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Sherrington Road, Oxford, OX1 3PT, England
| | - Alejandro Nuño
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Claire Ward
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA
| | - Clayton Barnes
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Kasra Nikouei
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Martin Vinck
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528, Frankfurt, Germany
| | - Jessica A Cardin
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven, CT, 06520, USA.
- Wu Tsai Institute, Yale University, 100 College St., New Haven, CT, 06520, USA.
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10
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Ding CY, Ding YT, Ji H, Wang YY, Zhang X, Yin DM. Genetic labeling reveals spatial and cellular expression pattern of neuregulin 1 in mouse brain. Cell Biosci 2023; 13:79. [PMID: 37147705 PMCID: PMC10161477 DOI: 10.1186/s13578-023-01032-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/15/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND Where the gene is expressed determines the function of the gene. Neuregulin 1 (Nrg1) encodes a tropic factor and is genetically linked with several neuropsychiatry diseases such as schizophrenia, bipolar disorder and depression. Nrg1 has broad functions ranging from regulating neurodevelopment to neurotransmission in the nervous system. However, the expression pattern of Nrg1 at the cellular and circuit levels in rodent brain is not full addressed. METHODS Here we used CRISPR/Cas9 techniques to generate a knockin mouse line (Nrg1Cre/+) that expresses a P2A-Cre cassette right before the stop codon of Nrg1 gene. Since Cre recombinase and Nrg1 are expressed in the same types of cells in Nrg1Cre/+ mice, the Nrg1 expression pattern can be revealed through the Cre-reporting mice or adeno-associated virus (AAV) that express fluorescent proteins in a Cre-dependent way. Using unbiased stereology and fluorescence imaging, the cellular expression pattern of Nrg1 and axon projections of Nrg1-positive neurons were investigated. RESULTS In the olfactory bulb (OB), Nrg1 is expressed in GABAergic interneurons including periglomerular (PG) and granule cells. In the cerebral cortex, Nrg1 is mainly expressed in the pyramidal neurons of superficial layers that mediate intercortical communications. In the striatum, Nrg1 is highly expressed in the Drd1-positive medium spiny neurons (MSNs) in the shell of nucleus accumbens (NAc) that project to substantia nigra pars reticulata (SNr). In the hippocampus, Nrg1 is mainly expressed in granule neurons in the dentate gyrus and pyramidal neurons in the subiculum. The Nrg1-expressing neurons in the subiculum project to retrosplenial granular cortex (RSG) and mammillary nucleus (MM). Nrg1 is highly expressed in the median eminence (ME) of hypothalamus and Purkinje cells in the cerebellum. CONCLUSIONS Nrg1 is broadly expressed in mouse brain, mainly in neurons, but has unique expression patterns in different brain regions.
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Affiliation(s)
- Chen-Yun Ding
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
- Center of Implant Dentistry, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China
| | - Yan-Ting Ding
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Haifeng Ji
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
- Shanghai Changning Mental Health Center, Affiliated to East China Normal University, Shanghai, 200335, China
| | - Yao-Yi Wang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Xinwen Zhang
- Center of Implant Dentistry, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China.
- Laboratory Animal Centre, China Medical University, Shenyang, 110001, China.
| | - Dong-Min Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China.
- NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai, Shanghai, 200062, China.
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11
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Villalonga E, Mosrin C, Normand T, Girardin C, Serrano A, Žunar B, Doudeau M, Godin F, Bénédetti H, Vallée B. LIM Kinases, LIMK1 and LIMK2, Are Crucial Node Actors of the Cell Fate: Molecular to Pathological Features. Cells 2023; 12:cells12050805. [PMID: 36899941 PMCID: PMC10000741 DOI: 10.3390/cells12050805] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
LIM kinase 1 (LIMK1) and LIM kinase 2 (LIMK2) are serine/threonine and tyrosine kinases and the only two members of the LIM kinase family. They play a crucial role in the regulation of cytoskeleton dynamics by controlling actin filaments and microtubule turnover, especially through the phosphorylation of cofilin, an actin depolymerising factor. Thus, they are involved in many biological processes, such as cell cycle, cell migration, and neuronal differentiation. Consequently, they are also part of numerous pathological mechanisms, especially in cancer, where their involvement has been reported for a few years and has led to the development of a wide range of inhibitors. LIMK1 and LIMK2 are known to be part of the Rho family GTPase signal transduction pathways, but many more partners have been discovered over the decades, and both LIMKs are suspected to be part of an extended and various range of regulation pathways. In this review, we propose to consider the different molecular mechanisms involving LIM kinases and their associated signalling pathways, and to offer a better understanding of their variety of actions within the physiology and physiopathology of the cell.
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Affiliation(s)
- Elodie Villalonga
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Christine Mosrin
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Thierry Normand
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Caroline Girardin
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Amandine Serrano
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Bojan Žunar
- Laboratory for Biochemistry, Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia
| | - Michel Doudeau
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Fabienne Godin
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Hélène Bénédetti
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
| | - Béatrice Vallée
- Centre de Biophysique Moléculaire; UPR4301, CNRS, University of Orleans and INSERM, CEDEX 2, 45071 Orleans, France
- Correspondence: ; Tel.: +33-(0)2-38-25-76-11
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12
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The laterodorsal tegmentum-ventral tegmental area circuit controls depression-like behaviors by activating ErbB4 in DA neurons. Mol Psychiatry 2023; 28:1027-1045. [PMID: 33990773 PMCID: PMC8590712 DOI: 10.1038/s41380-021-01137-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 04/08/2021] [Accepted: 04/19/2021] [Indexed: 01/07/2023]
Abstract
Dopamine (DA) neurons in the ventral tegmental area (VTA) are critical to coping with stress. However, molecular mechanisms regulating their activity and stress-induced depression were not well understood. We found that the receptor tyrosine kinase ErbB4 in VTA was activated in stress-susceptible mice. Deleting ErbB4 in VTA or in DA neurons, or chemical genetic inhibition of ErbB4 kinase activity in VTA suppressed the development of chronic social defeat stress (CSDS)-induced depression-like behaviors. ErbB4 activation required the expression of NRG1 in the laterodorsal tegmentum (LDTg); LDTg-specific deletion of NRG1 inhibited depression-like behaviors. NRG1 and ErbB4 suppressed potassium currents of VTA DA neurons and increased their firing activity. Finally, we showed that acute inhibition of ErbB4 after stress attenuated DA neuron hyperactivity and expression of depression-like behaviors. Together, these observations demonstrate a critical role of NRG1-ErbB4 signaling in regulating depression-like behaviors and identify an unexpected mechanism by which the LDTg-VTA circuit regulates the activity of DA neurons.
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13
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Dong J, Chen W, Liu N, Chang S, Zhu W, Kang J. NRG1 knockdown rescues PV interneuron GABAergic maturation deficits and schizophrenia behaviors in fetal growth restriction mice. Cell Death Dis 2022; 8:476. [PMID: 36460658 PMCID: PMC9718849 DOI: 10.1038/s41420-022-01271-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 12/04/2022]
Abstract
Schizophrenia is a highly debilitating mental disorder, those who experienced fetal growth restriction (FGR) in the early stage of life have a greater probability of schizophrenia. In this study, FGR mice showed hyperactivity in locomotor activity test, sociability dysfunction in three chamber test and nesting social behavior tests, cognition decline in Morris water maze and impaired sensory motor gating function in prepulse inhibition test. Mechanistic studies indicated that the number of parvalbumin (PV) interneuron was significantly reduced in FGR mouse media prefrontal cortex (mPFC). And the mRNA and protein level of neuregulin 1(NRG1), which is a critical schizophrenia gene, increased significantly in FGR mouse mPFC. Furthermore, NRG1 knockdown in FGR mouse mPFC improved PV interneuron GABAergic maturation and rescued schizophrenia behaviors including hyperactivity, social novelty defects, cognition decline, and sensorimotor gating deficits in FGR mice. This study indicates that mPFC NRG1 upregulation is one of the main causes of FGR-induced schizophrenia, which leads to significant reduction of PV interneuron number in mPFC. NRG1 knockdown in mPFC significantly rescues schizophrenia behaviors in FGR mouse. This study thus provides a potential effective therapy target or strategy for schizophrenia patients induced by FGR.
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Affiliation(s)
- Jianfeng Dong
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
| | - Wen Chen
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
| | - Nana Liu
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
| | - Shujuan Chang
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
| | - Wei Zhu
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
| | - Jiuhong Kang
- grid.24516.340000000123704535Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Institute for Advanced Study, Tongji University, Shanghai, China
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14
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Elevated peripheral Neuregulin-1 protein levels in non-medicated focal epilepsy patients. J Clin Neurosci 2022; 102:1-4. [DOI: 10.1016/j.jocn.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 11/21/2022]
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15
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Investigating the Role of GABA in Neural Development and Disease Using Mice Lacking GAD67 or VGAT Genes. Int J Mol Sci 2022; 23:ijms23147965. [PMID: 35887307 PMCID: PMC9318753 DOI: 10.3390/ijms23147965] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/12/2022] [Accepted: 07/16/2022] [Indexed: 11/18/2022] Open
Abstract
Normal development and function of the central nervous system involves a balance between excitatory and inhibitory neurotransmission. Activity of both excitatory and inhibitory neurons is modulated by inhibitory signalling of the GABAergic and glycinergic systems. Mechanisms that regulate formation, maturation, refinement, and maintenance of inhibitory synapses are established in early life. Deviations from ideal excitatory and inhibitory balance, such as down-regulated inhibition, are linked with many neurological diseases, including epilepsy, schizophrenia, anxiety, and autism spectrum disorders. In the mammalian forebrain, GABA is the primary inhibitory neurotransmitter, binding to GABA receptors, opening chloride channels and hyperpolarizing the cell. We review the involvement of down-regulated inhibitory signalling in neurological disorders, possible mechanisms for disease progression, and targets for therapeutic intervention. We conclude that transgenic models of disrupted inhibitory signalling—in GAD67+/− and VGAT−/− mice—are useful for investigating the effects of down-regulated inhibitory signalling in a range of neurological diseases.
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16
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Chen Y, Zheng Y, Yan J, Zhu C, Zeng X, Zheng S, Li W, Yao L, Xia Y, Su WW, Chen Y. Early Life Stress Induces Different Behaviors in Adolescence and Adulthood May Related With Abnormal Medial Prefrontal Cortex Excitation/Inhibition Balance. Front Neurosci 2022; 15:720286. [PMID: 35058738 PMCID: PMC8765554 DOI: 10.3389/fnins.2021.720286] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 12/02/2021] [Indexed: 12/28/2022] Open
Abstract
Early life stress is thought to be a risk factor for emotional disorders, particularly depression and anxiety. Although the excitation/inhibition (E/I) imbalance has been implicated in neuropsychiatric disorders, whether early life stress affects the E/I balance in the medial prefrontal cortex at various developmental stages is unclear. In this study, rats exposed to maternal separation (MS) that exhibited a well-established early life stress paradigm were used to evaluate the E/I balance in adolescence (postnatal day P43-60) and adulthood (P82-100) by behavior tests, whole-cell recordings, and microdialysis coupled with high performance liquid chromatography-mass spectrometry (HPLC-MS) analysis. First, the behavioral tests revealed that MS induced both anxiety- and depressive-like behaviors in adolescent rats but only depressive-like behavior in adult rats. Second, MS increased the action potential frequency and E/I balance of synaptic transmission onto L5 pyramidal neurons in the prelimbic (PrL) brain region of adolescent rats while decreasing the action potential frequency and E/I balance in adult rats. Finally, MS increases extracellular glutamate levels and decreased the paired-pulse ratio of evoked excitatory postsynaptic currents (EPSCs) of pyramidal neurons in the PrL of adolescent rats. In contrast, MS decreased extracellular glutamate levels and increased the paired-pulse ratio of evoked EPSCs of pyramidal neurons in the PrL of adult rats. The present results reveal a key role of E/I balance in different MS-induced disorders may related to the altered probability of presynaptic glutamate release at different developmental stages.
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Affiliation(s)
- Yiwen Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuanjia Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinglan Yan
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chuanan Zhu
- Department of Integrated Traditional Chinese and Western Medicine, Xiamen Xianyue Hospital, Xiamen, China
| | - Xuan Zeng
- Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shaoyi Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenwen Li
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lin Yao
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yucen Xia
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wei-Wei Su
- Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.,Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China.,Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, China.,Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, China
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17
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Zhang CY, Xiao X, Zhang Z, Hu Z, Li M. An alternative splicing hypothesis for neuropathology of schizophrenia: evidence from studies on historical candidate genes and multi-omics data. Mol Psychiatry 2022; 27:95-112. [PMID: 33686213 DOI: 10.1038/s41380-021-01037-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 01/08/2021] [Accepted: 01/22/2021] [Indexed: 01/31/2023]
Abstract
Alternative splicing of schizophrenia risk genes, such as DRD2, GRM3, and DISC1, has been extensively described. Nevertheless, the alternative splicing characteristics of the growing number of schizophrenia risk genes identified through genetic analyses remain relatively opaque. Recently, transcriptomic analyses in human brains based on short-read RNA-sequencing have discovered many "local splicing" events (e.g., exon skipping junctions) associated with genetic risk of schizophrenia, and further molecular characterizations have identified novel spliced isoforms, such as AS3MTd2d3 and ZNF804AE3E4. In addition, long-read sequencing analyses of schizophrenia risk genes (e.g., CACNA1C and NRXN1) have revealed multiple previously unannotated brain-abundant isoforms with therapeutic potentials, and functional analyses of KCNH2-3.1 and Ube3a1 have provided examples for investigating such spliced isoforms in vitro and in vivo. These findings suggest that alternative splicing may be an essential molecular mechanism underlying genetic risk of schizophrenia, however, the incomplete annotations of human brain transcriptomes might have limited our understanding of schizophrenia pathogenesis, and further efforts to elucidate these transcriptional characteristics are urgently needed to gain insights into the illness-correlated brain physiology and pathology as well as to translate genetic discoveries into novel therapeutic targets.
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Affiliation(s)
- Chu-Yi Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Xiao Xiao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Zhuohua Zhang
- Institute of Molecular Precision Medicine and Hunan Key Laboratory of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Zhonghua Hu
- Institute of Molecular Precision Medicine and Hunan Key Laboratory of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China. .,Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China. .,Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China. .,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China. .,Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, Hunan, China. .,Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, Hunan, China. .,National Clinical Research Center on Mental Disorders, Changsha, Hunan, China.
| | - Ming Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China. .,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, China. .,KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
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18
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Cao Q, Wei Y, Deng J, Li J, Huang Y, Li Y, Zhang JC, Zhang Z, Lin S. NRG1 accelerates the forgetting of fear memories and facilitates the induction of long-term depression in adult mice. Psychopharmacology (Berl) 2021; 238:2535-2542. [PMID: 34189597 DOI: 10.1007/s00213-021-05877-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/17/2021] [Indexed: 11/26/2022]
Abstract
RATIONALE Forgetting of fear memory is a current medical therapy for posttraumatic stress disorder (PTSD), and hippocampal long-term depression (LTD) may be the underlying mechanism. Neuregulin 1 (NRG1), a trophic factor, reportedly modulates memory consolidation and synaptic plasticity. METHODS Fear memory was assessed using contextual fear conditioning. Electrophysiology was used to measure LTD and GABAergic transmission in the hippocampus. OBJECTIVES To determine the contribution of hippocampal NRG1 to fear memory forgetting and low-frequency stimulation (LFS)-induced LTD. RESULTS Administration of NRG1 in the hippocampus accelerated forgetting of contextual fear memories. Furthermore, NRG1 had no effect on low-frequency stimulation-induced LTD in young mice but significantly facilitated the induction of LTD and GABAergic transmission in adult animals. More importantly, NRG1-facilitated LTD induction in adult mice could be blocked by inhibition of GABAA receptors and NMDAR activation. CONCLUSION These findings suggest a role for NRG1 in fear memory forgetting and hippocampal LTD, providing a potential target for the development of drug-assisted PTSD therapy.
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Affiliation(s)
- Qianqian Cao
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Yuan Wei
- Center for Scientific Research and Institute of Exercise and Health, Guangzhou Sports University, Guangzhou, 510500, China
| | - Jialin Deng
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Junfeng Li
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Yanhua Huang
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Yuke Li
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Ji-Chun Zhang
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Zili Zhang
- Department of Reproductive Medicine Center, The First People's Hospital of Foshan (Affiliated FoShan Hospital of Sun Yat-Sen University), Foshan, China.
| | - Song Lin
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China.
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19
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LIM-Kinases in Synaptic Plasticity, Memory, and Brain Diseases. Cells 2021; 10:cells10082079. [PMID: 34440848 PMCID: PMC8391678 DOI: 10.3390/cells10082079] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/30/2021] [Accepted: 08/04/2021] [Indexed: 12/12/2022] Open
Abstract
Learning and memory require structural and functional modifications of synaptic connections, and synaptic deficits are believed to underlie many brain disorders. The LIM-domain-containing protein kinases (LIMK1 and LIMK2) are key regulators of the actin cytoskeleton by affecting the actin-binding protein, cofilin. In addition, LIMK1 is implicated in the regulation of gene expression by interacting with the cAMP-response element-binding protein. Accumulating evidence indicates that LIMKs are critically involved in brain function and dysfunction. In this paper, we will review studies on the roles and underlying mechanisms of LIMKs in the regulation of long-term potentiation (LTP) and depression (LTD), the most extensively studied forms of long-lasting synaptic plasticity widely regarded as cellular mechanisms underlying learning and memory. We will also discuss the involvement of LIMKs in the regulation of the dendritic spine, the structural basis of synaptic plasticity, and memory formation. Finally, we will discuss recent progress on investigations of LIMKs in neurological and mental disorders, including Alzheimer’s, Parkinson’s, Williams–Beuren syndrome, schizophrenia, and autism spectrum disorders.
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20
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An S, Wang J, Zhang X, Duan Y, Xu Y, Lv J, Wang D, Zhang H, Richter-Levin G, Klavir O, Yu B, Cao X. αCaMKII in the lateral amygdala mediates PTSD-Like behaviors and NMDAR-Dependent LTD. Neurobiol Stress 2021; 15:100359. [PMID: 34258335 PMCID: PMC8252123 DOI: 10.1016/j.ynstr.2021.100359] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/30/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a psychiatric disorder that afflicts many individuals. However, its molecular and cellular mechanisms remain largely unexplored. Here, we found PTSD susceptible mice exhibited significant up-regulation of alpha-Ca2+/calmodulin-dependent kinase II (αCaMKII) in the lateral amygdala (LA). Consistently, increasing αCaMKII in the LA not only caused PTSD-like behaviors such as impaired fear extinction and anxiety-like behaviors, but also attenuated N-methyl-D-aspartate receptor (NMDAR)-dependent long-term depression (LTD) at thalamo-lateral amygdala (T-LA) synapses, and reduced GluA1-Ser845/Ser831 dephosphorylation and a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) internalization. Suppressing the elevated αCaMKII to normal levels completely rescued both PTSD-like behaviors and the impairments in LTD, GluA1-Ser845/Ser831 dephosphorylation, and AMPAR internalization. Intriguingly, deficits in GluA1-Ser845/Ser831 dephosphorylation and AMPAR internalization were detected not only after impaired fear extinction, but also after attenuated LTD. Our results suggest that αCaMKII in the LA may be a potential molecular determinant of PTSD. We further demonstrate for the first time that GluA1-Ser845/Ser831 dephosphorylation and AMPAR internalization are molecular links between fear extinction and LTD.
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Affiliation(s)
- Shuming An
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Jiayue Wang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Xuliang Zhang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Yanhong Duan
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Yiqiong Xu
- Department of Anesthesiology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Junyan Lv
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Dasheng Wang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Huan Zhang
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
| | - Gal Richter-Levin
- “Sagol” Department of Neurobiology, University of Haifa, Haifa, 31905, Israel
| | - Oded Klavir
- Department of Psychology, Brain and Psychopathology Division, University of Haifa, Haifa, 31905, Israel
| | - Buwei Yu
- Department of Anesthesiology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
- Corresponding author.
| | - Xiaohua Cao
- Key Laboratory of Brain Functional Genomics, Ministry of Education, School of Life Sciences, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
- Corresponding author.
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21
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Navarro-Gonzalez C, Carceller H, Benito Vicente M, Serra I, Navarrete M, Domínguez-Canterla Y, Rodríguez-Prieto Á, González-Manteiga A, Fazzari P. Nrg1 haploinsufficiency alters inhibitory cortical circuits. Neurobiol Dis 2021; 157:105442. [PMID: 34246770 DOI: 10.1016/j.nbd.2021.105442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 05/19/2021] [Accepted: 06/30/2021] [Indexed: 11/19/2022] Open
Abstract
Neuregulin 1 (NRG1) and its receptor ERBB4 are schizophrenia (SZ) risk genes that control the development of both excitatory and inhibitory cortical circuits. Most studies focused on the characterization ErbB4 deficient mice. However, ErbB4 deletion concurrently perturbs the signaling of Nrg1 and Neuregulin 3 (Nrg3), another ligand expressed in the cortex. In addition, NRG1 polymorphisms linked to SZ locate mainly in non-coding regions and they may partially reduce Nrg1 expression. Here, to study the relevance of Nrg1 partial loss-of-function in cortical circuits we characterized a recently developed haploinsufficient mouse model of Nrg1 (Nrg1tm1Lex). These mice display SZ-like behavioral deficits. The cellular and molecular underpinnings of the behavioral deficits in Nrg1tm1Lex mice remain to be established. With multiple approaches including Magnetic Resonance Spectroscopy (MRS), electrophysiology, quantitative imaging and molecular analysis we found that Nrg1 haploinsufficiency impairs the inhibitory cortical circuits. We observed changes in the expression of molecules involved in GABAergic neurotransmission, decreased density of Vglut1 excitatory buttons onto Parvalbumin interneurons and decreased frequency of spontaneous inhibitory postsynaptic currents. Moreover, we found a decreased number of Parvalbumin positive interneurons in the cortex and altered expression of Calretinin. Interestingly, we failed to detect other alterations in excitatory neurons that were previously reported in ErbB4 null mice suggesting that the Nrg1 haploinsufficiency does not entirely phenocopies ErbB4 deletions. Altogether, this study suggests that Nrg1 haploinsufficiency primarily affects the cortical inhibitory circuits in the cortex and provides new insights into the structural and molecular synaptic impairment caused by NRG1 hypofunction in a preclinical model of SZ.
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Affiliation(s)
- Carmen Navarro-Gonzalez
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain.
| | - Héctor Carceller
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain.
| | - Marina Benito Vicente
- Laboratorio Resonancia Magnética de Investigación, Hospital Nacional de Parapléjicos, Toledo, Spain.
| | - Irene Serra
- Consejo Superior de Investigaciones Científicas (CSIC), Instituto Cajal, Madrid, Spain.
| | - Marta Navarrete
- Consejo Superior de Investigaciones Científicas (CSIC), Instituto Cajal, Madrid, Spain.
| | - Yaiza Domínguez-Canterla
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain.
| | - Ángela Rodríguez-Prieto
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain.
| | - Ana González-Manteiga
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain.
| | - Pietro Fazzari
- Lab of Cortical Circuits in Health and Disease, CIPF Centro de Investigación Príncipe Felipe, Valencia, Spain; Consejo Superior de Investigaciones Científicas (CSIC), Centro de Biología Molecular Severo Ochoa, Madrid, Spain.
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22
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Zhang HL, Zhao B, Yang P, Du YQ, Han W, Xu J, Yin DM. Steroid Receptor Coactivator 3 Regulates Synaptic Plasticity and Hippocampus-dependent Memory. Neurosci Bull 2021; 37:1645-1657. [PMID: 34228315 PMCID: PMC8643392 DOI: 10.1007/s12264-021-00741-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/27/2021] [Indexed: 11/28/2022] Open
Abstract
Steroid hormones play important roles in brain development and function. The signaling of steroid hormones depends on the interaction between steroid receptors and their coactivators. Although the function of steroid receptor coactivators has been extensively studied in other tissues, their functions in the central nervous system are less well investigated. In this study, we addressed the function of steroid receptor coactivator 3 (SRC3) - a member of the p160 SRC protein family that is expressed predominantly in the hippocampus. While hippocampal development was not altered in Src3+/- mice, hippocampus-dependent functions such as short-term memory and spatial memory were impaired. We further demonstrated that the deficient learning and memory in Src3+/- mice was strongly associated with the impairment of long-term potentiation (LTP) at Schaffer Collateral-CA1 synapses. Mechanistic studies indicated that Src3+/- mutation altered the composition of N-methyl-D-aspartate receptor subunits in the postsynaptic densities of hippocampal neurons. Finally, we showed that SRC3 regulated synaptic plasticity and learning mainly dependent on its lysine acetyltransferase activity. Taken together, these results reveal previously unknown functions of SRC3 in the hippocampus and thus may provide insight into how steroid hormones regulate brain function.
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Affiliation(s)
- Hai-Long Zhang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Bing Zhao
- MOE Frontiers Center for Brain Science, Institute for Translational Brain Research, Fudan University, Shanghai, 200032, China
| | - Pin Yang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Yin-Quan Du
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Wei Han
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Jianming Xu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Dong-Min Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China.
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23
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Luo B, Liu Z, Lin D, Chen W, Ren D, Yu Z, Xiong M, Zhao C, Fei E, Li B. ErbB4 promotes inhibitory synapse formation by cell adhesion, independent of its kinase activity. Transl Psychiatry 2021; 11:361. [PMID: 34226493 PMCID: PMC8257755 DOI: 10.1038/s41398-021-01485-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 06/04/2021] [Accepted: 06/10/2021] [Indexed: 12/12/2022] Open
Abstract
The precise control of the nervous system function under the vitality of synapses is extremely critical. Efforts have been taken to explore the underlying cellular and molecular mechanisms for synapse formation. Cell adhesion molecules have been found important for synapse assembly in the brain. Many trans-adhesion complexes have been identified to modulate excitatory synapse formation. However, little is known about the synaptogenic mechanisms for inhibitory synapses. ErbB4 is a receptor tyrosine kinase enriched in interneurons. Here, we showed that overexpressing ErbB4 in HEK293T cells induced gephyrin or GABAAR α1 puncta in co-cultured primary hippocampal neurons. This induction of ErbB4 was independent of its kinase activity. K751M, a kinase-dead mutant of ErbB4, can also induce gephyrin or GABAAR α1 puncta in the co-culture system. We further constructed K751M knock-in mice and found that the homozygous were viable at birth and fertile without changes in gross brain structure. The number of interneurons and inhibitory synapses onto pyramidal neurons (PyNs) were comparable between K751M and wild-type mice but decreased in ErbB4-Null mice. Moreover, ErbB4 can interact in trans with Slitrk3, a transmembrane postsynaptic protein at inhibitory synapses, through the extracellular RLD domain of ErbB4. The deletion of RLD diminished the induction of gephyrin or GABAAR α1 puncta by ErbB4. Finally, disruption of ErbB4-Slitrk3 interaction through neutralization of Slitrk3 by secretable RLD decreased inhibitory synapses onto PyNs and impaired GABAergic transmission. These results identify that ErbB4, as a cell adhesion molecule, promotes inhibitory synapse formation onto PyNs by interacting with Slitrk3 and in a kinase-independent manner, providing an unexpected mechanism of ErbB4 in inhibitory synapse formation.
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Affiliation(s)
- Bin Luo
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Ziyang Liu
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Dong Lin
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Wenbing Chen
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Dongyan Ren
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Zheng Yu
- grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Mingtao Xiong
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Changqin Zhao
- grid.260463.50000 0001 2182 8825School of Life Sciences, Nanchang University, Nanchang, China ,grid.260463.50000 0001 2182 8825Institute of Life Science, Nanchang University, Nanchang, China
| | - Erkang Fei
- School of Life Sciences, Nanchang University, Nanchang, China. .,Institute of Life Science, Nanchang University, Nanchang, China.
| | - Baoming Li
- School of Life Sciences, Nanchang University, Nanchang, China. .,Institute of Life Science, Nanchang University, Nanchang, China. .,Department of Psychology and Institute of Brain Science, School of Education, Hangzhou Normal University, Hangzhou, China.
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24
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Jing H, Chen P, Hui T, Yu Z, Zhou J, Fei E, Wang S, Ren D, Lai X, Li B. Synapse-specific Lrp4 mRNA enrichment requires Lrp4/MuSK signaling, muscle activity and Wnt non-canonical pathway. Cell Biosci 2021; 11:105. [PMID: 34090516 PMCID: PMC8180081 DOI: 10.1186/s13578-021-00619-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 05/25/2021] [Indexed: 11/10/2022] Open
Abstract
Background The neuromuscular junction (NMJ) is a peripheral synapse critical to muscle contraction. Like acetylcholine receptors (AChRs), many essential proteins of NMJ are extremely concentrated at the postjunctional membrane. However, the mechanisms of synapse-specific concentration are not well understood; furthermore, it is unclear whether signaling molecules critical to NMJ formation and maintenance are also locally transcribed. Results We studied the β-gal activity encoded by a lacZ cassette driven by the promoter of the Lrp4 gene. As reported for Lrp4 mRNA, β-gal was in the central region in embryonic muscles and at the NMJ after its formation. However, β-gal was no longer in the central areas of muscle fibers in Lrp4 or MuSK mutant mice, indicating a requirement of Lrp4/MuSK signaling. This phenotype could be rescued by transgenic expression of LRP4 with a transmembrane domain but not soluble ECD in Lrp4 mutant mice. β-gal and AChR clusters were distributed in a broader region in lacZ/ECD than that of heterozygous lacZ/+ mice, indicating an important role of the transmembrane domain in Lrp4 signaling. Synaptic β-gal activity became diffused after denervation or treatment with µ-conotoxin, despite its mRNA was increased, indicating synaptic Lrp4 mRNA enrichment requires muscle activity. β-gal was also diffused in aged mice but became re-concentrated after muscle stimulation. Finally, Lrp4 mRNA was increased in C2C12 myotubes by Wnt ligands in a manner that could be inhibited by RKI-1447, an inhibitor of ROCK in Wnt non-canonical signaling. Injecting RKI-1447 into muscles of adult mice diminished Lrp4 synaptic expression. Conclusions This study demonstrates that synapse-specific enrichment of Lrp4 mRNA requires a coordinated interaction between Lrp4/MuSK signaling, muscle activity, and Wnt non-canonical signaling. Thus, the study provides a new mechanism for Lrp4 mRNA enrichment. It also provides a potential target for the treatment of NMJ aging and other NMJ-related diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00619-z.
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Affiliation(s)
- Hongyang Jing
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Peng Chen
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Tiankun Hui
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Zheng Yu
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Jin Zhou
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Human Aging Research Institute, Nanchang University, Nanchang, 330031, China
| | - Erkang Fei
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Shunqi Wang
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Dongyan Ren
- School of Life Science, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Xinsheng Lai
- School of Life Science, Nanchang University, Nanchang, 330031, China. .,Institute of Life Science, Nanchang University, Nanchang, 330031, China.
| | - Baoming Li
- School of Life Science, Nanchang University, Nanchang, 330031, China. .,Institute of Life Science, Nanchang University, Nanchang, 330031, China. .,Department of Psychology and Institute of Brain Science, School of Education, Hangzhou Normal University, Hangzhou, 311121, China.
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25
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Wang J, Huang J, Yao S, Wu JH, Li HB, Gao F, Wang Y, Huang GB, You QL, Li J, Chen X, Sun XD. The ketogenic diet increases Neuregulin 1 expression via elevating histone acetylation and its anti-seizure effect requires ErbB4 kinase activity. Cell Biosci 2021; 11:93. [PMID: 34020711 PMCID: PMC8139023 DOI: 10.1186/s13578-021-00611-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 05/11/2021] [Indexed: 12/16/2022] Open
Abstract
Background The ketogenic diet (KD)has been considered an effective treatment for epilepsy, whereas its underlying mechanisms remain obscure. We have previously reported that the KD feeding increased Neuregulin 1 (NRG1) expression in the hippocampus; disruption of NRG1 signaling by genetically deleting its receptor-ErbB4 abolished KDs effects on inhibitory synaptic activity and seizures. However, it is still unclear about the mechanisms underlying the effect of KD on NRG1 expression and whether the effects of KD require ErbB4 kinase activity. Methods The effects of the KD on NRG1 expression were assessed via western blotting and real-time PCR. Acetylation level at the Nrg1 promoter locus was examined using the chromatin immunoprecipitation technique. Kainic acid (KA)-induced acute seizure model was utilized to examine the effects of KD and histone deacetylase inhibitor-TSA on seizures. Synaptic activities in the hippocampus were recorded with the technique of electrophysiology. The obligatory role of ErbB4 kinase activity in KDs effects on seizures and inhibitory synaptic activity was evaluated by using ErbB kinase antagonist and transgenic mouse-T796G. Results We report that KD specifically increases Type I NRG1 expression in the hippocampus. Using the chromatin immunoprecipitation technique, we observe increased acetylated-histone occupancy at the Nrg1 promoter locus of KD-fed mice. Treatment of TSA dramatically elevates NRG1 expression and diminishes the difference between the effects of the control diet (CD) and KD. These data indicate that KD increases NRG1 expression via up-regulating histone acetylation. Moreover, both pharmacological and genetic inhibitions of ErbB4 kinase activity significantly block the KDs effects on inhibitory synaptic activity and seizure, suggesting an essential role of ErbB4 kinase activity. Conclusion These results strengthen our understanding of the role of NRG1/ErbB4 signaling in KD and shed light on novel therapeutic interventions for epilepsy. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00611-7.
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Affiliation(s)
- Jin Wang
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Jie Huang
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Shan Yao
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Jia-Hui Wu
- Department of Physiology, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Hui-Bin Li
- Department of Pathology, Guangdong Women and Children Hospital, Guangzhou, 511400, China
| | - Feng Gao
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Ying Wang
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Guo-Bin Huang
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Qiang-Long You
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Jianhua Li
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China
| | - Xiaohui Chen
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China.
| | - Xiang-Dong Sun
- Emergency Department, Institute of Neuroscience, Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China.
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26
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Chen P, Jing H, Xiong M, Zhang Q, Lin D, Ren D, Wang S, Yin D, Chen Y, Zhou T, Li B, Fei E, Pan BX. Spine impairment in mice high-expressing neuregulin 1 due to LIMK1 activation. Cell Death Dis 2021; 12:403. [PMID: 33854034 PMCID: PMC8047019 DOI: 10.1038/s41419-021-03687-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 02/08/2023]
Abstract
The genes encoding for neuregulin1 (NRG1), a growth factor, and its receptor ErbB4 are both risk factors of major depression disorder and schizophrenia (SZ). They have been implicated in neural development and synaptic plasticity. However, exactly how NRG1 variations lead to SZ remains unclear. Indeed, NRG1 levels are increased in postmortem brain tissues of patients with brain disorders. Here, we studied the effects of high-level NRG1 on dendritic spine development and function. We showed that spine density in the prefrontal cortex and hippocampus was reduced in mice (ctoNrg1) that overexpressed NRG1 in neurons. The frequency of miniature excitatory postsynaptic currents (mEPSCs) was reduced in both brain regions of ctoNrg1 mice. High expression of NRG1 activated LIMK1 and increased cofilin phosphorylation in postsynaptic densities. Spine reduction was attenuated by inhibiting LIMK1 or blocking the NRG1–LIMK1 interaction, or by restoring NRG1 protein level. These results indicate that a normal NRG1 protein level is necessary for spine homeostasis and suggest a pathophysiological mechanism of abnormal spines in relevant brain disorders.
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Affiliation(s)
- Peng Chen
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Hongyang Jing
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Mingtao Xiong
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Qian Zhang
- School of Basic Medical Sciences, Nanchang University, Nanchang, 330031, China
| | - Dong Lin
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Dongyan Ren
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Shunqi Wang
- School of Life Sciences, Nanchang University, Nanchang, 330031, China.,Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Dongmin Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062, China
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Tian Zhou
- School of Basic Medical Sciences, Nanchang University, Nanchang, 330031, China
| | - Baoming Li
- Institute of Life Science, Nanchang University, Nanchang, 330031, China
| | - Erkang Fei
- School of Life Sciences, Nanchang University, Nanchang, 330031, China. .,Institute of Life Science, Nanchang University, Nanchang, 330031, China.
| | - Bing-Xing Pan
- School of Life Sciences, Nanchang University, Nanchang, 330031, China. .,Institute of Life Science, Nanchang University, Nanchang, 330031, China.
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27
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Gory-Fauré S, Powell R, Jonckheere J, Lanté F, Denarier E, Peris L, Nguyen CH, Buisson A, Lafanechère L, Andrieux A. Pyr1-Mediated Pharmacological Inhibition of LIM Kinase Restores Synaptic Plasticity and Normal Behavior in a Mouse Model of Schizophrenia. Front Pharmacol 2021; 12:627995. [PMID: 33790791 PMCID: PMC8006432 DOI: 10.3389/fphar.2021.627995] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/04/2021] [Indexed: 12/14/2022] Open
Abstract
The search for effective treatments for neuropsychiatric disorders is ongoing, with progress being made as brain structure and neuronal function become clearer. The central roles played by microtubules (MT) and actin in synaptic transmission and plasticity suggest that the cytoskeleton and its modulators could be relevant targets for the development of new molecules to treat psychiatric diseases. In this context, LIM Kinase - which regulates both the actin and MT cytoskeleton especially in dendritic spines, the post-synaptic compartment of the synapse - might be a good target. In this study, we analyzed the consequences of blocking LIMK1 pharmacologically using Pyr1. We investigated synaptic plasticity defects and behavioral disorders in MAP6 KO mice, an animal model useful for the study of psychiatric disorders, particularly schizophrenia. Our results show that Pyr1 can modulate MT dynamics in neurons. In MAP6 KO mice, chronic LIMK inhibition by long-term treatment with Pyr1 can restore normal dendritic spine density and also improves long-term potentiation, both of which are altered in these mice. Pyr1 treatment improved synaptic plasticity, and also reduced social withdrawal and depressive/anxiety-like behavior in MAP6 KO mice. Overall, the results of this study validate the hypothesis that modulation of LIMK activity could represent a new therapeutic strategy for neuropsychiatric diseases.
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Affiliation(s)
- Sylvie Gory-Fauré
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Rebecca Powell
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Julie Jonckheere
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Fabien Lanté
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Eric Denarier
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France.,Health Department, Interdisciplinary Research Institute of Grenoble, CEA, Grenoble, France
| | - Leticia Peris
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Chi Hung Nguyen
- Chimie et Modélisation pour la Biologie du Cancer, Institut Curie, PSL Research University, CNRS UMR9187, Inserm U1196, Orsay, France
| | - Alain Buisson
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France
| | - Laurence Lafanechère
- Université Grenoble Alpes, Grenoble, France.,Microenvironment, Cell Plasticity and Signaling Department, Institute for Advanced Biosciences, CNRS UMR5309, Inserm U1209, Grenoble, France
| | - Annie Andrieux
- Department of Molecular and Cellular Neurosciences, Grenoble Institute Neuroscience, Inserm U1216, Grenoble, France.,Université Grenoble Alpes, Grenoble, France.,Health Department, Interdisciplinary Research Institute of Grenoble, CEA, Grenoble, France
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Effects of handling on the behavioural phenotype of the neuregulin 1 type III transgenic mouse model for schizophrenia. Behav Brain Res 2021; 405:113166. [PMID: 33588020 DOI: 10.1016/j.bbr.2021.113166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 01/14/2021] [Accepted: 02/02/2021] [Indexed: 02/07/2023]
Abstract
Handling of laboratory mice affects animal wellbeing and behavioural test outcomes. However, present research has focused on handling effects in common strains of laboratory mice despite the knowledge that environmental factors can modify established phenotypes of genetic mouse models. Thus, we examined the impact of handling on the face validity of a transgenic mouse model for the schizophrenia risk gene neuregulin 1 (i.e. Nrg1 type III overexpression). Nrg1 III tg and wild type-like (WT) control mice of both sexes underwent tail or tunnel handling before being assessed in the open field (OF), elevated plus maze (EPM), social preference/novelty, prepulse inhibition, and fear conditioning tests. Tunnel-handling reduced the startle response in all mice, increased OF locomotion and exploration in males and reduced anxiety in males (OF) and females (EPM) compared to tail-handling. Importantly, tunnel handling induced a more pronounced startle response to increasing startle stimuli in Nrg1 III tg females compared to respective controls, a phenomenon absent in tail-handled females. Finally, Nrg1 III tg males displayed reduced OF exploration and centre locomotion and Nrg1 III tg females displayed increased cue freezing over time compared to controls. In conclusion, handling methods have a significant impact on a variety of behavioural domains thus the impact of routine handling procedures need be considered when testing behavioural phenotypes. Handling did not change the main schizophrenia-relevant characteristics of Nrg1 III tg mice but affected the acoustic startle-response in a genotype- and sex-specific manner. Future research should evaluate the effect of handling on other genetic models.
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Overexpression of neuregulin 1 in GABAergic interneurons results in reversible cortical disinhibition. Nat Commun 2021; 12:278. [PMID: 33436636 PMCID: PMC7804852 DOI: 10.1038/s41467-020-20552-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022] Open
Abstract
Cortical disinhibition is a common feature of several neuropsychiatric diseases such as schizophrenia, autism and intellectual disabilities. However, the underlying mechanisms are not fully understood. To mimic increased expression of Nrg1, a schizophrenia susceptibility gene in GABAergic interneurons from patients with schizophrenia, we generated gtoNrg1 mice with overexpression of Nrg1 in GABAergic interneurons. gtoNrg1 mice showed cortical disinhibition at the cellular, synaptic, neural network and behavioral levels. We revealed that the intracellular domain of NRG1 interacts with the cytoplasmic loop 1 of Nav1.1, a sodium channel critical for the excitability of GABAergic interneurons, and inhibits Nav currents. Intriguingly, activation of GABAergic interneurons or restoring NRG1 expression in adulthood could rescue the hyperactivity and impaired social novelty in gtoNrg1 mice. These results identify mechanisms underlying cortical disinhibition related to schizophrenia and raise the possibility that restoration of NRG1 signaling and GABAergic function is beneficial in certain neuropsychiatric disorders. The molecular and cellular mechanisms of cortical disinhibition as a common feature of many psychiatric diseases are not fully understood. The authors identify an interaction between NRG1 and Nav1.1 sodium channel as a mechanism of how NRG1 modulates the excitability of GABAergic interneurons.
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Abstract
The neural mechanisms underlying the impacts of noise on nonauditory function, particularly learning and memory, remain largely unknown. Here, we demonstrate that rats exposed postnatally (between postnatal days 9 and 56) to structured noise delivered at a sound pressure level of ∼65 dB displayed significantly degraded hippocampus-related learning and memory abilities. Noise exposure also suppressed the induction of hippocampal long-term potentiation (LTP). In parallel, the total or phosphorylated levels of certain LTP-related key signaling molecules in the synapses of the hippocampus were down-regulated. However, no significant changes in stress-related processes were found for the noise-exposed rats. These results in a rodent model indicate that even moderate-level noise with little effect on stress status can substantially impair hippocampus-related learning and memory by altering the plasticity of synaptic transmission. They support the importance of more thoroughly defining the unappreciated hazards of moderately loud noise in modern human environments.
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Yu J, Liao X, Zhong Y, Wu Y, Lai X, Jiao H, Yan M, Zhang Y, Ma C, Wang S. The Candidate Schizophrenia Risk Gene Tmem108 Regulates Glucose Metabolism Homeostasis. Front Endocrinol (Lausanne) 2021; 12:770145. [PMID: 34690937 PMCID: PMC8531597 DOI: 10.3389/fendo.2021.770145] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/23/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Schizophrenia (SCZ) is a severe psychiatric disease affected by genetic factors and environmental contributors, and premorbid abnormality of glucose metabolism is one of the SCZ characteristics supposed to contribute to the disease's pathological process. Transmembrane protein 108 (Tmem108) is a susceptible gene associated with multiple psychiatric diseases, including SCZ. Moreover, Tmem108 mutant mice exhibit SCZ-like behaviors in the measurement of sensorimotor gating. However, it is unknown whether Tmem108 regulates glucose metabolism homeostasis while it involves SCZ pathophysiological process. RESULTS In this research, we found that Tmem108 mutant mice exhibited glucose intolerance, insulin resistance, and disturbed metabolic homeostasis. Food and oxygen consumption decreased, and urine production increased, accompanied by weak fatigue resistance in the mutant mice. Simultaneously, the glucose metabolic pathway was enhanced, and lipid metabolism decreased in the mutant mice, consistent with the elevated respiratory exchange ratio (RER). Furthermore, metformin attenuated plasma glucose levels and improved sensorimotor gating in Tmem108 mutant mice. CONCLUSIONS Hyperglycemia occurs more often in SCZ patients than in control, implying that these two diseases share common biological mechanisms, here we demonstrate that the Tmem108 mutant may represent such a comorbid mechanism.
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Affiliation(s)
- Jianbo Yu
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
| | - Xufeng Liao
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
| | - Yanzi Zhong
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
- Department of Biology, Senior Middle School of Yongfeng, Ji’an, China
| | - Yongqiang Wu
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
| | - Xinsheng Lai
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
- School of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Huifeng Jiao
- School of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Min Yan
- School of Basic Medical Sciences, Nanchang University, Nanchang, China
| | - Yu Zhang
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
| | - Chaolin Ma
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
- School of Basic Medical Sciences, Nanchang University, Nanchang, China
- *Correspondence: Chaolin Ma, ; Shunqi Wang,
| | - Shunqi Wang
- Laboratory of Synaptic Development and Plasticity, Institute of Life Science & School of Life Sciences, Nanchang University, Nanchang, China
- School of Basic Medical Sciences, Nanchang University, Nanchang, China
- *Correspondence: Chaolin Ma, ; Shunqi Wang,
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Metformin Enhances Excitatory Synaptic Transmission onto Hippocampal CA1 Pyramidal Neurons. Brain Sci 2020; 10:brainsci10100706. [PMID: 33020379 PMCID: PMC7601223 DOI: 10.3390/brainsci10100706] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/25/2020] [Accepted: 10/01/2020] [Indexed: 02/07/2023] Open
Abstract
Metformin (Met) is a first-line drug for type 2 diabetes mellitus (T2DM). Numerous studies have shown that Met exerts beneficial effects on a variety of neurological disorders, including Alzheimer's disease (AD), Parkinson's disease (PD) and Huntington's disease (HD). However, it is still largely unclear how Met acts on neurons. Here, by treating acute hippocampal slices with Met (1 μM and 10 μM) and recording synaptic transmission as well as neuronal excitability of CA1 pyramidal neurons, we found that Met treatments significantly increased the frequency of miniature excitatory postsynaptic currents (mEPSCs), but not amplitude. Neither frequency nor amplitude of miniature inhibitory postsynaptic currents (mIPSCs) were changed with Met treatments. Analysis of paired-pulse ratios (PPR) demonstrates that enhanced presynaptic glutamate release from terminals innervating CA1 hippocampal pyramidal neurons, while excitability of CA1 pyramidal neurons was not altered. Our results suggest that Met preferentially increases glutamatergic rather than GABAergic transmission in hippocampal CA1, providing a new insight on how Met acts on neurons.
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Xia Y, Zhang Z, Lin W, Yan J, Zhu C, Yin D, He S, Su Y, Xu N, Caldwell RW, Yao L, Chen Y. Modulating microglia activation prevents maternal immune activation induced schizophrenia-relevant behavior phenotypes via arginase 1 in the dentate gyrus. Neuropsychopharmacology 2020; 45:1896-1908. [PMID: 32599605 PMCID: PMC7608378 DOI: 10.1038/s41386-020-0743-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/10/2020] [Accepted: 06/16/2020] [Indexed: 12/31/2022]
Abstract
Prenatal infection during pregnancy increases the risk for developing neuropsychiatric disorders such as schizophrenia. This is linked to an inflammatory microglial phenotype in the offspring induced by maternal immune activation (MIA). Microglia are crucial for brain development and maintenance of neuronal niches, however, whether and how their activation is involved in the regulation of neurodevelopment remains unclear. Here, we used a MIA rodent model in which polyinosinic: polycytidylic acid (poly (I:C)) was injected into pregnant mice. We found fewer parvalbumin positive (PV+) cells and impaired GABAergic transmission in the dentate gyrus (DG), accompanied by schizophrenia-like behavior in the adult offspring. Minocycline, a potent inhibitor of microglia activation, successfully prevented the above-mentioned deficits in the offspring. Furthermore, by using microglia-specific arginase 1 (Arg1) ablation as well as overexpression in DG, we identified a critical role of Arg1 in microglia activation to protect against poly (I:C) imparted neuropathology and altered behavior in offspring. Taken together, our results highlight that Arg1-mediated alternative activation of microglia are potential therapeutic targets for psychiatric disorders induced by MIA.
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Affiliation(s)
- Yucen Xia
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Zhiqing Zhang
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Weipeng Lin
- grid.22069.3f0000 0004 0369 6365Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062 China
| | - Jinglan Yan
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Chuan’an Zhu
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Dongmin Yin
- grid.22069.3f0000 0004 0369 6365Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life Science, East China Normal University, Shanghai, 200062 China
| | - Su He
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Yang Su
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Nenggui Xu
- grid.411866.c0000 0000 8848 7685South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006 China
| | - Robert William Caldwell
- grid.410427.40000 0001 2284 9329Department of Pharmacology and Toxicology, Augusta University, Augusta, GA 30912 USA
| | - Lin Yao
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China. .,School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China. .,Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou, 510515, China. .,Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, 510515, China.
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Shi L, Bergson CM. Neuregulin 1: an intriguing therapeutic target for neurodevelopmental disorders. Transl Psychiatry 2020; 10:190. [PMID: 32546684 PMCID: PMC7297728 DOI: 10.1038/s41398-020-00868-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/14/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Neurodevelopmental psychiatric disorders including schizophrenia (Sz) and attention deficit hyperactivity disorder (ADHD) are chronic mental illnesses, which place costly and painful burdens on patients, their families and society. In recent years, the epidermal growth factor (EGF) family member Neuregulin 1 (NRG1) and one of its receptors, ErbB4, have received considerable attention due to their regulation of inhibitory local neural circuit mechanisms important for information processing, attention, and cognitive flexibility. Here we examine an emerging body of work indicating that either decreasing NRG1-ErbB4 signaling in fast-spiking parvalbumin positive (PV+) interneurons or increasing it in vasoactive intestinal peptide positive (VIP+) interneurons could reactivate cortical plasticity, potentially making it a future target for gene therapy in adults with neurodevelopmental disorders. We propose preclinical studies to explore this model in prefrontal cortex (PFC), but also review the many challenges in pursuing cell type and brain-region-specific therapeutic approaches for the NRG1 system.
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Affiliation(s)
- Liang Shi
- grid.410427.40000 0001 2284 9329Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, 1460 Laney Walker Boulevard, Augusta, GA 30912 USA ,grid.189967.80000 0001 0941 6502Present Address: Department of Cell Biology, Emory University School of Medicine, Atlanta, GA USA
| | - Clare M. Bergson
- grid.410427.40000 0001 2284 9329Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, 1460 Laney Walker Boulevard, Augusta, GA 30912 USA
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Hasan A, Roeh A, Leucht S, Langguth B, Hansbauer M, Oviedo-Salcedo T, Kirchner SK, Papazova I, Löhrs L, Wagner E, Maurus I, Strube W, Rossner MJ, Wehr MC, Bauer I, Heres S, Leucht C, Kreuzer PM, Zimmermann S, Schneider-Axmann T, Görlitz T, Karch S, Egert-Schwender S, Schossow B, Rothe P, Falkai P. Add-on spironolactone as antagonist of the NRG1-ERBB4 signaling pathway for the treatment of schizophrenia: Study design and methodology of a multicenter randomized, placebo-controlled trial. Contemp Clin Trials Commun 2020; 17:100537. [PMID: 32072071 PMCID: PMC7013159 DOI: 10.1016/j.conctc.2020.100537] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 01/18/2020] [Accepted: 01/26/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Preclinical studies recently showed that the mineralocorticoid antagonist spironolactone acts also as an antagonist of the NRG1-ERBB4 signaling pathway and improves schizophrenia-like behaviour in Nrg1 transgenic mouse model. As this signaling pathway is critically linked to the pathophysiology of schizophrenia, especially in the context of working-memory dysfunction, spironolactone may be a novel treatment option for patients with schizophrenia targeting cognitive impairments. AIMS To evaluate whether spironolactone added to an ongoing antipsychotic treatment improves cognitive functioning in schizophrenia. METHODS The add-on spironolactone for the treatment of schizophrenia trial (SPIRO-TREAT) is a multicenter randomized, placebo-controlled trial with three arms (spironolactone 100 mg, spironolactone 200 mg and placebo). Schizophrenia patients are treated for three weeks and then followed-up for additional nine weeks. As primary outcome, we investigate changes in working memory before and at the end of the intervention phase. We will randomize 90 patients. Eighty-one patients are intended to reach the primary endpoint measure at the end of the three-week intervention period. Secondary endpoints include other measures of cognition, psychopathology, safety measures and biological measures. CONCLUSIONS SPIRO-TREAT is the first study evaluating the efficacy of the mineralocorticoid receptor antagonist spironolactone to improve cognitive impairments in schizophrenia patients targeting the NRG1-ERBB4 signaling pathway. With SPIRO-TREAT, we intend to investigate a novel treatment option for cognitive impairments in schizophrenia that goes beyond the established concepts of interfering with dopaminergic neurotransmission as key pathway in schizophrenia treatment. CLINICAL TRIAL REGISTRATION International Clinical Trials Registry Platform: http://apps.who.int/trialsearch/Trial2.aspx?TrialID=EUCTR2014-001968-35-DE.
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Affiliation(s)
- Alkomiet Hasan
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
- Department of Psychiatry, Psychotherapy and Psychosomatics of the University Augsburg, Bezirkskrankenhaus Augsburg, University of Augsburg, Augsburg, Germany
| | - Astrid Roeh
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, Munich, Faculty of Medicine, Klinikum Rechts der Isar, Germany
| | - Berthold Langguth
- Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
| | - Maximilian Hansbauer
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Tatiana Oviedo-Salcedo
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Sophie K. Kirchner
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Irina Papazova
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Lisa Löhrs
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Elias Wagner
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Isabel Maurus
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Wolfgang Strube
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Moritz J. Rossner
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Michael C. Wehr
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Ingrid Bauer
- Department of Psychiatry and Psychotherapy, Technical University of Munich, Munich, Faculty of Medicine, Klinikum Rechts der Isar, Germany
| | - Stephan Heres
- Department of Psychiatry and Psychotherapy, Technical University of Munich, Munich, Faculty of Medicine, Klinikum Rechts der Isar, Germany
| | - Claudia Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, Munich, Faculty of Medicine, Klinikum Rechts der Isar, Germany
| | - Peter M. Kreuzer
- Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
| | | | - Thomas Schneider-Axmann
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Thomas Görlitz
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Susanne Karch
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
| | - Silvia Egert-Schwender
- Münchner Studienzentrum, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Beate Schossow
- Münchner Studienzentrum, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Philipp Rothe
- Department of Forensic Psychiatry and Psychotherapy, Ulm University, Ulm, Germany
| | - Peter Falkai
- Department of Psychiatry and Psychotherapy, University Hospital, Ludwig-Maximilians University München, Germany
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Jalilzad M, Jafari A, Babaei P. Neuregulin1β improves both spatial and associative learning and memory in Alzheimer model of rats possibly through signaling pathways other than Erk1/2. Neuropeptides 2019; 78:101963. [PMID: 31522857 DOI: 10.1016/j.npep.2019.101963] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Neuregulin-1β (NRG1 β) is associated with various neurological disorders such as schizophrenia, depression and Parkinson's disease. However, its role in Alzheimer's (AD) has not been understood yet. Here, we have studied the effect of NRG1 β and extracellular-signal-regulated kinase (ERK) signaling on special and associative memories and emotional stress in AD model of rats. METHODS Fifty six male Wistar rats were divided into eight groups of: Saline + Saline, Aβ + Saline, Aβ + NRG1β (5 μg/5 ul), Aβ + PBS, Aβ + NRG1β + PD98059 (PD, 5 μg/2 μl), Aβ + NRG1β + Saline and Saline + PD. AD model was induced by intracerebroventricular (ICV) injection of beta-amyloid protein (Aβ1-42, 4 μg/2 μl). The cognitive performances of rats were evaluated using Morris Water Maze (MWM) and Step through passive avoidance. Also locomotors activity and emotionality of animals were considered in an Open field test. Data were analyzed by one way Anova one way, repeated measure and T-test. RESULTS Significant improvement was found in spatial learning and memory assessed by total time spent in target quadrant [F (4, 32) = 12.4, p = 0.001], escape latency [F (4, 32) = 15.767, p = 0.001] and distance moved [F (4, 32) = 5.55, p = 0.002], in Aβ + NRG1β compared with Aβ + Saline in MWM. Also Aβ + NRG1β showed long latencies to enter into the dark compartment [F (4, 32) = 6.43, p = 0.001], but short time spent [F (4, 32) =6.93, p = 0.001] compared with control. Administration of an ERK inhibitor (PD98059, 5 μg, 15 min before NRG1β) didn't completely block learning memory restored by NRG1β in AD model (p = 0.7). No significant between groups differences was found in emotional stress characteristics in open field, except the grooming numbers which were higher in Saline + PD compared with Saline + Saline (p = 0.02). CONCLUSION Our findings indicate that NRG1β restores cognitive dysfunctions induced by amyloid β through signaling pathways possibly other than Erk1/2, with no significant change in anxiety, locomotion and vegetative activities.
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Affiliation(s)
- Marzieh Jalilzad
- Cellular & Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Department of Physiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Adele Jafari
- Department of Physiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Neuroscience Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Parvin Babaei
- Cellular & Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Department of Physiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Neuroscience Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
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Trans-cinnamaldehyde improves neuroinflammation-mediated NMDA receptor dysfunction and memory deficits through blocking NF-κB pathway in presenilin1/2 conditional double knockout mice. Brain Behav Immun 2019; 82:45-62. [PMID: 31376499 DOI: 10.1016/j.bbi.2019.07.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 07/11/2019] [Accepted: 07/30/2019] [Indexed: 12/24/2022] Open
Abstract
A chronic neuroinflammatory response has been considered as a critical pathogenesis promoting neurodegenerative progression in Alzheimer's disease (AD). During neuroinflammatory process, microglia are excessively activated and simultaneously release numerous pro-inflammatory mediators that cause synaptic dysfunction in the forebrain prior to neuronal degeneration and memory deficits in AD. Thus, prevention of neuroinflammation-mediated synaptic dysfunction may be a potential therapeutic approach against neurodegenerative disorders. Trans-cinnamaldehyde (TCA) is a primary bioactive component derived from the stem bark of Cinnamomum cassia, and it possesses potent anti-inflammatory and neuroprotective activities in in vivo and in vitro experiments. However, the in-depth molecular mechanisms of TCA underlying anti-neuroinflammatory and neuroprotective effects on memory deficits in AD are still unclear. The presenilin 1 and 2 conditional double knockout (PS cDKO) mice exhibit AD-like phenotypes including obvious neuroinflammatory responses and synaptic dysfunction and memory deficits. Here, PS cDKO were used to evaluate the potential neuroprotective effects of TCA against neuroinflammation-mediated dementia by performing behavioral tests, electrophysiological recordings and molecular biology analyses. We observed that TCA treatment reversed abnormal expression of synaptic proteins and tau hyperphosphorylation in the hippocampus and prefrontal cortex of PS cDKO mice. TCA treatment also ameliorated NMDA receptor (NMDAR) dysfunction including impaired NMDAR-mediated responses and long-term potentiation (LTP) induction in the hippocampus of PS cDKO mice. Moreover, TCA possesses an ability to suppress neuroinflammatory responses by diminishing microglial activation and levels of pro-inflammatory mediators in the hippocampus and prefrontal cortex of PS cDKO mice. Importantly, improving NMDAR dysfunction and memory deficits of PS cDKO mice was due to the inhibition of neuroinflammatory responses through TCA's interruptive effect on the nuclear factor kappa B (NF-κB) signaling pathway. Therefore, TCA may be a potential anti-neuroinflammatory agent for deterring neurodegenerative progression of AD.
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38
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Yao L, Wang Z, Deng D, Yan R, Ju J, Zhou Q. The impact of D-cycloserine and sarcosine on in vivo frontal neural activity in a schizophrenia-like model. BMC Psychiatry 2019; 19:314. [PMID: 31653237 PMCID: PMC6814999 DOI: 10.1186/s12888-019-2306-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 09/30/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND N-methyl-D-aspartate receptor (NMDAR) hypofunction has been proposed to underlie the pathogenesis of schizophrenia. Specifically, reduced function of NMDARs leads to altered balance between excitation and inhibition which further drives neural network malfunctions. Clinical studies suggested that NMDAR modulators (glycine, D-serine, D-cycloserine and glycine transporter inhibitors) may be beneficial in treating schizophrenia patients. Preclinical evidence also suggested that these NMDAR modulators may enhance synaptic NMDAR function and synaptic plasticity in brain slices. However, an important issue that has not been addressed is whether these NMDAR modulators modulate neural activity/spiking in vivo. METHODS By using in vivo calcium imaging and single unit recording, we tested the effect of D-cycloserine, sarcosine (glycine transporter 1 inhibitor) and glycine, on schizophrenia-like model mice. RESULTS In vivo neural activity is significantly higher in the schizophrenia-like model mice, compared to control mice. D-cycloserine and sarcosine showed no significant effect on neural activity in the schizophrenia-like model mice. Glycine induced a large reduction in movement in home cage and reduced in vivo brain activity in control mice which prevented further analysis of its effect in schizophrenia-like model mice. CONCLUSIONS We conclude that there is no significant impact of the tested NMDAR modulators on neural spiking in the schizophrenia-like model mice.
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Affiliation(s)
- Lulu Yao
- 0000 0001 2256 9319grid.11135.37School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Zongliang Wang
- 0000 0001 2256 9319grid.11135.37School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Di Deng
- 0000 0001 2256 9319grid.11135.37School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Rongzhen Yan
- 0000 0001 2256 9319grid.11135.37School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Jun Ju
- 0000 0001 2256 9319grid.11135.37School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055 China
| | - Qiang Zhou
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, 518055, China. .,State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
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39
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Nrg1 Intracellular Signaling Is Neuroprotective upon Stroke. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:3930186. [PMID: 31583038 PMCID: PMC6754950 DOI: 10.1155/2019/3930186] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/13/2019] [Accepted: 07/29/2019] [Indexed: 01/08/2023]
Abstract
The schizophrenia risk gene NRG1 controls the formation of excitatory and inhibitory synapses in cortical circuits. While the expression of different NRG1 isoforms occurs during development, adult neurons primarily express the CRD-NRG1 isoform characterized by a highly conserved intracellular domain (NRG1-ICD). We and others have demonstrated that Nrg1 intracellular signaling promotes dendrite elongation and excitatory connections during neuronal development. However, the role of Nrg1 intracellular signaling in adult neurons and pathological conditions remains largely unaddressed. Here, we investigated the role of Nrg1 intracellular signaling in neuroprotection and stroke. Our bioinformatic analysis revealed the evolutionary conservation of the NRG1-ICD and a decrease in NRG1 expression with age in the human frontal cortex. Hence, we first evaluated whether Nrg1 signaling may affect pathological hallmarks in an in vitro model of neuronal senescence; however, our data failed to reveal a role for Nrg1 in the activation of the stress-related pathway p38 MAPK and DNA damage. Previous studies demonstrated that the soluble EGF domain of Nrg1 alleviated brain ischemia, a pathological process involving the generation of free radicals, reactive oxygen species (ROS), and excitotoxicity. Hence, we tested the hypothesis that Nrg1 intracellular signaling could be neuroprotective in stroke. We discovered that Nrg1 expression significantly increased neuronal survival upon oxygen-glucose deprivation (OGD), an established in vitro model for stroke. Notably, the specific activation of Nrg1 intracellular signaling by expression of the Nrg1-ICD protected neurons from OGD. Additionally, time-lapse experiments confirmed that Nrg1 intracellular signaling increased the survival of neurons exposed to OGD. Finally, we investigated the relevance of Nrg1 intracellular signaling in stroke in vivo. Using viral vectors, we expressed the Nrg1-ICD in cortical neurons and subsequently challenged them by a focal hemorrhagic stroke; our data indicated that Nrg1 intracellular signaling improved neuronal survival in the infarcted area. Altogether, these data highlight Nrg1 intracellular signaling as neuroprotective upon ischemic lesion both in vitro and in vivo. Given the complexity of the neurotoxic effects of stroke and the involvement of various mechanisms, such as the generation of ROS, excitotoxicity, and inflammation, further studies are required to determine the molecular bases of the neuroprotective effect of Nrg1 intracellular signaling. In conclusion, our research highlights the stimulation of Nrg1 intracellular signaling as a promising target for cortical stroke treatment.
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40
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Vullhorst D, Buonanno A. NMDA Receptors Regulate Neuregulin 2 Binding to ER-PM Junctions and Ectodomain Release by ADAM10 [corrected]. Mol Neurobiol 2019; 56:8345-8363. [PMID: 31240601 DOI: 10.1007/s12035-019-01659-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 05/20/2019] [Indexed: 12/13/2022]
Abstract
Unprocessed pro-neuregulin 2 (pro-NRG2) accumulates on neuronal cell bodies at junctions between the endoplasmic reticulum and plasma membrane (ER-PM junctions). NMDA receptors (NMDARs) trigger NRG2 ectodomain shedding from these sites followed by activation of ErbB4 receptor tyrosine kinases, and ErbB4 signaling cell-autonomously downregulates intrinsic excitability of GABAergic interneurons by reducing voltage-gated sodium channel currents. NMDARs also promote dispersal of Kv2.1 clusters from ER-PM junctions and cause a hyperpolarizing shift in its voltage-dependent channel activation, suggesting that NRG2/ErbB4 and Kv2.1 work together to regulate intrinsic interneuron excitability in an activity-dependent manner. Here we explored the cellular processes underlying NMDAR-dependent NRG2 shedding in cultured rat hippocampal neurons. We report that NMDARs control shedding by two separate but converging mechanisms. First, NMDA treatment disrupts binding of pro-NRG2 to ER-PM junctions by post-translationally modifying conserved Ser/Thr residues in its intracellular domain. Second, using a mutant NRG2 protein that cannot be modified at these residues and that fails to accumulate at ER-PM junctions, we demonstrate that NMDARs also directly promote NRG2 shedding by ADAM-type metalloproteinases. Using pharmacological and shRNA-mediated knockdown, and metalloproteinase overexpression, we unexpectedly find that ADAM10, but not ADAM17/TACE, is the major NRG2 sheddase acting downstream of NMDAR activation. Together, these findings reveal how NMDARs exert tight control over the NRG2/ErbB4 signaling pathway, and suggest that NRG2 and Kv2.1 are co-regulated components of a shared pathway that responds to elevated extracellular glutamate levels.
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Affiliation(s)
- Detlef Vullhorst
- Section on Molecular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 35 Lincoln Drive, Room 2C-1000, Bethesda, MD, 20892, USA
| | - Andres Buonanno
- Section on Molecular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 35 Lincoln Drive, Room 2C-1000, Bethesda, MD, 20892, USA.
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41
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Ju J, Liu L, Zhang Y, Zhou Q. Effect of age onset on schizophrenia-like phenotypes and underlying mechanisms in model mice. Prog Neuropsychopharmacol Biol Psychiatry 2019; 89:465-474. [PMID: 30025793 DOI: 10.1016/j.pnpbp.2018.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/13/2018] [Accepted: 07/15/2018] [Indexed: 10/28/2022]
Abstract
In humans, schizophrenia with onset in adolescence or adult has distinct features. To understand whether schizophrenia with either adolescence- or adult-onset have distinct phenotypes and cellular mechanisms in schizophrenia model mice, we altered Nrg1 signaling during either adolescence or adult mice via injection of anti-Nrg1 antibodies. We found that in either early-onset schizophrenia (EOS)- or late-onset schizophrenia (LOS)-like mice, certain behavior phenotypes are shared including hyperlocomotion, impaired working memory and impaired fear conditioning. Anxiety appears to be largely unaffected. In vitro electrophysiology in brain slices showed altered excitation/inhibition balance in EOS-like mice towards enhanced synaptic excitation, but intrinsic excitability of the fast-spiking GABAergic neurons was elevated in the LOS-like mice. Thus, although schizophrenia-like main phenotypes appear to be preserved in both age onset model mice, there are distinct differences in cellular mechanisms between them. We suggest that these differences are important for more precise diagnosis and more effective treatment of schizophrenia.
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Affiliation(s)
- Jun Ju
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Luping Liu
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Yujie Zhang
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China
| | - Qiang Zhou
- School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen, China.
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42
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Yan J, Pan Y, Zheng X, Zhu C, Zhang Y, Shi G, Yao L, Chen Y, Xu N. Comparative Study of ROCK1 and ROCK2 in Hippocampal Spine Formation and Synaptic Function. Neurosci Bull 2019; 35:649-660. [PMID: 30826947 DOI: 10.1007/s12264-019-00351-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 11/23/2018] [Indexed: 01/14/2023] Open
Abstract
Rho-associated kinases (ROCKs) are serine-threonine protein kinases that act downstream of small Rho GTPases to regulate the dynamics of the actin cytoskeleton. Two ROCK isoforms (ROCK1 and ROCK2) are expressed in the mammalian central nervous system. Although ROCK activity has been implicated in synapse formation, whether the distinct ROCK isoforms have different roles in synapse formation and function in vivo is not clear. Here, we used a genetic approach to address this long-standing question. Both Rock1+/- and Rock2+/- mice had impaired glutamatergic transmission, reduced spine density, and fewer excitatory synapses in hippocampal CA1 pyramidal neurons. In addition, both Rock1+/- and Rock2+/- mice showed deficits in long-term potentiation at hippocampal CA1 synapses and were impaired in spatial learning and memory based on the water maze and contextual fear conditioning tests. However, the spine morphology of CA1 pyramidal neurons was altered only in Rock2+/- but not Rock1+/- mice. In this study we compared the roles of ROCK1 and ROCK2 in synapse formation and function in vivo for the first time. Our results provide a better understanding of the functions of distinct ROCK isoforms in synapse formation and function.
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Affiliation(s)
- Jinglan Yan
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Youcan Pan
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.,Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510006, China
| | - Xiaoyan Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Chuanan Zhu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yu Zhang
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Guoqi Shi
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Lin Yao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China. .,Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, 510515, China.
| | - Nenggui Xu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Grieco SF, Holmes TC, Xu X. Neuregulin directed molecular mechanisms of visual cortical plasticity. J Comp Neurol 2019; 527:668-678. [PMID: 29464684 PMCID: PMC6103898 DOI: 10.1002/cne.24414] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/18/2018] [Accepted: 01/18/2018] [Indexed: 02/06/2023]
Abstract
Experience-dependent critical period (CP) plasticity has been extensively studied in the visual cortex. Monocular deprivation during the CP affects ocular dominance, limits visual performance, and contributes to the pathological etiology of amblyopia. Neuregulin-1 (NRG1) signaling through its tyrosine kinase receptor ErbB4 is essential for the normal development of the nervous system and has been linked to neuropsychiatric disorders such as schizophrenia. We discovered recently that NRG1/ErbB4 signaling in PV neurons is critical for the initiation of CP visual cortical plasticity by controlling excitatory synaptic inputs onto PV neurons and thus PV-cell mediated cortical inhibition that occurs following visual deprivation. Building on this discovery, we review the existing literature of neuregulin signaling in developing and adult cortex and address the implication of NRG/ErbB4 signaling in visual cortical plasticity at the cellular and circuit levels. NRG-directed research may lead to therapeutic approaches to reactivate plasticity in the adult cortex.
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Affiliation(s)
- Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California
- Department of Biomedical Engineering, University of California, Irvine, California
- Department of Microbiology and Molecular Genetics, University of California, Irvine, California
| | - Todd C Holmes
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California
- Department of Biomedical Engineering, University of California, Irvine, California
- Department of Microbiology and Molecular Genetics, University of California, Irvine, California
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California
- Department of Biomedical Engineering, University of California, Irvine, California
- Department of Microbiology and Molecular Genetics, University of California, Irvine, California
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Genetic labeling reveals temporal and spatial expression pattern of D2 dopamine receptor in rat forebrain. Brain Struct Funct 2019; 224:1035-1049. [PMID: 30604007 PMCID: PMC6499762 DOI: 10.1007/s00429-018-01824-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/20/2018] [Indexed: 01/11/2023]
Abstract
The D2 dopamine receptor (Drd2) is implicated in several brain disorders such as schizophrenia, Parkinson’s disease, and drug addiction. Drd2 is also the primary target of both antipsychotics and Parkinson’s disease medications. Although the expression pattern of Drd2 is relatively well known in mouse brain, the temporal and spatial distribution of Drd2 is lesser clear in rat brain due to the lack of Drd2 reporter rat lines. Here, we used CRISPR/Cas9 techniques to generate two knockin rat lines: Drd2::Cre and Rosa26::loxp-stop-loxp-tdTomato. By crossing these two lines, we produced Drd2 reporter rats expressing the fluorescence protein tdTomato under the control of the endogenous Drd2 promoter. Using fluorescence imaging and unbiased stereology, we revealed the cellular expression pattern of Drd2 in adult and postnatal rat forebrain. Strikingly, the Drd2 expression pattern differs between Drd2 reporter rats and Drd2 reporter mice generated by BAC transgene in prefrontal cortex and hippocampus. These results provide fundamental information needed for the study of Drd2 function in rat forebrain. The Drd2::Cre rats generated here may represent a useful tool to study the function of neuronal populations expressing Drd2.
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45
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Genetic recovery of ErbB4 in adulthood partially restores brain functions in null mice. Proc Natl Acad Sci U S A 2018; 115:13105-13110. [PMID: 30498032 DOI: 10.1073/pnas.1811287115] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neurotrophic factor NRG1 and its receptor ErbB4 play a role in GABAergic circuit assembly during development. ErbB4 null mice possess fewer interneurons, have decreased GABA release, and show impaired behavior in various paradigms. In addition, NRG1 and ErbB4 have also been implicated in regulating GABAergic transmission and plasticity in matured brains. However, current ErbB4 mutant strains are unable to determine whether phenotypes in adult mutant mice result from abnormal neural development. This important question, a glaring gap in understanding NRG1-ErbB4 function, was addressed by using two strains of mice with temporal control of ErbB4 deletion and expression, respectively. We found that ErbB4 deletion in adult mice impaired behavior and GABA release but had no effect on neuron numbers and morphology. On the other hand, some deficits due to the ErbB4 null mutation during development were alleviated by restoring ErbB4 expression at the adult stage. Together, our results indicate a critical role of NRG1-ErbB4 signaling in GABAergic transmission and behavior in adulthood and suggest that restoring NRG1-ErbB4 signaling at the postdevelopmental stage might benefit relevant brain disorders.
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46
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Olaya JC, Heusner CL, Matsumoto M, Shannon Weickert C, Karl T. Schizophrenia-relevant behaviours of female mice overexpressing neuregulin 1 type III. Behav Brain Res 2018; 353:227-235. [DOI: 10.1016/j.bbr.2018.03.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 03/15/2018] [Accepted: 03/15/2018] [Indexed: 12/20/2022]
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47
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Altered hippocampal gene expression and structure in transgenic mice overexpressing neuregulin 1 (Nrg1) type I. Transl Psychiatry 2018; 8:229. [PMID: 30348978 PMCID: PMC6197224 DOI: 10.1038/s41398-018-0288-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/24/2018] [Accepted: 09/26/2018] [Indexed: 11/26/2022] Open
Abstract
Transgenic mice overexpressing the type I isoform of neuregulin 1 (Nrg1; NRG1) have alterations in hippocampal gamma oscillations and an age-emergent deficit in hippocampus-dependent spatial working memory. Here, we examined the molecular and morphological correlates of these findings. Microarrays showed over 100 hippocampal transcripts differentially expressed in Nrg1tg-type I mice, with enrichment of genes related to neuromodulation and, in older mice, of genes involved in inflammation and immunity. Nrg1tg-type I mice had an enlarged hippocampus with a widened dentate gyrus. The results show that Nrg1 type I impacts on hippocampal gene expression and structure in a multifaceted and partly age-related way, complementing the evidence implicating Nrg1 signaling in aspects of hippocampal function. The findings are also relevant to the possible role of NRG1 signaling in the pathophysiology of schizophrenia or other disorders affecting this brain region.
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48
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Waddington JL, O'Tuathaigh CM. Modelling the neuromotor abnormalities of psychotic illness: Putative mechanisms and systems dysfunction. Schizophr Res 2018; 200:12-19. [PMID: 28867516 DOI: 10.1016/j.schres.2017.08.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/11/2017] [Accepted: 08/16/2017] [Indexed: 12/20/2022]
Abstract
Limitations in access to antipsychotic-naïve patients and in the incisiveness of studies that can be conducted on them, together with the inevitability of subsequent antipsychotic treatment, indicate an enduring role for animal models that can inform on the pathobiology of neuromotor abnormalities in schizophrenia and related psychotic illness. This review focusses particularly on genetically modified mouse models that involve genes associated with risk for schizophrenia and with mechanisms implicated in the neuromotor abnormalities evident in psychotic patients, as well as developmental models that seek to mirror the trajectory, phenomenology and putative pathophysiology of psychotic illness. Such abnormalities are inconsistent and subtle in mice mutant for some schizophrenia risk genes but more evident for others. The phenotype of dopaminergic and glutamatergic mutants indicates the involvement of these mechanisms, informs on the roles of specific receptor subtypes, and implicates the interplay of cortical and subcortical processes. Developmental models suggest a criticality in the timing of early adversity for diversity in the relative emergence of psychological symptoms vis-à-vis neuromotor abnormalities in the overall psychosis phenotype. These findings elaborate current concepts of dysfunction in a neuronal network linking the cerebral cortex, basal ganglia, thalamus and cerebellum. Both findings in model systems and clinical evidence converge in indicating that any distinction between 'psychomotor' and 'neuromotor' abnormality is artificial and arbitrary due to a unitary origin in developmentally determined systems/network dysfunction that underlies the lifetime trajectory of psychotic illness.
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Affiliation(s)
- John L Waddington
- Molecular & Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland; Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psychiatric-Diseases, Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
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49
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Müller T, Braud S, Jüttner R, Voigt BC, Paulick K, Sheean ME, Klisch C, Gueneykaya D, Rathjen FG, Geiger JR, Poulet JF, Birchmeier C. Neuregulin 3 promotes excitatory synapse formation on hippocampal interneurons. EMBO J 2018; 37:embj.201798858. [PMID: 30049711 PMCID: PMC6120667 DOI: 10.15252/embj.201798858] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 01/09/2023] Open
Abstract
Hippocampal GABAergic interneurons are crucial for cortical network function and have been implicated in psychiatric disorders. We show here that Neuregulin 3 (Nrg3), a relatively little investigated low-affinity ligand, is a functionally dominant interaction partner of ErbB4 in parvalbumin-positive (PV) interneurons. Nrg3 and ErbB4 are located pre- and postsynaptically, respectively, in excitatory synapses on PV interneurons in vivo Additionally, we show that ablation of Nrg3 results in a similar phenotype as the one described for ErbB4 ablation, including reduced excitatory synapse numbers on PV interneurons, altered short-term plasticity, and disinhibition of the hippocampal network. In culture, presynaptic Nrg3 increases excitatory synapse numbers on ErbB4+ interneurons and affects short-term plasticity. Nrg3 mutant neurons are poor donors of presynaptic terminals in the presence of competing neurons that produce recombinant Nrg3, and this bias requires postsynaptic ErbB4 but not ErbB4 kinase activity. Furthermore, when presented by non-neuronal cells, Nrg3 induces postsynaptic membrane specialization. Our data indicate that Nrg3 provides adhesive cues that facilitate excitatory neurons to synapse onto ErbB4+ interneurons.
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Affiliation(s)
- Thomas Müller
- Developmental Biology/Signal Transduction Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Stephanie Braud
- Institute of Neurophysiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - René Jüttner
- Developmental Neurobiology Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Birgit C Voigt
- Neural Circuits and Behaviour Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Katharina Paulick
- Developmental Biology/Signal Transduction Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Maria E Sheean
- Developmental Biology/Signal Transduction Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Constantin Klisch
- Institute of Neurophysiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Dilansu Gueneykaya
- Cellular Neuroscience Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Fritz G Rathjen
- Developmental Neurobiology Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
| | - Jörg Rp Geiger
- Institute of Neurophysiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - James Fa Poulet
- Neural Circuits and Behaviour Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany.,Neuroscience Research Center and Cluster of Excellence NeuroCure, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Carmen Birchmeier
- Developmental Biology/Signal Transduction Group, Max-Delbrueck-Centrum in the Helmholtz Association, Berlin, Germany
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50
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Olaya JC, Heusner CL, Matsumoto M, Sinclair D, Kondo MA, Karl T, Shannon Weickert C. Overexpression of Neuregulin 1 Type III Confers Hippocampal mRNA Alterations and Schizophrenia-Like Behaviors in Mice. Schizophr Bull 2018; 44:865-875. [PMID: 28981869 PMCID: PMC6007747 DOI: 10.1093/schbul/sbx122] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Neuregulin 1 (NRG1) is a schizophrenia candidate gene whose protein product is involved in neuronal migration, survival, and synaptic plasticity via production of specific isoforms. Importantly, NRG1 type III (NRG1 III) mRNA is increased in humans inheriting a schizophrenia risk haplotype for the NRG1 gene (HapICE), and NRG1 protein levels can be elevated in schizophrenia. The nature by which NRG1 type III overexpression results in schizophrenia-like behavior and brain pathology remains unclear, therefore we constructed a transgenic mouse with Nrg1 III overexpression in forebrain neurons (CamKII kinase+). Here, we demonstrate construct validity for this mouse model, as juvenile and adult Nrg1 III transgenic mice exhibit an overexpression of Nrg1 III mRNA and Nrg1 protein in multiple brain regions. Furthermore, Nrg1 III transgenic mice have face validity as they exhibit schizophrenia-relevant behavioral phenotypes including deficits in social preference, impaired fear-associated memory, and reduced prepulse inhibition. Additionally, microarray assay of hippocampal mRNA uncovered transcriptional alterations downstream of Nrg1 III overexpression, including changes in serotonin receptor 2C and angiotensin-converting enzyme. Transgenic mice did not exhibit other schizophrenia-relevant behaviors including hyperactivity, social withdrawal, or an increased vulnerability to the effects of MK-801 malate. Our results indicate that this novel Nrg1 III mouse is valid for modeling potential pathological mechanisms of some schizophrenia-like behaviors, for determining what other neurobiological changes may be downstream of elevated NRG1 III levels and for preclinically testing therapeutic strategies that may be specifically efficacious in patients with the NRG1 (HapICE) risk genotype.
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Affiliation(s)
- Juan C Olaya
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Randwick, NSW, Australia,School of Psychiatry, University of New South Wales, Sydney, Australia
| | | | | | - Duncan Sinclair
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Randwick, NSW, Australia,School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Mari A Kondo
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Randwick, NSW, Australia,School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Tim Karl
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Randwick, NSW, Australia,School of Medicine, Western Sydney University, Campbelltown, Australia
| | - Cynthia Shannon Weickert
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Randwick, NSW, Australia,School of Psychiatry, University of New South Wales, Sydney, Australia,To whom correspondence should be addressed; Neuroscience Research Australia, Barker Street, Randwick, NSW 2031, Australia; tel: +61-2-9399-1117, fax: +61-2-9399-1005, e-mail:
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